1.By way of improving the superfinishing process,the appearance quality and surface roughness of steel balls,together with the productivity,were increased.

1.通过改进超精研加工工艺及加工过程,提高了钢球的外观表面粗糙度及生产效,使该类轴承的性能有了进一步的提高。

2.Taking the superfinishing of thin-wall hole machining as an example, the design and application of combined carbide core drill and reamer are introduced.

2.以本厂簿壁孔精加工为例，介绍了硬合金扩铰复合刀具的设计、结构参数、使用情况及应用效果。