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51. 发明专利

DE2362251A1 未知
公开(公告)号：DE2362251A1
公开(公告)日：1974-06-20
申请号：DE2362251
申请日：1973-12-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAITO NAGAO , KOBAYASHI KAZUHIKO , OIZUMI TOSHIRO
IPC分类号： B23H1/02 , B23P1/04
摘要： A method and apparatus for shaping a workpiece by electrical discharge, the workpiece being shaped by a shaping electrode by intermittently impressing a voltage pulse across a working gap formed between the workpiece and the shaping electrode. The apparatus comprises a means for efficiently controlling the duration of a discharge across the working gap according to a condition dependent upon a no-load voltage impressing period, i.e., the period of operation beginning with the impression of the voltage pulse and ending with the occurrence of a discharge, and further according to the state of the working gap detected in terms of a processing voltage mean value. When a no-load voltage impressing period is inside a given interval, the duration of a discharge is increased according to the length of the period. Alternatively, when the no-load voltage impressing period is outside the given interval, the duration of a discharge corresponding to the state of the working gap is not increased. Accordingly, operating stability is improved and electrode consumption is minimized.

52. 发明专利

BE799819A 未知
公开(公告)号：BE799819A
公开(公告)日：1973-11-21
申请号：BE131346
申请日：1973-05-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAITO NAGAO , KOBAYASHI KAZUHIKO , KAKAGI SHIGERU
IPC分类号： B23H1/02 , B23P

53. 发明专利

CA886171A ELECTRIC DISCHARGE MACHINING METHOD AND APPARATUS 未知
公开(公告)号：CA886171A
公开(公告)日：1971-11-16
申请号：CA886171D
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAITO NAGAO , KOBAYASHI KAZUHIKO

54. 发明专利

DE10085487B3 未知
公开(公告)号：DE10085487B3
公开(公告)日：2007-04-26
申请号：DE10085487
申请日：2000-09-13
申请人： MITSUBISHI ELECTRIC CORP , NAOTAKE MOHRI
发明人： MOHRI NAOTAKE , SAITO NAGAO , OGAWA HAJIME , KAMIYA KIYOHITO
IPC分类号： B23H1/02 , B23H7/16 , B23H7/18
摘要： An electric discharge machining apparatus for supplying machining electric power to a gap between an electrode (1) and a workpiece (2). The apparatus includes a gap dimension detection device (8) for detecting a dimension of the gap, a gap average voltage detection device (11) for detecting an average voltage of the gap, a gap dimension correction device (13) for correcting the dimension of the gap, and a gap dimension correction starting device (12) for starting the gap dimension correction device (13) when a first comparison between a detected gap dimension and a predetermined allowable value and a second comparison between a detected gap average voltage and a predetermined reference average voltage are made and the gap dimension detected by the first comparison is larger than the predetermined allowable value and the gap average voltage detected by the second comparison is smaller than the predetermined reference average voltage.

55. 发明专利

DE4436663A1 Method and apparatus for surface treatment by means of machining by electrical discharge 未知
公开(公告)号：DE4436663A1
公开(公告)日：1995-04-20
申请号：DE4436663
申请日：1994-10-13
申请人： MITSUBISHI ELECTRIC CORP , MOHRI NAOTAKE
发明人： MOHRI NAOTAKE , SAITO NAGAO , MAGARA TAKUJI , OHIZUMI TOSHIRO
IPC分类号： B23H9/00 , B23P23/04 , C23C26/00 , C23C30/00 , G05D13/00
摘要： In the case of a method and an apparatus for surface treatment for the purpose of providing resistance to wear and corrosion, an altered metal part, the surface of which is intended to be altered, and a block, which may consist only of metal or may contain an alteration material (for example ceramic or W-C/Co), are rotated relative to one another, and an electrical discharge is produced between the block and the altered metal part in order to form an alteration layer on the surface of the altered metal part. If the alteration material is not in the block, then it can be supplied via a bath of a dielectric or by spraying on to the discharge boundary area. In this way, it is possible for the cutting edges of a cutting tool having a complicated shape to undergo a simple surface alteration, in order to carry out tool surface treatment which substantially increases the service life of a cutting tool. The cutting machining and the surface treatment can be carried out alternately, this being established by a controller.

56. 发明专利

CA972317A METHOD AND APPARATUS FOR ELECTROLYTICALLY ETCHING A WORKPIECE 未知
公开(公告)号：CA972317A
公开(公告)日：1975-08-05
申请号：CA86295
申请日：1970-06-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： SAITO NAGAO , KUJI YOICHI
IPC分类号： B23H3/00 , B23H3/02

57. 发明专利

DE112013007570T5 Elektrochemisches Bearbeitungsverfahren, elektrochemische Bearbeitungsvorrichtung und elektrochemisches Bearbeitungsfluid 未知
公开(公告)号：DE112013007570T5
公开(公告)日：2016-09-01
申请号：DE112013007570
申请日：2013-11-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： GOTO AKIHIRO , SAITO NAGAO , YUZAWA TAKASHI , MOHRI NAOTAKE , HAISHI YUICHIRO
IPC分类号： B23H3/10
摘要： In einem elektrochemischen Bearbeitungsverfahren, bei dem, während die Polarität einer Elektrode umgeschaltet wird, eine Spannung angelegt wird, um einen Strom zwischen der Elektrode und einem Hartmetall, das ein Werkstück ist, fließen zu lassen, wobei die Elektrode als eine negative Elektrode verwendet wird, dergestalt, dass Wolframcarbid (WC), das eine Komponente des Hartmetallwerkstücks ist, anodisiert wird, um ein Wolframoxid (WO3) zu bilden, und eine Spannung zugeführt wird, um einen Strom dazwischen fließen zu lassen, wobei die Elektrode als positive Elektrode verwendet wird, dergestalt, dass Kobalt (Co), das eine Komponente des Hartmetallwerkstücks ist, elektrolytisch eluiert wird, und gleichzeitig das durch das Anodisieren erzeugte Wolframoxid (WO3) in dem elektrochemischen Bearbeitungsfluid aufgelöst wird, eine Salzlösung (wässrige Lösung aus NaCl) oder eine wässrige Lösung aus Natriumnitrat (Na(NO3)) als ein elektrochemisches Bearbeitungsfluid verwendet wird; ein Kalziumsalz zuvor zu dem elektrochemischen Bearbeitungsfluid hinzugefügt wird, damit bei der elektrochemischen Bearbeitung erzeugtes Natriumwolframat (Na2WO4) und das Kalziumsalz eine Reaktion durchlaufen können, bei der Kalziumwolframat (CaWO4) entsteht; und eine Kalziumverbindung unter Ausnutzung einer Differenz der spezifischen Dichte abgetrennt und zurückgewonnen wird.

58. 发明专利

DE69211308T2 未知
公开(公告)号：DE69211308T2
公开(公告)日：1996-11-21
申请号：DE69211308
申请日：1992-12-22
申请人： MITSUBISHI ELECTRIC CORP , MOHRI NAOTAKE
发明人： SAITO NAGAO , MAGARA TAKUJI , MOHRI NAOTAKE
IPC分类号： B23H1/00 , B23H1/02 , B23H1/08 , B23H1/10 , B23H9/00 , C23C26/00 , C23C26/02

59. 发明专利

CA1288131C ROTATION CONTROLLER FOR A DIFFERENTIAL ACTUATOR 未知
公开(公告)号：CA1288131C
公开(公告)日：1991-08-27
申请号：CA518547
申请日：1986-09-18
申请人： MOHRI NAOTAKE , MITSUBISHI ELECTRIC CORP
发明人： MOHRI NAOTAKE , SAITO NAGAO , YANAI YOSHIHIKO , MIURA KUNIHARU
IPC分类号： H02P5/753 , H02P7/753
摘要： A rotation control apparatus controller for use with a differential actuator which includes two induction motors and a differential mechanism for producing a constant torque on its output shaft basing on the differential speed of the induction motors, comprises two inverters each located between one of the induction motor and a common power source for the induction motors and having individual voltage/frequency output characteristics. The inverters set separately the voltage/frequency output characteristics of power supplied to the induction motors so as to control the speed of the induction motors separately, thereby controlling the output torque on the output shaft of the differential actuator. And the output shaft of the differential actuator is controlled to constant speeds regardless of the load torque on the shaft basing on the difference of setting frequencies on both inverters.

60. 发明专利

CA1260732A DIFFERENTIAL ACTUATOR 未知
公开(公告)号：CA1260732A
公开(公告)日：1989-09-26
申请号：CA504496
申请日：1986-03-19
申请人： NAOTAKE MOHRI , MITSUBISHI ELECTRIC CORP
发明人： MOHRI NAOTAKE , SAITO NAGAO , MIURA KUNIHARU , YANAI YOSHIHIKO
IPC分类号： F16H1/28 , B25J11/00 , F16H3/72 , F16H48/06
摘要： A differential actuator including a pair of unit actuators enclosed in a housing is disclosed. Rotational shafts of the unit actuators support bevel gears in opposed relation to each other. These bevel gears constitute a differential mechanism conjointly with two differential gears which are interconnected rotatably. Rotation of the differential gears around the axis of the bevel gears is taken out to the exterior as an output of the actuator.

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