1、 毕业设计(论文) 第I页 CA6140 卧式车床经济型数控化改造 摘 要 由于目前国内的数控机床数量需求量大，达到 300 万台之巨，要进行全部翻新在时 间，物质上尚不具有足够的条件，为了达到的条件，为达到较高精度，实现较好的经济 性，对普通车床实行数控开环改造。 本次设计着重对 CA6140 普通车床的纵横向进给系统改造，并对纵横向进给伺服系 统齿轮箱进行改造。本次设计作了下面的一些工作： 1 机械部分采用了一级齿轮传动，以 BF 型步进电动机作为驱动源，以 CBM/CDM 滚珠丝杠作为重要元件，以便更好的实行软件控制； 2数控部分采用MCS-51中的8031作为主控芯片建立一套单片机应用
2、系统。 扩展I/O 接口用 8155 芯片及外存储器，采用地址锁存和译码器。 3 SolidWorks 造型，包括软件的应用和对车床的实体建摸。 关键词：数控机床改造、单片机, 滚珠丝杠 BF 型步进电机 SolidWorks 毕业设计(论文) 第II页 ABSTRAC Because of the great number of machine tools in our country ,the number is3,000,000.It is impossible to renew them all without enough time and materialTo reform par
3、t of old ones with Numerrical Control(nc) Open-Loop control System to get high precision and high economy is a good way. The design emphases on the reform of lengthwise and axial feed systems, the fear box of the axial system, too.some work has been in the paper: (1) Based on the one-level driving ,
4、 the style BFstepper Motor which acts the Soure of power, the CDM/CBM screw ball which is the important transmission element, the part of machinery realizes the software control. (2) The numerical control partially uses in MCS-51 8031 to do primarily controls the chip to establish a set of monolithic integrated circuits application system。 Expands the I/Oconnection with 8155 chips and the external memory, uses the address lock to save with the decoder (
