摘  要

 
数控车床采用数控回转机构可以在一次装夹中完成多道工序加工，缩短辅助时间，减少多次安装所带来的误差。本课题通过对数控回转机构的机械结构以及电气控制进行了研究，探索数控回转机构的组成和工作原理。通过所学专业知识，完成了数控回转机构机械部分与电气控制部分的设计，绘制了三维实体装配图及电气控制原理图，编制了数控回转机构的控制软件。本课题的创新之处在于在设计延时锁紧功能部件的同时，实现了机构电动机意外短路的保护功能。问题的解决在于采用电磁式过电流继电器来监测电动机中的电流大小。
 
关键词：数控化设计;回转机构；蜗杆副；微机控制；换刀装置

Abstract

With a single setup of NC rotary turret , CNC lathe can be completed in multiple processes processing, reducing support time and errors which caused by multiple installation. This topic of NC rotary turret on the mechanical and electrical control system conducted to explore the NC rotary tool holder of the composition and working principle. With the knowledge learned of before, I have finished the completion of the NC rotary tool holder of the mechanical parts and electrical control part of the design, drawing and assembly drawings and three-dimensional entities, electrical control schematics,and developed NC rotary turret control software. The innovation of this issue is delayed locking features in the design, while achieving a turret motor accident short circuit protection. The solution to the problem is making use of electromagnetic over-current relay to monitor of the current size of the motor.
 
Key words:  NC Transformation ；rotary turret；worm gear pair；micracomputer control；tool-changer