摘要:
An apparatus for measuring and/or controlling the tension in a ribbon or wire-type electrode of an electric discharge machine in which the ribbon or wire-type electrode is passed around a rotatable roller which is in operative engagement with a sensor. The roller is adapted to be driven in rotation by a motor or to be retarded by a brake. A support member for the roller and the motor or for the roller and the brake accommodates the weight of the roller and the motor or of the roller and the brake so that no load caused by the motor or the brake plus the roller acts in the direction of the tensile stress of the electrode. Any movement of the support means can be detected by a sensor, and the magnitude of the tension can be derived by a control unit from the output signal of the sensor. In operation, the control unit determines the tension on the wire and causes the unit to either increase or decrease the resistance caused by the roller.
摘要:
An electroerosion process and apparatus are used to produce crude electrodes which are shaped thereafter into finished form by wire cutting erosion. The finished electrodes are used in subsequent countersinking of workpieces by electroerosion.
摘要:
The invention pertains to a method and a device for controlling a machine tool, in particular an EDM machine, wherein the control data necessary for machining one or more workpieces is fed from the control device to the machine tool. Therein a list of action data for controlling special procedures (actions) and a list of event data for characterizing prescribed operating states (events), in particular, malfunctions, are permanently provided. The action and event data are linked in setting up the machine such that upon occurrence of one or more events, one or more actions are performed.
摘要:
A pulse generator for spark-erosive metal working contains a charge regulator circuit for charging a storage capacitor. A storage capacitor is sinusoidally discharged across a switching device to a spark gap. Charging always occurs in a defined manner independently of the preceding pulses, so that uniform pulses can be generated. The storage capacitor is charged with an energy excess of required for discharge and the energy still remaining after spark discharge is recovered in a d.c. voltage source. The switching device (3) is non-conductive only when the discharge current has substantially decayed.
摘要:
A control device for controlling a machine tool includes at least one memory for storing control data characterizing the instantaneous operating state of the machine tool during machining and a memory management device for managing the control data such that machining can be resumed after an interruption. The control data is separated into dynamic control data and static control data. The method for controlling a machine tool uses the control device and stores the static and dynamic control data in the memory. As a workpiece is machined, the instantaneous operating state of the machine tool is continuously stored so that machining can be resumed after an interruption.
摘要:
A method and a device for controlling the entire machining operation of machine tools, in particular EDM machines, whereby the entire machining operation is broken down into individual machining objects, such as workpiece, work step etc., and the current machining status of the machining object is monitored before, during and/or after the entire machining operation and is displayed as needed.
摘要:
To eliminate short-circuits between a countersink electrode and a workpiece during countersink erosion, when a short-circuit occurs, the countersink electrode is initially moved back by a predetermined path length (.delta.) along the previously travelled path from a first locus (P.sub.K) at which the short-circuit occurred to a second locus or intermediate point (P.sub.R) and it is established at that location whether there is still a short-circuit. If this is the case, the countersink electrode is moved in an upwardly sloping manner along a second path (R), which has a first angle (.alpha.) with respect to the working plane (AE) and has a movement component (R.sub.1) having a second angle (.beta.) with respect to a surface normal to the short-circuit or intermediate point (P.sub.K or P.sub.R). All the parameters (.alpha.,.beta.,.delta.,.vertline.R.vertline.) can be freely preselected and are variable during erosion.
摘要翻译:为了消除锪孔腐蚀期间锪孔电极和工件之间的短路,当短路发生时,锪孔电极最初沿着先前行进的路径从第一轨迹(PK)向后移回预定的路径长度(delta) 短路发生在第二轨迹或中间点(PR)处,并且在该位置处建立是否仍然存在短路。 如果是这种情况,则锪孔电极沿着相对于工作平面(AE)具有第一角度(α)的第二路径(R)以向上倾斜的方式移动,并且具有运动分量(R1),其具有 相对于垂直于短路或中间点(PK或PR)的表面的第二角度(β)。 所有参数(α,β,δ,| R |)可以自由预先选择,并且在侵蚀过程中是可变的。