公开(公告)号：EP0197160A1

公开(公告)日：1986-10-15

申请号：EP85905107.0

申请日：1985-10-11

申请人： FANUC LTD.

发明人： IZUMIYA, Shunzo ,  OKUYAMA, Yuji ,  ITO, Masaya

IPC分类号： B23H7/02

CPC分类号： B23H7/10 ,  B23H3/00

摘要： A machining device by wire-cut discharge which displays a machinable time (T) based upon a remaining wire electrode (2). The length of a wire when a bobbin (B1) is ioaded and a speed for sending the wire are input through a manual input device (7), and are stored in a memory (6). A CPU (5) calculates a new lenght (L) of the remaining wire relying upon the length of wire when it loaded or the length (L) of the remaining wire by them and the speed (V) for sending the wire every after a predetermined period of time during the machining (step S1), and further calculates the machinable time (T) relying upon the newly calculated length (1) of the remaining wire and the speed (V) for sending the wire. The machinable time is displayed on a display (8) (steps S2, S3).

公开(公告)号：EP0081587A1

公开(公告)日：1983-06-22

申请号：EP82901427.3

申请日：1982-05-12

申请人： FANUC LTD

发明人： OBARA, Haruki ,  IZUMIYA, Shunzo

IPC分类号： B23H1/02

CPC分类号： B23H7/04

摘要： A wire cut electric discharge machining power source which can improve the machining speed by applying the charged voltage of a capacitor between a wire electrode and a workpiece and controlling the terminal voltage of the capacitor to discharge machine the workpiece. The capacitor (15) for applying the discharge machining voltage between the workpiece (16) and the wire electrode (17) is charged from a DC power source (11) via a transistor (13) as a switching element, a transistor (24) is connected as an auxiliary switching element in parallel with transistor (13) to detect the terminal voltage of the capacitor (15) to control the transistor (24), thereby maintaining the terminal voltage of the capacitor (15) at an intermediate level (H,), so the average machining voltage becomes lower.

公开(公告)号：EP0081587B1

公开(公告)日：1986-07-23

申请号：EP82901427.3

申请日：1982-05-12

申请人： FANUC LTD.

发明人： OBARA, Haruki ,  IZUMIYA, Shunzo

IPC分类号： B23H1/02

CPC分类号： B23H7/04

公开(公告)号：EP0124625A1

公开(公告)日：1984-11-14

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 whetherthere 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 operation, 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 fortuming on and off a switching element in a discharge circuit, is blocked during the second cutting operation.

公开(公告)号：EP0197160B1

公开(公告)日：1991-07-03

申请号：EP85905107.0

申请日：1985-10-11

申请人： FANUC LTD.

发明人： IZUMIYA, Shunzo ,  OKUYAMA, Yuji ,  ITO, Masaya

IPC分类号： B23H7/02

CPC分类号： B23H7/10 ,  B23H3/00

摘要： A machining device by wire-cut discharge which displays a machinable time (T) based upon a remaining wire electrode (2). The length of a wire when a bobbin (B1) is loaded and a speed for sending the wire are input through a manual input device (7), and are stored in a memory (6). A CPU (5) calculates a new length (L) of the remaining wire relying upon the length of wire when it loaded or the length (L) of the remaining wire by them and the speed (V) for sending the wire every after a predetermined period of time during the machining (step S1), and further calculates the machinable time (T) relying upon the newly calculated length (L) of the remaining wire and the speed (V) for sending the wire. The machinable time is displayed on a display (8) (steps S2, S3).

公开(公告)号：EP0157885A1

公开(公告)日：1985-10-16

申请号：EP84903756.9

申请日：1984-10-11

申请人： FANUC LTD

发明人： INOUE, Michiya ,  OBARA, Haruki ,  IZUMIYA, Shunzo

IPC分类号： B23P1/08

CPC分类号： B23H1/022 ,  B23H2300/20

摘要： A power supply apparatus for wire-cut electric discharge machining charges a capacitor (4) from a DC power source (2) through a switching element (1) and discharges the electric charge stored in the capacitor (4) to the gap between a work (6) and a wire electrode (7) through a switching element (5). The power supply apparatus supplies a single-polarity discharge current having a small pulse width to the gap between the wire electrode (7) and the work (6) and allows the capacitor (4) to be efficiently recharged. For this purpose, a series circuit of an impedance element (50, 80) other than capacitance and a diode (51) is connected in parallel to the capacitor (4), the diode (51) being connected in such a manner that its polarity is opposite to that of the voltage applied for the purpose of recharging the capacitor (4).

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.

公开(公告)号：EP0073253A1

公开(公告)日：1983-03-09

申请号：EP82900662.6

申请日：1982-03-05

申请人： FANUC LTD.

发明人： OBARA, Haruki ,  INOUE, Michiya ,  IZUMIYA, Shunzo

IPC分类号： B23H1/02

CPC分类号： B23H1/022

摘要： Manual switches (1a) and (11a) of an ON-time setting unit (1) and an OFF-time setting unit (11) are set to a desired setpoint, then the switches which are related to the setpoint through decoders (2) and (12), in switching circuits (3.) and (13.) are closed, setting the operating times of timers (4) and (14), which have RC time constant circuits. Timers (4) and (14) are operated under mutual restrictions by gate circuits synchronized with the timing pulses from an oscillator (5). The output pulse of the timer (4) controls discharge circuit (6) so as to adjust the output of a wire electrode (8) of an electrical discharge machining apparatus.

摘要翻译： 将导通时间设定单元（1）和断开时间设定单元（11）的手动开关（1a）和（11a）设定为期望的设定值，然后通过解码器（2）与设定点相关的开关 和（12）中，在开关电路（30）和（130）中闭合，设定具有RC时间常数电路的定时器（4）和（14）的工作时间。 定时器（4）和（14）在与来自振荡器（5）的定时脉冲同步的门电路相互限制的情况下工作。 定时器（4）的输出脉冲控制放电电路（6），调整放电加工装置的线电极（8）的输出。