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国营平原机械制造公司所属平原五厂,为提高螺纹环规的使用寿命,采用了硬质合金材料,并自选设计制造了硬质合金螺纹环规专用电火花加工机床。采用了硬质合金材料及电火花加工法来制造螺纹环规,可省略复杂的加工工序及加工工具,提高了加工质量,特别是使用寿命要比钢质螺纹环规提高几倍以至几十倍。硬质合金螺纹环规的专用电火花加工机床由电源部分——应用RLCL弛张式脉冲发生器,进给控制系统——应用伺服电机,蜗轮蜗杆传动机构,导向螺母进给机构及继电器控制线路,工作液循环
In order to increase the service life of the thread ring gauge, the Plain Five Factory under the State-owned Plains Machinery Manufacturing Company adopted carbide materials, and designed and manufactured the special EDM machine tool for the hard alloy thread ring gauges. The use of hard alloy materials and EDM methods to manufacture screw ring gauges can eliminate complicated machining procedures and machining tools and improve the quality of machining. In particular, the service life is several times to several times higher than that of steel screw ring gauges. . Dedicated EDM machine tools for hard alloy thread ring gauges from the power supply section - RLCL relaxation pulse generator, feed control system - application servo motor, worm gear drive mechanism, guide nut feed mechanism and relay control circuit , working fluid circulation