The self-aligning ball bearing outer ring raceway was lapped by original the ointment cloth and manual method.This original lapping method may cause problems such as lower roughness,uneven lapping and dirty raceway.For solving the above problems, the lapping process was improved in order to use the lapping machine automatic process instead of the original manual method,use the oil stone instead of the ointment cloth,improve work efifency and product quality.%调心球轴承外滚道精研原来采用手工油膏布抛光方法，造成滚道粗糙度低、精研不均匀、滚道不清洁等问题。针对上述问题，对精研方法进行了改进，用精研机自动加工代替手工加工，用油石代替油膏布，提高了工作效率和产品质量。
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