高性能电主轴综合性能集成测试系统研制  

Research and design of comprehensive test table for high performance motorized spindle

作　　者：舒强[1,2] 胡秋[2] 米良[1,2] 

机构地区：[1]国家机床产品质量监督检验中心(四川),绵阳621900 [2]中国工程物理研究院机械制造工艺研究所,绵阳621900

出　　处：《现代制造工程》2017年第7期126-132,共7页Modern Manufacturing Engineering

摘　　要：采用直驱方式传动的电主轴传动链短,具有调速性能好和精度高的特点,在数控机床上得到普遍应用。传统电主轴性能检测偏重于静态特性,对动态特性关注度不足。以加工中心高性能电主轴为测试对象,搭建了综合性能测试平台。介绍了动态回转误差的评定和测试方法,获得了不同转速下电主轴径向和轴向的回转误差。采用在线均值滤波和离线无限冲击响应低通滤波分离电主轴回转误差和偏心量得到电主轴热变形,获得了同商业热效应测试仪器可比的测试精度。研制了基于电力测功机的调速负载特性测试系统,获得了电主轴的机械特性和电流曲线。利用模态试验系统获得了电主轴径向和轴向的频率特性曲线及对应的固有频率。Motorized spindle characterizing by short transmission chain is widely used in CNC machine tools for its high speed and accuracy. Conventional test for spindle emphasizes on static characteristic. A comprehensive test table is designed for machine center motorized spindles. Based on the evaluation and test method introduced, the geometric accuracy of axes of rotation is meas- ured, including synchronous and asynchronous error for both radial and axial directions under different speeds. By the method of in-situ average filter and off-situ low-pass filter, thermal deformations are measured and the accuracy is comparable with commer- cial spindle thermal test instruments. A load and speed characteristic test system is introduced and the maximum torque is meas- ured. Using modal test system,the frequency response characteristic is achieved with the measured F＇ natural frequency in both radial and axial directions.

关 键 词：电主轴 性能测试 动态回转误差 热变形 动态特性 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]