C618型卧式车床横向进给数控化改造.doc

xxxxxxx 毕 业 设 计（论 文） 设计（论文）题目：C618型卧式车床横向进给数控化改造 2010年 4月 7日 摘要 20世纪中叶数控技术和数控机床的诞生标志着生产和控制领域的一个崭新时代的到来。 科学技术和社会生产力的迅速发展，对机械产品的质量和生产率提出了越来越高的要求。机械加工工艺过程的自动化成为实现上述要求的最重要的措施之一。它不仅能够提高产品的质量、提高生产率、降低生产成本，还能够极大地改善生产者的劳动条件。 数控机床的工作过程是将加工零件的几何信息和工艺信息进行数字化处理，即对所有的操作步骤和刀具与工件之间的相对位移，以及进给速度等都用数字化的代码表示。而经济型的数控改造则对数控机床有了更新的要求。即在不改变原来功能的前提条件下，还要特别讲究经济性、可靠性、性能优越等。所以，在改造的同时，尽量不要改变原来的结构。 本设计是对C618普通卧式车床进行数控化改造。为了实现把C618普通卧式车床改造成经济型数控车床，我针对此车床的主传动系统，X向进给系统进行数控改造，并增加了CNC装置和伺服系统。对进给系统，我把原先的滑动丝杠换成滚珠丝杠，以提高精度和效率，并由原先的手动控制，改造成由电动机控制。通过变频器实现主轴传动和进给机构的无级变速。通过单片机的设计，构成控制系统。 关键词：数控改造，滚珠丝杠. ABSTRACT Naissance that 20 century middle period few technique is with the few machine the bed scribe to produce with control coming of a brand-new ages of realm. The science technique bring upped with rate of production to the quantity of the machine product with the quick development of the social productivity more and more high request.The automation that machine process the craft process one of the most important measure of becoming to realizes the above requests.It can not only increase the product quantity,increase the rate of production ,lower the production cost ,and can be still biggest ameliorative production of labor term. Work process that few machine the bed will process the spare parts several why the information proceedswith the craft informations the arithmetic figure handle,then operation allly the step have with knife with of the work piece the code for of opposite moving,and entering giving the speed waiting all using the arithmetic figure mean.But few of the economic types then reform the logarithms achine bed contain new request.Namelystillwant the superior etc.of particular about and economic,dependable,function under not changes originally the function’s prior condition.Therefore,at reform at the same time ,and as far as possible don’t change original construction.????? This design is C618 ordinary vertical horizontal machine NC transformatio