• 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 device for the electrochemical machining of a workpiece (3), wherein a potential difference can be built up between a workpiece (3) serving as an anode and at least one electrode of the device serving as a cathode, and a material removal can thereby be brought about via an electrolyte, with at least one first Electrode segment (1) for machining workpiece outer contours (6) and at least one second electrode segment (2) for machining workpiece recesses (7). In order to accelerate and specify the machining of workpieces with bores and surfaces to be machined in the ablation process, both electrode segments (1, 2) can be fed together in a feed direction (11) to the workpiece (3), both the first electrode segment (2) and the the second electrode segment (1) is aligned parallel to the infeed direction (11) and the second electrode segment (2) has a drilling segment (8) and a calibration segment (9), the drilling segment (8) and the calibration segment (9) in the infeed direction (11 ) are arranged one behind the other, as a result of which a hole can be created with the drilling segment and this can then be drilled to the finished size with the calibration segment.
    公开号:CH710045B1
    申请号:CH01091/15
    申请日:2015-07-27
    公开日:2020-07-31
    发明作者:Keller Richard；Thomas Gemlin Walter
    申请人:Emag Holding Gmbh；
    IPC主号:
    专利说明:

    The invention relates to a device for the electrochemical machining of metallic workpieces according to the preamble of the claim. In the prior art, electrodes for processing preformed workpieces are known which have an allowance in the area to be processed, which is removed using an electrochemical removal process (ECM or PECM). DE 10 2009 032 563 A1, for example, relates to an electrode whose surface corresponds to the outer contour of rotor blades to be machined. The electrode is hydraulically adjustable for more precise generation of the outer contour. In addition to external machining, electrochemical machining can also be used to produce precise micro-bores. A potential is built up between the component serving as anode and the electrode serving as cathode, and the component material is removed via an electrolyte. The electrolyte is passed through the electrode or laterally from it onto the component area to be processed. Such an electrode is disclosed in DE 10 2010 032 326 A1. This has an effective surface for defining a working gap between a side wall section to be removed and the electrode. The effective surface is inclined or formed in an arc shape.
    The object of the invention is to accelerate the machining of workpieces with bores and surfaces to be machined according to the ECM or PECM removal method and to make it more precise.
    This object is achieved with a device according to claim 1. For machining workpiece outer contours and workpiece recesses, at least one combined electrode with two segments is provided, whereby the workpiece outer contour and workpiece recesses, e.g. Bores are at least partially machinable at the same time. The invention is explained in more detail below using exemplary embodiments.
    In the schematic figures, the representation of the electrolyte and the gaps between the electrode and workpiece has been omitted.
    [0005] It shows:<tb> Fig. 1 and 2: <SEP> a device for machining cam disks<tb> FIGS. 3a and 3b: <SEP> an electrode for machining turbine blades, in particular for producing microbores and for removing material from workpiece surfaces<tb> FIGS. 4a to 4c: <SEP> the electrode according to FIG. 3 in processing operation<tb> Fig. 5 <SEP> a finished workpiece
    In FIG. 1, a workpiece 3 is stored in a workpiece holder 5. A cam disk with a workpiece recess 7 in the form of a preformed hole is to be machined as workpiece 3. The workpiece 3 is fixed in the correct position with a centering pin 4 which protrudes into the bore. The centering pin 4 is preloaded with a spring and can be moved out of the bore against the spring force.The illustration in FIG. 2 shows the device during processing. The first electrode segment 1 for machining the workpiece outer contour 6 and the electrode segment 2 for machining the workpiece recess 7 were lowered together onto the workpiece 3. The centering pin 4 was displaced by the electrode segment 2. In the preformed hole, a machining allowance is removed and / or a profile is generated by removing material. Advantageously, the bore of the cam disk and the outer cam contour can be machined simultaneously in one workpiece clamping. In addition to shortening cycle times, this enables extremely precise workpiece machining.
    Figures 3a and 3b show an electrode for machining turbine blades in plan view and in side view. The electrode segments 1 and 2 are arranged together on an electrode holder 10. The electrode segment 1 has a profile 12 which corresponds to the workpiece outer contour 6 to be machined. The electrode segment 2 for producing microbores is divided into two areas. The drilling segment 8 penetrates the workpiece in the feed direction 11 and creates a hole which is then drilled to the finished size by the calibration segment 9. The engagement of the electrodes on the workpiece is explained in more detail with reference to FIGS. 4a to 4c. 4a shows the production of a hole through the drilling segment 8. As the electrode segment 2 penetrates further into the workpiece 3, the calibration segment 9 also comes into engagement and widens the hole to the finished diameter. Finally, FIG. 4c shows the completion of the bore and the machining of the workpiece outer contour 6 by the electrode segment 1. A profile 12 is generated on the workpiece outer contour 6. A workpiece recess 7 can be introduced and a profile 12 can be produced on the workpiece outer contour 6 with a single feed movement. For a better understanding, the machined part of the workpiece 3 is shown separately in FIG. 5 in top and side views. The workpiece recess 7 and the removal of material on the workpiece outer contour 6 can be seen there.
    Reference number
    1 electrode segment for machining workpiece outer contours 2 electrode segment for machining workpiece recesses 3 workpiece 4 centering mandrel 5 workpiece holder 6 workpiece outer contour 7 workpiece recess 8 drilling segment 9 calibration segment 10 electrode holder 11 feed direction 12 profile
    权利要求:
    Claims (1)
    [1]
    1. Device for the electrochemical machining of a metallic workpiece (3), wherein a potential difference can be built up between a workpiece (3) serving as an anode and at least one electrode of the device serving as a cathode and a material removal can thereby be brought about via an electrolyte, the electrode at least one first electrode segment (1) for machining workpiece outer contours (6) and at least one second electrode segment (2) for machining workpiece recesses (7),characterized in that both electrode segments (1, 2) can be brought into joint engagement in a feed direction (11) to the workpiece (3), so that both the first electrode segment (2) and the second electrode segment (1) are aligned parallel to the feed direction (11) and that the second electrode segment (2) has a drilling segment (8) and a calibration segment (9), the drilling segment (8) and the calibration segment (9) being arranged one behind the other in the feed direction (11), whereby a bore can be created with the drilling segment and this can then be drilled to the finished size with the calibration segment.
    类似技术:
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    同族专利:
    公开号 | 公开日
    DE102014012180A1|2016-02-18|
    DE102014012180B4|2019-01-31|
    CN105364234A|2016-03-02|
    TW201615313A|2016-05-01|
    FR3024842A1|2016-02-19|
    US20160045968A1|2016-02-18|
    FR3024842B1|2021-12-10|
    TWI665043B|2019-07-11|
    CH710045A2|2016-02-29|
    JP2016041466A|2016-03-31|
    引用文献:
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    LU35989A1|1957-04-19|
    FR1420882A|1965-07-13|1965-12-10|Exnii Metallorezh Stankov|Process of machining parts by electro-erosion|
    US3511767A|1968-11-18|1970-05-12|Anocut Eng Co|Electrode for electrolytic shaping|
    DE2025392A1|1970-05-25|1971-12-09|Nassovia Werkzeugmaschf|Device and method for electrochemical metal removal|
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    DE10132408C2|2001-07-04|2003-08-21|Fraunhofer Ges Forschung|Variable shape electrode|
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    CN201338148Y|2009-01-15|2009-11-04|安徽龙磁科技股份有限公司|Clamp for rapid positioning of punch during electric spark machining|
    DE102009032563A1|2009-07-10|2011-01-13|Mtu Aero Engines Gmbh|Device and method for the electrochemical removal of a surface of a component|
    DE102010032326A1|2010-07-27|2012-02-02|Mtu Aero Engines Gmbh|Electrode for performing electrochemical processing to form pilot hole in e.g. cathode, has active surface for defining work gap between ablated side surface portion and electrode, where surface is formed as arc shaped in feed direction|
    US8663450B1|2010-11-19|2014-03-04|The United States Of America As Represented By The Secretary Of The Army|Guide bore electrical machining methods|
    CN103302368B|2013-06-19|2015-02-18|清华大学|Three-electrode high-frequency ultrashort pulse micro electrochemical machining power supply and electrochemical machining method thereof|DE102016123557A1|2016-12-06|2018-06-07|Thyssenkrupp Ag|Method for producing cams, camshafts and camshaft modules and cams produced in this way|
    法律状态:
    2018-10-31| AZW| Rejection (application)|
    2019-08-15| AZW| Rejection (application)|
    2020-05-29| AEN| Modification of the scope of the patent|Free format text: :DIE PATENTANMELDUNG WURDE AUFGRUND DES WEITERBEHANDLUNGSANTRAGS VOM 30.09.2019 REAKTIVIERT. |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102014012180.1A|DE102014012180B4|2014-08-16|2014-08-16|Device for electrochemical machining of metallic workpieces|
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