避免三点接触临界条件的探讨

Critical Condition Research of Avioding Three Point Contact

三点、四点接触球轴承结构主参数之一原始垫片角β_0应依据转速和负荷等动态条件来确定。为确保避免在轴向最大位移下的三点接触状态,在设计时应采取减小原始垫片角的技术措施。同时,X_i宜取负偏差,R_i宜取正偏差,D_可按标准取规定值。在结构设计时,最小接触角与原始最大垫片角之差应在8°以上。

Initial shim angle of three or four point contact ball bearings, should be determined according to rotating speeds , loads etc. In order to avoid three point contact under maximum axial displacement, initial shim angle should be reduced in design, at the same time. Xi should be taken as regative deviations, Ri positive ones , and Dw standard values. The difference between minimum contact angle and maximum initial shim angle should be over 8 degrees.