• 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:
    A clamping device for a honeycomb workpiece (1) is described which has a table (8) which can be pressurized with negative pressure and a workpiece (1) which can be placed on the table (8) in the region of a through the end faces of the honeycomb (2) , already profiled surface (3) receiving clamping plate (10), the negative mold of the profiled surface (3) of the workpiece (1) corresponding receiving surface (11) is provided with suction openings to the table (8). In order to provide advantageous clamping conditions, it is proposed that the clamping plate (10) has an open-cell structure.
    公开号:AT515289A4
    申请号:T50310/2014
    申请日:2014-04-29
    公开日:2015-08-15
    发明作者:
    申请人:Gfm Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a clamping device for a workpiece with honeycomb structure, comprising a pressurizable with suppressing table and placed on the table, the workpiece in the region of a determined by the end faces of the honeycomb, already profiled surface receiving clamping plate, whose negative shape of the profiled surface the workpiece corresponding receiving surface is provided with mammalian openings to the table.
    Lightweight components, such as those used in aircraft, have a core with a honeycomb structure, which is joined with cover layers to form a composite body. Since the core is the shaping element, the two surfaces defined by the end faces of the honeycombs are to be machined by means of cutting or milling tools. Machining of such honeycomb-type workpieces is not difficult as long as the workpiece has a flat surface on one side, because in this case after masking the honeycomb openings on the side of the flat surface with an air-impermeable film, the workpiece is subjected to under pressure, air-permeable table can be held in accordance with the processing, over the entire clamping surface. After profiling the one surface, however, the workpiece is to be turned for machining the opposite surface, so that the workpiece must be stretched over the already profiled surface. For this purpose, a clamping plate is used, which forms a negative mold of the profiled workpiece surface corresponding receptacle for the workpiece, which thus satisfies after closing the honeycomb openings with a film fed to the receiving surface of the clamping plate. With the help of provided in the clamping plate mammal openings, therefore, the workpiece can be sucked through its already machined surface through the clamping plate to the table. However, because of the limited number of mammalian openings, the clamping effect is significantly reduced as compared with direct suction of the workpiece to the table, even if the receiving surface of the clamping plate is provided with distribution grooves connected to the mammalian openings. In addition, the machining of the usually made of a light metal clamping plates is expensive.
    The invention is thus based on the object, a clamping device for a work to be processed on both honeycomb sides workpiece honeycomb structure so that can be ensured for the already processed on a honeycomb side workpiece with a comparatively low clamping conditions, the immediate clamping of the workpiece on a to suit the vacuumed table.
    The invention achieves the stated object in that the clamping plate has an open-line structure.
    The open-line structure of the clamping plate allows a uniform over the entire receiving surface Saugdurchgriff through the clamping plate, because the open-cell structure of the clamping plate allows a uniform aspiration of the entire receiving surface in the yes open structural cells open. This means that a workpiece with honeycomb structure, which is placed with its covered by an airtight film, already profiled surface on the same shape receiving surface of the clamping plate is held on the open-line structure of the clamping plate in a way that quite with the immediate intake of the still unmachined workpiece to the table can be compared. With the uniform clamping of the workpiece over the entire receiving surface of the clamping plate, the machining of the workpiece, in particular in thin, a lower inherent strength having edge regions is facilitated because the workpiece is effectively sucked in the region of these thin wall portions of the receiving surface.
    Particularly advantageous construction conditions arise when the open-line structure of the clamping plate is achieved by a honeycomb structure, because in this case the honeycomb, which determine the receiving surface with their end faces in the intake parallel aligned, formed by the honeycomb walls separate flow channels, which not only comparatively large Have flow cross-sections, but also provide a correspondingly low flow resistance.
    The centering of the workpiece relative to the clamping plate requires appropriate measures due to the honeycomb structure of the clamping plate. An advantageous centering of the workpiece relative to the receiving surface of the clamping plate can be achieved in an advantageous manner in that the clamping plate forms a reentrant, cooperating with a counter-stop of the workpiece centering stop following the receiving surface for the workpiece. The counter-abutment of the workpiece thus protrudes from the already profiled surface, so that these counterstops support the holding down of the workpiece in the region of the edge regions to be machined, especially since these counterstops must be separated only after the machining of the second surface of the workpiece.
    The open-line structure of the clamping plate also opens up the possibility of being able to produce the receiving surface of the clamping plate with the devices provided for the machining of the workpiece. For this purpose, yes only needs to be machined according to the workpiece processing to the table clamping plate for producing the negative mold of the profiled surface of the workpiece corresponding receiving surface to be provided for profiling the surface of the workpiece device, possibly with separate tools, if due to Negative form the tools used for the processing of the positive mold are unsuitable. This applies because of the structure-dependent processing conditions, especially for chipboard with a honeycomb structure. Since the receiving surface of the clamping plate corresponds to the negative shape of the male workpiece, resulting for the control of the for
    Programming the profiled workpiece surface programmed machine tools programmatically only minor changes to edit the receiving surface for the clamping plate.
    In the drawing, the subject invention is shown, for example. Show it
    1 shows a clamping device for a workpiece with honeycomb structure in a schematic cross section through the workpiece sucked to the table,
    2 shows the clamping plate clamped on the table for processing the receiving surface in a schematic cross-section,
    Fig. 3, over the clamping plate relative to the table processing-oriented workpiece in a representation according to FIGS. 1 and 2 and Fig. 4 shows a section through the finished workpiece.
    The machined workpiece 1 with a honeycomb structure, for example, the core of a wing profile, according to the Fig. 4 on two opposite, each determined by the end faces of the honeycomb 2, profiled surfaces 3 and 4, on a longitudinal side of the workpiece 1 in a thin Run out of edge 5.
    1 of a honeycomb panel with parallel surfaces is used, which is taped on one side with an airtight film 6, with this sealed side mounted on a connected to a suction box 7, air-permeable table 8 aligned to become. Due to the negative pressure of the table 8 via the suction box 7 thus the workpiece 1 is processed down to the table 8 processed. One of the two surfaces 3, 4 can thus be processed by means of a multi-axis processing device, which is equipped, for example, with knives or milling tools. In Fig. 1, the surface to be machined 3 is shown by dash-dotted lines. The over the surface to be machined 3 protruding edge regions of the workpiece 1 serve as counter-stops 9 for the centering of the workpiece 1 relative to a clamping plate 10, on which the workpiece 1 is held for the processing of the second surface 4.
    This clamping plate 10, which must be formed open-line and is preferably also made of a honeycomb plate, is to be provided with a receiving surface 11 which corresponds to the negative mold of the already profiled surface 3 of the workpiece 1. The preparation of this receiving surface 11 is preferably carried out with the processing device with which the profiled surface 3 of the workpiece 1 has been processed. However, because of the complementary in terms of the profiled surface 3 shape of the receiving surface 11, it may be necessary to use separate cutting and milling tools. The clamping plate 10 is sucked in accordance with their processing in an analogous manner by masking a plate side with an air-impermeable film 6 to the table 8. The negative surface of the surface 3 corresponding receiving surface 11 can thus be prepared in a simple manner, wherein the clamping plate 10 is provided with recessed centering stops 12 which cooperate with the counter-attacks 9 of the unilaterally machined workpiece 1.
    In Fig. 3, the clamping of the workpiece 1 for processing the second surface 4 is illustrated. The workpiece 1 is placed with the covered by an airtight film 6, already profiled surface 3 on the receiving surface 11 of the aligned on the table 8 patch plate 10, wherein the centering 12 align the workpiece 1 over its counterstops 9 exactly opposite the clamping plate 10. Since there is a substantial penetration of the negative pressure from the suction box 7 on the workpiece 1 via the honeycomb structure of the clamping plate 10, the workpiece 1 is held sucked in a manner analogous to the immediate clamping of FIG. 1 on the clamping plate 10, so that the surface 4 processed can be.
    As can be seen from Fig. 3, the processing is carried out so that the protruding counter-stops 9 are separated only after the complete processing of the surface 4, so that for the machining of the workpiece 1 in the outgoing region of the edge 5, the protruding counter-stops 9 for a ensure secure mounting of the workpiece 1 in this edge region.
    权利要求:
    Claims (4)
    [1]
    Patent Attorneys Dipl.-Ing. Helmut Hübscher Dipl.-Ing. 1. A clamping device for a workpiece (1) with a honeycomb structure, comprising a table (8) which can be subjected to pressing and a workpiece (1) which can be placed on the table (8) Area of a through the end faces of the honeycomb (2) certain, already profiled surface (3) receiving clamping plate (10), the negative mold of the profiled surface (3) of the workpiece (1) corresponding receiving surface (11) with mammalian openings to the table (8) is provided, characterized in that the clamping plate (10) has an open-line structure.
    [2]
    2. Clamping device according to claim 1, characterized in that the clamping plate (10) has a honeycomb structure.
    [3]
    3. Clamping device according to claim 1 or 2, characterized in that the clamping plate (10) following the receiving surface (11) for the workpiece (1) a re-entrant, with a counter-stop (9) of the workpiece (1) cooperating centering stop (12 ).
    [4]
    4. A method for producing a clamping plate (10) according to any one of claims 1 to 3, characterized in that according to the workpiece (1) processing adapted to the table (8) sucked clamping plate (10) for producing the negative mold of the profiled surface ( 3) of the workpiece (1) corresponding receiving surface (11) with a for profiling the surface (3) of the workpiece (1) provided device is optionally processed using separate tools. Linz, on April 29, 2014 GFM - GmbH by: / DI Helmut Hübscher / (electronically signed)
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE4130623A1|1990-06-02|1993-03-18|Eurocopter Deutschland|Process to mfr. sandwich panel with honeycomb core and convex surfaces - has sheet of thermoplastics on one side of core which is heated and drawn into cells by pneumatic pressure or suction|
    DE102009045536A1|2009-10-09|2011-04-14|Wissner, Rolf, Dipl.-Ing.|Method for machining reducible operation of work-pieces, involves arranging sheet of web material between flat lower side of work piece and vacuum clamping plate with air throttle function|
    DE102011100702A1|2011-05-05|2012-11-08|Premium Aerotec Gmbh|Method for processing honeycomb structure for manufacturing composite component i.e. sandwich structure, involves processing honeycomb structure and honeycomb structure surfaces turned away from support surface in material removal manner|DE102017115869A1|2017-07-14|2019-01-17|Homag Gmbh|Clamping device with excavating function|GB601485A|1945-10-03|1948-05-06|Midland Metal Spinning Company|Improvements in or relating to suction-operated chucks|
    GB1099566A|1965-04-06|1968-01-17|Dunham Tool Company Inc|Universal rotary chuck|
    US4066249A|1977-05-11|1978-01-03|Grumman Aerospace Corporation|Modular vacuum work area|
    JPH0386488A|1989-08-29|1991-04-11|Jamco Corp|Suction device|
    FR2784926B3|1998-10-21|2000-09-22|Ederena Concept Sarl|SELF-CONTAINING AIR DRAINAGE TABLE IN SANDWICH STRUCTURE OF HONEYCOMB AND PERFORATED SHEET|
    US6217013B1|1999-06-29|2001-04-17|The Boeing Company|Workpiece holder assembly for vacuum-holding a workpiece for machining|
    US20080281011A1|2007-05-10|2008-11-13|William Strauss|High temperature resistant, structural polymer foam|
    WO2011064349A1|2009-11-27|2011-06-03|Micado Cad-Solutions Gmbh|Modular retaining device|
    US8992709B2|2009-12-04|2015-03-31|The Boeing Company|Sandwich structure having arrestment feature and method of making the same|
    DE202013100632U1|2013-02-13|2013-03-04|Horst Witte Gerätebau Barskamp KG|Vacuum chuck|DE102016203578A1|2016-03-04|2017-09-07|Homag Gmbh|Device with suction device|
    CN112872370A|2020-05-09|2021-06-01|王天云|Double-tool-rest numerically controlled lathe and using method thereof|
    CN112223156A|2020-10-13|2021-01-15|江门市盈光不锈钢制品有限公司|Stainless steel dish lid class part finish machining anchor clamps|
    法律状态:
    2019-12-15| MM01| Lapse because of not paying annual fees|Effective date: 20190429 |
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50310/2014A|AT515289B1|2014-04-29|2014-04-29|Clamping device for a workpiece with honeycomb structure|ATA50310/2014A| AT515289B1|2014-04-29|2014-04-29|Clamping device for a workpiece with honeycomb structure|
    EP15161671.1A| EP2942154A1|2014-04-29|2015-03-30|Clamping device for a work piece with honeycomb structure|
    US14/695,259| US9956622B2|2014-04-29|2015-04-24|Chucking apparatus for a workpiece with honeycomb structure|
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