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61. 发明授权

EP0286685B1 METHOD OF CONTROLLING WIRE CUT DISCHARGE MACHINING 失效
标题翻译：控制线切割加工的方法
公开(公告)号：EP0286685B1
公开(公告)日：1992-04-29
申请号：EP87905665.3
申请日：1987-09-01
申请人： FANUC LTD.
发明人： OBARA, Haruki
IPC分类号： B23H7/02 , B23H7/04
CPC分类号： B23H7/065
摘要： An apparatus for controlling wire cut discharge machining which enables consistent linear machining, corner machining and arc machining yet maintaining increased precision. A numerical controller (10) enables the linear machining to be carried out under optimum electric conditions. At the time of corner machining or arc machining, the numerical controller (10) turns on or off the relay contacts (Ra1 to Ra4, Rb1 to Rb4) and controls the on-off duty ratio of a pulse oscillator (9) in order to establish the optimum value of each of capacitor charing voltage, discharging voltage, and charging and discharging times read out from a memory (14) in accordance with the calculated corner angle or the calculated radius of an arc.

62. 发明授权

EP0229186B1 WIRE CUT ELECTRIC SPARK MACHINE 失效
标题翻译：电线切割电机
公开(公告)号：EP0229186B1
公开(公告)日：1991-09-04
申请号：EP86903617.8
申请日：1986-06-24
申请人： FANUC LTD.
发明人： OBARA, Haruki
IPC分类号： B23H7/10 , B23H11/00
CPC分类号： B23H7/101
摘要： A wire cut electric spark machine consisting of a tapering table assembly (6a) which is fixed to the lower end of a vertical column (5a) provided above a work table (T) movable in the directions of X- and Y-axes crossing each other at right angles in a horizontal plane, and which is movable in the directions of U- and V-axes crossing each other at right angles in a horizontal plane which is parallel to the horizontal plane including the X- and Y-axes; a wire guide (7a) attached to the tapering table assembly (6a), having a nozzle for ejecting working fluid and adapted to guide a wire electrode (9); and balancing means (22, 22a) adapted to apply a downward reaction, which is against reaction force of the ejected working fluid, to the tapering table assembly (6a), owing to a fluid pressure of a branching flow of the working fluid supplied to the nozzle for ejecting the working fluid of the wire guide (7a).

63. 发明授权

EP0151645B1 ELECTRIC DISCHARGE MACHINING APPARATUS 失效
标题翻译：电动放料加工设备
公开(公告)号：EP0151645B1
公开(公告)日：1990-05-23
申请号：EP84902824.6
申请日：1984-07-20
申请人： FANUC LTD.
发明人： OBARA, Haruki , OKUYAMA, Yuji
IPC分类号： B23H7/04
CPC分类号： B23H7/101 , B23H7/04
摘要： A wire-cut electric discharge machining apparatus causes an electric discharge between a wire and the work while supplying a working fluid to the area therebetween, thereby machining the work. The apparatus has a means for controlling the flow rate of the working fluid. When the machining electric discharge energy is decreased due to a reduction in the machining speed at a corner machining portion or circular machining portion, the flow rate, that is, the pressure of the working fluid is reduced, thereby preventing vibration of the wire.

64. 发明授权

EP0124625B1 ELECTRIC DISCHARGE MACHINING CONTROL CIRCUIT 失效
标题翻译：电动放料加工控制电路
公开(公告)号：EP0124625B1
公开(公告)日：1990-03-21
申请号：EP83903571.4
申请日：1983-11-11
申请人： FANUC LTD.
发明人： OBARA, Haruki , IZUMIYA, Shunzo
IPC分类号： B23H1/02
CPC分类号： B23H1/024
摘要： In this electric discharge machining control circuit for a wire-cut spark erosion machine, the reference voltage of a short circuit judgement circuit, which judges whether there is a short circuit between a wire electrode and a workpiece by comparing the working voltage applied between the wire electrode and the workpiece with a reference voltage, is lowered during a second cutting operaiton, thereby enabling the electric discharge machining to be effected at a lower average working voltage. An interval signal, which limits the output of oscillation pulses for turning on and off a switching element in a discharge circuit, is blocked during the second cutting operation.

65. 发明公开

EP0354967A1 GAP VOLTAGE DETECTOR FOR WIRE CUT ELECTRIC DISCHARGE MACHINES 失效
标题翻译：线切割机用间隙电压检测仪
公开(公告)号：EP0354967A1
公开(公告)日：1990-02-21
申请号：EP89901745.3
申请日：1989-01-30
申请人： FANUC LTD
发明人： OBARA, Haruki , IZUMIYA, Syunzo
IPC分类号： B23H7/02
CPC分类号： B23H7/04
摘要： This invention provides a gap voltage detector for wire cut electric discharge machines, which is capable of accurately detecting a gap voltage between a wire electrode and a work while eliminating the influence by variations in the position of electric discharging. An operational amplifier (11) of the gap voltage detector is adapted to receive via one input terminal thereof the sum of a voltage between an upper electric member (4) and a work (3), which is detected by voltage dividing circuits (R11, R12), and a voltage between a lower electric member (5) and the work (3), which is detected by voltage dividing circuits (R21, R22), and via the other input terminal thereof and through variable resistors, (RV1, RV2) an output corresponding to a differentiation value of a discharge current and sent out from a detecting coil (10), and an output corresponding to a discharge current from an integrating circuit (12), into which an output from the detecting coil (10) is inputted, as signals for compensating for a voltage drop ascribed to the wire resistance and inductance between the two electric members (4), (5), the sum of these voltages being compensated by the voltage drop, the resultant signal being outputted as a signal representative of a gap voltage.
摘要翻译：本发明提供了一种线切割放电加工机的间隙电压检测器，它能够在消除放电位置变化的影响的同时，准确地检测线电极和工件之间的间隙电压。间隙电压检测器的运算放大器（11）适于通过其一个输入端子接收由分压电路（R11，R11）检测到的上电部件（4）和工件（3） R12）以及由分压电路（R21，R22）检测到的下部电气元件（5）与工件（3）之间的电压，以及通过其另一个输入端子和可变电阻器（RV1，RV2））与从检测线圈（10）输出的放电电流的微分值相对应的输出和与来自积分电路（12）的放电电流相对应的输出，来自检测线圈（10）的输出被输入到该积分电路（12）作为用于补偿由两个电气构件（4），（5）之间的导线电阻和电感引起的电压降的信号，这些电压的总和由电压降补偿，所得到的信号作为代表间隙电压的信号。

66. 发明公开

EP0351436A1 DISCHARGE POSITION DETECTOR IN A WIRE ELECTRODE DISCHARGE MACHINE 失效
标题翻译： ENTLADUNGSDETEKTOR IN EINER DRAHTFUNKEROSIONSVORRICHTUNG。
公开(公告)号：EP0351436A1
公开(公告)日：1990-01-24
申请号：EP88909369.6
申请日：1988-10-29
申请人： FANUC LTD.
发明人： OBARA, Haruki
IPC分类号： B23H7/02
CPC分类号： B23H7/04
摘要： A discharge position detector in a wire electrode discharge machine capable of correctly detecting the discharge position with a relatively simple constitution. A differential amplifier (11) outputs a voltage corresponding to the difference in the output voltages between two coils (9, 10) that represent differentiated values of discharge currents flowing into the upper and lower current-carrying elements (4, 5), respectively. The output voltage from the differential amplifier is divided in a divider (13) by an output voltage of an adder (12) that represents a differentiated value of the total discharge current, and the divider produces a voltage that represents a discharge position. The output of the divider is sampled and held every time when a machining pulse is applied across the machining gap from a power source of discharge machining (3), and is then compared with reference voltages in comparators (C1 to C3). When the discharge position changes little when the next machining pulse is applied, a NOR gate (16) connected to the comparators produces a signal that indicates the generation of concentrated discharge.
摘要翻译：一种线电极放电机中的放电位置检测器，其能够以相对简单的结构正确地检测放电位置。差分放大器（11）输出对应于表示分别流入上，下载流元件（4,5）的放电电流的微小值的两个线圈（9,10）之间的输出电压差的电压。来自差分放大器的输出电压通过表示总放电电流的微分值的加法器（12）的输出电压分成分频器（13），分压器产生表示放电位置的电压。每当加工间隙从放电加工电源（3）施加加工脉冲时，分压器的输出被采样和保持，然后与比较器（C1至C3）中的参考电压进行比较。当施加下一个加工脉冲时放电位置变化较小时，连接到比较器的NOR门（16）产生指示集中放电产生的信号。

67. 发明公开

EP0340308A1 LARGE TAPER MACHINING METHOD USING WIRE ELECTRIC DISCHARGE MACHINE 失效
标题翻译：采用电火花放电加工的大型锥形加工方法
公开(公告)号：EP0340308A1
公开(公告)日：1989-11-08
申请号：EP88908379.6
申请日：1988-09-28
申请人： FANUC LTD.
发明人： OBARA, Haruki , TAKASHIMA, Hidenori Fanuc Dai-3 Vira-karamatsu
IPC分类号： B23H7/06 , B23H7/08
CPC分类号： B23H7/08 , B23H7/06
摘要： This invention provides a large taper machining method using a wire electric discharge machine which can carry out a large taper machining for a taper angle of 20° or larger stably and with high accuracy and can also improve surface smoothness of the workpiece. When electric discharge machining including machining of a large taper with a taper angle of 20° or larger is executed, a wire electrode (5) consisting of a soft electrode wire for discharge machining having a tensile strength of up to 46 kg/mm² is used. The wire electrode bent greatly at wire support portions of upper and lower wire guides (8, 12) is thereafter easily transformed into a straight line and forms a linear portion between both wire guides, thereby stabilizing machinability and improving machining accuracy and surface smoothness of the workpiece.
摘要翻译：本发明提供一种使用电火花线切割机的大锥度加工方法，其能够稳定且高精度地进行20°以上的锥角的大锥度加工，并且还能够提高工件的表面平滑性。当执行包括加工锥角为20°或更大的大锥度的放电加工时，使用由用于放电加工的软电极线构成的线电极（5），其具有高达46kg / mm 2的拉伸强度。在上部和下部线引导件（8,12）的线支撑部分处大幅弯曲的线电极此后易于变换成直线并且在两个线引导件之间形成线性部分，由此稳定可机加工性并提高加工精度和表面平滑度工件。

68. 发明公开

EP0286685A1 METHOD OF CONTROLLING WIRE CUT DISCHARGE MACHINING 失效
标题翻译： STEUERUNGSVERFAHRENFÜRDIE DRAHTSCHNEIDEFUNKENEROSIONSBEARBEITUNG。
公开(公告)号：EP0286685A1
公开(公告)日：1988-10-19
申请号：EP87905665.3
申请日：1987-09-01
申请人： FANUC LTD
发明人： OBARA, Haruki
IPC分类号： B23H7/02 , B23H7/04
CPC分类号： B23H7/065
摘要： An apparatus for controlling wire cut discharge machining which enables consistent linear machining, corner machin- lng and arc machining yet maintaining increased precision. A numerial controller (10) enables the linear machining to be carried out under optimum electric conditions: At the time of corner machining or arc machining, the numerical controller (10) turns on or off the relay contacts (Ra1 to Ra4, Rb1 to Rb4) and controls the on-off duty ratio of a pulse oscillator (9) in order to establish the optimum value of each of capacitor charging voltage, discharging voltage, and charging and discharging times read out from a memory (14) in accordance with the calculated corner angle or the calculated radius of an arc.
摘要翻译：排线加工控制图。包括：存储用于加工不同角度的角的电气条件的第一存储器， - 存储不同电弧半径的电气条件的第二存储器，角角计算电路， - 判断何时进行角加工的单元， - 单元其响应于来自NC单元的命令来计算电弧半径;以及控制单元，其在进行拐角或电弧加工时读取第一和第二存储器内容，并且从线性加工的电气条件改变电气条件，例如通过打开和关闭电源供给继电器触点（Ra，Rb）并控制脉冲振荡器的占空比，以便根据计算的电弧和拐角建立从存储器读出的最佳电容充电和放电时间。

69. 发明授权

EP0122940B1 SYSTEM FOR SETTING WIRE-CUT ELECTRICAL DISCHARGE MACHINING CONDITIONS 失效
标题翻译：用于设置线切割放电加工条件的系统
公开(公告)号：EP0122940B1
公开(公告)日：1988-06-08
申请号：EP83903206.7
申请日：1983-10-12
申请人： FANUC LTD.
发明人： KINOSHITA, Mitsuo , OBARA, Haruki
IPC分类号： B23H1/02 , B23Q15/00 , G05B19/405
CPC分类号： B23H7/20
摘要： A system for setting wire-cut electrical discharge machining conditions comprises a wire-cutting spark erosion machine provided with: pushbutton switches (6, 7) for moving a cursor (C) to select each of machining conditions displayed on the screen of a CRT display device (5); numeric pushbutton switches (K0, K1..., K9) for setting a value for each machining condition; and incrementing and decrementing pushbutton switches (8, 9) for consecutively incrementing and decrementing values set for the various machining conditions, respectively. A value for a machining condition selected using the cursor (C) is set by means of the numeric pushbutton switches (K0, K1..., K9) and either of the value-incrementing and decrementing pushbutton switches (8, 9).

70. 发明公开

EP0233297A1 DEVICE FOR AUTOMATIC CONNECTION OF WIRE ELECTRODE IN WIRE CUT ELECTRIC SPARK MACHINE 失效
标题翻译：安排自动连接已IN线切割电火花器件的引线。
公开(公告)号：EP0233297A1
公开(公告)日：1987-08-26
申请号：EP86904949.4
申请日：1986-08-21
申请人： FANUC LTD.
发明人： OBARA, Haruki , ASO, Toshiyuki , KINOSHITA, Hiroshi , ISHIBASHI, Tamotsu
IPC分类号： B23H7/02 , B23H7/10
CPC分类号： B23H7/102
摘要： A device for automatic connection of the wire electrode in a wire cut spark machine, which is capable of conducting automatic connection of the wire electrode smoothly and reliably. A wire processing unit (90) integrally and rotatably coupled to a rotary shaft (61) of a pneumatic pressure motor (60) has a nozzle-forming unit (120) which, when it is opened, forms a slit (S) that permits a wire electrode (W) to pass through and which, when it is closed, forms a nozzle hole (125) that can fit to an upper wire guide (12). The wire processing unit (90) is selectively located by means of a stopper (150) at either a wire inserting position or a wire retreat position. In case the wire electrode is broken, the wire processing unit is driven by a motor from the retreat position to the wire inserting position. Then, the nozzle-forming unit is closed, so that the wire electrode introduced through the slit when the wire processing unit is driven is held in the nozzle hole. Thereafter, as a working liquid is supplied from the upper wire guide to the nozzle hole, the wire electrode is fed and automatically connected, being confined by the working liquid injected onto the work (P).

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