• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention shows a centrifugal station for removing a machining liquid from workpieces (11), with a workpiece holder (5,6) which can be set in rotation by a drive (7) in order to to free the pick-up workpiece (11) from adhering machining liquid. The centrifugal station has a compressed air cleaning arrangement (12) which removes machining liquid that adheres to an area of the workpiece (11) by blowing compressed air on it. The invention further comprises a corresponding compressed air cleaning arrangement (12) for removing a machining liquid from toothed workpieces (11), the compressed air cleaning arrangement (12) removing machining liquid adhering to an area of the workpiece (11) by blowing compressed air on it.
    公开号:CH709642B1
    申请号:CH00444/15
    申请日:2015-03-27
    公开日:2021-08-31
    发明作者:Weixler Johannes
    申请人:Liebherr Verzahntech Gmbh；
    IPC主号:
    专利说明:

    The present invention relates to a centrifugal station for removing a machining liquid remaining on a workpiece after machining. In particular, the present invention relates to the removal of a machining fluid from toothed workpieces. The invention also relates to a compressed air cleaning arrangement for a centrifugal station, a gear processing machine and a method for processing a workpiece.
    When interlocking workpieces, and especially in hard fine machining, a machining liquid is used to cool the workpiece and the tool, in particular cooling oil or a cooling lubricant. This sticks to the workpiece after it has been machined.
    However, users of gear cutting machines are placing ever increasing demands on the oil-free workpieces for further processing. It is known to use a centrifugal station to remove the machining liquid. Such a centrifugal station has a workpiece holder which can be set in rotation by a drive in order to free a workpiece that can be accommodated in the workpiece holder from adhering machining fluid. The machining fluid is removed by the centrifugal force generated by the rotation. Such a centrifugal station is known from DE 102005043602, for example.
    The centrifugal station removes machining fluid adhering to the outside of the workpiece relatively well. However, it is difficult to remove machining fluid from workpieces with internal areas using a centrifugal station. Furthermore, the distance on the outside is not yet optimal either.
    The object of the present invention is therefore to improve the removal of machining fluid from workpieces, in particular from toothed workpieces.
    According to the invention, this object is achieved by a centrifugal station according to claim 1 and a compressed air cleaning arrangement according to claim 16.
    The present invention provides a centrifugal station for removing a machining fluid from workpieces, in particular from toothed workpieces. The centrifugal station has a workpiece holder which can be set in rotation by a drive in order to free a workpiece that can be accommodated in the workpiece holder from adhering machining fluid. According to the invention, the centrifugal station has at least one compressed air cleaning arrangement which removes machining fluid that adheres to a region of the workpiece by blowing compressed air on it. The compressed air cleaning arrangement can in particular remove machining fluid that adheres to an inner and / or to an outer area of the workpiece by blowing compressed air on it.
    By blowing compressed air on according to the invention, a significantly improved removal of machining liquid is achieved. The compressed air cleaning arrangement according to the invention thus in particular enables machining fluid to be removed from areas of the workpiece from which it cannot or can only be removed with difficulty by spinning on the spinning station, and / or additional cleaning of the outer circumference of the workpieces. The present invention thus provides a considerably better removal of machining fluid.
    The compressed air cleaning arrangement according to the invention can comprise a rod in the head area of which a compressed air outlet is arranged. In particular, this compressed air outlet can be connected to a compressed air source through a longitudinal bore in the rod.
    By designing the compressed air cleaning arrangement as a compressed air lance or as a rod with a compressed air outlet arranged in the head area, the compressed air cleaning arrangement according to the invention can be introduced into a bore in the workpiece, and thus purify it in a targeted manner. The compressed air cleaning arrangement preferably has an outside diameter which is smaller than the inside diameter of the bore to be cleaned.
    The compressed air cleaning arrangement according to the invention is designed in a second embodiment as an outer circumference cleaner which can be used for cleaning the outer circumference of the workpiece with compressed air.
    The outer circumference cleaner preferably has a compressed air outlet which extends in the form of one or more nozzles around a central cleaning area. The workpiece can be arranged in the central cleaning area so that its outer circumference is blown and cleaned by compressed air flowing out of the compressed air outlet.
    In particular, the compressed air outlet of the outer circumference cleaner can be an annular nozzle. Alternatively, however, several point-shaped or line-shaped nozzles can be arranged in a ring around the central cleaning area.
    The air outlet and in particular the one or more nozzles are preferably directed obliquely inward. The air flows out preferably at an angle between 10 ° and 80 °, more preferably between 20 ° and 70 ° to the plane of the air outlet and / or to the longitudinal axis of the workpiece. As a result, the machining liquid is moved by the air flow in the axial direction on the outer circumference of the workpiece.
    Furthermore, the centrifugal station according to the invention preferably has a displacement arrangement through which a compressed air outlet of the compressed air cleaning arrangement can be displaced with respect to the workpiece. In particular, the compressed air cleaning arrangement and in particular the compressed air lance and / or the outer circumference cleaner can be moved as a whole. The method enables the compressed air outlet to be directed specifically past areas of the workpiece that are to be cleaned.
    In one possible embodiment, the compressed air cleaning arrangement, in particular the compressed air lance, can be moved through a bore in the workpiece. In particular, the compressed air cleaning arrangement and in particular the compressed air lance is connected to the displacement arrangement in an end region opposite the compressed air outlet and is preferably displaceable in a guide in the longitudinal direction.
    In a further embodiment, the compressed air cleaning arrangement, in particular the outer circumference cleaner, can be moved along the outer circumference of the workpiece parallel to the longitudinal axis of the workpiece and / or parallel to the axis of rotation of the centrifugal station.
    [0018] The workpiece can preferably be cleaned by the compressed air cleaning arrangement while the workpiece is being spun. In particular, the compressed air cleaning arrangement can be used for cleaning a shaft bore in the workpiece, i.e. for a bore provided centrally within the workpiece, and / or for cleaning the outer circumference.
    The centrifugal station according to the invention can in one possible embodiment comprise two compressed air cleaning arrangements, in particular two different compressed air cleaning arrangements and / or two compressed air cleaning arrangements for cleaning different areas of the workpiece, in particular a compressed air lance and an outer circumference cleaner. The two compressed air cleaning arrangements can preferably be moved independently of one another. In particular, the two compressed air cleaning arrangements can have separate displacement arrangements. Furthermore, a control can be provided via which the two compressed air cleaning arrangements are moved in parallel.
    In one embodiment, the compressed air cleaning arrangement is arranged on a workpiece holder of the workpiece spindle and / or passed through a workpiece holder of the workpiece spindle. In particular, this enables a shaft bore of the workpiece to be cleaned by the compressed air cleaning arrangement while the workpiece is clamped in the workpiece spindle of the centrifugal station.
    The compressed air cleaning arrangement is preferably arranged on the lower workpiece holder of the workpiece spindle. The axis of rotation of the workpiece spindle preferably runs vertically.
    The compressed air cleaning arrangement is also preferably arranged on a workpiece holder of the workpiece spindle, which rotates with the workpiece without its own drive. The drive is thus attached to the workpiece holder of the workpiece spindle opposite the compressed air cleaning arrangement. This means that too many components do not have to be arranged on a single workpiece holder.
    [0023] The workpiece holder on which the compressed air cleaning arrangement is arranged can also advantageously be moved in the longitudinal direction. In particular, the workpiece holder can be moved up to the workpiece from below and lift it so that it comes into engagement with the upper workpiece holder.
    Advantageously, the compressed air cleaning arrangement can be moved with respect to the workpiece holder and, in particular, can be moved into the shaft bore of a workpiece clamped on the workpiece spindle.
    According to the invention it can be provided that the compressed air cleaning arrangement can rotate with the workpiece holder of the workpiece spindle. For this purpose, the compressed air cleaning arrangement is preferably connected to a compressed air source via a rotary leadthrough.
    The compressed air cleaning arrangement can move longitudinally through the workpiece holder. In particular, the compressed air cleaning arrangement is connected in a rear area to a displacement arrangement by means of which it can be displaced through the workpiece holder into a shaft bore of the workpiece. The workpiece holder also serves as a guide for the longitudinal displacement of the compressed air cleaning arrangement.
    The opposite workpiece holder can have a cavity extending the shaft bore into which a head of the compressed air cleaning arrangement can at least partially be moved. This preferably makes it possible to move the compressed air cleaning arrangement through the shaft bore so far that a compressed air outlet arranged in the head region of the shaft bore protrudes beyond the workpiece.
    The workpiece is preferably arranged on the lower workpiece holder in such a way that machining fluid can run off from the shaft bore of the workpiece. In particular, the workpiece holder can be a centering cone, on the outer circumference of which grooves are provided. The machining fluid and the compressed air can escape from the shaft bore through these grooves. The compressed air cleaning device preferably passes centrally through this centering cone.
    The upper workpiece holder of the workpiece spindle, on the other hand, can seal off the shaft bore. In particular, the upper workpiece holder can have an inner contour with which it can be placed on the upper side of the workpiece in a frictionally engaged manner. The sealing support of the upper workpiece holder prevents compressed air from escaping in this area.
    The compressed air cleaning arrangement is preferably designed in such a way that the compressed air outlet of the compressed air cleaning arrangement directs the compressed air flow obliquely backwards from a head region of the compressed air cleaning arrangement. The compressed air therefore flows back from the head area in a gap between the compressed air cleaning arrangement and the inner contour of the shaft bore. For this purpose, a compressed air channel, which is directed obliquely backwards and which leads to the compressed air outlet, is preferably provided in the head area.
    The compressed air cleaning arrangement can have a rod part and a head part, wherein the compressed air is supplied through a longitudinal bore in the interior of the rod part and passed through an area remaining free between the rod part and the head part to the outside to the compressed air outlet. In particular, the head part can be a separate element which is connected to the rod part.
    The compressed air cleaning arrangement preferably has an essentially circular cross section, at least in the area of the compressed air outlet. The compressed air is preferably let out through the compressed air outlet in the circumferential direction. The compressed air outlet can consist of several openings which are provided in the circumferential direction on the compressed air cleaning arrangement and / or around an annular outlet which completely penetrates the outer circumference of the compressed air cleaning arrangement.
    According to the invention, the compressed air cleaning arrangement, or a part thereof, can be designed as an exchangeable part in order to be adapted to different workpieces. In particular, the compressed air cleaning arrangement can thereby be adapted to different inside diameters and / or outside diameters and / or lengths of the shaft bore or of the workpiece. If necessary, however, only the head part of the compressed air cleaning arrangement can be exchanged for this purpose.
    Furthermore, one or both workpiece supports can be replacement parts. This means that the centrifugal station can be adapted to different workpieces.
    In particular, the centrifugal station has in the region of one of the workpiece receptacles in each case a rotary bearing with a bearing element into which the workpiece support is inserted. A quick connector can be provided for this purpose.
    The compressed air cleaning arrangement preferably forms part of the workpiece holder to be exchanged and can be exchanged with it. For mounting on the centrifugal station, the compressed air cleaning arrangement is furthermore preferably connected in its rear area to the displacement arrangement arranged there. The compressed air is preferably supplied through a rotary leadthrough with which the compressed air cleaning arrangement is connected to the displacement arrangement.
    In one possible embodiment, the compressed air cleaning arrangement, in particular the outer circumference cleaner, can comprise a nozzle body with a cavity which is connected to a compressed air source and supplies the nozzle or nozzles with compressed air.
    Furthermore, the nozzle body can be arranged on a displacement arrangement. The nozzle body can preferably be moved along the outer circumference of the workpiece parallel to the longitudinal axis of the workpiece by means of the movement arrangement.
    The displacement arrangement can be mounted on a spindle carrier.
    Furthermore, the displacement arrangement preferably has a displacement path which is greater than or equal to the maximum span of the workpiece holder.
    In one possible embodiment, the compressed air cleaning arrangement, in particular the outer circumference cleaner, can comprise an annular hollow body. The annular cavity in the interior of the hollow body is preferably connected to a compressed air source. Furthermore, one or more nozzles through which compressed air is blown out can be arranged on an inner circumference of the hollow body. In particular, an annular nozzle can be provided.
    The nozzle body is preferably an exchangeable part. The nozzle body can be releasably connectable to the displacement arrangement.
    The centrifugal station according to the invention preferably has a control for actuating the compressed air cleaning arrangement and / or for moving the compressed air cleaning arrangement. The control can be designed in such a way that the compressed air cleaning arrangement is first moved into the bore of the workpiece and in particular completely through it at a first speed, and then moves out again at a second, preferably slow speed. In this case, compressed air is preferably blown out only when moving in one direction, in particular when moving the compressed air cleaning arrangement downwards. Preferably, compressed air is only blown out when it is extended. The control can take place electronically, hydraulically and / or pneumatically.
    In a further embodiment, the controller can initially move the compressed air cleaning arrangement at a first speed along the outer circumference of the workpiece in a first direction and in particular completely past this and then back again in the opposite direction at a second, preferably slower speed. In this case, compressed air is preferably blown out only when moving in one direction, in particular when moving the compressed air cleaning arrangement downwards. The control can take place electronically, hydraulically and / or pneumatically.
    Furthermore, the pressure of the compressed air supply or the travel speed, especially when cleaning the workpiece, can be changed and / or regulated depending on the position of the blower nozzles in order to improve the cleaning effect on workpieces with different bore and / or outer diameters. For example, a higher pressure or a slower travel speed can be used if the bore becomes larger or the outer diameter becomes smaller.
    The control can be designed in such a way that it actuates the compressed air cleaning arrangement while the workpiece is rotating in the workpiece spindle and / or after the spinning process has ended. In one possible embodiment, the compressed air cleaning arrangement can be moved in a first direction before or during the spinning process and in a second direction after the spinning process has already been carried out and / or ended for a certain period of time. The controller preferably controls the centrifugal station and / or the compressed air cleaning arrangement automatically.
    As shown above, the compressed air cleaning arrangement according to the invention is preferably used in the context of a centrifugal station according to the invention. However, in possible embodiments of the present invention, the compressed air cleaning arrangement according to the invention can also be used separately from a centrifugal station or independently of a centrifugal station in order to clean toothed workpieces from machining fluid.
    The present invention therefore further comprises a compressed air cleaning arrangement for removing a machining fluid from toothed workpieces, the compressed air cleaning arrangement removing machining fluid that adheres to a region of the workpiece by blowing compressed air on it. The compressed air cleaning arrangement can in particular remove machining fluid that adheres to an inner and / or to an outer area of the workpiece by blowing compressed air on it.
    The compressed air cleaning arrangement is preferably designed in such a way as has already been shown in more detail above.
    In particular, the compressed air cleaning arrangement according to the invention can be designed as a compressed air lance in a first embodiment. In particular, the compressed air lance is used to clean a bore in a workpiece.
    The compressed air cleaning arrangement can comprise a rod, in the head area of which a compressed air outlet is arranged, which is preferably connected to a compressed air source through a longitudinal bore in the rod.
    The compressed air outlet of the compressed air cleaning arrangement directs the compressed air stream preferably from a head region of the compressed air cleaning arrangement obliquely to the rear, for which purpose a compressed air channel directed obliquely backwards leads to the compressed air outlet preferably in the interior of the head region.
    The compressed air cleaning arrangement can have a rod part and a head part, the compressed air being supplied through a longitudinal bore in the rod part and guided to the compressed air outlet through an area that remains free between the rod part and the head part.
    The compressed air cleaning arrangement according to the invention is designed in a second embodiment as an outer circumference cleaner which can be used to clean the outer circumference of the workpiece with compressed air.
    The outer circumference cleaner preferably has a compressed air outlet which extends in the form of one or more nozzles around a central cleaning area. The workpiece can be arranged in the central cleaning area so that its outer circumference is blown and cleaned by compressed air flowing out of the compressed air outlet.
    In particular, the compressed air outlet of the outer circumference cleaner can be an annular nozzle. Alternatively, however, several point-shaped or line-shaped nozzles can be arranged in a ring around the central cleaning area.
    The air outlet and in particular the one or more nozzles are preferably directed obliquely inward. The air flows out preferably at an angle between 10 ° and 80 °, more preferably between 20 ° and 70 ° to the plane of the air outlet and / or to the longitudinal axis of the workpiece. As a result, the machining liquid is moved by the air flow in the axial direction on the outer circumference of the workpiece.
    The compressed air cleaning arrangement can preferably be moved into a bore in the workpiece and / or along the outer circumference of the workpiece.
    The compressed air cleaning arrangement preferably has a displacement arrangement by means of which a compressed air outlet of the compressed air cleaning arrangement can be displaced relative to the workpiece. Preferably, the compressed air cleaning arrangement and in particular the compressed air lance and / or the outer circumference cleaner can be moved.
    The displacement arrangement can act on a rear region of the compressed air cleaning arrangement and in particular the compressed air lance and move it in the longitudinal direction. Furthermore, a guide for the compressed air cleaning arrangement can be provided.
    The compressed air cleaning arrangement preferably has a control for actuating the compressed air cleaning arrangement and / or for moving the compressed air cleaning arrangement.
    In one embodiment, the control is preferably designed such that the compressed air cleaning arrangement initially moves into the bore of the workpiece and in particular completely through it at a first speed, and then moves out again at a second, preferably slow speed. In this case, compressed air is preferably blown out only when moving in one direction, in particular when moving the compressed air cleaning arrangement downwards. Preferably, compressed air is only blown out when it is extended.
    In a further embodiment, the controller can initially move the compressed air cleaning arrangement at a first speed along the outer circumference of the workpiece in a first direction and in particular completely past this and then back again in the opposite direction at a second, preferably slower speed. In this case, compressed air is preferably blown out only when moving in one direction, in particular when moving the compressed air cleaning arrangement downwards.
    Furthermore, the pressure of the compressed air supply or the travel speed, especially when cleaning the workpiece, can be changed and / or regulated depending on the position of the blower nozzles in order to improve the cleaning effect on workpieces with different bore and / or outer diameters. For example, a higher pressure or a slower travel speed can be used from the moment when the bore becomes larger or the outer diameter becomes smaller.
    If the compressed air cleaning arrangement is not used in a centrifugal station, as was shown above, it is preferably combined with a holding arrangement for the workpiece. In particular, the holding arrangement can be a gripper which holds the workpiece, for example, on its outer circumference and / or on its front edges and / or a shaft bore. The compressed air cleaning arrangement can then be used to free the inner area of the workpiece and in particular an inner bore of a machining fluid, and / or to free an outer area of the workpiece and in particular the outer circumference of a machining fluid.
    A cleaning station not according to the invention comprises at least one, preferably two, compressed air cleaning arrangements as described above. In particular, the cleaning station can include two different compressed air cleaning arrangements and / or two compressed air cleaning arrangements for cleaning different areas of the workpiece, in particular a compressed air lance and an outer circumference cleaner. The two compressed air cleaning arrangements can preferably be moved independently of one another. In a possible embodiment, however, both compressed air cleaning arrangements can be moved by a common movement arrangement.
    The outer contour can be freed of processing liquid by a centrifugal station and / or the compressed air cleaning arrangement. The centrifugal station can, however, be provided separately from the compressed air cleaning arrangement and be arranged in front of or behind the compressed air cleaning arrangement in the processing sequence. In particular, the compressed air cleaning arrangement can clean a workpiece while it is being gripped by a converter.
    The present invention further comprises a gear cutting machine with a centrifugal station, as it was described above, and / or with a compressed air cleaning arrangement, as it was also described above. In particular, the gear processing machine is used for the hard fine machining of pre-cut workpieces. In particular, the gear machining machine can be a grinding machine.
    The gear processing machine preferably comprises a main processing station on which the workpieces are gear-processed, in particular hard-finished, and in particular ground. Furthermore, a transport arrangement is preferably provided, via which the workpieces can be transported from the main processing station to the centrifugal station and / or to the compressed air cleaning arrangement. In particular, it can be a converter. In particular a ring converter.
    The present invention comprises a method for machining a workpiece, comprising the steps of:Gear machining of the workpiece andRemoval of machining fluid adhering to an area of the workpiece by blowing compressed air on it.
    In particular, machining fluid that adheres to an inner and / or to an outer region of the workpiece can be removed by blowing compressed air onto it.
    In particular, the method according to the invention can be used to remove machining fluid from bores in the workpiece, and in particular a shaft hole in the workpiece, and / or to free the outer circumference of a workpiece from machining fluid.
    The method according to the invention preferably further comprises the step of removing machining fluid adhering to the workpiece by a centrifugal process in which the workpiece rotates. The workpiece is preferably spun at a speed between 500 and 5000 revolutions per minute.
    The step of removing machining fluid with compressed air and the step of spinning can take place at the same time. Alternatively, however, it is also possible to carry out one of the two steps first and only then to carry out the other step.
    Both steps can be carried out at the same station. Alternatively, the workpiece is transported from a station at which the first cleaning step is carried out to a further station at which the further cleaning step is carried out.
    The method according to the invention is preferably carried out using a centrifugal station and / or a compressed air cleaning arrangement and / or a gear processing machine, as each shown above.
    The present invention is used in particular to free bores which extend along the longitudinal axis of the workpiece from machining fluid. In this way, however, transverse bores which extend from such a longitudinal bore can also be cleaned if necessary. Furthermore, the present invention can be used for cleaning the outer circumference of a workpiece.
    The cleaning according to the invention preferably ensures that the workpieces are drip-free for a period of at least 10 minutes, more preferably at least 30 minutes.
    The present invention will now be illustrated in more detail with reference to exemplary embodiments and drawings.
    1 shows an embodiment of a centrifugal station according to the invention with a first embodiment of a compressed air cleaning arrangement according to the invention in a side view, FIG. 2: a detailed view of the view shown in FIG Fig. 3: Another detailed view from the view shown in Fig. 1, which shows the lower workpiece holder of the workpiece spindle and the compressed air cleaning arrangement, Fig. 4: A detailed view of the workpiece clamped in the workpiece spindle in Fig. 1 with the compressed air cleaning arrangement penetrating it, Fig. 5: a detailed view of the upper workpiece holder of the workpiece spindle and the head area of the compressed air cleaning arrangement, Fig. 6: a further detailed view of the upper workpiece spindle and the head area of the compressed air cleaning arrangement, Fig. 7: a detailed view of the head area of the compressed air cleaning arrangement 8: three representations showing the course of a cleaning method according to the invention; , and FIG. 10: three views showing the course of a cleaning method according to the invention in a further alternative embodiment of the compressed air cleaning arrangement, which is adapted to a workpiece with a larger inner diameter Exemplary embodiment of a compressed air cleaning arrangement according to the invention is provided, in a side view, FIG. 12: an enlarged illustration of the two compressed air cleaning arrangements used in the exemplary embodiment in FIG. 11, FIG. 13: the nozzle body of the second embodiment of a cleaning station not according to the invention in two end positions of the travel path, Fig. 14a: an embodiment of a centrifugal station according to the invention with the second embodiment of a compressed air cleaning arrangement according to the invention, in a maximum extended position of the travel arrangement, Fig. 14b: the one in Fig 14a an embodiment shown in a central extended position of the displacement arrangement, FIG. 14c: the embodiment shown in FIGS. 14a and 14b in a minimal extended position of the displacement arrangement, Variant, and FIG. 16: an enlarged illustration of the nozzle body of the compressed air cleaning arrangement shown in FIG. 15.
    In Fig. 1 to 16 an embodiment of a centrifugal station according to the invention is shown, in Fig. 1 to 10 a first embodiment of a compressed air cleaning arrangement according to the invention is integrated in this centrifugal station, in Fig. 11 to 13 additionally a second embodiment of a compressed air cleaning arrangement according to the invention, and the second embodiment of a compressed air cleaning arrangement according to the invention.
    The centrifugal station is a stand-alone solution, which can be arranged on its own foundation 3 via the stand 2. The independent arrangement of the centrifugal station opposite a gear processing machine prevents the transmission of vibrations from the centrifugal station to the gear processing machine.
    The centrifugal station has a workpiece spindle with an upper workpiece holder 5 and a lower workpiece holder 6, between which a workpiece 11 can be clamped. The upper workpiece spindle 5 can be driven via the drive 7. As can be seen more clearly in FIGS. 3 and 6, the workpiece spindles 5 and 6 are connected via bearings 30 and 23 on an upper spindle support 4bzw. a lower mirror support 8 rotatably mounted. The upper spindle carrier 4 is firmly connected to the stand 2 and is therefore not adjustable in height. The lower spindle carrier 8, on the other hand, is arranged on the stand 2 so that it can be moved in the vertical direction. For this purpose, the lower spindle carrier 8 is arranged to be linearly displaceable on a guide 10 of the stand 2 and can be adjusted via an actuator 9, in the exemplary embodiment a hydraulic cylinder. A reverse arrangement of the height adjustment, in which the upper spindle carrier moves down onto the stationary lower spindle carrier, is also conceivable.
    A workpiece can be received in the workpiece spindle in that the lower workpiece holder 6 is moved over the lower spindle carrier 8 to a workpiece 11 gripped by a gripper, lifts this and then moves it against the upper workpiece holder 5. The workpiece 11 is preferably frictionally connected to the upper workpiece holder 5 and can thereby be set in rotation via the drive 7.
    Advantageously, the workpiece 11 is rotated in the spinning mode at a speed between 500 revolutions per minute and 5000 revolutions per minute in order to remove cooling lubricant residues adhering to the outer circumference of the workpiece.
    In the first exemplary embodiment shown in FIGS. 1 to 10, the centrifugal station furthermore has a compressed air cleaning arrangement 12 according to the invention, which is used to also free the shaft bore of the workpiece 11 from cooling lubricant. As can be seen in FIG. 2, the compressed air cleaning arrangement 12 is a compressed air lance which can be inserted into the shaft bore of the workpiece 11 and removes the cooling lubricant present there by blowing compressed air on it.
    The compressed air lance 12 can be moved into and out of the shaft bore via a movement arrangement. For this purpose, a rear area of the compressed air lance 12 is attached to a slide 14 which is linearly displaceable on a guide 15. In order to move the slide 14, it is connected to an actuator 13, in the present case a hydraulic cylinder, and can be moved linearly along the guide 15 via this. The direction of travel of the slide is parallel to the longitudinal extension of the compressed air lance 12. The hydraulic cylinder has hydraulic chambers which can be supplied with hydraulic fluid via the hydraulic connections 16 and 17 in order to actuate the travel arrangement.
    The compressed air lance 12 is arranged in the area of the lower workpiece holder 6 of the workpiece spindle and passes centrally through it. As a result, the compressed air lance can be moved into the shaft bore of the workpiece 11 while it is clamped on the workpiece spindle. The compressed air lance 12 is mounted in the lower workpiece holder 6 so as to be displaceable along its length. In addition, this arrangement means that the compressed air lance does not get in the way when loading the lower workpiece holder 6. The displacement arrangement with the guide 15 is attached to the lower spindle carrier 8 and can thus move the compressed air lance 12 relative to the lower spindle carrier 8 and thus the lower workpiece holder 6.
    The compressed air lance 12 can rotate with the lower workpiece spindle 6. For this purpose, the rear area of the compressed air lance 12 is rotatably attached to the slide 14 of the displacement arrangement. In this way, the cleaning by the compressed air cleaning arrangement can take place while the workpiece is rotated in the workpiece spindle at the same time, i. H. during the spin process.
    The compressed air lance 12 is tubular and has a compressed air channel 34 in its interior, which is connected to a compressed air supply 19, not shown in detail. For this purpose, a rotary feedthrough 18 is provided in the area of the connection between the compressed air lance 12 and the displacement arrangement, via which the compressed air duct 34 in the interior of the tubular compressed air lance 12 is connected to the compressed air supply.
    As shown in more detail in particular in FIGS. 5 and 7, the compressed air, which is guided through the compressed air lance via the compressed air channel 34, is guided laterally outward in its head area. For this purpose, the compressed air lance has a circumferentially arranged compressed air outlet 39 in its head area.
    The compressed air is blown obliquely backwards from the compressed air outlet 39. For this purpose, the compressed air outlet 39 is connected to the compressed air supply via a compressed air channel 38 running obliquely backwards inside the compressed air lance.
    In the exemplary embodiment, the flow of compressed air is deflected via a head part 35 which is fastened to the end face of the pipe part 33, in particular is screwed via a thread 37. The outer contour of the end face of the pipe part 33 and the inner contour of the head part 35 are each conical, and thus result in the compressed air channel 38, which is directed obliquely backwards.
    The head part 35 preferably has a larger diameter than the pipe part 33 in order to guide the compressed air downwards or backwards.
    The compressed air flowing out of the compressed air outlet 39 on the circumferential side drives the cooling lubricant adhering in the area of the shaft bore 36 downwards along the gap 24 between the compressed air lance and the inner wall of the shaft bore 36 and outwards via cross bores 25, which the workpiece has.
    In order to allow the cooling lubricant and the compressed air to flow away in a lower region of the workpiece, the workpiece rests on a support part 21 of the lower workpiece holder, which has grooves 26 on its outer circumference. The support part 21 forms a centering cone on which the workpiece sits with its end inner contour. Only here can the main amount of the compressed air soak through the milled recesses 26 and thereby also drive the cooling lubricant out of the bore.
    The upper workpiece holder 5, on the other hand, has a receiving part 27 which frictionally connects the drive 7 to the upper edge 32 of the workpiece.
    The receiving part 27 has a region 28 made of a material with a high coefficient of friction. This receiving part 27 has a receptacle into which the workpiece can be inserted with its upper outer contour. Furthermore, a cavity 31 is provided above the shaft bore 36 in the receiving part 27 which extends the shaft bore 36 and has a diameter which is at least as large as that of the shaft bore. As a result, the compressed air lance 12 can be moved completely through the shaft bore 36, namely so far that the compressed air outlet 39 is arranged above the upper end face of the workpiece 12. This allows the shaft bore to be cleaned completely from top to bottom. In the completely extended position, the head area and in particular the head part 35 of the compressed air lance come to be arranged in the cavity 31.
    The upper receiving part 27 forms an interchangeable part which can be adapted to the respective workpiece. It is connected via a quick connector 55 to a mounting element 29 which rotatably mounts the upper workpiece holder 5 via the bearings 30.
    In the same way, the lower support part 21 forms an interchangeable part which can be connected to a bearing part 22 via a quick connector. The bearing part 22 supports the lower workpiece holder 6 on the lower spindle carrier 8 via the bearings 23.
    The compressed air lance 12 also forms an interchangeable part which can be exchanged together with the lower support part 21 and thereby adapted to the workpiece to be cleaned. The compressed air lance is designed in such a way that only a small gap remains between the outer circumference of the compressed air lance and the smallest inner diameter of the shaft bore.
    As shown in FIG. 8, at the beginning of the cleaning process, the compressed air lance 12 is first passed quickly and completely through the shaft bore of the workpiece. As already described above, the compressed air outlet 39 preferably comes to lie above the upper front edge of the workpiece. Compressed air is then blown out and the compressed air lance is moved back more slowly. As can be clearly seen in FIG. 8, the cooling lubricant flows downwards along the gap 24 between the compressed air lance 12 and the inner contour of the shaft bore 36 and escapes either through transverse bores 25 or the grooves 26 of the lower support part. The compressed air lance is moved downward so far that the compressed air outlet 39 is located in the area in which the workpiece rests on the lower support part 21. This completely removes the cooling lubricant from the shaft bore 36.
    The cleaning process by the compressed air lance according to the invention preferably takes place during the spinning process. The centrifugal station preferably has a control which coordinates the movement of the compressed air lance 12, the blowing out of the compressed air and the rotation of the workpiece spindle by the drive 7.
    After the cooling lubricant has been removed, the workpiece 11 can be gripped using a gripper. The lower workpiece holder 6 then moves downward over the displacement arrangement 10 so that the workpiece can be removed.
    The present invention can be used with any type of toothed workpiece. It is particularly preferably used for rotationally symmetrical workpieces with external and / or internal teeth. It is particularly preferably used for rotationally symmetrical workpieces with a central shaft bore.
    Particular advantages arise in particular in the case of wave-shaped workpieces, especially those with a bore, i.e. H. for workpieces whose length is greater than their diameter. 9 shows a workpiece which is longer than the workpiece shown in FIGS. 1 to 8 and has a narrower shaft bore. The adaptation to such a workpiece is carried out by a corresponding exchange of the lower support part 21 together with the compressed air lance 12, as well as the upper receiving part 27. In the same way, the adaptation to the workpiece shown in Fig. 10, which has a further shaft bore and is shorter than the other workpieces .
    In the exemplary embodiments shown so far, the compressed air cleaning arrangement was used to free an inner region of the workpiece and in particular a shaft bore of the workpiece from adhering machining fluid by blowing compressed air on it.
    A compressed air cleaning arrangement according to the present invention can, however, also be used to remove machining liquid adhering to an outer region of the workpiece by blowing compressed air, and in particular to remove machining liquid adhering to an outer circumference of the workpiece by blowing compressed air. For this purpose, the centrifugal station according to the invention preferably has a correspondingly configured compressed air cleaning arrangement.
    In Fig. 11 an embodiment of the centrifugal station according to the invention is now shown, which in addition to the first embodiment of a compressed air cleaning arrangement for cleaning an inner area of the workpiece described with reference to FIGS having. The centrifugal station as such is constructed in exactly the same way as has already been described above.
    The second, additionally provided exemplary embodiment of a compressed air cleaning arrangement is designed as an outer circumference cleaner 40. As can also be seen from FIGS. 12 and 13, the outer circumference cleaner has a compressed air outlet with one or more nozzles 49 which surround a central free space 50 and blow compressed air obliquely inward. The free space 50 forms a cleaning area in which a workpiece can be arranged in order to be cleaned.
    In the exemplary embodiment, a nozzle body 47 is provided in the form of a hollow ring body, on the inner circumference of which several nozzles 49 or one ring nozzle 49 are provided. The blowout direction is approx. 45 ° to the longitudinal axis of the workpiece or to the direction of travel of the outer circumference cleaner. The nozzle body 47 has an annular cavity 48 with which the nozzle or nozzles 49 are in communication and which supplies them with compressed air. The cavity 48 is connected to a compressed air source through a compressed air channel, not shown in detail.
    The outer circumference cleaner 40 can be moved in the longitudinal direction of the workpiece. A displacement arrangement 41 to which the nozzle body 47 is attached is provided for this purpose. The displacement arrangement comprises a guide 43 on which a displacement element 45 is mounted so as to be longitudinally displaceable via a slide 44. The displacement element 45 is moved via a cylinder 42. In the exemplary embodiment, this can be a hydraulic or pneumatic cylinder. The direction of movement of the displacement arrangement and in particular of the guide 43 is parallel to the axis of rotation of the workpiece spindle and thus parallel to the longitudinal axis of the workpiece. The nozzle body 47 is connected to the displacement element 45 via a holder arm 46.
    The traversing arrangement 41 is arranged on the lower spindle carrier 8, and is traversed with this.
    In Fig. 12 to 14 the outer circumference cleaner 40 is shown in a maximally upwardly moved position 40 'and a maximally downwardly moved position 40' '. In the position 40' the outer circumference cleaner and in particular its nozzles 49 are located above the upper front edge of the workpiece 11. In the maximally lower position 40 ', the outer circumference cleaner 40 and in particular the nozzle body 47 are located completely below the lower edge of the workpiece 11.
    The lower position 40 ″ represents the starting position of the outer circumference cleaner. It assumes this in particular when the workpieces are to be changed. To carry out the cleaning, the outer circumference cleaner is then moved to its maximum upper position 40 ' move downwards again at a preferably slower speed, with compressed air being blown out and cleaning the outer circumference of the workpiece 11. The downward speed and the pressure can also be regulated depending on the bore diameter or outer circumference or the travel position in order to improve the cleaning result On the other hand, no air is blown out, preferably faster start-up.
    The cleaning of the outer circumference by compressed air is preferably carried out after or during the execution of the spinning process and ensures an even better cleaning of the outer circumference. In this case, the outer circumference cleaner can, if necessary, be moved into its maximum upper position 40 'before the spinning process, in order not to be contaminated by machining liquid itself that drips down during the spinning process. The outer circumference cleaner can, however, optionally also be moved to its maximum upper position during the spinning process or after the end of the spinning process.
    The nozzle body 47 and / or the holding arm 46 is preferably designed as an exchangeable part, so that this exemplary embodiment of the compressed air cleaning arrangement can also be adapted to the workpiece to be cleaned in each case. However, the same traversing arrangement is advantageously always used. The traversing arrangement therefore preferably has a traverse path which is equal to or greater than the maximum span of the workpiece holder. The same also applies to the displacement arrangement of the first exemplary embodiment of the cleaning arrangement.
    In the exemplary embodiment shown in FIGS. 11 to 13, the two cleaning arrangements for cleaning the shaft bore and for cleaning the outer circumference can be moved via separate displacement arrangements, and can thus be controlled independently of one another. However, they are preferably moved parallel to one another by the machine control. In an alternative embodiment, however, the two cleaning arrangements could also be displaceable via a common displacement arrangement.
    14 to 16 show further exemplary embodiments of the present invention in which only one cleaning arrangement is provided for cleaning external areas of a workpiece. The exemplary embodiment used in FIG. 14 is the centrifugal station according to the invention as shown in FIGS. 11 to 13, but the first cleaning arrangement in the form of a compressed air lance used in FIGS. 1 to 7 was dispensed with. This is used, for example, when the workpieces do not have a bore. 14a to 14c show three positions of the outer circumference cleaner during the cleaning process.
    15 and 16 show a further exemplary embodiment of a centrifugal station according to the invention, which is used for cleaning a gear. The gear wheel is clamped in its shaft bore in the workpiece spindle via receiving cones 51 and 52. The shaft bore is not cleaned with compressed air here. According to the invention, however, an outer circumference cleaner is provided, as is already used in the exemplary embodiments shown in FIGS. 12 to 15. Here, only the diameter of the nozzle body 47 has been adapted accordingly to the outer circumference of the gear wheel 53.
    Even if the shaft bore is not cleaned here by a compressed air cleaning arrangement, recesses 26 are provided in the outer circumference of the receiving cone 52, through which machining fluid can drain downwards. Due to the short length of the shaft bore, the spinning process is sufficient for this.
    The centrifugal station according to the present invention is preferably integrated into a production line for producing toothed workpieces. In particular, it can be part of a gear processing machine, which, however, is preferably constructed in several parts, so that the main processing station and the centrifugal station are statically separated from one another. A workpiece processed on the main processing station is picked up, for example, via a transfer device or gripper and transported to the centrifugal station, where the cooling lubricant used during the gear cutting process is removed. In one possible embodiment, the main machining station is a station for hard fine machining, in particular for grinding, in particular for generating grinding of gears.
    The cleaning arrangement according to the invention is used in the exemplary embodiments illustrated above as part of a centrifugal station. This is particularly favorable in view of the fact that the compressed air cleaning and the spinning can take place at the same time. Furthermore, the workpiece is completely cleaned in one operation and can then be gripped by a dry gripper.
    In alternative embodiments of the present invention, however, the compressed air cleaning arrangement can also be used separately from or independently of a centrifugal station. In particular, the compressed air cleaning arrangement according to the invention could also be guided through a workpiece or past a workpiece which is held in a gripper. Such a cleaning could take place before, after or instead of a spinning.
    权利要求:
    Claims (22)
    [1]
    1. Centrifugal station for removing a machining liquid from a workpiece (11, 53), with a workpiece holder (5, 6), which can be set in rotation by a drive (7) in order to produce a workpiece in the workpiece holder (5, 6) to free the workpiece (11, 53) from adhering machining liquid,characterized,that the centrifugal station has at least one compressed air cleaning arrangement (12, 40) with a compressed air outlet (39, 49) which removes machining liquid that adheres to an area of the workpiece (11, 53) by blowing compressed air on it.
    [2]
    2. centrifugal station according to claim 1, wherein the compressed air cleaning arrangement (12, 40) has a displacement arrangement (41) through which the compressed air outlet (39, 49) of the compressed air cleaning arrangement (12, 40) relative to the workpiece (11, 53) can be moved, wherein preferably the compressed air cleaning arrangement (12, 40) can be moved.
    [3]
    3. Centrifugal station according to one of claims 1 or 2, wherein the compressed air cleaning arrangement (12) is designed as a compressed air lance, wherein the compressed air lance can be used for cleaning a bore (36) of the workpiece (11).
    [4]
    4. Centrifugal station according to claim 3, wherein the compressed air lance comprises a rod, in the head region of which the compressed air outlet (39) is arranged, which is in communication with a compressed air source through a longitudinal bore (34) of the rod.
    [5]
    5. Centrifugal station according to claim 1 or 2, wherein the compressed air cleaning arrangement is designed as an outer circumference cleaner (40) which can be used for cleaning the outer circumference of the workpiece (11, 53) with compressed air, the outer circumference cleaner (40) having the compressed air outlet, which is in the form one or more nozzles (49) extends around a central cleaning area, which is preferably an annular nozzle, and / or wherein the one or more nozzles (49) are preferably directed obliquely inward.
    [6]
    6. Spin station according to one of the preceding claims, with two compressed air cleaning arrangements (12, 40), wherein preferably one of the two compressed air cleaning arrangements (12, 40) is designed as a compressed air lance (12) and one of the two compressed air cleaning arrangements (12, 40) as an outer circumference cleaner (40) is designed, wherein the compressed air lance can be used to clean a bore (36) of the workpiece (11), and the outer circumference cleaner (40) can be used to clean the outer circumference of the workpiece (11, 53) with compressed air, the outer circumference cleaner (40) the Compressed air outlet, which extends in the form of one or more nozzles (49) around a central cleaning area, which is preferably an annular nozzle, and / or wherein the one or more nozzles (49) are preferably directed obliquely inward, and wherein the two compressed air cleaning arrangements (12, 40) preferably have separate displacement arrangements (41).
    [7]
    7. centrifugal station according to one of the preceding claims, wherein the centrifugal station is configured so that the cleaning of the workpiece (1153) by the respective compressed air cleaning arrangement (12, 40) during the spinning and / or after the spinning of the workpiece (11, 53) can be carried out is.
    [8]
    8. centrifugal station according to one of claims 3 or 4, wherein the compressed air cleaning arrangement (12) is arranged on the workpiece holder (6) of a workpiece spindle.
    [9]
    9. centrifugal station according to one of claims 3 or 4, wherein the compressed air cleaning arrangement (12) is arranged on the workpiece holder (6) of a workpiece spindle and / or passes through the workpiece holder (6) of a workpiece spindle, the compressed air cleaning arrangement (12) preferably with the The workpiece holder (6) of the workpiece spindle can rotate with it and is connected to a compressed air source (19) via a rotary feedthrough (18), and / or the compressed air cleaning arrangement (12) extends longitudinally through the workpiece holder (6).
    [10]
    10. Centrifugal station according to claim 9, wherein the workpiece holder has a lower workpiece holder (6) and an upper workpiece holder (5), the upper workpiece holder (5) having a cavity (31) extending a shaft bore (36) of the workpiece (11), A head area of the compressed air cleaning arrangement (12) designed as a compressed air lance can at least partially be moved into, and wherein the lower workpiece holder (6) holds the workpiece (11) in such a way that machining fluid can run out of the shaft bore (36) of the workpiece (11) .
    [11]
    11. Centrifugal station according to claim 10, wherein the lower workpiece holder (6) is a centering cone, on the outer circumference of which grooves (26) are provided, and / or wherein the upper workpiece holder (5) of the workpiece spindle seals the shaft bore (36) closes, the upper workpiece holder (5) preferably having an inner contour (28) with which it can be placed on the outer circumference of the workpiece (11) in a frictionally engaged manner.
    [12]
    12. Centrifugal station according to claim 4, wherein the compressed air outlet (39) of the compressed air cleaning arrangement (12) directs the compressed air flow from the head region of the rod obliquely backwards, for which a compressed air duct (38) directed obliquely backwards preferably leads to the compressed air outlet (39), or wherein the rod has a rod part (33) and a head part (35), the compressed air being supplied through a longitudinal bore (34) in the rod part (33) and through an area remaining free between the rod part (33) and head part (35) to the compressed air outlet (39) is performed, wherein the compressed air cleaning arrangement (12) or a part thereof is a replacement part in order to be adapted to different workpieces.
    [13]
    13. Centrifugal station according to one of claims 3, 4, 8, 9, 10, 11 or 12, wherein the compressed air cleaning arrangement has a displacement arrangement (41) through which the compressed air outlet (39) of the compressed air cleaning arrangement (12, 40) opposite the workpiece (11) is movable, with a control for actuating the compressed air cleaning arrangement (12) and / or for moving the compressed air cleaning arrangement (12), the control of the compressed air cleaning arrangement (12) being configured so that it initially enters a bore (36) of the Workpiece (11) can be moved in and in particular completely through it and then moved out again at a second, slower speed, the compressed air cleaning arrangement (12) preferably being designed to blow out the compressed air only when moving out.
    [14]
    14. Centrifugal station according to claim 5 with a control for actuating the compressed air cleaning arrangement (40) and / or for moving the compressed air cleaning arrangement (40), wherein the control is configured such that the compressed air cleaning arrangement (40) initially at a first speed on the outer circumference of the workpiece (11 , 53) along in a first direction and in particular completely past this and then back again in the opposite direction at a second, preferably slower speed, the compressed air cleaning arrangement (40) preferably being designed to blow out the compressed air only when moving in one direction is.
    [15]
    15. Centrifugal station according to claim 13, which is configured so that it can additionally regulate the travel speed and / or the air pressure, depending on the bore diameter at this point, and / or change the travel speed and / or the air pressure depending on the travel position wherein the controller is configured to operate the compressed air cleaning assembly (12) while the workpiece (11) rotates in the workpiece spindle.
    [16]
    16. Compressed air cleaning arrangement (12) for a centrifugal station according to claims 3, 4, 8, 9, 10, 11, 12, 13 and 15 for removing a machining liquid in an area of a workpiece (11) by blowing compressed air, in particular a toothed workpiece , wherein the compressed air cleaning arrangement (12) is designed as a compressed air lance and can be used to clean a bore (36) of the workpiece and the compressed air lance comprises a rod, in the head area of which a compressed air outlet (39) is arranged, which is preferably through a longitudinal bore (34) of the Rod can be connected to a compressed air source (19), the compressed air outlet (39) of the compressed air cleaning arrangement (12) directing the compressed air flow obliquely backwards from a head area of the compressed air cleaning arrangement (12), for which a compressed air channel (38) directed obliquely backwards to the compressed air outlet ( 39) leads.
    [17]
    17. Compressed air cleaning arrangement according to claim 16, with a displacement arrangement (41) through which a compressed air outlet (39) of the compressed air cleaning arrangement (12) can be moved in a longitudinal direction of the compressed air lance, the compressed air cleaning arrangement (12) having a control for actuating the compressed air cleaning arrangement (12) and for moving the compressed air lance.
    [18]
    18. Compressed air cleaning arrangement according to claim 17, wherein the controller is configured so that the compressed air lance initially moves into the bore (36) of the workpiece (11) at a first speed and in particular completely through it and then moves out again at a second, slower speed can, wherein the compressed air cleaning arrangement (12) is preferably designed to blow out the compressed air only when moving out.
    [19]
    19. Compressed air cleaning arrangement (40) for a centrifugal station according to claim 5 or 14, for removing a processing liquid in an area of a workpiece (11, 53), in particular a toothed workpiece, the compressed air cleaning arrangement being designed as an outer circumference cleaner (40) which is used for cleaning of the outer circumference of the workpiece (11, 53) can be used with compressed air, the outer circumference cleaner (40) having a compressed air outlet which extends in the form of one or more inwardly directed nozzles (49) around a central cleaning area, preferably an annular nozzle acts, and wherein the one or more nozzles (49) are preferably directed obliquely inward.
    [20]
    20. Compressed air cleaning arrangement (40) according to claim 19, with a displacement arrangement (41) through which a compressed air outlet (49) of the compressed air cleaning arrangement (40) can be moved in a longitudinal direction of the workpiece, the compressed air cleaning arrangement (40) having a control for actuating the compressed air cleaning arrangement ( 40) and for moving the outer circumference cleaner, the controller being configured in such a way that the outer circumference cleaner (40) initially at a first speed along the outer circumference of the workpiece (11, 53) in a first direction and in particular completely past this and then with a second, preferably slower speed can move back again in the opposite direction, with the movement speed and / or the air pressure, depending on the workpiece diameter at this point, are additionally regulated, and / or with the movement speed and / or the air pressure depending on the Moving position changed can be, wherein the outer circumference cleaner (40) is preferably designed to blow out the compressed air only when moving in one direction.
    [21]
    21. Gear processing machine with a centrifugal station according to one of claims 1 to 15 and / or a compressed air cleaning arrangement (12, 40) according to one of claims 16 to 20, wherein the gear processing machine has a main processing station on which the workpieces (11) can be gear processed and from which they can be transported via a transport arrangement to the centrifugal station or to the compressed air cleaning arrangement (12, 40).
    [22]
    22. A method for machining a workpiece (11) using a gear cutting machine according to claim 21, comprising the steps of:- Gear machining of the workpiece (11),- Transporting the workpiece (11) via the transport arrangement to the centrifugal station or to the compressed air cleaning arrangement (12, 40), and- Removal of machining liquid adhering to an area of the workpiece (11) by blowing compressed air on it.
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    同族专利:
    公开号 | 公开日
    CN105312277A|2016-02-10|
    KR20150136453A|2015-12-07|
    DE102014011133A1|2015-12-03|
    US20150343585A1|2015-12-03|
    CN105312277B|2019-10-22|
    CH709642A2|2015-11-30|
    KR101799345B1|2017-11-20|
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    法律状态:
    2020-09-30| PFA| Name/firm changed|Owner name: LIEBHERR-VERZAHNTECHNIK GMBH, DE Free format text: FORMER OWNER: LIEBHERR-VERZAHNTECHNIK GMBH, DE |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014008022|2014-05-27|
    DE102014011133.4A|DE102014011133A1|2014-05-27|2014-07-25|Centrifugal station and compressed air cleaning arrangement|
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