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41. 发明专利

JP2000000721A WORKING FLUID CONTROL METHOD AND DEVICE FOR ELECTRIC DISCHARGE MACHINE 失效
公开(公告)号：JP2000000721A
公开(公告)日：2000-01-07
申请号：JP16371998
申请日：1998-06-11
申请人： MAKINO MILLING MACHINE
发明人： FUJITA KUNIO
IPC分类号： B23H1/10
摘要： PROBLEM TO BE SOLVED: To control working fluid filtering timing on the basis of the led-in numerical value objectively reflecting the degraded degree of a machining fluid in powder-mixed electric discharge machining. SOLUTION: In performing electric discharge machining of a workpiece 10 by applying pulse voltage while interposing a working fluid mixed with powder material, in a machining clearance formed between an electrode 12 and the workpiece 10, machining time is measured every machining condition, and the product of an average machining current, the measured machining time and a coefficient reflecting the degradation speed of the working fluid under the machining condition is computed every machining condition. The degraded degree of the working fluid is judged with the accumulated total value of the respective products of every machining condition as the degraded degree of the working fluid.

42. 发明专利

JP2921377B2 失效
公开(公告)号：JP2921377B2
公开(公告)日：1999-07-19
申请号：JP33266093
申请日：1993-12-27
申请人： MITSUBISHI DENKI KK
发明人： KAWAZU HIDETOSHI
IPC分类号： B23H1/10 , B23H7/36

43. 发明专利

JPH10315057A WIRE ELECTRIC DISCHARGE MACHINE 失效
公开(公告)号：JPH10315057A
公开(公告)日：1998-12-02
申请号：JP13126397
申请日：1997-05-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： IESAWA MASAHIRO , IMASHIRO AKIHIKO , SASAKI TSUTOMU , TANAKA MAKOTO , MORO TOSHIO
IPC分类号： B23H1/02 , B23H1/10 , B23H7/02 , B23H7/06 , B23H11/00
摘要： PROBLEM TO BE SOLVED: To uniformize a temperature of the whole machine main body by circulating fluid whose temperature is controlled so as to synchronize with a machine temperature, in hollow parts of an upper arm member and a lower arm member. SOLUTION: Heat is given and received between a work liquid 15 supplied to an upper arm member 18 and the upper arm member 18. Since the work liquid 15 is circulated in the upper arm member 18 at a flow rate kept at an almost temperature-controlled temperature, a temperature of the upper arm member 18 can almost synchronize with the temperature of the work liquid 15. Since the work liquid 15 supplied from a work liquid cooling system 13 is circulated also inside a lower arm member 7, the lower arm member 7 and the upper arm member 18 can be set at the almost same temperature. Therefore, a difference in a thermal elongation quantity generated by a temperature change between the lower arm member 7 and the upper arm member 18 can be reduced.

44. 发明专利

JPH10244424A CHIP SEPARATION DEVICE FOR ELECTRICAL DISCHARGE MACHINE 失效
公开(公告)号：JPH10244424A
公开(公告)日：1998-09-14
申请号：JP6210397
申请日：1997-02-28
申请人： MAKINO MILLING MACHINE
发明人： UEHARA TATSUO
IPC分类号： B23H1/10 , B03C1/00 , B03C1/02 , B23H7/36
摘要： PROBLEM TO BE SOLVED: To provide a compact chip separation device for an electrical discharge machine, which intensifies magnetic attraction force, accurately attract chips, and enables processing chips to be attracted by the whole surfaces of attracting discs. SOLUTION: Working oil including chips flows in a separation tank 5, chips are magnetically attracted by a plurality of attracting discs 11 rotated in the inside of the separation tank 5, and processing chips are thereby separated. Each attracting surface 11 is made out of a magnetic body, and a plurality of magnets 9 are built therein. Working oil from which chips are separated, flows in a clean tank 7 from the separation tank 5, and it is forwarded to the machining tank of an electrical discharge machine, and a working oil tank separately provided. Processing chips attracted by each attracting disc 11 are raked out by the fork part of a scraper 17 located at the downstream of each attracting disc 11 in the rotating direction, so that they are thereby discharged to a chip bucket 19.

45. 发明专利

JP2768194B2 失效
公开(公告)号：JP2768194B2
公开(公告)日：1998-06-25
申请号：JP246293
申请日：1993-01-11
IPC分类号： B23H1/10 , B23H7/02 , B23H7/36

46. 发明专利

JPH1015735A PURE WATER SUPPLING DEVICE FOR ELECTRIC DISCHARGE MACHINING 失效
公开(公告)号：JPH1015735A
公开(公告)日：1998-01-20
申请号：JP20270296
申请日：1996-06-28
申请人： KYORITSU KOGYO
发明人： FUJIMOTO TAISUKE
IPC分类号： B23H1/10 , C02F1/42
摘要： PROBLEM TO BE SOLVED: To extend a life of ion exchange resin used for an electric discharge machine using pure water. SOLUTION: A tank 1 having a sensor 1-1 and a branch pipe 4, having an ion exchange resin 7, first pump 3 and a bypass pipe line, and a first control box 8 controlling lower than electric conductivity at ordinary use machining time and having an output type electric conductivity meter 8-5 are provided. Adjusted pure water is normally stocked in the tank 1, a second control box 9, having a signal input/output device of required electric conductivity output from an electric discharge machine side as well as a flow regulating timer, a second pump 10 arranged in an electric discharge machine precipitation tank and a control valve 1-5 for releasing pure water of equal amount after exhausting pure water used in machining, are also provided. A control valve 1-2 with level sensor provided in a city water port is operated to supply raw water.

47. 发明专利

JP2691487B2 失效
公开(公告)号：JP2691487B2
公开(公告)日：1997-12-17
申请号：JP2562792
申请日：1992-01-18
IPC分类号： B23H1/10 , B23H7/02 , B23H11/00

48. 发明专利

JP2681817B2 失效
公开(公告)号：JP2681817B2
公开(公告)日：1997-11-26
申请号：JP30880188
申请日：1988-12-08
IPC分类号： B23H7/02 , B23H1/10 , B23H7/36

49. 发明专利

JPH09174336A ELECTRIC DISCHARGE MACHINE 失效
公开(公告)号：JPH09174336A
公开(公告)日：1997-07-08
申请号：JP34959395
申请日：1995-12-20
申请人： YASKAWA ELECTRIC CORP
发明人： MATSUDA HIROSHI
IPC分类号： B23H1/10 , B23H7/36
摘要： PROBLEM TO BE SOLVED: To provide a small electric discharge machine which is not restricted by the size of a workpiece and the direction of a machining surface and does not require a machining tank. SOLUTION: This device is composed of a machining table 7 having positioning mechanisms 4 and 5, a machining electrode 1 held by the positioning mechanisms 4 and 5, a workpiece 8 which is fixed on the machining table 7 and is oppositely arranged to the machining electrode 1 through a clearance and a machining medium filled in a clearance between the machining electrode 1 and the workpiece 8. In this case, the machining medium is formed of an insulating magnetic fluid 2, and a machining medium restraining means is provided to prevent the machining medium from leaking out of the clearance sandwiched between the machining electrode 1 and the workpiece 8, and the machining medium restraining means is fixed to the positioning mechanisms 4 and 5, and restrains the magnetic fluid 2 by a ring-shaped permanent magnet 3 arranged in the vicinity of the periphery of the machining electrode 1 through the clearance.

50. 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.

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