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我厂引进德国FMS—1500—Z柔性加工系统的侧铣头,加工精度不合格,光洁度达不到要求,噪音大.经检查发现主轴径向跳动和窜动均超差0.08mm(精度要求两项均为:0.003～0.005mm).侧铣头主轴拆卸下来后,发现主轴前单列向心推力球轴承,五套一组,完好无损.后单列向心推力球轴承SNRc71902H型.两套一组,背靠背组装,组装中间没有隔垫,如图1所示.该轴承外环滚道、内环滚道、钢球均磨损严重,失去精度.如从国外进口需时3个月以上,且价格较高.
I plant the introduction of Germany FMS-1500-Z flexible processing system side milling head, machining accuracy unqualified, finish less than the requirements of noise.After inspection found that the spindle radial runout and movement are ultra-poor 0.08mm (accuracy requirements of two Items are: 0.003 ~ 0.005mm) .Short milling head spindle removed, the spindle was found before the single row to the heart of the thrust ball bearings, a group of five, intact. Single row radial ball bearings SNRc71902H type. Two sets of a , Back-to-back assembly, there is no septum assembly, as shown in Figure 1. The bearing outer raceway, the inner raceway, the ball are serious wear and tear, loss of accuracy .If imported from abroad takes more than 3 months, and the price Higher.