• 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 device for simultaneous parallel clamping of a plurality of workpieces (9) on a dividing apparatus (1) mounted on a machine tool comprises a stationary jaw (25) and at least one adjustable jaw (11) guided in parallel on guide rods. With a clamping screw between the two jaws (11, 25) inserted and positioned there workpieces (9) can be clamped. It can be several adjustable jaws (11) arranged in series after another and so clamp four or six workpieces simultaneously with a single clamping for machining.
    公开号:CH711906A2
    申请号:CH01094/16
    申请日:2016-08-26
    公开日:2017-06-15
    发明作者:Röthlisberger Oskar
    申请人:Röthlisberger Oskar；
    IPC主号:
    专利说明:

    The invention relates to a device for clamping a plurality of workpieces on a dividing apparatus of a machine tool according to the preamble of patent claim 1.
    For the machining of workpieces, in particular the machining in CNC Werkzeugmaschi-nen the workpieces must be fixed for example on a so-called dividing attachment. With the dividing attachment or another fastening element, the workpieces can then be rotated in various processing positions about the rotation axis in order to carry out the corresponding machining from different directions with a cutting tool. After completion of various operations, the workpiece must be removed from the dividing head or a vise existing there from the machine tool and a new workpiece can be clamped for machining. The clamping and previous positioning of a new workpiece leads to a breakdown of the machine and consequently to costs.
    An object of the present invention is to reduce the time duration for a workpiece change on a CNC machine tool. In other words, it's about reducing make-ready time between processing intervals.
    This object is achieved by a device according to the features of claim 1. Advantageous embodiments of the device are described in the dependent claims.
    With the inventive device it is possible to clamp two or more identical workpieces simultaneously in an exactly defined position and then make their processing without repositioning one after the other, without having to spend more set-up times.
    In a particularly advantageous embodiment of the invention, at the same time four, six or more workpieces can be clamped positioned with the inventive device and machined either simultaneously or sequentially. The clamping of the workpieces takes place after insertion into the device with a single clamping device, in particular with a clamping screw for two or a multiple of workpieces. All workpieces are held with the clamping device evenly and reproducibly accurately stretched for exact machining. The set-up time, ie the time required to clamp two or more workpieces on the machine or on its dividing attachment, is reduced.
    The machining of a plurality of workpieces clamped in the device can be incorporated in a simple manner into the CNC control of the machine tool. Another advantage of the device is that the workpieces are arranged in the device axially in series or in pairs parallel to each other lying on the machine tool. As a result, several workpieces can be processed simultaneously or successively on smaller CNC machine tools with a correspondingly small diameter of the dividing apparatus, since they are not radially adjacent to one another, e.g. are arranged on the dividing apparatus and thereby at most exceed its diameter. Due to the parallel tension one achieves an extremely accurate tension of the workpieces.
    Reference to exemplary embodiments, the invention will be explained in more detail. Show it:
    1 shows a divider of a machine tool (machine tool not shown), with an inventive clamping device with two clamped workpieces,
    2 shows a dividing apparatus of a machine tool (machine tool not shown), with an inventive clamping device with four workpieces,
    3 shows a dividing apparatus of a machine tool (machine tool not shown), with an inventive clamping device with six clamped workpieces,
    4 is a perspective view of an adjustable jaw of the clamping device,
    5 is a perspective view of a stationary jaw of the clamping device with visible support surface on the dividing apparatus,
    6 is a perspective view of the two jaws assembled and with clamped workpieces,
    7 is a perspective view of an adjustable jaw with visible end face and head of the clamping device in the form of a clamping screw,
    8 is a perspective view of a stationary jaw of the clamping device,
    Fig. 9, the two jaws as shown in Fig. 7 and 8 shown assembled with clamped workpieces.
    Fig. 10 is a perspective view of the dividing head with four clamped workpieces and with lateral on proposals and
    11 is an enlarged view of the area A in Fig. 10 and
    12 shows an output arrangement and a counter-tip of a machine tool and clamped therebetween a further embodiment of a clamping device with workpieces clamped parallel to one another on a support.
    With reference numeral 1 is shown schematically as a cube denoted a dividing apparatus 1, on which a face plate 3 is arranged rotatably about an axis A. The CNC machine is not shown. On the end face 5 of the face plate 3 of the dividing apparatus 1, which is formed as a perforated disc and on which a clamping device 7 for workpieces 9 can be fastened, the clamping device 7 is fixed for simultaneous clamping of two workpieces 9. The clamping is done in tension and not as usual on pressure. In Fig. 2, the same arrangement is visible, however, the clamping device 7 is designed for clamping four workpieces 9.
    Fig. 3 shows a clamping device 7, on the six workpieces 9 can be tightened simultaneously.
    The individual parts of the clamping devices 7 will be explained in detail below. In Fig. 4, an adjustable jaw, short adjustable jaw 11, in the perspective view. This comprises a metal plate with a rectangular or round cross-section. On the visible in Fig. 4 end face 13, a number of through holes 15 are visible. Further, for example, two through holes 17 are provided with a slightly larger diameter and in the region of the four corners of the jaw 11 are each a cylindrical pin 19 on the end face 13 before. The cylindrical bolts 19 may be inserted into suitable holes or screwed into the jaw 11. Next penetrates a clamping element 21, the body of the adjustable jaw 11 in a further through bore.
    In addition to the holes 15 in the end face 3, further blind holes 15 'or threaded holes can be arranged on the side surfaces 23 for stop pins outside the clamping surface.
    As a counterpart to the adjustable jaw 11, a stationary jaw 25 is shown in Fig. 5. Their geometric shape corresponds to that in Fig. 4 and it also includes holes 15, in the same arrangement as in Fig. 4 on the adjustable jaw eleventh
    In the view of the stationary jaw 25 in Fig. 8, two guide rods 27 are further visible, which, when the two jaws 11 and 25 are brought together in the through holes 17 are inserted without play. Next, in Fig. 8, two heads 29 of mounting screws 31 (thread still shown) visible. The threaded portions of the fastening screws 31 are shown in Fig. 5. Further, in Figs. 5 and 8, a threaded bore 33 is formed in which the clamping element 21, for example in the form of a tension screw 21 meshes. The lag screw 21 has a screw head, preferably a Allen head 35 or a hexagonal head with which the lag screw set in rotation and thereby the adjustable jaw 11 can be pulled against the stationary jaw 25 and removed from it.
    In an advantageous embodiment of the device between the jaws 11 and 25 or 25 and 25 compression springs 43 are used in the form of coil springs. The compression springs 43 may be placed on the shaft of the clamping screw 21 and / or on the guide rods 27 (see FIG. 4 with a compression spring 43 for the clamping screw 21). The axial length of the compression springs 43 is matched to the mass of the workpieces 9 to be clamped, i. the compression spring 43 holds the end faces 13 of the jaws 11, 25 and 25, 25 at a distance which makes it possible to place workpieces 9 on the positioning pins 19. When using multiple adjustable jaws 11, the respective weakest spring 43 between the end faces 13 of the dividing apparatus 1 farthest jaw 11 and the adjacent jaw 11, which is closer to the dividing head 1, used. A slightly stronger spring 43 is subsequently slid on either the clamping screw 21 or on the guide rods 27 between the two adjacent jaws 11. The compression spring 43 with the largest spring constant is inserted between the stationary jaw 25 placed on the dividing head 1 or the face plate 3 and the adjacent first adjustable jaw 11.
    Hereinafter, the operation of the device will be described with reference to an example for clamping two workpieces according to FIGS. 1, 4 to 9. On the face plate 3 of the dividing head 1, a stationary jaw 25 is fastened by means of two fastening screws 29. The stationary jaw is mounted concentrically to the axis of rotation A of the dividing apparatus. On the now precisely seated on the dividing head 3 cheek 25 an adjustable jaw 11 is pushed, on the two of the stationary jaw 25 vertically projecting guide rods 27 which engage in the through holes 17. The adjustable jaw 11 is now axially free of play and their opposite end faces are exactly parallel to each other and their distance adjustable. With the clamping screw 21, which engages through the adjustable jaw 11 in the stationary jaw 25 and there into the threaded hole 33, the distance of the adjustable jaw 11 can be adjusted to the dividing head 1. If 25 compression springs 43 are inserted between the jaws 25, 11 and 25, 25, the jaws 11 are held at a mutual distance when loosening the clamping screw 21 with a rotary tool on the head 35, which makes it possible to hang workpieces 9 on the positioning pins 19. First, workpieces 9 are placed on the overhead positioning pins 19. Another workpiece 9 is then still held by hand on the underside of the positioning pins 19 on the last two jaws 25. With a screwdriver, the clamping screw 21 is rotated until the zoomed from below to the jaws 11 workpiece 9 is clamped because there the weakest compression spring 43 can be compressed first. The closer lying on the dividing head 1 spring 43 initially resists this clamping force by the clamping screw 21. It can now from below the next workpiece 9 brought to the lower positioning pins 19, held and by turning the clamping screw 21 and this workpiece 9 are clamped. In a device for clamping of six workpieces 9, the last place for clamping, namely between the stationary jaw 25 and the first adjustable jaw 11 from below the workpiece 9 is brought to the positioning pins 19, held and then by tightening the clamping screw 21 and this clamped.
    After this lay-up and positioning operation, the workpieces 9 can be processed by the machine without re-clamping. After machining, the clamping screw 21 is successively released and it can first be the bottom lying workpieces 9 are removed in reverse order and then the overhead lying on the positioning pins 19. Of course, the device can be operated without compression springs 43, but their handling is natural not as easy as with a compression spring 43.
    Aligning the workpieces 9, in the illustrated examples in the horizontal direction, by aligning, for example, on a vertical side surface of the jaws 11,25 or by stops on the side surfaces 23 of the jaws 11,25 or at least one of Side surfaces 23 of the jaws 11 or 25 are attached, done.
    10 and 11 are on the side surfaces 23 of the jaws 25 and 11, for example, screws 37 screwed into corresponding threaded holes 1511 in the side surfaces 23 and hold positioning elements 39. The positioning elements 39 are in the illustrated examples with a longitudinal slot 41 provided bars. The retaining screws 37 penetrate the slot 41 and the screw heads, preferably hexagonal or Imbusschraubköpfe, abut the two laterally of the slot 41 webs and hold the positioning elements 39 in the desired, substantially horizontal or slightly inclined to the horizontal position. With the positioning elements 39, the position of workpieces 9 in the horizontal direction can be set exactly. Thus, the position of the workpieces 9 is not only determined by the positioning pins 19 in the vertical direction, but the workpieces 9 are also struck unilaterally, thus definitively positioned in the horizontal direction before the clamping screw 21 is tightened at its head 35 and thereby the workpieces 9 between the Baking 11,25 be clamped.
    The thus clamped workpieces can then be either simultaneously or successively by the cutting tools, which are mounted in a CNC machine edit. Machining is possible over an angle of 360 °. With a clamping of two workpieces 9 with only one clamping screw 21, it is consequently possible to machine two workpieces in one clamping.
    2, not only a stationary jaw 25 and a movable jaw 11 are used, but on the first sliding jaw 11, a further movable jaw 11 is placed in the same way and it can thereby four workpieces with a single setting by Train on the device 1 are held and edited.
    In the third embodiment according to FIG. 3, three adjustable jaws 11 are arranged in series, whereby six workpieces 9 can be processed in one clamping. Since the clamping is carried out in series on the axis A of the dividing apparatus 3, a plurality of workpieces can be machined in one clamping on a smaller CNC machine. If these six workpieces were all fastened individually on the dividing apparatus 3, then a much larger dividing apparatus 3 would have to be used, which is only available on larger CNC machines. The advantage of clamping device are smaller mounting dimensions with great clamping force (clamping force on train parallel no tension).
    Depending on the extent of the workpieces 9, in particular in the axial direction of different lengths clamping screws 21 are used. This is true for all three embodiments.
    In a further embodiment of the clamping device according to FIG. 12, the bracing of the workpieces is not axial, that is, in the direction of the axis of rotation of the machine tool, but at right angles thereto.
    On the output side of the machine tool, in the figure, for example, a dividing attachment 1 is shown as an output element, a rod-shaped carrier 45 is arranged frontally against rotation. The opposite end of the carrier 45 is supported by a counter-tip 47 of a support device 49. On a longitudinal side of the carrier 45, a plurality, for example, eight stationary jaws 25 are fastened, which project beyond the carrier 45 or its longitudinal edges. Connected by a respective clamping screw 21, of which one can only recognize the head 35, an adjustable jaw 11 is arranged. The parallel guidance of the adjustable jaw 11 with respect to the carrier 45 is carried out as in the examples described above by guide rods 27, which penetrate the carrier 45 here.
    In Fig. 12 it can be seen that in each case between the stationary jaw 25 and the adjustable jaw 11 up and down a workpiece 9 can be kept clamped. As can be further seen in the example according to FIG. 4, successively or simultaneously eight workpieces 9 can be processed and, after a rotation of the dividing apparatus 1 or face plate 3 of the dividing apparatus by 180 °, the oppositely tensioned workpieces 9 can be subjected to a machining. It is of course also possible to choose the angle of rotation of the face plate 3 arbitrarily, so that not only perpendicular to the surfaces of the clamped workpieces extending holes, threads or surfaces can be generated.
    Particularly advantageous in this embodiment of the invention is the fact that the clamping of the workpieces 9 on the support 45 not only directly on the machine tool, but outside of this can be done and then each, as in the example described here, 16 workpieces at the same time the machine tool arranged
    权利要求:
    Claims (13)
    [1]
    can be. The set-up time or downtime of the machine is thereby reduced to a minimum. At the same time it can be achieved that by the simultaneous clamping of the workpieces, they can be processed with optimum precision. claims
    1. An apparatus for simultaneously clamping a plurality of workpieces on a dividing apparatus (1) with a faceplate (3) on a machine tool for a machining operation, comprising a first stationary jaw (25) and a second jaw (11) for clamping / relative to the first adjustable / Holding a workpiece during processing, characterized in that the stationary jaw (25) first means (31) for their play-free attachment to the machine tool on the dividing apparatus (3) and second means (27) for backlash-free and parallel guidance of the second adjustable jaw (11) and in that the stationary jaw (25) and the adjustable jaw (11) are interconnected with a tensioning tensioning member (21) and generate a parallel tension for simultaneously clamping two workpieces between the two jaws (11,25) ,
    [2]
    2. Apparatus according to claim 1, characterized in that the fixed jaw (25) is mounted on a rod-shaped carrier (45) and the carrier (45) is frontally connected to the machine tool connectable.
    [3]
    3. A device according to claim 2, characterized in that the carrier (45) is connectable to the machine tool and the second means (27) penetrate the carrier (45) perpendicular.
    [4]
    4. Device according to one of claims 1 to 3, characterized in that the clamping element (21) comprises a screw or spindle, with which the relative distance of the two jaws (11,25) is adjustable.
    [5]
    5. Device according to one of claims 1 or 2, characterized in that the first means comprises one or more of the stationary jaw (25) penetrating screws (31) for attachment to the machine tool or the dividing apparatus (1).
    [6]
    6. Device according to one of claims 1 to 5, characterized in that at the opposite end faces (13) of the jaws (11, 25) bores (15) for inserting over the end faces (13) protruding positioning pins (19) are arranged ,
    [7]
    7. Apparatus according to claim 6, characterized in that on the side surfaces 23 of the jaws (11, 25) further threaded bores (15 »1) are designed for screwing positioning or stop pins.
    [8]
    8. Device according to one of claims 1 to 7, characterized in that the second means for guiding the jaws (11,25) in parallel comprise cylindrical guide rods (27) which are fixedly connected to one of the jaws (11,25) and in Through holes (17) on the opposite jaw (11,25) engage and are guided without play.
    [9]
    9. Device according to one of claims 1,2, 7 and 8, characterized in that in series with the first adjustable jaw (11) at least one further adjustable jaw (11) on the guide rods (27) which on the stationary jaw (25 ) are fastened, are held displaceably and by the clamping element (21) is penetrated.
    [10]
    10. Device according to one of claims 1 to 9, characterized in that on the stationary jaw (25) and / or the adjustable jaws (11) on the side surfaces (23) positioning elements (39) are arranged, which the end faces (13) surmount the jaws (11,25).
    [11]
    11. The device according to claim 10, characterized in that the positioning elements (39) by a Flalteschraube (37) are held in desired position and that the Flalteschrauben (37) in holes (15%) with threads in the side surfaces (23) of the jaws (11,25) are screwed.
    [12]
    12. Device according to one of claims 1 to 11, characterized in that between the axially adjacent jaws (25, 11, 25, 25, 25, 25) compression springs (43) on the shank of the clamping screw (21) and / or on a Guide rod (27) are placed and held.
    [13]
    13. The apparatus according to claim 12, characterized in that the compression springs (43) have different spring constants.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP0613757B1|1998-04-15|Workpiece clamping device
    DE3919078C1|1990-02-01|
    EP2846049B1|2017-02-15|Fastening system with eccentric
    EP0602204B1|1997-01-29|Adapter for use with clamping devices on multi-hole machine-tool workpiece tables
    EP0275923A2|1988-07-27|Clamping device for work pieces
    DE4300344A1|1993-07-15|
    DE3737672A1|1989-04-13|HOLDING DEVICE
    WO2017092975A1|2017-06-08|Apparatus for clamping a plurality of workpieces on an indexing attachment of a machine tool
    DE2857655C2|1982-03-18|Device for clamping working pieces on a machine tool table
    DE4130602A1|1993-04-29|CLAMPING DEVICE FOR CENTERING WORKPIECES
    CH711906A2|2017-06-15|Device for clamping a plurality of workpieces on a dividing apparatus of a machine tool.
    EP0761382A1|1997-03-12|Device for positioning pieces in clamping devices
    DE19805833B4|2004-01-29|Connection device for connecting two bodies
    DE835876C|1952-04-07|For holding workpieces etc. Like. Specific facility
    CH692010A5|2002-01-15|Device for clamping and alignment of tool or workpiece in relation to reference base has upper part for clamping the tool or workpiece, lower part for fixture to reference base and devices for connecting upper and lower parts
    DE10241863B3|2004-03-11|Clamping device for prismatic workpiece in computer-controlled universal machine tool with cooperating clamp slide and clamp block|
    DE4407270C1|1995-03-09|Cutting-tip adjusting device
    DE102012104673B3|2013-08-14|Tool, system and method for screwing helical compression springs to a helical plate spring
    DE202021003850U1|2022-01-26|Device for supporting or fixing workpieces, tools and aids on a worktop that includes a large number of bores
    DE102014101598A1|2014-08-21|Mounting system for mounting e.g. toothed rack in machine bed, has eccentric cam including first portion and second portion, which is formed in eccentric relation to first portion and engages with aperture of machine element
    EP0007077A1|1980-01-23|Quick-change tool holder, especially for automatic lathes or similar machine tools
    DE102016105357B4|2019-09-12|Device for increasing separate clamping systems
    EP0588997B1|1997-11-26|Multiple workpiece holding fixture
    EP0390096A2|1990-10-03|Clamping device for workpieces
    DE2145524B2|1974-06-27|Adjustment device for machine tools
    同族专利:
    公开号 | 公开日
    CH711852A1|2017-06-15|
    EP3383580A1|2018-10-10|
    TW201722584A|2017-07-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DD154281A1|1980-11-12|1982-03-10|Heinz Hannover|DEVICE FOR SIMULTANEOUSLY CLAMPING MULTIPLE WORKPIECES|
    US6105948A|1999-07-12|2000-08-22|Young; William L.|Multi-quick jaw assembly|
    AT506161B1|2007-12-10|2011-04-15|Armin Muser|DEVICE FOR CLOSING WORKPIECES|
    US8167291B2|2008-05-05|2012-05-01|Te-Co Manufacturing, Llc|Pin stop jaw plate|
    DE102011012739A1|2011-02-24|2012-08-30|Michael Weinig Ag|Clamping device for workpieces made of wood, plastic and the like|
    TWI461260B|2012-09-18|2014-11-21|Chang Yi Lin|Multi-functional vice base|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    CH01768/15A|CH711852A1|2015-12-03|2015-12-03|Device for clamping a plurality of workpieces on a dividing apparatus of a machine tool.|PCT/EP2016/076914| WO2017092975A1|2015-12-03|2016-11-08|Apparatus for clamping a plurality of workpieces on an indexing attachment of a machine tool|
    EP16794983.3A| EP3383580A1|2015-12-03|2016-11-08|Apparatus for clamping a plurality of workpieces on an indexing attachment of a machine tool|
    TW105136629A| TW201722584A|2015-12-03|2016-11-10|Apparatus for clamping a plurality of workpieces on an indexing attachment of a machine tool|
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