专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH11114723A ELECTRO-DISCHARGE MACHINING UNIT AND METHOD THEREOF 失效
公开(公告)号：JPH11114723A
公开(公告)日：1999-04-27
申请号：JP28212297
申请日：1997-10-15
申请人： MITSUBISHI ELECTRIC CORP
发明人： WADA KOETSU , YOSHIDA MANABU
IPC分类号： B23H1/02
摘要： PROBLEM TO BE SOLVED: To perform such electro-discharge machining as being high in the plane accuracy of a machined bottom face by avoiding a deeper cavity than the steady depth at a machining start position. SOLUTION: In this electro-discharge machining unit which impresses a pulsative voltage in space between a tool electrode 1 and a workpiece W, composing the Z-axial feed to compensate a longitudinal consumable quantity of the tool electrode 1 with the X Y plane feed, and 3-dimensional control is carried out, thereby machining the desired 3-dimensional form, it is provided with a discharge detecting means 10 detecting a fact that an electric discharge is generated in space between the tool electrode 1 and the workpiece W, a storage means 11 storing an approach path making the tool electrode 1 come close to the workpiece W, a machining form path for securing a desired machining force and an electric condition of electro-discharge machining, and a control means 12 which performs the electro-discharge machining at once on the basis of the machining form path being stored in the storage means 11 if generation of the electric discharge is detected by the discharge detecting means 10 in a process where the tool electrode 1 gets nearer to the workpiece W on the basis of the approach path stored in the storage means 11.

2. 发明专利

JPH11320265A WORK SUPPORT DEVICE AND ELECTRIC DISCHARGE MACHINING METHOD FOR ELECTRIC DISCHARGE MACHINING DEVICE USING THE WORK SUPPORT DEVICE 失效
公开(公告)号：JPH11320265A
公开(公告)日：1999-11-24
申请号：JP12304298
申请日：1998-05-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： WADA KOETSU , HAISHI YUICHIRO
IPC分类号： B23H7/00 , B23H7/02
摘要： PROBLEM TO BE SOLVED: To simplify the parallel drawing of each work and the positioning work of machining position by providing a reference unit on crossing lines of each reference surface provided in parallel with a flat surface formed in a flat surface part of a work support unit and separated from the flat surface at a preset distance. SOLUTION: In the case of housing a rectangular parallelopiped work 10 in a frame of a frame-like work support unit 31 as a work support unit, the rectangular parallelopiped work 10 is fixed to a work support device 30 by fastening each screw 14 to be threaded with screw holes 35 36 so that side surfaces of the rectangular parallelopiped work 10 pressure-contact with both fitting reference surfaces 33-34. The rectangular parallelopiped work 10 is received and supported by the reference surfaces 33-34 and fixed to the work support device 30 by fastening each screw 14 to be threaded with the screw holes 35-36.

3. 发明专利

JPH09239621A ELECTRIC DISCHARGE MACHINING DEVICE AND DISCHARGE MACHINING METHOD 失效
公开(公告)号：JPH09239621A
公开(公告)日：1997-09-16
申请号：JP4740296
申请日：1996-03-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： WADA KOETSU
IPC分类号： B23H1/02 , B23H1/08 , B23H1/10 , B23H7/18 , B23H7/20
摘要： PROBLEM TO BE SOLVED: To provide an electric discharge machining device in which the deterioration of the mirror surface property of the machining surface owing to the reduction of the powder mixing concentration is prevented, so as to obtain a desired mirror surface, by detecting the reduction of the powder mixing concentration in a working liquid automatically, and changing the feeding of the powder substance and the machining condition when the reduction of the powder mixing concentration is detected. SOLUTION: The work finishing position at the K-1 stage detected by a work finishing detecting device 31, and the work starting position at the K stage detected by a work starting position detecting device 30, are compared by a machining position comparing device 32, and when the difference is less than a specific value, a signal is fed to a machining condition converting device 33 and a powder control valve 35, and the machining is carried out by feeding a powder substance in a working liquid, as well as the machining condition is changed.

4. 发明专利

JPH08252725A ELECTRIC DISCHARGE MACHINING METHOD AND DEVICE THEREFOR 失效
公开(公告)号：JPH08252725A
公开(公告)日：1996-10-01
申请号：JP5857795
申请日：1995-03-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： WADA KOETSU
IPC分类号： B23H7/28
摘要： PURPOSE: To provide an electric discharge machining method in which a working time until an electrode reaches a prescribed position is measured, and a working part being left unworked due to reduction of the leught of a working clearane is prevented by comparing the time with a set time, and to provide a device thereof. CONSTITUTION: A comparison means 20 comparing an actual working time until an electrode 1 reaches a prescribed position with a prescribed estimated time is provided, and when the actual working time until the electrode reaches the prescribed position is smaller than the set estimated time, the comparison means 20 outputs a signal to a control means 4, and the control means 4 outputs a prescibed quantity of additional working command set by a prescribed quantity setting means 24, so as to execute the additional working.

5. 发明专利

JPH0852619A DEVICE AND METHOD FOR ELECTRIC DISCHARGE MACHINING 失效
公开(公告)号：JPH0852619A
公开(公告)日：1996-02-27
申请号：JP18598094
申请日：1994-08-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： WADA KOETSU
IPC分类号： B23H1/02
摘要： PURPOSE:To improve the machining precision by determining the working area of a workpiece on the basis of voltage generating time, determining the working time on the basis of this working area and the working time per unit working area to control the machining of the workpiece. CONSTITUTION:When an electric discharge machining is performed under working conditions of n-stages, the working conditions are switched by a control device 10. In this case, at the n-1 stage working, a working area S is determined by a working area arithmetic device 25 on the basis of the n-1 stage working space distance preset in the working area arithmetic device 25 and the voltage build up time from a measuring circuit 24. On the basis of the working time (t) per unit working area from the n-1 stage working surface roughness to the n-stage working surface roughness, which is preset in a working time input device 19, and the calculated working area S, the ut-stage working time Tn (Tn=t.S) is arithmetically determined by a working time arithmetic device 20. Thereafter, this calculation result Tn is set in a working time setting device 12 as the n-stage working time.

6. 发明专利

JPH07237040A ELECTRIC DISCHARGE MACHINING METHOD AND ELECTRIC DISCHARGE MACHINING DEVICE USING NONCOMBUSTIBLE MACHINING LIQUID 失效
公开(公告)号：JPH07237040A
公开(公告)日：1995-09-12
申请号：JP2559994
申请日：1994-02-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： WADA KOETSU
IPC分类号： B23H1/02 , B23H1/10
摘要： PURPOSE:To prevent unstable electric discharge caused by the lowering of impedance between electrodes so as to enable stable electric discharge machining by feeding noncombustible machining liquid, raised in resistivity, between electrodes at the time of detecting self-oscillation caused between the electrodes. CONSTITUTION:A control valve switching means 13 opens control valves 20b, 20c so as to feed noncombustible machining liquid 6 in a machining liquid tank to a resistivity control device 10 through a machining liquid feed path 12b. In the resistivity control device 10, the noncombustible machining liquid 6 is heightened in resistivity and fed between electrodes through a machining liquid feed path 12. Impedance between the electrodes thereby rises, and bath voltage is not lowered so as to enable stable electric discharge. Since noncombustible machining liquid 6 is fed to the resistivity control means 10 only when self- oscillation is generated to make electric discharge unstable, the service life of ion exhange resin, for instance, which is the material for raising resistivity in the resistivity control means 10, can be prolonged.

7. 发明专利

JPH079257A ELECTRIC DISCHARGE MACHINE 失效
公开(公告)号：JPH079257A
公开(公告)日：1995-01-13
申请号：JP16272593
申请日：1993-06-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： GOTO AKIHIRO , WADA KOETSU , OZAKI YOSHIO
IPC分类号： B23H1/02 , B23H7/16 , B23H11/00
摘要： PURPOSE:To suppress attachment of tar by furnishing a processing pulse control device to impress a positive polarity voltage in a pause time of pulsed voltage in the reversed polarity, giving a dischargeable value to the current limiting impedance at the time with reversed polarity, and also giving a value unlikely to generate discharging to the current limiting impedance at the time with positive polarity. CONSTITUTION:The amperage on the reversed polarity side to perform processing is changed over by changing over a current limiting resistance 410 for reversed polarity by a current limiting resistance changeover switch 412 for reversed polarity. When an insulative liquid is used, a positive polarity side current limiting resistance 411 is fixed to a large value exceeding approx. 5OMEGA so that the influence of positive polarity discharging is lessened, and also slight discharging takes place in positive polarity, which ensures that a good surface quality is generated on the work processed. In case insulative liquid is used as processing liquid, there is no risk of current leak unless discharge is generated even if a voltage is impressed to the inter-polar gap, so that it is possible to fix the positive polarity side current limiting resistance 411 to a large value, and there is no need to make changing-over.

8. 发明专利

JPH0647624A ELECTRIC DISCHARGE MACHINING DEVICE 失效
公开(公告)号：JPH0647624A
公开(公告)日：1994-02-22
申请号：JP20390792
申请日：1992-07-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： WADA KOETSU
IPC分类号： B23H1/08 , B23H1/10
摘要： PURPOSE:To provide an electric discharge machining device by which working liquid prepared to an appropriate electric conductivity according to processing conditions can be supplied in a working clearance quickly. CONSTITUTION:Working fluid 5 in a second tank 8 from which processing sludge 6 is removed, is so controlled as to be supplied in a working clearance via conduits 22, 25 by a control means 19 in roughing and when electric conductivity of the working fluid 5 in the second tank 8 is a set level of a first conductivity discrimination means 15 or more, the working fluid 5 is supplied to the processing clearance, while returning the working liquid treated in an ion exchange means 17a by the control means 19 to the second tank 8 via conduits 22a, 24. In finishing, the control means 19 controls the working liquid 5 treated in the ion exchange means 17a so as to supply it to the working clearance via conduits 23a, 25.

9. 发明专利

JPH10138049A ELECTRIC DISCHARGE MACHINE AND ELECTRIC DISCHARGE MACHINING METHOD 失效
公开(公告)号：JPH10138049A
公开(公告)日：1998-05-26
申请号：JP29896996
申请日：1996-11-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： YOSHIDA MANABU , WATANABE HISANORI , WADA KOETSU
IPC分类号： B23H7/20 , B23H7/26
摘要： PROBLEM TO BE SOLVED: To perform electric discharge machining by which plane accuracy of a machining bottom surface is enhanced by controlling a position of a tool electrode on the basis of data on a stored maching shape path and an electrode axis directional feed quantity to a tool electrode plane directional movement at approach time or after approach. SOLUTION: A machining condition storage means 12 of an NC device 11 is provided with a machining shape path storage part 12a, an oblique approach starting height storage part 12b to store data set in a Z axis directional position of a tool electrode at approach starting time, an oblique approach XY moving distance storage part 12c to store data on an XY directional moving distance of the electrode at approach starting time, a machining condition table part 12d and a Z axis correction quantity storage part 12e to store a Z axis correction quantity with respective machining conditions being a Z axis directional feed quantity. A position of the electrode is controlled on the basis of data on a machining shape path and a Z axis directional feed quantity in the XY axis direction of the tool electrode at approach time or after approach by a tool electrode position control means 13.

10. 发明专利

JP2590633B2 失效
公开(公告)号：JP2590633B2
公开(公告)日：1997-03-12
申请号：JP18984491
申请日：1991-07-30
申请人： MITSUBISHI ELECTRIC CORP
发明人： WADA KOETSU , MAGARA TAKUJI
IPC分类号： B23H1/10 , B23H7/36

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式