《机械工人》冷加工1997年第5期小经验栏目中,《简易弯薄壁管夹具》一文介绍了一简易弯管夹具,还介绍了夹具的胎轮和从动轮的剖面应为半圆形且与圆管的半径相等。经我们多次试用,弯出的圆管不太理想,截面成椭圆形,这是什么原因造成的呢? 经过认真分析,终于找到了原因,从 “Mechanical workers” cold processing 1997 No. 5 small experience column, “Simple bending thin-walled tube fixture,” a paper introduces a simple curved tube fixture, also introduced the fixture of the tire and driven wheel section should be semi-circular and Equal to the radius of the tube. After many times of our trial, curved pipe is not ideal, cross-section oval, which is what caused it? After careful analysis, finally found the reason, from