Wire-cut electric discharge machine control system to compensate for
wire flexure during machining
    1.
    发明授权
    Wire-cut electric discharge machine control system to compensate for wire flexure during machining 失效
    线切割放电机控制系统,用于补偿加工过程中的电线弯曲

    公开(公告)号:US4520253A

    公开(公告)日:1985-05-28

    申请号:US414364

    申请日:1982-08-26

    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。

    Method of reducing wire-cut electric discharge machining errors
    2.
    发明授权
    Method of reducing wire-cut electric discharge machining errors 失效
    减少断线放电加工误差的方法

    公开(公告)号:US4546227A

    公开(公告)日:1985-10-08

    申请号:US413381

    申请日:1982-08-25

    IPC分类号: B23H7/06 C25B1/16

    CPC分类号: B23H7/065

    摘要: A method of controlling a wire-cut electric discharge machine to prevent cutting errors when cutting a corner CN which are caused by flexing of a wire electrode 1 during electric discharge cutting of a workpiece. Electric discharge is stopped when a rectilinear slot is cut to measure an amount of flexing of the wire electrode 1, and then the measured amount of flexing is used to effect an arithmetic operation to calculate a commanded speed or an interval of time in which relative movement between the wire electrode and the workpiece is arrested at the corner CN. The corner CN is cut under the control of the calculated commanded speed or interval of time in which the relative movement is arrested.

    摘要翻译: PCT No.PCT / JP81 / 00344 Sec。 371日期1982年8月25日 102(e)日期1982年8月25日PCT提交1981年11月18日PCT公布。 出版物WO82 / 02164 日本1982年7月8日。一种控制切断放电加工机的方法,以防止在切割工件的放电切割期间由线电极1弯曲引起的角部CN切割时的切割误差。 当切割直线槽以测量线电极1的弯曲量时,停止放电,然后使用测量的弯曲量进行算术运算,以计算指令速度或相对运动的时间间隔 导线电极和工件之间的夹角在CN处。 拐角CN在计算出的指令速度或相对运动停止的时间间隔的控制下被切割。

    Wire-cut electric discharge machine controller for compensating the
machining cornering parameters
    3.
    发明授权
    Wire-cut electric discharge machine controller for compensating the machining cornering parameters 失效
    线切割放电机控制器,用于补偿加工转弯参数

    公开(公告)号:US4523073A

    公开(公告)日:1985-06-11

    申请号:US413383

    申请日:1982-08-25

    摘要: A cutting control method for reducing cutting errors at a corner due to flexing of a wire electrode in a wire-cut electric discharge machine in which a voltage is applied between the wire electrode and a workpiece to cut the latter with electric discharge energy while moving the workpiece relatively to the wire electrode based on cutting command data for cutting the workpiece to a predetermined shape. An amount of override (K) is determined by an override arithmetic unit (103b) using data (r) on the radius of curvature of a corner angle (.theta.) data which are given as the cutting command data from a paper tape (101). A relative speed (F) is derived by a relative speed arithmetic unit (103f) from the amount of override (K) and a commanded feeding speed (F.sub.0). Motors (MX, MY) are rotated by pulse distributors (105X, 105Y) and servo circuits (SVX, SVY), respectively, based on the relative speed (F) which is lower than the commanded feeding speed (F.sub.0) to move the workpiece with respect to the wire electrode for electric discharge cutting of the corner.

    摘要翻译: PCT No.PCT / JP81 / 00421 Sec。 371日期1982年8月25日 102(e)日期1982年8月25日PCT提交1981年12月28日PCT公布。 公开号WO82 / 02355 日本1982年7月22日。一种切割控制方法,用于减少在线切割放电加工机中的线电极弯曲的拐角处的切割误差,其中在线电极和工件之间施加电压以切断线 具有放电能量,同时基于用于将工件切割成预定形状的切割命令数据,相对于线电极移动工件。 使用从作为来自纸带(101)的切割命令数据给出的角角(theta)数据的曲率半径的数据(r),由超控运算单元(103b)确定覆盖量(K) 。 通过相对速度运算单元(103f)根据超驰量(K)和指令进给速度(F0)导出相对速度(F)。 基于低于指令进给速度(F0)的相对速度(F),电机(MX,MY)分别由脉冲分配器(105X,105Y)和伺服电路(SVX,SVY)旋转,以移动工件 相对于用于角落的放电切割的线电极。

    Electric discharge machining condition setting system
    4.
    发明授权
    Electric discharge machining condition setting system 失效
    放电加工条件设定系统

    公开(公告)号:US4685064A

    公开(公告)日:1987-08-04

    申请号:US618397

    申请日:1984-05-25

    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。

    Method of measuring flexure value of wire electrode
    5.
    发明授权
    Method of measuring flexure value of wire electrode 失效
    线电极挠曲值测量方法

    公开(公告)号:US4521662A

    公开(公告)日:1985-06-04

    申请号:US413375

    申请日:1982-08-25

    CPC分类号: B23H7/065

    摘要: A method of automatically measuring the flexure value of a wire electrode 1 in a wire-cut electric discharge machine, such that at a measurement point in the course of electric discharge machining, the electric discharge is temporarily stopped, and whether or not a wire electrode 1 and a workpiece 2 come into contact is sensed by a contact sensing device 107a. The wire electrode 1 and the workpiece 2 are moved relatively to advance or retreat in accordance with a sensed touch signal TS, and a distance .epsilon..sub.1 of movement until the contact state changes is measured. The flexure value .epsilon. is calculated from the measured movement distance .epsilon..sub.1 and the size of the discharge gap.

    摘要翻译: PCT No.PCT / JP81 / 00345 Sec。 371日期1982年8月25日 102(e)日期1982年8月25日PCT提交1981年11月18日PCT公布。 公开号WO82 / 02165 日本1982年7月8日。一种自动测量线切割放电加工机中线电极1的挠曲值的方法,使得在放电加工过程中的测量点暂时停止放电, 并且由接触检测装置107a感测线电极1和工件2是否接触。 线电极1和工件2根据检测到的触摸信号TS相对移动而前进或后退,并且测量直到接触状态改变的移动距离ε1。 根据测量的移动距离ε1和放电间隙的大小计算挠曲值ε。

    Method of measuring flexure value of wire electrode
    6.
    发明授权
    Method of measuring flexure value of wire electrode 失效
    线电极挠曲值测量方法

    公开(公告)号:US4622450A

    公开(公告)日:1986-11-11

    申请号:US696487

    申请日:1985-01-30

    CPC分类号: B23H7/065

    摘要: A method of automatically measuring the flexure value of a wire electrode 1 in a wire-cut electric discharge machine is disclosed.At a measurement point in the course of electric discharge machining, the electric discharge is temporarily stopped, and whether or not the wire electrode 1 and a workpiece 2 come into contact is sensed by a contact sensing device 107a. The wire electrode 1 and the workpiece 2 are moved relatively to advance or retreat in accordance with the sensed touch signal TS, and the distance .epsilon..sub.1 of movement until the contact state changes, is measured. The flexure value .epsilon. is obtained calculatively from the measured movement distance .epsilon..sub.1.

    Electric discharge machining power source
    7.
    发明授权
    Electric discharge machining power source 失效
    放电加工电源

    公开(公告)号:US4864092A

    公开(公告)日:1989-09-05

    申请号:US211123

    申请日:1988-06-21

    申请人: Haruki Obara

    发明人: Haruki Obara

    IPC分类号: B23H1/02

    CPC分类号: B23H1/022 B23H2300/20

    摘要: An electric discharge machining power source is provided which charges a capacitor connected in parallel with an electrode and a work, and applies a charge voltage between the electrode and the work to cause electric discharge, thereby performing electric discharge machining. The machining power source allows rapid charging of the capacitor and is inexpensive while the power source efficiency is improved. A switching element is arranged in the charge circuit of the capacitor which is capable of being turned on and off. The switching element connects the capacitor to a direct current power source and charges the capacitor. A flywheel circuit including an inductance and a diode is provided in the charge circuit. A reverse voltage that is caused by a stray inductance in the electric discharge circuit during electric discharge is applied to the capacitor as a positive voltage through the flywheel circuit.

    摘要翻译: 提供一种放电加工电源,其对与电极和工件并联连接的电容器进行充电,并且在电极和工件之间施加充电电压以进行放电,从而进行放电加工。 加工电源允许电容器的快速充电并且便宜,同时电源效率提高。 开关元件布置在电容器的充电电路中,其能够导通和断开。 开关元件将电容器连接到直流电源并对电容器充电。 在充电电路中提供包括电感和二极管的飞轮电路。 在放电期间由放电电路中的杂散电感引起的反向电压通过飞轮电路作为正电压施加到电容器。

    Wire electrode type electrical discharge machining equipment
    8.
    发明授权
    Wire electrode type electrical discharge machining equipment 失效
    线电极式放电加工设备

    公开(公告)号:US4801779A

    公开(公告)日:1989-01-31

    申请号:US30849

    申请日:1987-03-12

    申请人: Haruki Obara

    发明人: Haruki Obara

    IPC分类号: B23H7/02 B23H7/04 B23H7/06

    CPC分类号: B23H7/065

    摘要: A wire electrode type electrical discharge machining apparatus is provided with a taper-machining controller which is capable of conducting taper-machining with high accuracy, even in the case where the rigidity of the electrode varies due to the variation of the temperature thereof following the variation of the electric current flowing therein. The information representing the relations between a machining current and a taper-angle in the entire controllable range of a taper-angle to be controlled is prepared in advance and stored in a memory. A means for setting a machining current, a means for program-inputting a machining current, or a means for sensing a machining current is provided. The above information is read by a correction means, in response to the machining current which was set, program-input, or sensed by one of the above presented means, before it is input to the taper-machining controller, which corrects the taper-angle. In one embodiment, the taper machining controller computes the correct taper angle. With this corrected taper angle, tapper-machining can be conducted with high accuracy.

    摘要翻译: PCT No.PCT / JP86 / 00289 Sec。 371日期1987年3月12日 102(e)1987年3月12日PCT PCT 1986年6月11日PCT公布。 公开号WO86 / 07294 日期:1986年12月18日。线电极放电加工装置具有能够以高精度进行锥形加工的锥形加工控制器,即使在电极的刚度由于变化而变化的情况下 的温度随其中流动的电流的变化而变化。 预先准备表示要控制的锥角的整个可控范围内的加工电流与锥角之间的关系的信息,并将其存储在存储器中。 提供了用于设定加工电流的装置,用于编程输入加工电流的装置或用于感测加工电流的装置。 上述信息由校正装置读取,响应于在输入到锥形加工控制器之前由上述提出的装置之一设定,程序输入或感测的加工电流, 角度。 在一个实施例中,锥形加工控制器计算正确的锥角。 通过这种校正的锥角,可以高精度地进行分条加工。

    Electric discharge machining apparatus of wire-cutting type
    9.
    发明授权
    Electric discharge machining apparatus of wire-cutting type 失效
    线切割放电加工设备

    公开(公告)号:US4783583A

    公开(公告)日:1988-11-08

    申请号:US31071

    申请日:1987-03-18

    IPC分类号: B23H7/10 B23H7/02

    CPC分类号: B23H7/10

    摘要: The electric discharge machining apparatus of the wire-cutting type comprises a wire-treating unit (48) movable in the horizonal direction relative to an upper wire guide member (12) between the upper wire guide member and a work table (10) to traverse a wire electrode (W) extending downward from a wire passage (13) of the upper wire guide member. The wire-treating unit has a base block (55) and a movable block (56) that can approach to and separate from the base block to define a slit (60) and a nozzle hole (61) that can be opened and closed between the two blocks. The slit extends in the horizontal moving direction of the wire-treating unit to receive the wire electrode therein. The nozzle hole can be connected to the lower end of the wire passage of the upper wire guide member, and the nozzle hole is constructed so that a spray liquid supplied into the wire passage of the upper wire guide member can be injected into a wire passage (15) of a lower wire guide member (14). The wire-treating unit comprises a wire-detecting device (66) for detecting the end of the wire electrode between the base block and the movable block and wire-cutting means (62) for cutting the wire electrode between the base block and the movable block.

    摘要翻译: PCT No.PCT / JP86 / 00372 Sec。 371日期1987年5月19日 102(e)日期1987年5月19日PCT提交1986年7月18日PCT公布。 第WO87 / 00467号公报 日期:1987年1月29日。线切割型放电加工装置包括:线处理单元(48),其能够相对于上线引导构件(12)在水平方向上相对于上线引导构件和 工作台(10)穿过从上导线构件的线路(13)向下延伸的线电极(W)。 线处理单元具有底座(55)和可移动块(56),可移动块(56)能够接近并与基座分离,以限定狭缝(60)和喷嘴孔(61),该孔可以在 两个街区。 狭缝在线处理单元的水平移动方向上延伸以在其中容纳线电极。 喷嘴孔可以连接到上线引导构件的线通道的下端,并且喷嘴孔被构造成使得供应到上线引导构件的线通道中的喷射液体可以被注入到线路通道 (14)的下部导线构件(15)。 线处理单元包括用于检测基块和可移动块之间的线电极的端部的线检测装置(66)和用于在基块和可移动块之间切割线电极的线切割装置(62) 块。

    Wire discharge machining power source
    10.
    发明授权
    Wire discharge machining power source 失效
    排线加工电源

    公开(公告)号:US4678884A

    公开(公告)日:1987-07-07

    申请号:US807509

    申请日:1985-11-22

    IPC分类号: B23H1/02 B23H7/04

    CPC分类号: B23H7/04

    摘要: A wire discharge machining power source controls an average machining voltage value applied between a wire electrode (P) and a workpiece (W) to be zero to prevent galvanic corrosion of the workpiece (W). A reverse voltage application time control circuit (2) detects the average machining voltage value and generates a pulse (S5) having a pulse width corresponding to a detected value. A reverse voltage regulating circuit (1) detects a difference between a reference voltage and a voltage applied between a transistor (T2) and a resistor (R2) upon application of the reverse voltage through the transistor (T2) and the resistor (R2), and supplies a difference signal, which corresponds to the detected difference, as an ON control signal to the transistor (T2) for a period corresponding to the width of the pulse (S5), thereby controlling the reverse voltage value and setting the average machining voltage value to zero.

    摘要翻译: 线放电加工电源将施加在线电极(P)和工件(W)之间的平均加工电压值控制为零,以发挥工件(W)的电偶腐蚀。 反向电压施加时间控制电路(2)检测平均加工电压值,并生成具有对应于检测值的脉冲宽度的脉冲(S5)。 反向电压调节电路(1)通过晶体管(T2)和电阻器(R2)施加反向电压时,检测参考电压和施加在晶体管(T2)和电阻器(R2)之间的电压之间的差值, 并且将对应于检测到的差异的差分信号作为ON控制信号提供给晶体管(T2)一段与脉冲宽度相对应的周期(S5),由此控制反向电压值并设定平均加工电压 值为零。