丝杠预拉伸对机床进给轴的影响分析  

Analysis of screw prestretching to feed shaft of machine tools

作　　者：孙名佳[1] 刘阔[2] 朱铁军[1] 吴玉亮[1] 

机构地区：[1]沈阳机床(集团)有限责任公司高档数控机床国家重点实验室,辽宁沈阳110142 [2]吉林大学机械科学与工程学院,吉林长春130025

出　　处：《制造技术与机床》2016年第2期54-56,共3页Manufacturing Technology & Machine Tool

基　　金：科技重大专项(2013ZX04011011)

摘　　要：鉴于目前常见的丝杠预拉伸工艺缺乏科学试验数据的状况,在分析了已有文献研究不足的基础上,在数控车床上进行了详细的误差和温升测试。在不同的预拉伸状态下,分别测试了进给轴定位误差、热误差和关键点温升。分析了预拉伸对进给轴定位误差、热误差以及关键点温升的影响,给出了分析结果,为数控机床丝杠的装配提供了重要参考。Considering that the commonly used screw prestretching technique lacks of scientific test data, and on the base of analyzing the disadvantages of existing research, detailed tests are done on a CNC lathe. Un- der different prestretching conditions, the positioning errors, thermal errors and key points＇temperatures of feed shaft are tested. The influence of prestretching to the positioning errors, thermal errors and key points＂ temperatures of feed shaft are analyzed. The analyzed results are presented and provide an impor- tant reference for the assembly of lead screw of machine tools.

关 键 词：数控车床 进给轴 预拉伸 热误差 

分 类 号：TG659[金属学及工艺—金属切削加工及机床]