高速磨头主轴的内锥孔与两端外圆同心度要求为0.02毫米。采用以工件外圆定位装于内圆磨床的卡盘上进行校正的方法,不能保证其同心度精度的要求,原因是由磨床主轴的跳动和工件装卡调整误差产生的。为了解决同心度的加工问题,我们与磨工刘聚水、段文华同志制成了V型定位夹具(如附图),在万能磨床上磨削长轴内锥孔(或圆柱孔),孔与两端外圆的同心度达到0.01～0.02毫米。 High-speed grinding head spindle conical hole and both ends of the outer concentricity requirements of 0.02 mm. Cylindrical grinding machine with a cylindrical workpiece positioning chuck installed on the way to correct, can not guarantee the accuracy of its concentricity requirements, because the grinding spindle spindle and workpiece clamping adjustment error generated. In order to solve the concentricity of the processing problems, we and grinding workers Liu Junshui, Duan Wenhua comrades made a V-type positioning fixture (as the figure), in the universal grinder grinding long axis taper hole (or cylindrical hole), both ends Cylindrical concentricity reached 0.01 to 0.02 mm.