几年来,我厂在试制短圆柱滚子过程中,经常发生成品滚子倒角大小超过产品图纸公差要求,外径和端面以及两端面的座标尺寸不对称等毛病,倒角座标太小,有时甚至成为尖角,造成边缘应力集中,影响轴承寿命。倒角太大,造成外径(或端面)的工作长度减小,同样影响轴承寿命。造成滚子倒角过大,过小,座标不对称的主要原因是原模具设计方法不合理,改进设计后,并通过最近一个时期来的实践证 Over the past few years, I plant in the trial short cylindrical roller process, often occur more than the finished product roller chamfer size tolerances of product drawings, outer diameter and end face and both ends of the coordinates of the asymmetric dimensions and other problems, chamfer coordinates too small , And sometimes even become sharp corners, causing edge stress concentration, affecting the bearing life. Chamfer too large, resulting in the outer diameter (or face) of the working length decreases, the same impact bearing life. Roller chamfer caused by too large, too small, the main reason for asymmetric coordinates is the original mold design method is unreasonable, improved design, and through the practice of a recent period of evidence