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1. 发明专利

DE10085447B4 Wire electric discharge machining apparatus comprising wire bobbin on which wire electrode is wound 未知
公开(公告)号：DE10085447B4
公开(公告)日：2009-06-04
申请号：DE10085447
申请日：2000-03-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAGARA TAKUJI , YAMADA HISASHI
IPC分类号： B23H7/10 , B65H57/20
摘要： An apparatus is provided with a wire bobbin (3) on which a wire electrode (1) is wound, a fastening base (25) for fastening the bobbin (3) to prevent it from rotating, a guide pulley (23) for supporting the electrode (1), a rotating arm (21) for supporting the pulley (23), drawing out the wire electrode (1), and allowing the electrode (1) to rotate around the bobbin (3), a sliding mechanism (24) for supporting the guide pulley (23) on the rotating arm (21) according to the position where the wire electrode (1) is wound, and a breaking motor (13) for driving the rotating arm (21). The consumption of the electrode (1) can be dispersed to improve the machining speed and accuracy. Moreover, the reliability can be improved and the production cost is low.

2. 发明专利

DE10195136B4 未知
公开(公告)号：DE10195136B4
公开(公告)日：2008-01-17
申请号：DE10195136
申请日：2001-01-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMADA HISASHI , MAGARA TAKUJI , TERADA YUTAKA
IPC分类号： B23H7/10
摘要： An automatic wire feeder of a wire electric discharge machine includes an optical sensor for detecting positional information of a wire electrode in an inserting passage between a feed roller for feeding a wire electrode and an upper wire guide; and a control unit for discriminating a state of vibration or deflection of the wire electrode according to the positional information detected by the optical sensor and also for controlling a feeding and rewinding motion of the feed roller according to a quantity of deflection of the wire electrode. Due to the foregoing, buckling caused by an inserting load in the process of automatic wire connection can be positively detected, and the reliability can be enhanced and further the repetition of connecting the wire again can be reduced.

3. 发明专利

DE19654964B4 Device for electrical discharge machining, comprises workpiece holder, electrode, programmed storage device for required shape and machining conditions, and electrode feed with special wear-compensation system 未知
公开(公告)号：DE19654964B4
公开(公告)日：2006-09-21
申请号：DE19654964
申请日：1996-02-27
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAGARA TAKUJI , GOTO AKIHIRO , IMAI YOSHIHITO , SENDAI TOMOKO , SATO TATSUSHI , MIYAKE HIDETAKA
IPC分类号： B23H7/28
摘要： A device for electrical discharge machining, has an electrode-advance system programmed to produce the required machined shape and compensate for electrode wear. A device for electrical discharge machining, comprising (a) a holder (3) for the workpiece (2); (b) a machining electrode (1) with a simple shape; (c) a power supply (8); (d) a storage device for storing the required final shape and the machining conditions, plus an NC machining program for advancing (1) relative to (2) along a movement path (P) in the X-Y plane; (e) a feeder (5, 6) for advancing the electrode (1) as in (d); (f) an electrode-wear corrector (11) for gradually advancing the electrode (1) in the Z-direction at right angles to X-Y, with a control unit (10; 30; 63) for (f1) controlling the feeder (5, 6) to move the electrode according to the program in successive steps each corresponding to a correction reference value (delta L) until the end of the movement, (f2) stopping the electrode (1) after a step corresponding to delta L and (f3) lowering (1) in the Z-direction towards the workpiece (2) by a correction adjustment value (delta Zu) after stopping the advance along path P by a step corresponding to delta L, where (f4) the control unit includes a repeat-number control device (22) which, with the aid of a machining depth (E) and a rate of movement in the Z-direction (delta Z), determines how often a tool path has to be cut along path P; (g) a device (23) for measuring the machining depth during or after repeats, the control unit (10; 30; 63) being designed to change at least one of the following parameters if the measured value varies too much from an acceptable value: (g1) remaining number of repeats (N), (g2) Z-axis correction adjustment value (delta Zu), (g3) a value (~Lu) equivalent to the x-y movement distance in the X-Y plane corresponding to delta Zu and (g4) electrical conditions for controlling electrode wear; and (h) a device for adjusting delta L and delta Zu in parallel and in accordance with the stored machining conditions. An independent claim is included for a method for electrical discharge machining by holding a workpiece and machining it with a controlled moving electrode as described above.

4. 发明专利

CH695484A5 Automatische Drahtelektrodenzufuhr für Drahtfunkenerosionsmaschine. 未知
公开(公告)号：CH695484A5
公开(公告)日：2006-06-15
申请号：CH15532001
申请日：2001-01-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMADA HISASHI , MAGARA TAKUJI , TERADA YUTAKA
IPC分类号： B23H7/10

5. 发明专利

CH694853A5 Verfahren zur Elektroerosions-Bearbeitung eines Werkstueckes und Draht-Funkenerosionsmaschine. 未知
公开(公告)号：CH694853A5
公开(公告)日：2005-08-15
申请号：CH15082000
申请日：2000-03-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMADA HISASHI , MAGARA TAKUJI
IPC分类号： B23H7/10 , B65H57/20

6. 发明专利

DE19621780C2 未知
公开(公告)号：DE19621780C2
公开(公告)日：2003-04-17
申请号：DE19621780
申请日：1996-05-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： GOTO AKIHIRO , MAGARA TAKUJI , YAMAMOTO MASAHIRO
IPC分类号： B23H1/02
摘要： An electric discharge machine includes a pulse determining section, which determines whether an electric discharge pulse is an effective electric discharge pulse contributing to machining or an ineffective pulse not contributing to machining, a pulse counting section, which counts the number of electric discharge pulses determined to be effective electric discharge pulses, a machining speed measuring section, which measures the machining rate in the axial direction, a dividing section, which divides the total number of electric discharge pulses by the machining rate in the axial direction, a storage section, which stores predetermined constant data corresponding to electric conditions such as a waveform for a current due to materials of an electrode and a workpiece or generation of electric discharge, and a machined area computing section, which computes a machined area according to the divided data and the stored constant data. A method for controlling the electric discharge machine is also described.\!

7. 发明专利

CH692278A5 Appareil et procédé d'usinage par électro-érosion. 未知
公开(公告)号：CH692278A5
公开(公告)日：2002-04-30
申请号：CH121397
申请日：1997-05-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAGARA TAKUJI , YUZAWA TAKASHI
IPC分类号： B23H7/20 , B23H7/26 , B23H7/30 , B23H7/32

8. 发明专利

DE4422834C2 未知
公开(公告)号：DE4422834C2
公开(公告)日：2000-03-23
申请号：DE4422834
申请日：1994-06-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAGARA TAKUJI
IPC分类号： B23H1/02

9. 发明专利

DE4422820C2 未知
公开(公告)号：DE4422820C2
公开(公告)日：1997-12-11
申请号：DE4422820
申请日：1994-06-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAGARA TAKUJI
IPC分类号： B23H1/02 , B23H7/04
摘要： An electrical discharge machine for machining a workpiece with the application of a voltage to a machining gap formed between an electrode and the workpiece which has a direct-current power supply for supplying a machining current and a current limiting device connected in series with the direct-current power supply for limiting the machining current. A switching device is connected in series with the direct-current power supply and current limiting device and is operative to provide a voltage to the machining gap and to form a direct-current pulse. A series circuit of an inductance and a capacitor is provided in parallel with the machining gap. The purpose of the series circuit is either for suppressing the interruption of a direct-current pulse current component which follows a capacitor discharge current component, whereby the occurrence of a pulse crack phenomenon can be prevented or for suppressing the continuation of a direct-current pulse current component, particularly pulses, which follows a capacitor discharge current component. Depending on whether or not the finish is to be of mirror quality, values of capacitance and inductance for the series circuit can be chosen within specified ranges.

10. 发明专利

DE19707696A1 Processing device for materials by electric discharge e.g. for manufacture of tool electrodes 未知
公开(公告)号：DE19707696A1
公开(公告)日：1997-11-06
申请号：DE19707696
申请日：1997-02-26
申请人： MITSUBISHI ELECTRIC CORP
发明人： SATO TATSUSHI , IMAI YOSHIHITO , SENDAI TOMOKO , MIYAKE HIDETAKA , YUZAWA TAKASHI , MAGARA TAKUJI
IPC分类号： B23H1/04 , B23H1/06 , C04B35/52 , B23H1/00
摘要： The device uses a discharge, such as by generating the discharge on the utilisable conductive surface of an anisotropic, conductive material, and includes a tool electrode in which either the tool electrode or the work-piece consists of an anisotropic, conductive material, and an isotropic, conductive part. The isotropic part is connected to the useful conductive surface of the anisotropic, conductive material. More specifically, the anisotropic, conductive material contains a carbon material (2) which is reduced or broken down by heating action. This latter material is specifically used as the tool electrode material. A non-combustible dielectric fluid is used as the dielectric fluid. Also shown are adhesive medium (23), conducting surface layer (20b) and copper tube (22).

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