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湘潭钢铁厂轧钢分厂250线材轧机,用了很多内径定心的深孔内花键人字齿轮轴。由于轴长、孔深、人字齿轮精度高、材质硬、重量大、孔中又有内花键,国内又没有合适的机床加工这种内花键,十几年来是备品订货中的老大难,一直没有解决,影响了线材轧机的检修,因而线材生产也受到了影响。在毛主席革命路线的指引下,75年二季度湘潭钢铁厂机修分厂广大职工发
Xiangtan Iron and Steel Plant rolling mill 250 wire rod mill, with a lot of diameter centering deep hole splined herringbone gear shaft. Due to the shaft length, hole depth, the accuracy of herringbone gear, material hard, heavy, there are splines in the hole, there is no domestic machine tool machining this internal spline, more than 10 years is the long-standing reserve orders , Has not been solved, affecting the wire rod mill maintenance, wire production has also been affected. Under the guidance of Chairman Mao’s revolutionary line, the 75-year second quarter of Xiangtan Iron and Steel Plant mechanic branch general staff hair