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以前技术杂志有人介绍短头花键轴铣削夹具,其结构简单,工件是靠中心孔定位,抱紧轴端而夹持的,它定位准确,夹紧可靠,但用于滚铣超短头花键轴还有些问题。我厂产品零件有一个短头花键轴,两端轴径为φ25R_6,6齿矩形花键外径为φ32f_7,距两轴端都仅有17mm,在花键轴铣床Y631K上用φ80外径的滚刀铣削。其主要工艺过程为;先以中心孔定位滚铣花键,高频淬火后,又以中心孔定位磨花键外径。原工艺定为用反顶尖(不以中心孔定位),靠反锥自锁,顶住φ25轴端,将工件夹持在床头与尾座之间铣削,其问题是:变换了定位基准,而精车轴坯外圆对中心孔的跳动都在0.06～0.15mm,致使滚铣后花键轴外径跳动超差,淬火后磨削余量不匀,造成了一些废品。通过分析研究,我们设汁了具有弹性顶尖的梅
The previous technology magazine introduced short-head spline shaft milling fixture, its simple structure, the workpiece is located by the center hole, hold the shaft end and clamping, it is accurate positioning, reliable clamping, but for the ultra-short roll head hobbing Key shaft still some problems. I plant products have a short spline shaft parts, both ends of the shaft diameter φ25R_6, 6 teeth rectangular spline diameter φ32f_7 from both ends are only 17mm, spline shaft milling machine Y631K φ80 diameter Hob milling. The main process is: First, the center hole positioning hobbing spline, high-frequency quenching, and then the center hole positioning spline diameter. The original process is set to anti-top (not to the center hole positioning), by anti-cone self-locking, to withstand φ25 shaft end, the workpiece is clamped between the bed and the tailstock milling, the problem is: to change the positioning of the benchmark, The precision car billet cylindrical bore on the center hole in the 0.06 ~ 0.15mm, resulting in hobbing spline shaft diameter after beating tolerance, after grinding uneven grinding margin, resulting in some waste. Through the analysis, we have designed the top with a flexible plum