毕业设计--CA6140车床进给系统的数控改造.docVIP

2013届毕业论文 题 目：CA6140车床进给系统的数控改造 姓 名： 学 院： 机电学院 专 业： 机械设计及其自动化 班 级： 学 号： 指导老师： 2013年 05月03日 目 录 内容摘要························································1 关键词··························································1 Abstract························································1 Keywords························································1 绪论·························································2 CA6140车床进给运动数控改造的总体方案························3 2.1 设计任务·················································3 2.2 CA6140进给箱以及数控车床进给箱结构分析·················3 2.3 总体方案确定·············································3 3. CA6140车床数控改造中机械改造·······························4 4. CA6140数控改造的传动装置设计计算···························5 4.1 滚珠丝杠螺母副···········································5 4.2 纵向进给系统设计计算·····································6 4.3 滚珠丝杠螺母副的设计计算·································7 5. 步进电动机的选择············································12 5.1 步进电动机型号选择······································12 5.2 滚珠丝杠与电动机的连接··································12 6. 轴承的选择··················································1 设计小结·······················································13 致谢···························································13 参考文献 ······················································14 摘　要 本文介绍了普通数控机床中CA6140车床进给系统的设计改造过程，主要为机械元件的设计，包括滚珠丝杠、轴承、步进电机、和齿轮传动比的计算、选择与应用。针对现有常规CA6140普车床的缺点提出数控改装方案，提高加工精度和扩大机床使用范围，并提高生产率。改造后的机车，主运动实现自动变速，纵向、横向进给系统进行数控控制，并要求达到纵向最小运动单位为0.0脉冲，横向最小运动单位0.00脉冲，刀架要是自动控制的自动转位刀架，要能自动切削螺纹 Abstract This article concise language had the stress in the introduction ordinary numerical control engine bed the economy numerical control tool machine entered for the design process, mainly for mechanical part design, including ball bearing guide screw, bearing, stepper motor , and synchronized tooth profile belt computation,