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我厂在加工东方红20拖拉机二轴花键套外圆时,为了保证外圆和内孔的同心,原采用两顶针顶起,用鸡心夹传递切削力的工艺方法。这种方法操作不方便,工人劳动强度大,而且两头不能一次完工,效率很低,为此,我设计制造了如图所示结构的不停车夹具心轴。该夹具经过淬火、磨削加工,通过锥柄安装在机床主轴内,使用时临床将7°锥面加工一次,使7°锥面和机床主轴同心。将工件一端装上心轴,另一端采
I plant in the processing of Oriental Red 20 two-axis spline sleeve tractor sleeve, in order to ensure the concentric cylindrical and inner hole, the original use of two thimble jacking, with the transfer of cutting force chicken heart technology. This method is not easy to operate, workers labor-intensive, and the two can not be completed at a time, the efficiency is very low, therefore, I designed and manufactured the structure shown in Figure non-stop fixture mandrel. The fixture after quenching, grinding, taper shank installed in the spindle, the clinical use of the 7 ° cone processing time, the 7 ° cone and the machine spindle concentric. One end of the workpiece loaded mandrel, the other end mining