椭圆孔扩孔性能的实验研究

RESEARCH FOR EXPANDING FEATUREOF ELLIPTIC HOLE

通过对椭圆孔的扩孔实验，认为椭圆孔的扩孔性能与其长短轴的比例有关．在长短轴比ａ／ｂ不大于１．２时．对扩孔性能的影响不大．但当ａ／ｂ大于１．２时．对扩孔性能影响较为显著。

Acording to the expanding experiment of elliptic hole, expending feature of elliptic hole isconnected with rate of major axis and minor axis of the hole. There is no more effet on the expanding feature when the rate of major and minor axis (a/b) is not more than 1. 2. However,ithas obvious effct on the expanding feature when a/b is more than 1. 2.