【作者】 黄万潮；

【导师】 李克天；

【作者基本信息】 广东工业大学 ， 机械电子工程， 2007， 硕士

【摘要】 本文研究开发一套开放性的数控综合实验台架。目的是适应目前数控教学的需要，解决数控教学设备单一和实验设备数量少的突出问题，增加数控教学实验的新品种和提高实验课教学质量。论文研究开发出一套台式模拟真实数控机床功能的综合实验台架。本文分别对开放性数控综合实验台架的机械部分、软件部分和电子部分进行了研究，最后通过实验对整个台架进行误差的分析。(1)机械部分：利用solidworks软件对台架的机械部分-XY工作台进行建模，在确保机械传动部件精度和刚度的前提下选用满足要求的滚珠丝杆、滚动直线导轨、光栅等部件，完成实验台架的机械部分设计。(2)软件部分：以VB.net为平台，编写实验台架的软件控制系统，系统包括人机界面、译码函数、插补函数和附加功能等。(3)电子部分：采用步进电机控制集成芯片L297和步进电机桥式驱动芯片L298进行步进电机驱动模块的设计和组装，步进电机的精度符合实验的要求。使用可编程逻辑器PLD和单片机AT89S52设计光栅的细分辨向和采集电路，实现实验台架的闭环控制。(4)对整个实验台架进行整体调试，精度测量和误差分析。更多还原

【Abstract】 In order to improve the current complexion of CNC teaching: both less quantity and low quality of the CNC equipments, and to increase new experiments to the CNC teaching and improve the quality of CNC teaching, this thesis did a lot of research and developed a new set of experimental equipment, which is the open CNC Experimental Platform, this equipment, taking the real CNC machine as the prototype, can simulate main functions of the real CNC machine.Generally, this thesis devided the open CNC experimental platform into three parts, they are the mechanical part, software part and electronic part. And this thesis also analyse the precision of the whole platform.(1) The mechanical part: the CAD software, Solidwork, is used to bulit the general model of the main component of the platform-XY table. Base on the reasonable precision of the transmission, it choose the ball screw, linear roller guide, grating, and the other components to build the mechanical part of the platform.(2) Software part: this thesis programmed the control system of the platform base on the VB.net, including Man machine Interface, coding function, interpolation function and several additional functions.(3) Electronic part: stepper motor controller L297 and dual full-bridge driver L298 are used in the design of the module of the stepper drive, and make the precision meet the need of the platform. Beside this, there is another module in the platform, called discerning direction and subdivision module, it is built up by PLD and singlechip AT89S52. It can achieve Closed-Loop Control with this module.(4) The thesis presented the measurement of the precision of the platform, and analyse the causes of the error.更多还原