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本文主要研究了X502经济型中档精度数控铣床的纵向进给机构的设计及其改造。本文对数控铣床纵向进给系统的设计与改造方案进行了重点论述，对该机构的主要组成部件:滚珠丝杠副、交流伺服电机、联轴器等进行了设计计算与选型。其中对滚珠丝杠副、交流伺服电机的设计计算及选型作了详细论述。进行这一设计主要是为了进一步地提高数控铣床纵向进给机构的定位精度，重复定位精度以及改造手动进给装置，以使其能够可靠地运行，且能满足各项性能指标的要求,达到预期的结果,即满足设计任务书的要求。最后, 本文还对各个零部件进行了设计,并绘制该数控铣床纵向进给机构和工作台与滑台的装配图。此结构简单可靠,可应用于相似的各类数控铣床上。
关键词: 数控车床； 纵向进给； 设计； 改造
This article mainly told the research, the designing and transformation on the longitudinal motion system and track lubrication mechanism of CA6140 economic medium precision NC machine. The article made a brilliant exposition on the designing and transformation scheme of the longitudinal motion system and track lubrication mechanism of NC machine. The article also exposed brilliantly the mechanism’s mail parts: the ball-race bearing, the servo-electric machine, the coupling and so on. Doing the design is for the sake of improving the site precision, duplicate site precision and transformating the Longitudinal motion system .So it can work credibility, meet the request of every property norm, come to the expected consequence, and fulfill the require of design assignment list. Besides, the author has designed and drawed all of mechanism’ parts, and also drawed the assemble chart. This mechanism is simple and reliable, it can apply to every similar NC machine.
Key words: NC machine；longitudinal motion；design
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