双工位数控转台可靠性试验技术及失效分析

摘要

针对加工中心关键功能部件数控转台进行了可靠性试验。在对数控转台故障数据以及失效机理分析的基础上，提出了数控转台可靠性试验方法，采用多种应力共同作用使得数控转台的潜在故障在较短时间内激发出来。试验后对试验过程中出现的故障进行了深入分析，并提出相应的改进措施。实践证明：本试验方法能有效地激发数控转台潜在故障，能够达到可靠性试验的目的。%In order to obtain the weak point of domestic machining centers and enhance the reliability, reliability test for the NC rotary table as one of key unit in machining center was carried out. The reliability testing method for NC rotary table was proposed based on the analysis of failure data and failure mechanism, in which the potential fault in a short period of time was stimulated by using the multiple stresses. The testing failure data was analyzed, and the improving methods were put forward. It is indicated that the testing method can achieve the purpose of reliability test of NC rotary table effectively.