差速器轴承座是拖拉机的重要部件。由于该零件在生产过程中使用的夹具 ,不能保证精磨外圆(10 5ｈ6)跳动量 0 .0 3ｍｍ(见图 1)的要求。为了提高该零件的质量 ,设计了一套外胀六点盘式弹性磨夹具。通过长期使用表明 ,稳定了零件质量 ,提高了生产效率。外胀六点盘式弹性磨夹具 Differential housings are an important part of the tractor. Due to the jig used in the production of the part, the tolerance of 0.030 mm (图 105h6) run-out of the outer cylindrical part (图 105h6) can not be guaranteed. In order to improve the quality of the part, a set of six-point disc elastic grinding device has been designed. Through long-term use shows that the stability of the parts quality, improve production efficiency. Expansive six-point flexible disk fixture