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Development of twin-type resistorless power supply for electrical discharge machining

机译:电气放电加工双型无电阻电源的开发

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摘要

A new resistorless power supply equipped with twin generators is developed for electrical discharge machining. Each generator has no resistor hut has a coil, a group of transistors and diodes to restrict the discharge current. The two generators are operated alternately, thus generating two triangular currents with a time lag. The two currents are summed on a tool electrode, and consequently, a smooth current is generated. This power supply has the following advantages: 1) There is no power dissipation of the resistors. 2) The required power supply is small. 3) The current wave is smooth and his easy to generate not only a high current but also a low current for finish machining. 4) It is easy to change the current waveform and the rise time of the current, by controlling the on/off duly ratio of the transistors. The principle and tested results of this power supply are described.
机译:为电气放电加工开发了一种配备有双发电机的新型电阻电源。 每个发电机没有电阻器小线圈,一组晶体管和二极管以限制放电电流。 两个发电机交替操作,从而产生具有时间滞后的两个三角电流。 两个电流在刀具电极上求和,因此,产生平滑电流。 该电源具有以下优点:1)电阻器没有功耗。 2)所需的电源很小。 3)电流波是光滑的,并且他的易于产生高电流,而且对于精加工加工的低电流。 4)通过控制晶体管的ON / OFF比率,易于改变电流波形和电流的上升时间。 描述了该电源的原理和测试结果。

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