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1. 发明专利

JPH03136726A SERVO DEVICE FOR ELECTRIC DISCHARGE MACHINE 失效
公开(公告)号：JPH03136726A
公开(公告)日：1991-06-11
申请号：JP27565789
申请日：1989-10-23
申请人： SODICK CO LTD , TOYOTA MOTOR CORP
发明人： KANEKO YUJI , NABEKURA NOBUYOSHI , ARAKI TAKAHIRO
IPC分类号： B23H1/02 , B23H7/30
摘要： PURPOSE:To enhance both consumption and process speed by providing such an arrangement that a predetermined spindle is moved by a servo-motor and a piezoelectric element, and the predetermined spindle is moved backward or forward by the servo-motor when the displacement of the piezoelectric element reaches its upper or lower limit value. CONSTITUTION:When an averaged gap voltage becomes lower than a lower limit voltage, a detecting circuit 60 delivers first and second signals both of which are '0'. When an NC device 70 detects these signals, a reversing instruction is delivered to a motor 10. Accordingly, the servo-motor 10 is reversed so as to return an electrode E. Thereafter, when the averaged gap voltage becomes higher than the lower limit value, the output voltage of a piezoelectric element drive circuit 50 gradually increases, and accordingly, the displacement of a piezoelectric element 20 is turned into a positive direction. At this time, the detecting circuit 60 delivers the first and second signals which are '0' and '1', respectively, and accordingly, the servo-motor 10 comes to a stop.

2. 发明专利

JPH04141323A FORMING DEVICE FOR FINE ELECTRODE 失效
公开(公告)号：JPH04141323A
公开(公告)日：1992-05-14
申请号：JP26345590
申请日：1990-10-01
申请人： SODICK CO LTD
发明人： NABEKURA NOBUYOSHI , ARAKI TAKAHIRO
IPC分类号： B23H7/02 , B23H1/04 , B23H7/22 , B23H9/14
摘要： PURPOSE:To prevent bending of a fine part subjected to an electric discharging in a bar-like electrode, by providing a piezoelectric element which keeps at a desired value the gap of the mutual wire electrodes interposing the bar-like electrode between the bar-like electrode and a case body via the wire electrode. CONSTITUTION:Wire electrodes 11, 12 are travelled in the different direction to each other by interposing a bar-like electrode 40, and piezoelectric elements 31, 32 are provided between the bar-like electrode 40 and a case body 20 via the wire electrodes 11, 12 thereof. The gap of the mutual wire electrodes 11, 12 interposing the bar-like electrode 40 is kept at a desired value by the piezoelectric elements 31, 32. An electric discharging pulse is then fed between the bar-like electrode 40 and wire electrodes 11, 12 while rotating the bar like electrode 40. Consequently bending of the fine part subjected to electric discharging in the bar-like electrode 40 can be prevented.

3. 发明专利

JPS63123638A FILTER DEVICE OF ELECTRIC DISCHARGE MACHINE 失效
公开(公告)号：JPS63123638A
公开(公告)日：1988-05-27
申请号：JP26868986
申请日：1986-11-13
申请人： SODICK CO LTD
发明人： TAKAHASHI NOBUYUKI , NABEKURA NOBUYOSHI
IPC分类号： B23H7/36 , B01D29/11 , B01D37/04
摘要： PURPOSE:To shorten repeated service time of a filter device and enhance the filtrating function by sensing eventual drop of the filtrating function, applying compressed air to the output side of the filtrating member, and thereby shaking off sludge attached to the input side. CONSTITUTION:When clog of a filtrating member 5 causes emission of a sensing signal DS from a rate-of-flow sensor 15 to allow a control device 13 to judge that the amount of processing liquid collected to a tank 12 has decreased below the reference level, control signals C1, C2 shut solenoid valves 14, 17, while control signals C3. C4 open solenoid valves 20, 23. Compressed air from a compressed fluid source 21 is supplied to a bottom chamber 2b, and sludge 22 attached to the top chamber 2a of the abovementioned filtrating member 5 is dropped to eliminate clogging, and now the compressed air intruded into the top chamber 2a through the filtrating member 5 is released to the atmosphere from a pipe 19. This action is restituted after an implementation for a certain while, and filtration of the processing liquid is performed again in good performance.

4. 发明专利

JP2006167893A Electrode for electric discharge machining and electric discharge machining method 有权
标题翻译：电动放电电极和放电加工方法
公开(公告)号：JP2006167893A
公开(公告)日：2006-06-29
申请号：JP2004367128
申请日：2004-12-20
申请人： Sodick Co Ltd , 株式会社ソディック
发明人： NABEKURA NOBUYOSHI , SANO SADAO
IPC分类号： B23H1/06 , C22C26/00
CPC分类号： C22C26/00 , B22F2003/241 , B22F2003/247 , B22F2998/10 , B23H1/06 , B22F3/15 , B22F3/24
摘要： PROBLEM TO BE SOLVED: To provide an electrode for electric discharge machining devised capable of carrying out the electric discharge machining by sharply decreasing electrode consumption even under an electric machining condition where a carbon layer is hardly formed on an electrode surface and an electric discharge machining method.
SOLUTION: The electrode for the electric discharge machining is formed of a sintered body made of a continuous phase made of an electrically-conductive region 3 and a dispersed phase made of fine polycrystalline diamonds 2 dispersed on it, and consequently, it is possible to carry out the electric discharge machining by making rough machining and finishing machining into reversed polarity by sharply decreasing the electrode consumption under various electric machining conditions. Additionally, the electric discharge machining method is a method to discharge-machine a workpiece by the electrode for the electric discharge machining formed of the sintered body made of the dispersed phase made of the continuous phase made of the electrically-conductive region and the fine polycrystalline diamonds dispersed on it and a machining electric current supplied from an electric discharge electric power source circuit connected in the reversed polarity to the workpiece. Consequently, it is possible to carry out the electric discharge machining in high working performance by sharply decreasing the electrode consumption even under the electric machining condition of either of negative polarity connection and normal polarity connection.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种放电加工用电极，即使在电极表面上难以形成碳层的电加工条件下，也可以通过急剧降低电极消耗进行放电加工，放电加工方法。解决方案：用于放电加工的电极由由导电区域3制成的连续相和由分散在其上的精细多晶金刚石2制成的分散相的烧结体形成，因此，可以通过在各种电加工条件下急剧减少电极消耗，通过粗加工和精加工成相反的极性来进行放电加工。另外，放电加工方法是由用由导电区域形成的连续相制成的分散相的烧结体形成的放电加工用电极和微细多晶体的放电加工方法分散在其上的金刚石和从反向极性连接的放电电源电路向工件提供的加工电流。因此，即使在负极性连接和正极连接两者的电加工条件下，也可以通过急剧降低电极消耗来进行高工作性能的放电加工。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JPS63123639A FILTER DEVICE OF ELECTRIC DISCHARGE MACHINE 失效
公开(公告)号：JPS63123639A
公开(公告)日：1988-05-27
申请号：JP26869086
申请日：1986-11-13
申请人： SODICK CO LTD
发明人： TAKAHASHI NOBUYUKI , NABEKURA NOBUYOSHI
IPC分类号： B23H7/36 , B01D29/11 , B01D37/04
摘要： PURPOSE:To increase the filtrating capacity substantially by performing processing liquid filtrating action and the sludge scrape-off action alternately at certain intervals, and thereby obtaining efficient filtration of the processing liquid without causing clog to the filtrating member. CONSTITUTION:If a control device 13 judges that a certain specified period of time has passed with processing liquid filtrating action made by a filtrating member 5, solenoid valves 14, 17 are closed by control signals C1, C2, while solenoid valves 20, 23 opened by control signals C3, C4. Compressed air from a compressed fluid source 21 is supplied to the bottom chamber 2b, and sludge 22 attached to the top chamber 2a side of filtrating member 5 is scrapped off to eliminate clogging, and now the compressed air intruded in the top chamber 2a via the filtrating member 5 is released to the atmosphere through a pipe 19. Action to scrape off the sludge 22 is implemented for a certain period of time, followed by restitution to the condition for filtration of processing liquid, which will now be conducted with good performance.

6. 发明专利

JPH071238A ELECTRIC DISCHARGE MACHINING METHOD AND DEVICE THEREFOR 失效
公开(公告)号：JPH071238A
公开(公告)日：1995-01-06
申请号：JP17371993
申请日：1993-06-21
申请人： SODICK CO LTD
发明人： NABEKURA NOBUYOSHI , YAMADA KUNIHARU , TAJIMA SATORU
IPC分类号： B23H1/02
摘要： PURPOSE:To enable products stagnating between electrodes to be quickly eliminated by applying, between an electrode and an article to be processed, an impulse current having a value sufficiently larger than the discharge current to flow during the rest of a pulse-like applied voltage according to the electric discharging state. CONSTITUTION:In a main power circuit control means 14, the pulse rest period corresponds to the time set by a processing condition control means 50 in the normal electric discharging. When any abnormal electric discharge is detected, the main power circuit control means 14 sets a period until the next discharge voltage is applied, namely the rest period of the pulse, to a period larger than the set rest period. And, when the abnormal electric discharge is detected, an auxiliary power circuit control means 32 outputs the gate signal of an auxiliary power circuit 22, turns on/off a switching transistor 28 and allows flow of an impulse current having a sufficiently high value in relation to the discharge current between an electrode 2 and a work 4 during the rest time continuing from the falling of the abnormal discharge current.

7. 发明专利

JPH06190632A ELECTRIC DISCHARGE MACHINING METHOD AND ITS DEVICE 失效
公开(公告)号：JPH06190632A
公开(公告)日：1994-07-12
申请号：JP35838192
申请日：1992-12-25
申请人： SODICK CO LTD
发明人： NABEKURA NOBUYOSHI , YAMADA KUNIHARU , TAJIMA SATORU
IPC分类号： B23H1/02
摘要： PURPOSE:To control machining properly by superimposing a sufficiently large impulse current on a discharge current at the rising time or the falling-down time of the discharge current. CONSTITUTION:In electrical discharge machining, in which a pulse discharge current flows to carry out electrical discharge machining while discharge is generated intermittently in the gap G between a tool electrode 4 and a work piece 6, a discharge condition between the electrode 4 and the work piece 6 is detected so as to be determined whether it is an abnormal discharge or not. On the basis of this determination, a sufficiently large impulse current is superimposed at the rising time or the falling-down time of the discharge current. In this way, consumption in the electrode is suppressed without deteriorating a machining speed and the like.

8. 发明专利

JPH04304924A ADAPTIVE CONTROL METHOD FOR WORK CURRENT IN ELECTRIC DISCHARGE MACHINE AND DEVICE THEREFOR 失效
公开(公告)号：JPH04304924A
公开(公告)日：1992-10-28
申请号：JP9471591
申请日：1991-04-01
申请人： SODICK CO LTD
发明人： KANEKO YUJI , NABEKURA NOBUYOSHI
IPC分类号： B23H1/02 , B23H7/16 , B23H7/20
摘要： PURPOSE:To shorten a work time and to improve the accuracy of the work face of a workpiece by executing the optimum control of the electric discharging current interfaced with the state with the detection level and detection time of an electric discharging state being changed on each work conditions. CONSTITUTION:A step changing the detection area of a work current according to saveral work conditons for which an area change means (40) differs, a step that a current detection means (7) detects the wave height value of the work current inside the detection area changed by this step, a step discriminating the electric discharging state in the interval based on the work current wave height value detected at the step of the former step by a discriminating means (11) and a step controlling the work current in the optimum value by a current control means (30), are equipped.

9. 发明专利

JPH0468083B2 失效
公开(公告)号：JPH0468083B2
公开(公告)日：1992-10-30
申请号：JP22132884
申请日：1984-10-23
申请人： SODICK CO LTD
发明人： NABEKURA NOBUYOSHI , SHODA KAZUO
IPC分类号： B23H1/02

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