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11. 发明专利

DE19621780A1 未知
公开(公告)号：DE19621780A1
公开(公告)日：1997-02-06
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.\!

12. 发明专利

DE19607361A1 NC-regulated spark machining process 未知
公开(公告)号：DE19607361A1
公开(公告)日：1996-08-29
申请号：DE19607361
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： B23H1/04 , B23H7/06 , B23H7/20 , B23H7/26 , B23H7/30 , B23H1/00
摘要： Spark erosion machining processes and machines are claimed in which three-dimensional control is effected by NC regulation while carrying out advance in a Z-axis direction for compensating electrode length wear and X-Y plane advance to machine a desired three-dimensional shape. One process involves (a) storing a compensating movement amount for carrying out a correction in the Z-axis direction corresponding to a determined unitary movement distance in a X-Y plane; and (b) carrying out an advance, according to the determined compensating movement amount, in the Z-axis direction every time that a movement distance in the X-Y plane attains the unitary movement distance.

13. 发明专利

DE4117620C2 未知
公开(公告)号：DE4117620C2
公开(公告)日：1995-12-21
申请号：DE4117620
申请日：1991-05-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAGARA TAKUJI
IPC分类号： B23H1/02 , B23H7/18
摘要： An electric discharge machine in which a machining gap or machining area is calculated from the rise time of a pulse voltage applied to the machining gap to stabilize and optimize the marching operation. An abnormal machining conditions such as an arc discharge can be positively detected and avoided. Further, the low surface roughness finish which is impossible to achieve in a large area machining operation can be accomplished.

14. 发明专利

DE4422820A1 Electrical discharge machining unit 未知
公开(公告)号：DE4422820A1
公开(公告)日：1995-01-19
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 machining unit for machining a workpiece by applying a voltage to a working gap which is formed between an electrode and the tool has a direct-current power supply for delivering a working current and a current limiter which is connected in series with the direct-current power supply in order to limit the working current. A switching device is connected in series with the direct-current power supply as well as with the current limiter and can be operated in such a way that it makes a voltage available to the working gap and forms a direct-current pulse. A series circuit consisting of an inductance and a capacitor is connected in parallel with the working gap. The purpose of the series circuit is either to suppress the interruption in a direct-current-pulse current component which follows a capacitor-discharge current component, as a result of which a pulsed-current phenomenon is prevented from occurring, or to suppress the continuation of a direct-current-pulse current component, in particular of pulses, which follows a capacitor-discharge current component. Irrespective of whether the final machining is to have a mirror quality, values for the capacitance and inductance for the series circuit can be selected within specified ranges.

15. 发明专利

CH684061A5 Drahterodiermaschine. 未知
公开(公告)号：CH684061A5
公开(公告)日：1994-07-15
申请号：CH274391
申请日：1991-09-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAGARA TAKUJI , SHIBATA YOSHIO , YAMAMOTO MASAHIRO , TSURUMOTO KAZUO
IPC分类号： B23H7/04 , B23H7/10 , B23H7/02 , B23Q3/08

16. 发明专利

CH675091A5 未知
公开(公告)号：CH675091A5
公开(公告)日：1990-08-31
申请号：CH417887
申请日：1987-10-26
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAGARA TAKUJI , SUZUKI TOSHIO
IPC分类号： B23H7/02 , B23H7/06

17. 发明专利

CH672607A5 未知
公开(公告)号：CH672607A5
公开(公告)日：1989-12-15
申请号：CH252688
申请日：1988-10-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： MAGARA TAKUJI , SUZUKI TOSHIO
IPC分类号： B23H7/06

18. 发明专利

DE19710458B4 未知
公开(公告)号：DE19710458B4
公开(公告)日：2006-05-04
申请号：DE19710458
申请日：1997-03-13
申请人： MITSUBISHI ELECTRIC CORP
发明人： YUZAWA TAKASHI , YOSHIDA MANABU , MAGARA TAKUJI
IPC分类号： B23H7/28 , B23H7/20 , B23H7/26 , B23H7/30
摘要： The electrical discharge machining device includes storage apparatus for storing the two-dimensional contour pass of the machined shape formed by the primary machining operation, the dimension of the taper of the side surface of the workpiece to be machined, the amounts of feed of the electrode in a given Z direction with respect to the movements of the electrode in the X and Y direction under respective machining conditions; information adding apparatus for adding offset information to the above-mentioned contour pass; machining operation number calculating apparatus, in accordance with a previously obtained machining depth per round about an electrode pass, for calculating the number of machining operations to be repeatedly executed around the electrode pass until a target depth is obtained; offset displacement amount calculating apparatus for calculating an offset displacement amount per round about the electrode pass in accordance with the length in the above-mentioned side surface direction of the side surface taper dimensions and the number of repeated machining operations; and, electrode position control apparatus, in accordance with an offset position added to the contour pass by the offset information adding apparatus, for controlling the offset displacement amount each time the electrode pass is machined.

19. 发明专利

DE10297065T5 未知
公开(公告)号：DE10297065T5
公开(公告)日：2004-11-18
申请号：DE10297065
申请日：2002-06-12
申请人： MITSUBISHI ELECTRIC CORP
发明人： KOBAYASHI HIROATSU , MAGARA TAKUJI
IPC分类号： B23H1/02 , B23H7/04
摘要： Power source apparatus for wire discharge processing machine comprises: discharge state recognition means; application voltage selection means; and voltage selection means which reverses the polarity of the voltage as the previous induction voltage in the case when the discharge state is abnormal or open, and applies voltage of the same polarity if the discharge is at a normal state. Power source apparatus for wire discharge processing machine which applies pulse voltage between a wire electrode and a processing target to induce discharge thereby processing the target by breaking the insulation, comprises: discharge state recognition means; application voltage selection means; and voltage selection means which reverses the polarity of the voltage as the previous induction voltage in the case when the discharge state is abnormal or open, and applies voltage of the same polarity if the discharge is at a normal state.

20. 发明专利

CH693272A5 Procédé etappareil pour traitement de surface parétincelage. 未知
公开(公告)号：CH693272A5
公开(公告)日：2003-05-15
申请号：CH120098
申请日：1998-06-02
申请人： MITSUBISHI ELECTRIC CORP , JAPAN SCIENCE AND TECHNOLOGY CO , SAITO NAGAO
发明人： MOURI NAOTAKE , MAGARA TAKUJI , GOTO AKIHIRO
IPC分类号： C23C8/02 , C23C8/36 , C23C26/00 , C23C30/00

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