• 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 chuck for clamping a thin-walled workpiece (2), with a chuck body (3), a chuck body (3) associated workpiece support (6) and at least two chuck body (3) mounted relative to the workpiece support (6) adjustable clamping jaws (5). The chuck body (3) is adjustable between a first rotational position serving for machining the upper side (7) of the workpiece (2) and a second rotational position serving for machining the underside of the workpiece (2). The workpiece support (6) has an opening for access to the underside of the workpiece (2). A workpiece support (10) is provided which is adjustable between a first position of support of the lower side of the workpiece (2) in the first rotational position and a second position of support of the upper side (7) of the workpiece (2) in the second rotational position is, wherein on the axis of the workpiece support (10) at least one pinion (23) is arranged to realize a rotary coupling with an associated, in the chuck body (3) in a cylinder chamber (20) and in the cylinder chamber (20) adjustable by pressure medium, a tooth row (21) having adjusting piston (22).
    公开号:CH709371B1
    申请号:CH00771/14
    申请日:2014-05-21
    公开日:2018-03-29
    发明作者:Bayr Tobias
    申请人:Roehm Gmbh；
    IPC主号:
    专利说明:

    Description: The invention relates to a chuck for clamping a thin-walled workpiece, having a chuck body, a chuck body associated workpiece support and at least two chuck body mounted, adjustable relative to the workpiece support jaws.
    Such chucks are known in practice, which are offered by the applicant under the name KPF-MT as a power-operated surface chuck for clamping and subsequent processing thin-walled workpieces, namely boards. Normally, it is necessary to machine the boards from both sides, which requires turning the workpiece over. For this purpose, fitting holes are made in the boards, into which pins are threaded, which have a slight oversize, in order to ensure sufficient precision. A loading by means of grippers is thus excluded and an automation is not possible. Another particular disadvantage is to be considered that the accuracy is lost during processing.
    The invention is therefore based on the object, a chuck of the type mentioned in such a way that a complete machining is made possible on both sides in thin-walled workpieces with a clamping.
    This object is achieved according to the invention in a chuck of the type mentioned above in that the chuck body is adjustable between a first of the processing of the top of the workpiece serving rotational position and a second processing of the underside of the workpiece serving rotational position that the workpiece support an opening for accessing the underside of the workpiece, wherein a workpiece support is provided, which is adjustable between a first of the support of the underside of the workpiece in the first rotational position serving position and a second of the support of the top of the workpiece in the second rotational position serving position in that at least one pinion is arranged on the axis of the workpiece support for realizing a rotary coupling with an associated adjusting piston arranged in the chuck body in a cylinder chamber and adjustable in the cylinder chamber by means of pressure medium, having a row of teeth.
    By the invention it is ensured that both sides of the workpiece are not only accessible, but also accessible to the tool, since it is possible by the rotation of the chuck body from the chuck, one after the other and the other surface of the workpiece against the tool to judge. So it is possible to edit both sides of the workpiece in one clamping, so that accuracy losses are avoided by the no longer necessary re-tightening. In addition, the great advantage is thus associated that bending of the thin-walled workpiece is avoided during machining, since the force exerted by the tool on the workpiece has no influence on the deformation of the workpiece, but is introduced into the workpiece support. The chuck is positioned perpendicular to the machine spindle to maintain alignment of the workpiece with the prior art chuck.
    With regard to the simplicity of construction and the small footprint, it is advantageous if the chuck is rotatable by rotation about a longitudinal axis between the first rotational position and the second rotational position, and if the axis for adjusting the workpiece support perpendicular to the longitudinal axis of the chuck body and oriented parallel to the plane defined by the workpiece support. The chuck body and the workpiece support are thus rotated about the mutually perpendicular axes.
    In the context of the invention it is further provided that the workpiece support has two compensation elements for plane-parallel support of the workpiece. This ensures that the workpiece support always rests flat against the workpiece and even regardless of the workpiece thickness.
    As low it has also been found, if the workpiece support is designed crescent-shaped with a protruding axle, to which the compensating elements are floating in recordings adjacent. The system of workpieces on the compensation elements is further improved when connectable to a vacuum source lines are guided by the workpiece support and the compensation elements to mouths on the workpiece facing side.
    It is further preferred that the support elements have through the opening of the workpiece support matching contact surfaces, and that are formed on the clamping jaws and the workpiece support counter bearing, matching the bearings of the compensation elements. By this design it is ensured that the tension of the workpieces is not affected by the workpiece support and the basic position of the workpiece support is defined by the clamping jaws or workpiece support.
    Through the realization of this rotary coupling a very space-saving and engergieeffiziente adjustment of the workpiece support is possible. In this context, it is also advantageous if the adjusting piston shock absorbers are assigned to the soft approach to the end positions.
    In the context of the invention, it is further preferred if two U-shaped support are arranged on the chuck body, in each of whose base legs a cylinder chamber with the respective associated control piston and between the free ends of the clamping jaws are arranged. By the chuck body associated with the U-shaped support space is provided in the base leg to position the cylinder chambers with the actuating piston, while the free legs of the U-shaped support for the arrangement of the jaws serve. The clamping jaws are designed as adjustable perpendicular to the workpiece support surface clamping fingers.
    In the following the invention is explained in more detail in an embodiment shown in the drawing; show it:
    1 is a perspective view of the inventive chuck in the first rotational position,
    FIG. 2 shows a representation corresponding to FIG. 1 with the workpiece support in the second position, FIG.
    3 shows a front view of the chuck according to the invention in the configuration shown in FIG. 2, FIG.
    4 is a representation corresponding to FIG. 3 in a configuration corresponding to FIG. 1, FIG.
    5 shows the section V-V of FIG. 3,
    6 shows the section Vl-Vl of Fig. 4,
    7 shows the section VII-VII of Fig. 3,
    8 shows the section Vili-Vili of Fig. 4,
    9 is a representation corresponding to FIG. 3, FIG.
    Fig. 10 shows the section X-X of Fig. 9, and
    11 shows the section XI-XI of Fig. 9th
    In the drawing, a chuck 1 is shown in Fig. 1, which serves for clamping thin-walled workpieces 2, namely in the embodiment shown in the drawing for clamping thin-walled boards. The chuck 1 has a chuck body 3, on which two U-shaped support 4 are arranged, between the free ends of clamping jaws 5 are arranged, which serve for clamping the workpiece 2. The chuck body 3, namely in the embodiment shown in the drawing between the free ends of the U-shaped support 4, a workpiece support 6 is assigned. The clamping jaws 5 are designed as adjustable perpendicular to the plane of the workpiece support 6 clamping fingers.
    The chuck body 3 is adjustable between a first of the processing of the top 7 of the workpiece 2 serving rotational position and a second of the processing of the bottom 8 of the workpiece serving rotational position. So that the workpiece 2 can be reached in both rotational positions for the tool, the workpiece support 6 has an opening 9 as access to the workpiece support 6 facing side of the workpiece 2.
    The chuck body 3 is associated with a workpiece support 10, which serves between a first of the support of the bottom 8 of the workpiece 2 in the first rotational position serving position (Fig. 1) and a second of the support of the top 7 of the workpiece 2 in the second rotational position Serving position is adjustable.
    The chuck body 3 is rotatable by a rotation about its longitudinal axis between the first rotational position and the second rotational position. The adjustment of the workpiece support 10 takes place about an axis which is oriented perpendicular to the longitudinal axis of the chuck body 3 and parallel to the plane defined by the workpiece support 6 level. 1 and 2, the adjustment of the workpiece support can be seen for workpiece machining must be rotated in Fig. 2, the chuck body still in the second rotational position. With reference to FIGS. 7 and 8, it is explained that in the basic legs 19 of the U-shaped carrier 4 cylinder chambers 20 are formed. In these cylinder chambers 20 are adjustable by pressure medium, a row of teeth 21 having adjusting piston 22 which cooperate for the realization of a rotary coupling with a pinion 23, which is arranged on the axis of the workpiece support 10. The adjusting piston 22 is assigned a soft damper 24 for the soft approach to the end position.
    Fig. 5 shows a longitudinal section through the chuck 1 with the chuck body 3 in the first rotational position and the workpiece support 10 in the second position. From this Fig. 5 it can be seen that the workpiece support 10 has two compensation elements 11, which are provided in order to achieve a plane-parallel contact of the workpiece support 10 and thus an effective areal support of the workpiece 2. FIG. 5 also shows that the workpiece support 10 is designed in the shape of a crescent with a projecting axle bearing 12 to which the compensating elements 11 in the receptacles 13 are mounted in a pendulum or floating manner.
    Fig. 9 in conjunction with Fig. 10 can further recognize that lines 14 are guided through the workpiece support 10 and the compensation elements 11 to mouths on the workpiece 2 facing side. These lines 14 are connectable to a vacuum source so as to further promote the contact of the workpiece 2 to the compensating elements 11. With these lines 14 can also be controlled and take into account as a parameter in the control whether a workpiece 2 is applied or correctly applied. 5, 6 and 10 it can be seen that the workpiece support 10 have through the opening 9 matching abutment surfaces 16, so as to be able to bridge the thickness of the workpiece support 6 when the workpiece support 6 facing side of the workpiece requires the support.
    At the clamping jaws 5 and the workpiece support 6 counter bearing 17 are formed to avoid too much force on the workpiece 2 by arranged on the compensating elements 11 bearing 18.
    In the following, the voltage and processing of a thin-walled tool piece 2, namely a board is now briefly described. For this purpose, the board is positioned on the workpiece support 6 and tensioned by the clamping jaws 5 designed as clamping fingers. For the subsequent processing of the workpiece 2 so that the clamping is fixed. The workpiece support 10 is adjusted to the first position in which the underside 8 of the workpiece 2 is supported. The support is carried out according to the Fig. 6 by the compensation elements 11, wherein the plane-parallel support is additionally promoted by acting through the lines 14, a negative pressure on the workpiece 2.
    After the machining of the workpiece 2, the chuck body 3 is rotated from the first rotational position to the second rotational position and the workpiece support 10 is moved from the first position to the second position. After the workpiece support 10 has come to rest in the second position to the workpiece 2, the suppression is generated again and so the correct system of the workpiece 2 on the compensation element 11 is controlled and ensured, so that with the previously existing voltage of the workpiece 2 and the second page can be edited.
    [0022] 1 Chuck 2 Workpiece 3 Chuck body 4 U-shaped support 5 Clamping jaws 6 Workpiece support 7 Top 8 Bottom 9 Opening 10 Workpiece support 11 Compensating elements 12 Axle bearing 13 Receiving 14 Conduction 16 Contact surface 17 Counter bearing 18 Bearing 19 Base 20 Cylinder chamber 21 Tooth row 22 Adjusting piston 23 Pinion 24 shock absorbers
    权利要求:
    Claims (9)
    [1]
    claims
    1. Chuck for clamping a thin-walled workpiece (2), with a chuck body (3), a chuck body (3) associated workpiece support (6) and at least two on the chuck body (3) mounted relative to the workpiece support (6) adjustable clamping jaws (5 ), characterized in that the chuck body (3) between a first of the processing of the top (7) of the workpiece (2) serving rotary position and a second of the processing of the bottom (8) of the workpiece (2) serving rotary position is adjustable, that the Workpiece support (6) having an opening (9) as access to the underside (8) of the workpiece (2), that a workpiece support (10) is provided between a first of the support of the underside (8) of the workpiece (2) the first rotational position serving position and a second of the support of the upper side (7) of the workpiece (2) in the second rotational position serving position is adjustable, and that on the axis of the workpiece support (1 0) at least one pinion (23) is arranged for realizing a rotary coupling with an associated, in the chuck body (3) in a cylinder chamber (20) and in the cylinder chamber (20) by pressure medium adjustable, a row of teeth (21) having actuating piston (22 ).
    [2]
    2. Chuck according to claim 1, characterized in that the chuck body (3) by rotation about its longitudinal axis between the first rotational position and the second rotational position is rotatable, and that the axis for adjusting the workpiece support (10) perpendicular to the longitudinal axis of the chuck body (3) and oriented parallel to the plane defined by the workpiece support (6).
    [3]
    3. Chuck according to claim 2, characterized in that the workpiece support (10) has two compensation elements (11) for plane-parallel support of the workpiece (2).
    [4]
    4. Chuck according to claim 3, characterized in that the workpiece support (10) is designed crescent-shaped with a protruding axle bearing (12), to which adjacent the compensating elements (11) are mounted floating in receptacles (13).
    [5]
    5. chuck according to claim 3 or 4, characterized in that connectable to a vacuum source lines are guided by the workpiece support and the compensation elements to orifices on the workpiece facing side.
    [6]
    6. Chuck according to one of claims 3 to 5, characterized in that the workpiece support (10) through the opening (9) has matching abutment surfaces (16), and in that on the clamping jaws (5) and the workpiece support (6) abutment (17 ) are formed for on the compensating elements (11) arranged bearing (18).
    [7]
    7. Chuck according to one of claims 1 to 6, characterized in that the adjusting piston (22) shock absorbers (24) are associated with the soft approach to the end positions.
    [8]
    8. Chuck according to one of claims 1 to 7, characterized in that the chuck body (3) has two U-shaped support (4) are arranged in the base leg (19) each have a cylinder chamber (20) with the respective associated actuating piston (22 ) and between the free ends of the clamping jaws (5) are arranged.
    [9]
    9. Chuck according to one of claims 1 to 8, characterized in that the clamping jaws (5) are designed as perpendicular to the plane of the workpiece support (6) adjustable clamping fingers.
    类似技术:
    公开号 | 公开日 | 专利标题
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    CH709371B1|2018-03-29|Chuck.
    DE2542804B2|1981-01-15|Parting and grooving tool
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    DE3108290C2|1983-01-05|Drilling jig
    DE102014222423A1|2016-05-04|jig
    DE2636986B2|1978-07-13|Lathe
    DE2419976A1|1975-11-13|Shaft bearing for sheet edge - has slotted housing fitting over bedplate on both sides and round slot edges
    DE545966C|1932-03-10|Parallel vice
    DE202010004617U1|2010-07-22|tool holder
    CH710091A1|2016-03-15|Flexible workpiece carrier.
    DE3021823C2|1982-08-05|Bearing part with a mounting hole for a rod or shaft
    EP2686120B1|2017-04-19|Tool-positioning device on a bending press
    DE4341744C2|2001-04-19|Deep drawing clamps for clamping devices on workpiece processing machines
    DE1552502C3|1980-04-17|Arrangement for fastening tool holders to a tool turret
    DE2839320A1|1980-03-20|Three jaw chuck for square workpiece - has two clamping bars with end faces inclined to bar axes and third with Vee-notch
    DE1552370B2|1973-04-12|SUPPORT DEVICE FOR A CIRCULATING WORKPIECE
    DE328254C|1920-10-26|Revolver head for turning benches
    DE324544C|1920-09-01|Multiple steel holder for turret bar u. like
    DE202010002690U1|2011-07-22|tool holder
    EP0427810B1|1993-09-15|Tailstock
    同族专利:
    公开号 | 公开日
    CN104907840A|2015-09-16|
    CN104907840B|2018-08-28|
    JP2015174212A|2015-10-05|
    FR3018467B1|2017-11-24|
    DE202014101146U1|2015-06-16|
    FR3018467A1|2015-09-18|
    CH709371A2|2015-09-15|
    JP6333649B2|2018-05-30|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR2388372B1|1977-04-20|1980-11-28|Thomson Csf|
    DE2902421C2|1979-01-23|1989-08-31|Fa. Wilhelm Blessing, 7302 Ostfildern, De|
    AT4872T|1980-02-08|1983-10-15|Officina Meccanica Zanetti Aristodemo & C. S.A.S.|EDGE GRINDING MACHINE FOR PANEL-SHAPED WORKPIECES, ESPECIALLY GLASS OR STONE PANELS.|
    AT390023B|1987-10-05|1990-03-12|Cerny Anton|METHOD FOR PRODUCING OR ALL-SIDED WORKPIECE WORKPIECES AND MACHINING CENTER FOR IMPLEMENTING THE PROCESS|
    JPH01110069U|1988-01-16|1989-07-25|
    JPH02109615A|1988-10-20|1990-04-23|Honda Motor Co Ltd|Index chuck device|
    JPH03277408A|1990-03-23|1991-12-09|Teikoku Chuck Kk|Chuck for processing thin wall work|
    CN2770837Y|2004-12-24|2006-04-12|上海萨克斯动力总成部件系统有限公司|Film type chuck|
    CN2813166Y|2005-09-05|2006-09-06|曹滨|Three-jaw chuck capable of clamping thin-wall workpieces|
    DE102008004851A1|2008-01-17|2009-07-23|Vollmer Werke Maschinenfabrik Gmbh|Device for machining, in particular eroding and grinding, of cutting pieces provided with cutting edges|
    DE102008013716B4|2008-02-29|2010-08-12|Chiron-Werke Gmbh & Co Kg|Machine tool and method, in particular for turbocharger Verdichterradfräsen|
    DE102008014835A1|2008-03-07|2009-09-10|Chiron-Werke Gmbh & Co Kg|Machine tool, in particular for wheel machining|
    DE102009009494B4|2009-02-18|2011-12-22|P + L Gmbh & Co. Kg|Milling method for automatic processing of a cuboid workpiece and machine tool|
    DE102009035679B4|2009-07-30|2011-04-28|Roland Ponterlitschek|Clamping device and processing device|
    JP5854892B2|2012-03-08|2016-02-09|セイコーインスツル株式会社|Work processing jig, work automatic processing apparatus, work processing method, work processing program, and recording medium|CN105058235B|2015-08-17|2017-04-12|张家港巨盛数控设备科技有限公司|Tracking and positioning device for clamping of workpieces|
    DE102020118569A1|2020-07-14|2022-01-20|Röhm Gmbh|chuck|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE202014101146.3U|DE202014101146U1|2014-03-13|2014-03-13|chuck|
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