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我厂在加工图中双点划线所示的曲轴时,设计制造了车、磨夹具,在C6140车床和M131万能磨床上加工了曲拐偏心为45±0.05mm、轴径圆度为0.05mm、表面粗糙度Ra0.08的曲轴,收效较好。心轴2与圆盘精加工后组装在一起并焊牢,保证偏心距e在公差范围内,同时在心轴2左端加工出B型中心孔并精研,以便磨加工时使用。用标准活顶尖和一圆盘组装焊牢,组成右夹具体4,与左夹具体对应,偏心距e
When machining the crankshaft shown by the two-dot chain line in our factory, we designed and manufactured the car and the grinding fixture. The crank eccentricity was 45 ± 0.05mm on the C6140 lathe and M131 universal grinder, and the roundness of the shaft was 0.05mm , The surface roughness Ra0.08 crankshaft, better effect. The mandrel 2 is assembled with the disc after finishing and welded firmly to ensure that the eccentricity e is within the tolerance range while the center B of the center of the mandrel 2 is machined and lapped for use in the grinding process. With a standard live top and a disc assembly welding jail, the composition of the right clamp 4, corresponding to the left clamp body, eccentricity e