公开(公告)号：US5590964A

公开(公告)日：1997-01-07

申请号：US199287

申请日：1994-03-02

申请人： Haruki Obara ,  Yuki Kita ,  Masaya Ito

发明人： Haruki Obara ,  Yuki Kita ,  Masaya Ito

IPC分类号： B23H7/02 ,  B23H7/04 ,  G01K1/14 ,  B23H5/00 ,  G01K7/16 ,  G01K13/00

CPC分类号： B23H7/02 ,  B23H7/04

摘要： A wire temperature measuring method for a wire electric discharge machine by which temperature and temperature distribution of a wire can be accurately measured during electric discharge machining. After a machining voltage is cut off, a loop current flows. Based on the loop current and a voltage between electrodes measured by a differential amplifier, a resistance between the electrodes is obtained, and the temperature of a wire is obtained based on the resistance. Accordingly, the wire temperature during actual machining operation can be measured with accuracy.

摘要翻译： PCT No.PCT / JP93 / 00972 Sec。 371日期：1994年3月2日 102（e）1994年3月2日PCT PCT 1993年7月13日PCT公布。 出版物WO94 / 02277 日期1994年2月3日电线放电机的线材温度测量方法，其可以在放电加工期间精确地测量线材的温度和温度分布。 在加工电压被切断后，回路电流流动。 基于环路电流和由差分放大器测量的电极之间的电压，获得电极之间的电阻，并且基于电阻获得导线的温度。 因此，可以精确地测量实际加工操作中的线温度。

公开(公告)号：US4868760A

公开(公告)日：1989-09-19

申请号：US196012

申请日：1988-04-27

申请人： Haruki Obara

发明人： Haruki Obara

IPC分类号： B23H7/02 ,  B23H1/00 ,  B23H7/04 ,  B23H7/06

CPC分类号： B23H7/065

摘要： An electric discharge machining control apparatus is provided capable of effecting straight machining, corner machining, and arcuate machining in a stable manner, with improved accuracy. A numerical control unit serves for straight machining under optimum electrical conditions, and controls the on-off operation of relay contacts to and the on-off duty ratio of a pulse oscillator, in order to establish the respective optimum values of a capacitor charging voltage, discharge current, and charge and discharge time read out from a memory in accordance with a calculated corner angle or a calculated radius of a circular arc, machining.

公开(公告)号：US4833290A

公开(公告)日：1989-05-23

申请号：US186486

申请日：1988-03-28

申请人： Haruki Obara

发明人： Haruki Obara

IPC分类号： B23H7/02 ,  B23H7/04 ,  B23H7/10 ,  B23H7/20

CPC分类号： B23H7/101 ,  B23H7/04

摘要： An electric discharge apparatus in which a voltage is applied between a workpiece and a wire and a machining liquid is supplied into a gap between the workpiece and the wire for machining the workpiece. When a nozzle cannot be located closely to the surface of the workpiece, a nozzle liquid pressure is calculated from the nozzle height, and reference machining conditions are varied by the nozzle liquid pressure, so that optimum machining conditions can automatically be determined. Machining conditions (the Material M, the workpiece thickness t, the wire diameter d) are entered from an input means (1), and reference machining conditions (Vo, Ton0, Toff0) from a machining condition storing means (3) for the electric discharge wire cutting apparatus are selected. Nozzle liquid pressures (Pu, P1) are calculated by a calculating means (2) from nozzle heights (u, 1) entered from the input means (1). In a machining condition varying means (4), machining conditions (V, Ton, Toff) obtained by varying the reference machining conditions while the nozzle liquid pressures (Pu, P1) are given to a machining power supply (5 ) to machine the workpiece under the varied machining conditions.

公开(公告)号：US4820895A

公开(公告)日：1989-04-11

申请号：US767267

申请日：1985-08-07

申请人： Haruki Obara

发明人： Haruki Obara

IPC分类号： B23H1/02 ,  B23H7/04 ,  B23H7/26

CPC分类号： B23H7/26 ,  B23H2500/20

摘要： A position finding apparatus of an electric discharge machine has a switching device including a relay 3 set into operation when tool electrode position finding starts, so that the switching device turns off machining power applied across a workpiece W and a tool electrode P. At such time, a differentiated waveform, which is obtained by differentiating in a differentiating circuit 15, a square wave produced by a pulse oscillator, is applied across the workpiece W and tool electrode P. Thereafter, position finding is performed with regard to the tool electrode P. A resistor in the differentiating circuit 15 can be made variable in value to alter the differentiated waveform applied across the workpiece W and tool electrode P.

摘要翻译： PCT No.PCT / JP84 / 00601 Sec。 371日期1985年8月7日 102（e）日期1985年8月7日PCT提交1984年12月18日PCT公布。 出版物WO85 / 02800 日本1987年7月4日。放电机的位置查找装置具有开关装置，其包括在工具电极位置求取开始时设定的继电器3，使得开关装置关闭施加在工件W和 此时，通过在微分电路15中区分由脉冲振荡器产生的方波获得的微分波形被施加在工件W和工具电极P之间。此后，利用 可以使微分电路15中的电阻值变化以改变施加在工件W和工具电极P上的微分波形。

公开(公告)号：US4803327A

公开(公告)日：1989-02-07

申请号：US123066

申请日：1987-12-04

申请人： Haruki Obara

发明人： Haruki Obara

IPC分类号： B23H7/10

CPC分类号： B23H7/10

摘要： An electric power feeder for a wire electrode type electrical discharge machining apparatus having a wire electrode includes a first power supply for rough electrical discharge machining and a second power supply for finish electrical discharge machining. In one embodiment, the second electric power supply is movably arranged in the direction crossing the wire electrode so that the wire electrode is selectively connected to the first electric power supply or to the second electric power supply by moving the second power supply, feeder for a wire electrode type electrical discharge machining equipment comprising a wire electrode guide. In a second embodiment, the first electric power supply and the second electric power supply are arranged leaving a small distance therebetween in which the wire electrode passes and a wire electrode shifter changes the direction of the wire electrode so that the wire electrode (1) is selectively connected to the first electric power supply or the second electric power supply.

公开(公告)号：US4760233A

公开(公告)日：1988-07-26

申请号：US10166

申请日：1987-03-12

申请人： Haruki Obara

发明人： Haruki Obara

IPC分类号： B23H1/02 ,  B23H9/14

CPC分类号： B23H1/02

摘要： A drilling confirmation apparatus for an electric discharge machining system automatically, correctly and easily detects the completion of drilling of a hole through a workpiece. A voltage representing a current flowing across a current limiting resistor of the electric discharge machining system is supplied to a divider through a smoothing differential amplifier, representing a detected average machining current. The frequency of a command pulse supplied from a numerical control unit to a servo circuit is converted into a corresponding voltage through a frequency-to-voltage converter. The converted voltage is supplied to the divider as a detected machining speed. The divider divides the detected machining current by the detected machining speed to obtain a machining area signal. The machining area signal and a delayed machining area signal, which is obtained by delaying the machining area signal by a predetermined period of time, are supplied to a comparator. When the delayed machining area signal exceeds the machining area signal, completion of drilling is detected.

摘要翻译： PCT No.PCT / JP86 / 00270 Sec。 371日期1987年3月12日 102（e）1987年3月12日PCT PCT日期：1986年5月29日PCT公布。 出版物WO86 / 06995 日期：1986年12月4日。一种用于放电加工系统的钻孔确认装置，自动，正确且容易地检测通过工件钻孔的完成。 表示流过放电加工系统的限流电阻的电流的电压通过平滑差分放大器提供给分频器，表示检测到的平均加工电流。 从数字控制单元向伺服电路提供的指令脉冲的频率通过频率 - 电压转换器转换成相应的电压。 转换的电压作为检测到的加工速度被提供给分压器。 分压器将检测到的加工电流除以检测到的加工速度，以获得加工区域信号。 通过将加工区域信号延迟预定时间段而获得的加工区域信号和延迟加工区域信号被提供给比较器。 当延迟加工区域信号超过加工区域信号时，检测到钻孔完成。

公开(公告)号：US4740667A

公开(公告)日：1988-04-26

申请号：US752104

申请日：1985-06-25

申请人： Haruki Obara

发明人： Haruki Obara

IPC分类号： B23H7/02 ,  B23H7/10 ,  B23H1/10

CPC分类号： B23H7/101

摘要： An wire electrode cooling apparatus in a wire cut discharge machine is provided for supplying a working fluid to a guide member which guides a wire electrode therethrough and cools the wire electrode. The working fluid is supplied to the guide member through a flow control valve. The opening of the flow control valve is controlled automatically or manually, either depending upon the pressure of the working fluid which changes in accordance with the electric spark forming speed. The pressure of the working fluid is optimally maintained at the electric spark forming region for high- and low-speed electric spark forming. At the same time, the flow rate of the working fluid supplied to the guide member is optimized, thereby preventing the wire electrode from being disconnected.

摘要翻译： PCT No.PCT / JP84 / 00513 Sec。 371日期1985年6月25日第 102（e）日期1985年6月25日PCT提交1984年10月26日PCT公布。 第WO85 / 01907号公报 日期：1985年5月9日。线切割放电机中的线电极冷却装置被设置用于将工作流体供应到引导部件，引导部件引导线电极穿过其并冷却线电极。 工作流体通过流量控制阀供给到引导构件。 流量控制阀的打开自动或手动控制，取决于根据电火花形成速度变化的工作流体的压力。 工作流体的压力被最佳地保持在用于高速和低速电火花形成的电火花形成区域。 同时，提供给引导构件的工作流体的流量被优化，从而防止线电极断开。

公开(公告)号：US4685064A

公开(公告)日：1987-08-04

申请号：US618397

申请日：1984-05-25

申请人： Mitsuo Kinoshita ,  Haruki Obara

发明人： Mitsuo Kinoshita ,  Haruki Obara

IPC分类号： G05B19/409 ,  B23H7/02 ,  B23H7/04 ,  B23H7/20 ,  G05B19/405 ,  B23Q15/00

CPC分类号： B23H7/20

摘要： A wire cut electric discharge machining condition setting system including cursor shift push button switches for selecting with a cursor one of the machining conditions displayed on a screen at a CRT display unit, numerical push button switches for setting values of the selected machining conditions, and increment and decrement push button switches for continuously updating the preset values of the machining conditions all arranged in a wire cut electric discharge machine. The value of the machining condition selected with the cursor is set by the numerical push button switches and is updated by the increment and decrement push button switches.

摘要翻译： PCT No.PCT / JP83 / 00339 Sec。 371日期1984年5月25日第 102（e）日期1984年5月25日PCT提交1983年10月12日PCT公布。 公开号WO84 / 01734 日期：1984年5月10日。一种线切割放电加工条件设定系统，包括光标位移按钮开关，用于在CRT显示单元的屏幕上显示的加工条件之一用光标选择数字按钮开关，用于设定 选择的加工条件，以及增加和减少按钮开关，以连续更新所有布置在线切割放电机中的加工条件的预设值。 用光标选择的加工条件的值由数字按钮开关设置，并通过递减按钮开关更新。

公开(公告)号：US4520253A

公开(公告)日：1985-05-28

申请号：US414364

申请日：1982-08-26

申请人： Gotaro Gamo ,  Mitsuo Kinoshita ,  Haruki Obara

发明人： Gotaro Gamo ,  Mitsuo Kinoshita ,  Haruki Obara

IPC分类号： B23H7/06 ,  B23P1/08

CPC分类号： B23H7/065

摘要： There is disclosed a method of controlling a wire-cut electric discharge machine to correct cutting errors due to flexing of a wire electrode caused by electric discharge. A processing unit processes data (x.sub.1, y.sub.1, r.sub.1, x.sub.2, y.sub.2) on a corner shape which is given by a paper tape and data on an amount of flexing (D.sub.0) upon rectilinear cutting for calculating a corrected radius of curvature r.sub.1 ' of the corner, and determines the center Pc of an arc having the radius of curvature r.sub.1 ' and contacting straight lines (l.sub.1, l.sub.2) and points of contact Pt, Pt' to move the wire electrode along a straight line P.sub.1 Pt, an arc PtPt', and a straight line Pt'P.sub.3 to thereby correct the cutting error at the corner.

摘要翻译： PCT No.PCT / JP81 / 00422 Sec。 371日期1982年8月26日 102（e）日期1982年8月26日PCT提交1981年12月28日PCT公布。 出版物WO82 / 02356 日期：1982年7月22日。公开了一种控制线切割放电机的方法，以校正由放电引起的线电极弯曲引起的切割误差。 处理单元处理由纸带给出的拐角形状的数据（x1，y1，r1，x2，y2），并且在直线切割时对弯曲量（D0）的数据进行处理，以计算校正曲率半径r1' 并且确定具有曲率半径r1'并接触直线（11,112）和接触点Pt，Pt'的圆弧的中心Pc，以使线电极沿着直线P1Pt移动，电弧PtPt' 和直线Pt'P3，从而校正拐角处的切割误差。

公开(公告)号：US4431895A

公开(公告)日：1984-02-14

申请号：US252215

申请日：1981-04-08

申请人： Haruki Obara

发明人： Haruki Obara

IPC分类号： B23H1/02 ,  B23P1/08

CPC分类号： B23H1/024

摘要： A power source arrangement for electric discharge machining in which a power source and a switching element are connected in parallel to an electrode and a workpiece and the switching element is driven by a pulse signal of a predetermined period to perform electric discharge machining of the workpiece, there being also provided a pulse signal generator for generating a pulse signal in which the ratio of the OFF interval to the ON interval gradually increases with the lapse of time and a detector for detecting the occurrence of an arc or short in the spark gap. Upon detection of arcing or shorting in the spark gap by the detector, the pulse signal generator is activated so that the pulse signal of the predetermined period to be applied to the switching element is gated by the output pulse signal from the pulse signal generator until the arc or short is removed.

摘要翻译： 一种用于放电加工的电源装置，其中电源和开关元件与电极和工件并联连接，并且开关元件由预定周期的脉冲信号驱动以对工件进行放电加工， 还提供了一种用于产生脉冲信号的脉冲信号发生器，其中OFF间隔与ON间隔的比率随着时间的推移逐渐增加，以及用于检测火花间隙中出现电弧或短路的检测器。 当检测器检测到火花间隙中的电弧或短路时，脉冲信号发生器被激活，使得施加到开关元件的预定周期的脉冲信号由来自脉冲信号发生器的输出脉冲信号选通，直到 电弧或短路被去除。