基于单片机的普通车床自动化改造——机械部分设计.docVIP

2008届本科毕业论文（设计） 论文题目： 机械部分设计 学生姓名： 所在院系： 机电学院 所学专业： 导师姓名： 完成时间：200年月日 Based on SCM Automation of the ordinary lathe The automation of general machine tools is a reasonable choice in the NC system, under the premise.Lathe and then the general transformation of appropriate machinery.To enable the transformation of a better precision machine tools to maintain, In addition to the extent possible, to reduce electrical and mechanical failure at the same time, should give full consideration to the wear-resistance machine parts,Circuit extremely election for control of the CNC control system,After the transformation of the ordinary lathe is targeted, vertical and horizontal linear interpolation, circular interpolation, a cycle of processing and thread processing, and other functions, Feed servo system using open loop stepper motor control system, guaranteed under the premise of precision machining to simplify the structure, reduce costs; feed servo system uses open loop stepper motor control system, guaranteed under the premise of precision machining simplified structure And reduce costs; Automation of the CNC lathes used MCS-51 series MCU expansion of computer control systems, computer numerical control systems, in addition to CPU, but also include the expansion of program memory, and expansion of data storage, I/ O interface circuits; Including to enter an order processing procedures and controls the keyboard, can display data processing and machine status information display, including the isolation circuits and optoelectronic stepper motor drive circuit, In addition, the system should also include the thread processing using photoelectric pulse generator and other auxiliary circuit. Mechanical design for the main part of screw nut, such as gear selection and the corresponding design parameters to ensure that their basic requirements. Key words: general machine tools,SCM,automation,transformation,NC; 目 录 1. 前言 5 2 设计要求 5 2.1 总体方案设计要求 5 2.2 设计参数 6 2.3 其它要求 8 3 进给伺