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1. 发明专利

JPH07185947A ELECTRIC DISCHARGE MACHINE 失效
公开(公告)号：JPH07185947A
公开(公告)日：1995-07-25
申请号：JP33266093
申请日：1993-12-27
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWAZU HIDETOSHI
IPC分类号： B23H1/10 , B23H7/36
摘要： PURPOSE:To improve the stirring capability of the machining liquid in a machining tank without the whole change of an electric discharge machine to cope with the upsizing of the machining tank by arranging a suction port and a discharge port of the machining liquid in the machining tank, and providing a machining liquid circulating means to circulate the machining liquid in the machining tank. CONSTITUTION:A second machining liquid circulating means 50 to circulate the machining liquid in a machining tank having a suction port and a discharge port is provided on the machining tank 3 in addition to a first machining liquid circulating means 49 to circulate the machining liquid through the machining liquid tank of the electric discharge machine, the machining tank 3, and the machining liquid tank. The suction port of the second machining liquid circulating means 50 is provided not in the tank, but in the machining tank 3, and the machining liquid in the machining tank 3 is stirred by sucking/discharging the machining liquid in the machining tank 3. The adaptability of the electric discharge machine is improved by chaning only the capacity of the second machining liquid circulating means 50 to match the size of this machining tank 3.

2. 发明专利

JPH0276624A ELECTRIC DISCHARGE MACHINE 失效
公开(公告)号：JPH0276624A
公开(公告)日：1990-03-16
申请号：JP22897888
申请日：1988-09-13
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWAZU HIDETOSHI
IPC分类号： B23H1/02
摘要： PURPOSE:To completely eliminate abnormal machining and perform highly stabilized and efficient machining by judging the machining abnormality from the variance of no-load time and constituting so as to automatically switch downtime. CONSTITUTION:A variance calculating means 28 is provided for calculating the elapsed time during which the machining voltage is lower than a first refer ence voltage and higher than a second reference voltage. Based on the calculated variance of the elapsed time, abnormality of the machining condition is prediction-judged with a machining condition judging means 29. From the result of the prediction-judgment of the machining condition judgment means 29, ma chining interval condition is automatically controlled with a control means 30.

3. 发明专利

JPS642817A CURRENT GENERATOR 失效
公开(公告)号：JPS642817A
公开(公告)日：1989-01-06
申请号：JP15647687
申请日：1987-06-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWAZU HIDETOSHI
IPC分类号： B23H1/02
摘要： PURPOSE:To provide a constant ratio of consumption of an electrode by providing a current generating means for generating various current, a time setting means for setting current generating time and a wave form controlling means for generating the current of wave form changing continuously the size. CONSTITUTION:A counter 15 counts the number of pulses of pulse signal generated by a clock circuit 1 to generate the binary coded count value from the counter output terminals 15a-15d, and a decoder 16 generates the decoded output of counted value of counter 15 so that a central processing unit 21 memorizes time of generating discharge current. Next, a latch writing circuit 20 indicates the latch to latch circuits 19a-19d and a latch reading circuit 18 indicates the output from latch circuits 19a-19d to a data selector 17. Thus, since current having wave form changing continuously the size is generated, discharge current providing a constant consumption ratio of an electrode is obtained.

4. 发明专利

JPH0985537A ELECTRIC DISCHARGING MACHINE 失效
公开(公告)号：JPH0985537A
公开(公告)日：1997-03-31
申请号：JP24593395
申请日：1995-09-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWAZU HIDETOSHI
IPC分类号： B23H1/10 , B23H3/10 , B23H5/14 , B23H7/36
摘要： PROBLEM TO BE SOLVED: To make fine powder difficult to precipitate in a working tank and restrain the powder concentration of fine powder from reduction in a fine powder blended working fluid. SOLUTION: A working tank 1 is provided in the lower part with a working fluid outlet 61. Also, the working tank 1 is provided with a level height detecting means (lower limit float 107, upper limit float 109) to detect the level height of the working fluid in the working tank 1 and a flow rate controlling means (door 103 to open and close a small opening, door 105 to open and close a large opening) to variably control the flow rate of the working fluid ejected from the working fluid outlet 61 on the basis of the liquid height detected by the liquid height detecting means for maintaining the liquid height of the working fluid in the working tank 1 at a predetermined value.

5. 发明专利

JPH04201127A ELECTRIC DISCHARGE MACHINING METHOD 失效
公开(公告)号：JPH04201127A
公开(公告)日：1992-07-22
申请号：JP33041490
申请日：1990-11-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWAZU HIDETOSHI , SAITO NAGAO
IPC分类号： B23H1/10 , B23H9/12
摘要： PURPOSE:To simplify removal of a machining surface layer, softened through wire electric discharge, through stable machining by performing electric discharge of two members, on which wire electric discharge is applied in water and which form an electrode and a workpiece, in machining liquid mixed with powder. CONSTITUTION:The one of two members cut into a male and a female mold through wire electric discharge forms an electrode 10 and the other forms a workpiece 11 and electric discharge is applied on the two members in machining liquid 16 mixed with micropowder 17 of a metal or a semiconductor. In this case, an interpole distance between the electrode 10 and the workpiece 11 is increased and discharge is dispersed. Thereby, even when the electrode 10 and the workpiece 11 are both of iron, no short-circuiting occurs and stable machining is carried out and a machining surface layer softened through wire electric discharge can be simply removed.

6. 发明专利

JPH03251322A ELECTRICAL DISCHARGE MACHINE METHOD BY POWDER MIXED WORK LIQUID 失效
公开(公告)号：JPH03251322A
公开(公告)日：1991-11-08
申请号：JP4789490
申请日：1990-02-28
申请人： SAITO NAGAO , MORI NAOTAKE , MITSUBISHI ELECTRIC CORP
发明人： SAITO NAGAO , MORI NAOTAKE , KAWAZU HIDETOSHI
IPC分类号： B23H1/02 , B23H1/10 , B23H7/32
摘要： PURPOSE:To keep the distance between electrodes constant irrespective of the shapes and kinds and to improve the working accuracy by measuring the distance between electrodes properly under working, and controlling one or plural fluctuation factors between electrodes according to the difference in the distance between electrodes and a target distance between electrodes. CONSTITUTION:The body 2 to be worked is worked by interposing the work liquid 4 in which powders are mixed between the electrodes of an electrode 1 and the body 2 to be worked. In this case, the distance between electrodes is measured at proper time under working and one of plural fluctuation factors between electrodes are controlled according to the difference in the distance between electrodes and a target distance between electrodes. For example in the case of the distance between electrodes being small, an NC device 13 makes a target servovoltage value larger. Consequently, the distance between electrodes is held constant irrespective of the fluctuation factors between electrodes of a powder state of the powder grain size, density of the powder mixed work liquid, etc., the powder shape, the powder kind, etc., and the working accuracy is improved.

7. 发明专利

JPS645726A ELECTRIC DISCHARGE PROCESSING MACHINE 失效
公开(公告)号：JPS645726A
公开(公告)日：1989-01-10
申请号：JP16168487
申请日：1987-06-29
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWAZU HIDETOSHI , MAGARA TAKUJI
IPC分类号： B23H1/02
摘要： PURPOSE:To avoid abnormal processing by calculating the dispersion value of interpolar resistance dropping time as the passage time with a dispersion value calculator, judging thereupon eventual abnormal processing, and by changing over the electrode regular pullup condition automatically. CONSTITUTION:A Td measuring apparatus 12 measures the no-load time Td of each discharge waveform, and on the basis of the result therefrom a discharge waveform classifier 13 classifies discharge pulses into immediate discharge D1, normal discharge D2, and open D3, which is counted by counters 14-16, and according to the determined frequency a controller 18 makes servo feeding of electrode. On the other hand, the dispersion value of the interpolar resistance dropping time Tc of each discharge waveform measured by a Tc measuring apparatus 26 is calculated by a Tc dispersion value calculator 28 with the aid of a memory 27. A processing condition judging device 29 judges whether processing is normal upon the Tc dispersion value exceeding the specified level, and if abnormal, a controller 30 makes automatic changeover of the electrode regular pullup condition. This avoids abnormal processing certainly to accomplish stable and effective processing.

8. 发明专利

JP2008284649A Electrical discharge machining device 有权
标题翻译：电动放料加工设备
公开(公告)号：JP2008284649A
公开(公告)日：2008-11-27
申请号：JP2007132055
申请日：2007-05-17
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： MORITA KAZUNARI , AKUNE MITSUAKI , KAWAZU HIDETOSHI , OSATO TOSHIKAZU
IPC分类号： B23H7/14
摘要： PROBLEM TO BE SOLVED: To reduce inductance of a feeder wire for power supply without providing an additional secondary circuit in an electrical discharge machining device.
SOLUTION: This electrical discharge machining device is provided with an electrode 1 and a head 4 moving an electrode constituting section including an electrode mounting section 2 for holding the electrode 1 relatively to a workpiece 8, generating a desired electric potential difference between the opposed electrode 1 and the workpiece 8 to perform machining. An insulating spacer 3 is arranged to electrically insulate the electrode constituting section from the head 4. The device is provided with: the feeder wire 10 connected to feed an electrode side electric potential to the electrode constituting section by a power source 13 for the electrical discharge machining device; and the feeder wire 11 connected to feed a workpiece side electric potential to the head 4 by the power source 13, and the head 4 is electrically connected to the workpiece 8.
COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了减少用于供电的馈线的电感而不在放电加工装置中提供附加的二次电路。解决方案：该放电加工装置设置有电极1和头部4，移动电极构成部分，该电极构成部分包括用于相对于工件8保持电极1的电极安装部分2，从而产生期望的电位差对置电极1和工件8进行加工。绝缘间隔物3被布置成将电极构成部分与头部4电绝缘。该装置设置有：馈电线10，其通过用于放电的电源13将电极侧电位馈送到电极构成部分加工装置; 并且供电线11被连接以通过电源13将工件侧电位馈送到头部4，并且头部4电连接到工件8.版权所有（C）2009，JPO和INPIT

9. 发明专利

JPH0839354A ELECTRIC DISCHARGE DEVICE, AND MACHINING METHOD THEREBY 失效
公开(公告)号：JPH0839354A
公开(公告)日：1996-02-13
申请号：JP17692494
申请日：1994-07-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWAZU HIDETOSHI
IPC分类号： B23H1/10
摘要： PURPOSE:To make a fine powder difficult to settle in a T-slot during machining, easily wash away the fine powder after the machining or at the switching of a machining solution, and shorten the working time by providing the T-slot having an inclined bottom surface on a surface plate for placing a work. CONSTITUTION:A T-slot 22 having an inclined bottom surface provided on a surface plate for placing a work 20 makes a fine powder difficult to settle in the T-slot, and facilitates the washing of the fine powder. As an easy method, it is effective to make the groove of the T-slot 22 entirely deep. Further, it is also effective to spray a machining solution along the inclined bottom surface by an injection device. The fine powder fed by the T-slot 22 having the inclined bottom surface is preferably recovered in a powder tank by properly opening a discharge shutter. The inclination of the bottom surface of the T-slot 22 is set to, for example, about 2 deg.-7 deg., but the inclination is desirably determined according to conditions because the dimension of the T-slot 22 is changed in relation to the dimension and form of the work 22.

10. 发明专利

JPH02124248A CONTROL DEVICE ADAPTIVE FOR WORK MACHINE 失效
公开(公告)号：JPH02124248A
公开(公告)日：1990-05-11
申请号：JP27777888
申请日：1988-11-02
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAWAZU HIDETOSHI , OZAKI YOSHIO
IPC分类号： B23Q15/12 , B23H7/20 , G05B13/00
摘要： PURPOSE:To facilitate the addition and change of technique by taking the method describing to a knowledge memory part the plural techniques of working know how, etc., for realizing a preferable working state. CONSTITUTION:The working conditions achieving a preferable working state are found by synthesizing the plural results obtd. from the plural techniques for changing the working state by a working conditions control means 40, the working state and working conditions from a work machine. Accordingly, the adaptive control base on a complicated working know how can be realized and also the addition and change of the technique are facilitated by describing the technique independently. Also, a changing means 50 controls by changing automatically the technique of the working conditions control means 40 or working state discriminating means, so complicated adapting taking into consideration various factors within a wider range becomes possible.

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