• 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 invention relates to a machine tool (1) having a primary coil (9) for contactless energy and / or signal transmission, with a tool head (2) having a tool holder (4) for a tool (6) which is connected to the primary coil (9) of the machine tool (9). 1) and a means (13) for displacing the primary coil (9) from a decoupled rest position (11) into a coupling position (12) with the secondary coil (10) of the received tool (6). In order to provide a secure and stable contactless Energieund / or signal transmission, it is proposed that the means (13) for displacing the primary coil (9) both at least one spindle head (2) fixedly mounted stop (14) and at least one with primary coil ( 9) connected and moved along counter-stop (15) which cooperates with the stop (14) on the spindle head (2) stationary mounting (36) in the coupling position (12) located primary coil (9) positively.
    公开号:AT513629A4
    申请号:T504992013
    申请日:2013-08-12
    公开日:2014-06-15
    发明作者:Herbert Maringer
    申请人:Wfl Millturn Tech Gmbh & Co Kg；
    IPC主号:
    专利说明:

    -1 -
    The invention relates to a machine tool having a primary coil for contactless energy and / or signal transmission, having a tool holder having a spindle head for a tool having a coil coupled to the primary coil of the machine tool secondary coil, and having means for shifting the primary coil from a decoupled rest position in a coupling position with the secondary coil of the recorded tool.
    To supply tools contactlessly with electrical energy, it is known from the prior art (DE4330820A1, DE102007024503B3), in addition to the tool holder of a spindle head to provide a primary coil which is inductively coupled to a secondary coil of the tool clamped in the tool holder tool. DE102007024503B3 further shows to shift the primary coil of the tool holder from a decoupled rest position into a coupling position with the secondary coil of the tool. For this purpose, a device with a lever system is attached to the spindle head, which can move over lever arms, the primary coil to the secondary coil. Disadvantageous is such an attachment to the spindle head whose compact design, especially when the spindle head comparatively heavy primary coils due to high power transmission are required. In addition, it can come to shakings on the tool or during a movement of the spindle head, for example, so as to be able to assume a different processing position relative to the workpieces, disadvantageous displacements of co-moving primary coil. This can not only affect or disturb the energy and / or signal transmission between primary and secondary coil, also damage caused by contact between the two coils are not mutually exclusive. 2/20 -2-
    The invention is therefore based on the object, starting from the input described prior art to provide a machine tool that can ensure a safe and stable contactless energy and / or signal transmission, even if doing the spindle head is moved.
    The invention solves the problem set by the fact that the means for moving the primary coil both at least one stop fixed to the spindle head and at least one associated with primary coil and mitbewegten counter-stop, which is fixed to the stop at the spindle head stationary storage of the primary coil located in the coupling position interacts positively.
    Does the means for the displacement of the primary coil both at least one head fixed to the spindle fixed stop and at least one associated with primary coil and mitbewegten counter-stop, thus opening up the possibility to position the primary coil in their coupling position exactly or fix. For this purpose, namely the counter-stop with the stop acts on the spindle head stationary storage of the primary coil located in the coupling position together form fit. On the basis of this reliable stop fixing the primary coil, which stop fixation results from the positive connection between at least one stop surface of the stop and at least one mating surface of the counter-attack, even significant vibrations can be intercepted on the tool. A stable and especially safe contactless transmission of energy and / or signals can thus be ensured. In addition, so that the primary coil follow a movement of the spindle head exactly, which may be advantageous for a multi-axis tool guide on the machine tool. In addition, you can reliably prevent contact of the two coils by this stop fixing, with a movement of the primary coil is locked in at least two axes. Damage to the coupled coils is thus avoidable. The machine tool according to the invention can ensure high stability despite contactless energy and / or signal transmission.
    In general, it is mentioned that the primary or secondary coil can be assigned to a primary part (stator) or secondary part (rotor). Primary or secondary part, which are preferably inductively coupled via the coils, may also each have a coil housing to protect their coils. Furthermore, it is generally mentioned that the stop and counter stop can have any two-dimensional surface in order to ensure a fixed bearing of the primary coil when interacting. Conceivable is a combination of spherical surface and inner surface of a pan or flat, conical or cylindrical surfaces and the like.
    Constructive simplicity with respect to the formation of the attack together with its counter-attack can be achieved if the stop has at least two mutually inclined stop surfaces, which cooperate with mating surfaces of the counter-attack. In addition, such cooperating centering surfaces can ensure a positioning error-tolerant guidance of the primary coil in its coupling position, which can increase stability and machining accuracy of the machine tool.
    These structural requirements can be further simplified if the abutment surfaces are provided on the wedge legs of the stop.
    The stop has on each wedge leg on a particular v-shaped recess with two stop surfaces. Thus, the counter-attack can be performed by the comparatively high accuracy of fit in the direction of the stop with comparatively tight tolerances. 4/20 -4 -
    The above can be further improved if the cross-sectional area of the stop in its contour at least partially corresponds to that of a double prism.
    Simplified installation conditions may result if the stopper is attached to the face of the spindle head.
    In order to align the stop and thus the primary coil particularly accurately to the clamped tool or to its secondary coil, an interchangeable intermediate plate is provided between the stop and spindle head. This interchangeable intermediate plate can also be used to adjust or adjust the air gap between the primary and secondary coil.
    The primary coil can be displaced from the rest position into a coupling position in a structurally simple manner if the device for displacing the primary coil has a guide. In particular, a linear guide can prove itself. For weight reduction of the spindle head can be further provided that this guide is attached separately from the spindle head on the machine tool. For an exact positioning of the primary coil, it may indeed be sufficient if only the stop is provided on the spindle head. Thus, among other things, use and use of a comparatively lightweight and compact spindle head are made possible.
    If the machine tool has a slide, it can prove to be expedient if the spindle head and the guide are fastened together on a carriage of the machine tool. For example, this can be used to reduce restrictions on the working range of the machine tool which can result from the device for shifting the primary coil.
    In particular, the solution according to the invention may be distinguished by a stop and cooperating counterstop in a machine tool, in which the spindle head is pivotably mounted in order to ensure an accurate multi-axis guidance of the tool.
    Simply solved structurally, the counter-stop can be pivotably mounted on the machine tool via a pivoting arm which can be moved with the spindle head. Thus, the swivel arm can open sufficient mounting space for guide elements for guiding the moving with the primary coil counter-attack.
    Simplified guiding conditions for carrying the primary spool with the tool can result if spindle head and swivel arm are rotatably mounted about a common pivot axis. Such a guide variant can also be realized comparatively simple design, which in turn can be created a cost-effective machine tool.
    The swivel arm can be used to protect the primary coil, if this has a protective housing in which the primary coil is movably supported by its hidden by the protective housing rest position in their protective housing projecting coupling layer. This can be particularly advantageous in chip-removing tools in order to protect the primary coil from chips from the workpiece.
    A cleaning of the stopper on the spindle head can be made possible in a simple manner if at least one cleaning nozzle is provided on the machine tool. Thus, among other things, contaminants can be detached from the stop in order to maintain or achieve the desired stop fixing of the primary coil.
    The cleaning of the stopper can be particularly easily and effectively carried out when the spindle head is designed for movement in a cleaning nozzle aligned with respect to the cleaning position. In addition, this can facilitate the alignment of the cleaning nozzle and a manual or automatic checking the area around the primary coil and secondary coil on chip freedom. 6/20 -6-
    In the figures, for example, the subject invention is illustrated in more detail with reference to a variant embodiment. Show it
    1 is a torn-open front view of a partially illustrated machine tool with decoupled primary and secondary coil and without clamped tool,
    2 shows a sectional view according to II-II of Figure 1 with coupled primary and secondary coil,
    Fig. 3 is a partially torn-off side view of the machine tool shown in FIG. 1 and
    Fig. 4 is an enlarged partial view of the spindle head.
    In conjunction with FIGS. 1 and 3, a machine tool 1 is shown by way of example, the spindle head 2 of which has a tool holder 4 which is rotationally driven by a work spindle 3. For this purpose, the work spindle 3 is connected to a motor 5 of the spindle head 2. In the tool holder 4, a tool 6 is clamped, via a schematically illustrated pull rod 7 of a hintingly shown clamping mechanism, which pull rod 7 engages from the machine side into the tool shaft 8 and the work spindle 3 coupled to the tool 6. The machine tool 1 also has a primary coil 9 for contactless energy and / or signal transmission. This functionality is utilized by the tool 6, in that it is assigned a secondary coil 10 which can be coupled to the primary coil 9 of the machine tool 1. This secondary coil 10 surrounds the tool shaft 8 of the tool annular. The primary coil 9 has over the secondary coil 10 has a segmental shape, as can be seen in FIG. 1. Both coils 9 and 10 are thus inductively coupled and allow wireless transmission. This transfer can be used for the electrical supply of consumers on the tool 6. In addition, a transmission of electrical signals for controlling the tool 6 and / or for measuring data acquisition is conceivable. In order to bring the primary coil 9 from a rest position 11 shown in FIG. 1 into a coupling layer 12 shown in FIG. 3, the machine tool 1 has a device 13 for displacing the primary coil 9.
    In order to stabilize the primary coil 9 in this coupling layer 12 mechanically particularly well, it is proposed according to the invention that the device 13 for displacing the primary coil 9 has a stop 14 and a counter-stop 15. In general, it is mentioned that, of course, a housing of a primary coil can form a corresponding stop.
    The stationary attached to the spindle head 2 stop 14 and connected to the primary coil 9 and mitbewegte counter-attack 15 advantageously cooperate positively and form a stop-limited seat 18 from. In this coupling position, the primary coil 9 is fixedly mounted fixed, which bearing 36 can be seen in particular in FIG. Thus, this leads to an accurate fixation of the primary coil 9 in its position on the spindle head 2 - also this ensures a very vibration-free and firm connection between the primary coil 9 and spindle head 2. For the form-fitting 14 two mutually inclined stop surfaces 16 are provided on the stop 14, which form a sliding guide with the counter-stop 15 provided on the counter-surfaces 17, which slide in the stop-limited seat 18 and ends in a stop fixation. The stop surfaces 16 are, as can be seen in Fig. 1, wedge-shaped diverging, whereby a particularly robust centering on the stop-limited seat 18 between the stop 14 and counter-stop 15 is ensured. Fig. 2 shows, inter alia, the stop 14 in cross section to ll-ll, while the stop is shown from above. It can be seen that the cross-sectional area of the primary coil 9 partially corresponds to that of a double prism 19. However, their wedge legs 37 converge in contrast to a double prism -see also Fig. 4- to give the stopper 14 a wedge shape. Thus, the connection between stop 14 and counter-stop 15 is statically defined exactly, which only allows one degree of freedom to and from the coupling layer 12. 8/20 -8-
    In order to bring the primary coil 9 close to the secondary coil 10 and thus to keep the air gap 20 between the coils 8, 9 for the lowest possible losses / impairments in the transmission no, the stop 14 on the end face 21 of the spindle head 2 attached - and that on the spindle head housing 22 of the spindle head 2, which ensures a high local strength.
    Between the stop 14 and the spindle head 2, a replaceable intermediate plate 35 is also provided, which can be better recognized according to FIG. This intermediate plate 35 is used for fine adjustment or adjustment of the coupling layer 12 of the primary coil 9 use.
    According to FIGS. 1 and 3, it can be seen that the device for displacing the primary coil 9 has a guide 23 which is fastened to the machine tool 1 separately from the spindle head 2. Spindle head 2 and guide 23 are mounted together on the carriage 24 of the machine tool 1, which carriage 24 is guided on a machine bed, not shown. This linear guide 23 is formed by a cylinder 25, the movable piston rod 26, the assembly of counter-stop 15 and primary coil 9 can move along an axial movement axis 27, namely from a rest position 11 in a coupling layer 12 and vice versa.
    In general, it is mentioned that this guide 23 is also used, the counter-stop 15 can always press against the stop when the primary coil 9 is coupled to the secondary coil 10, so as to further improve the positional fixation of the primary coil 9.
    The counter-stop 15 is also pivotally mounted on a movable with the spindle head 2 pivot arm 29 on the machine tool 2, wherein the spindle head 2 and pivot arm 29 are rotatably mounted about the common pivot axis 28. In this way, when the spindle head 2 is swiveled, the swivel 9/20 -9 arm 29 can be passively carried along in a structurally simple manner. Constructively solved further advantageous, the axial movement axis 27 is parallel to the pivot axis 28th
    As can further be seen in FIG. 3, the spindle head 2 is mounted pivotably on the machine tool 1 or on the carriage 24, namely about a pivot axis 28 or axis of rotation.
    The pivot arm 20 has a protective housing 30 in order to protect the primary coil 9 in its rest position 11. For this purpose, the cylinder 25 of the guide 23 is disposed within the protective housing 30, via the primary coil 9 of its hidden by the protective housing 30 rest position 11, as shown in FIG. 1, in their protective housing 30 projecting coupling layer 12, as shown in FIG recognize, is movably mounted.
    Impurities on or between the primary coil 9 and the secondary coil 10 can be removed via two cleaning nozzles 31. The cleaning nozzles 31 are attached to the carriage 24. By the spindle head 2 is pivoted into a cleaning position shown in phantom in Fig. 1 32, the cleaning nozzles 31 are particularly effective - it being conceivable that in this cleaning position 32 of the spindle head 2, the primary coil 9 is displaced into its coupling layer 12. Thus, for example, the inductively coupled part of the primary side 33 and the secondary side 34 can be kept free of non-illustrated chips for contactless energy and / or signal transmission.
    4, the wedge-shaped stop 14 is shown enlarged from a view from above, ie from the direction of the primary coil 9. In particular, the two wedge legs 37 can be seen, each associated with two stop surfaces 16, 116. These two stop surfaces 16, 116 are each formed by one of the two V-shaped recesses 38 in the wedge legs 37. 10/20
    权利要求:
    Claims (15)
    [1]
    1 - A machine tool having a primary coil (9) for contactless energy and / or signal transmission, with a tool holder (4) having a spindle head (2) for a tool (6) having one with the primary coil (9) a device (13) for shifting the primary coil (9) from a decoupled rest position (11) into a coupling position (12) with the secondary coil (10) of the received tool (6 ), characterized in that the device (13) for displacing the primary coil (9) has at least one stop (14) fixedly attached to the spindle head (2) and at least one counter-stop (15) connected to and moving along with the primary coil (9), with the stop (14) to the spindle head (2) stationary mounting (36) of the coupling position (12) located primary coil (9) cooperates positively.
    [2]
    2. Machine tool according to claim 1, characterized in that the stop (14) has at least two mutually inclined stop surfaces (16 or 116) which cooperate with mating surfaces (17 and 117) of the counter-stop (15).
    [3]
    3. Machine tool according to claim 2, characterized in that the stop surfaces (16 or 116) on the wedge legs (37) of the stop (14) are provided.
    [4]
    4. Machine tool according to claim 3, characterized in that the stop (14) on each wedge arm (37) has a recess (38) with two stop surfaces (16, 116). 11/20 -2-
    [5]
    5. Machine tool according to claim 4, characterized in that the cross-sectional area of the stop (14) in its contour at least partially corresponds to that of a double prism.
    [6]
    6. Machine tool according to one of claims 1 to 5, characterized in that the stop (14) on the end face (21) of the spindle head (2) is fixed.
    [7]
    7. Machine tool according to one of claims 1 to 6, characterized in that between stop (14) and spindle head (2) an exchangeable intermediate plate (35) is provided.
    [8]
    8. Machine tool according to one of claims 1 to 7, characterized in that the means (13) for displacing the primary coil (9) comprises a guide (23), in particular linear guide, which is separate from the spindle head (2) on the machine tool (1 ) is attached.
    [9]
    9. Machine tool according to claim 8, characterized in that the spindle head (2) and the guide (23) on a carriage (24) of the machine tool (1) are fastened together.
    [10]
    10. Machine tool according to one of claims 1 to 9, characterized in that the spindle head (2) is pivotally mounted.
    [11]
    11. Machine tool according to claim 10, characterized in that the counter-stop (15) via a with the spindle head (2) mitbewegbaren pivot arm (29) on the machine tool (1) is pivotally mounted.
    [12]
    12. Machine tool according to claim 11, characterized in that the spindle head (2) and the pivot arm (29) about a common pivot axis (28) are rotatably mounted. 12/20 -3-
    [13]
    13. Machine tool according to one of claims 1 to 12, that the pivot arm (29) has a protective housing (30), in which the primary coil (9) of its from the protective housing (30) hidden rest position (11) in their the protective housing (30). projecting coupling layer (12) is movably mounted.
    [14]
    14. Machine tool according to one of claims 1 to 13, that at least one cleaning nozzle (31) for cleaning the stopper (14) is provided on the machine tool (1).
    [15]
    15. Machine tool according to claim 14, characterized in that the spindle head (2) is designed for movement in a cleaning nozzle (32) aligned with respect to the cleaning nozzle. 13/20
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    同族专利:
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    AT513629B1|2014-06-15|
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    引用文献:
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    WO2001015285A1|1999-08-23|2001-03-01|Mass Engineered Design|Universal quick connector apparatus for an lcd monitor|
    DE10013612A1|2000-03-18|2001-09-20|Gfe Ges Fuer Fertigungstechnik|Unit supplying current and transmitting data to and from rotating machine tools has stator swung radially in and out to make contact with rotor|
    WO2005067360A1|2004-01-12|2005-07-21|Jerry Moscovitch|Apparatus and method for adding a monitor to a display system|
    DE102007024503B3|2007-05-25|2008-08-21|MAPAL Fabrik für Präzisionswerkzeuge Dr. Kress KG|Transmission device for inductive transmission of data and/or energy, has stator with transfer area turned towards transfer direction of rotor in assembled condition, and cover arranged for protection from turnings of area of stator|EP3028804A1|2014-12-04|2016-06-08|SMW-AUTOBLOK Spannsysteme GmbH|Transmission device, in particular for energy and/or signal transmission|JPH01264748A|1988-04-15|1989-10-23|Koyo Seiko Co Ltd|Tool adapter with built-in speed increase mechanism|
    DE4330820A1|1993-09-13|1995-03-16|Komet Stahlhalter Werkzeug|Tool head with external power supply|
    JPH08174358A|1994-12-26|1996-07-09|Fanuc Ltd|Submotor unit mounting device for machine tool|
    DE19916710B4|1999-04-14|2005-08-04|Lang, Günter|Tool drive device, in particular for machine tools|
    JP4689499B2|2006-03-02|2011-05-25|敏 佐藤|Dot marking device|DE102015218030A1|2015-09-18|2017-03-23|Sauer Gmbh|Coupling system for use on a spindle device of a machine tool|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT504992013A|AT513629B1|2013-08-12|2013-08-12|Machine tool with a primary coil for contactless energy and / or signal transmission|AT504992013A| AT513629B1|2013-08-12|2013-08-12|Machine tool with a primary coil for contactless energy and / or signal transmission|
    EP14179353.9A| EP2837463A1|2013-08-12|2014-07-31|Machine tool with a primary coil for the contactless transmission of energy and/or signals|
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