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1. 发明授权

US3884790A Apparatus for electrolytically etching 失效
标题翻译：电解蚀刻装置
公开(公告)号：US3884790A
公开(公告)日：1975-05-20
申请号：US37496073
申请日：1973-06-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： KOBAYASHI KAZUHIKO , TAKAWASHI TAMIO , ARAI SHINJI
IPC分类号： B23H3/02 , B23P1/02 , B01K3/00
CPC分类号： B23H3/02
摘要： An apparatus for electrolytically etching a workpiece comprises means for interrupting a power source quickly when an abnormal phenomenon occurs, and means for accurately detecting an abnormal current attenuation occuring between an electrode and a workpiece. In the apparatus for electrolytically etching a workpiece, a saturable reactor constant voltage automatic controlling system is employed for the electrolytic etching power source, and in order to decrease the size of an interrupting thyristor and to complete the interrupting of the working current; an interrupting diode is inserted between the saturable reactor, a stepdown transformer and a three phase full wave rectification, and the interrupting thyristor is connected to the output and is turned on by an abnormal phenomenon detecting signal so that the feed to the workpiece and the electrode is stopped by a short circuit of the three phase alternating current between the saturable reactor and the stepdown transformer. The abnormal phenomenon occuring between the electrode and the workpiece in the electrolytic etching, is detected by employing a sample and hold circuit, an operational amplifier and a logic circuit to prevent damage to the electrode and the workpiece. Further, an apparatus for electrolytically etching a workpiece wherein an abnormal current attenuation is detected with high accuracy is provided so that the ripple component of the working power source due to a spark or voltage change component caused by electrical noise and spark, is detected with high accuracy.

2. 发明专利

DE3137050A1 未知
公开(公告)号：DE3137050A1
公开(公告)日：1982-04-01
申请号：DE3137050
申请日：1981-09-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMADA SHIGEO , TAKAWASHI TAMIO , SAKAKIBARA TOSHIMITSU
IPC分类号： B23H1/00 , B23P1/08
摘要： A discharge machining apparatus wherein the workpiece is supported over an aperture in the work support plate on top of a tank at the machining station for cooperation with an electrode movable toward and away from the workpiece in alignment with the aperture. A machining solution recirculation device injects the solution into the tank and removes the solution from the tank at a greater rate than it is injected into the tank. Additional fluid is directed into the tank through the aperture between the workpiece and electrode. An additional conduit having a solenoid controlled valve is provided for supplying an excess of solution to the tank upon raising of the electrode to overflow the tank and remove all sludge and combustible gases. The exhaust pipe for the solution is also adjustably mounted within the tank to more effectively position the inlet of the exhaust pipe for the optimum removal of combustible gases. A pressure release valve is provided in the side wall of the tank to vent explosive gases and prevent damage to the workpiece and electrode.

3. 发明专利

CH656819A5 FUNKENEROSIONSBEARBEITUNGSEINRICHTUNG. 未知
公开(公告)号：CH656819A5
公开(公告)日：1986-07-31
申请号：CH93482
申请日：1982-02-15
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMADA SHIGEO , TAKAWASHI TAMIO , SAKAKIBARA TOSHIMITSU
IPC分类号： B23H1/02

4. 发明专利

DE2333840A1 未知
公开(公告)号：DE2333840A1
公开(公告)日：1974-01-10
申请号：DE2333840
申请日：1973-07-03
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKAWASHI TAMIO , ARAI SHINJI , KOBAYASHI KAZUHIKO
IPC分类号： B23H3/02 , B23P1/04

5. 发明专利

CH661462A5 STEUERVORRICHTUNG FUER EINE FUNKENEROSIONSMASCHINE. 未知
公开(公告)号：CH661462A5
公开(公告)日：1987-07-31
申请号：CH393082
申请日：1982-06-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKAWASHI TAMIO , SAKAKIBARA TOSHIMITSU , YAMADA SHIGEO
IPC分类号： B23H1/02 , B23H7/18 , B23Q15/22

6. 发明专利

CH657300A5 FUNKENEROSIONSBEARBEITUNGSEINRICHTUNG. 未知
公开(公告)号：CH657300A5
公开(公告)日：1986-08-29
申请号：CH93382
申请日：1982-02-15
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMADA SHIGEO , TAKAWASHI TAMIO , SAKAKIBARA TOSHIMITSU
IPC分类号： B23H1/02

7. 发明专利

DE3223608A1 未知
公开(公告)号：DE3223608A1
公开(公告)日：1983-01-13
申请号：DE3223608
申请日：1982-06-24
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKAWASHI TAMIO , SAKAKIBARA TOSHIMITSU , YAMADA SHIGEO
IPC分类号： B23H1/02 , B23H7/18 , B23P1/08

8. 发明专利

DE3204798A1 未知
公开(公告)号：DE3204798A1
公开(公告)日：1982-09-16
申请号：DE3204798
申请日：1982-02-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMADA SHIGEO , TAKAWASHI TAMIO , SAKAKIBARA TOSHIMITSU
IPC分类号： B23H1/02 , B23P1/08
摘要： An electric discharge machining device is provided with detecting means operable to determine when a particular machining operation, e.g. the formation of a through-hole in a workpiece, has been completed. In all cases, the position of the electrode is monitored to determine the present machining depth, and whether this depth is the largest depth thus far achieved. The detection of an increasing machining depth is coupled with at least one other detection factor, such as electrode speed, machining fluid flow or machining fluid pressure, such that the penetration of the electrode through the workpiece can be positively sensed. In response to such an indication, a stop signal is output to the power supply unit, to end the machining operation.

9. 发明专利

DE3204799A1 未知
公开(公告)号：DE3204799A1
公开(公告)日：1982-09-09
申请号：DE3204799
申请日：1982-02-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMADA SHIGEO , TAKAWASHI TAMIO , SAKAKIBARA TOSHIMITSU
IPC分类号： B23H1/02 , B23P1/08
摘要： An EDM machining apparatus is provided with means for automatic shut off upon completion of a machining process, including a voltage variation pattern detector capable of discriminating electrode penetration of the workpiece. Several other machining parameters, such as machining solution flow and pressure, machining depth, and electrode speed and direction may be used is secondary or confirmation detection factors, so as to positively detect the time of electrode penetration, and halt the machining process.

10. 发明专利

CH654776A5 STEUEREINRICHTUNG AN EINER FUNKENEROSIONSBEARBEITUNGSMASCHINE. 未知
公开(公告)号：CH654776A5
公开(公告)日：1986-03-14
申请号：CH124182
申请日：1982-03-01
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAKAWASHI TAMIO , SAKAKIBARA TOSHIMITSU , YAMADA SHIGEO
IPC分类号： B23H1/02 , B23H7/18 , B23H7/32

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