【作者】 白海清；

【导师】 李言；

【作者基本信息】 西安理工大学 ， 机械电子工程， 2007， 硕士

【摘要】 本论文课题是陕西省数控加工技术重点实验室科研项目,利用工控机和运动控制器对X、Y、Z、A、B五个坐标进行控制,采用位移检测装置对数控装置执行件的位移进行检测的开放式数控技术试验台,目的是为使研究者和实验者充分了解和掌握数控环节及数控过程和运动控制卡的控制特性搭建的一试验平台。本文通过对国内外开放式数控系统的研究,分析比较了几种开放式数控系统的开放途径和体系结构,最终确定采用“PC机+可编程运动控制器”的方式来构造该数控试验工作台。本设计把PMAC运动控制卡及其扩展卡放入控制箱,通过上位机——工业控制机(IPC)标准串口通讯,再配上交流伺服电机和步进电机、伺服驱动器、编码器和直线光栅尺等,构成一个模块化的数控系统。在对试验平台机械结构进行设计的过程中,主要对滚珠丝杠螺母副、滚动直线导轨副和蜗轮蜗杆式转台进行了计算、校核和选用,确保了机械传动部件的精度和刚度,使之满足系统的要求;通过计算,选择了电气驱动部件,包括交流伺服电机和步进电机及其伺服驱动器、编码器和直线光栅尺;基于Windows操作系统,利用Visual Basic建立了控制软件界面,应用PMAC的G代码解释程序、M代码解释程序和T代码解释程序编写了试验台的运动程序,实现了工作台的加、减速等控制和直线、圆弧等动作。通过对该试验台的调试和检测,试验台的性能指标达到了设计要求。更多还原

【Abstract】 This thesis is the project of Shaanxi Province Key Laboratory of NC Technique, using Motion Control Card and IPC for the controlling of the five axises X, Y, Z, A and B. It is an ONC test-bed which detects the displacement of numerical control by its displacement detecting device. It aims at all researchers and experimenters can sufficiently understand as well as master the controlling characteristics of numerical control process and Motion Control Card through this test-bed.Through the research of open-type NC system home and abroad, this thesis analyzes and contrasts several open modes and system structures of NCS. It finally adopts the“IPC+PMAC”mode to establish the test-bed. This design puts PMAC Motion Control Card and its development card into the controlling case and communicates with IPC through serial-port. Then, it matches AC servo motors, step motors, servo drivers, encoder and grating rulers to form a modular NC system.In the process of the designing of the mechanical structure of this test-bed, the ball screw assembly, roll linear guide way assembly and worn gear pair turntable are firstly main devices to calculated, checked and attached, as it can ensure the high precision and rigidity of the mechanical transformation devices, as well as fulfill the requirement of the NC system. Secondly, it selects electrical components through calculation, including AC servo motors, step motors, its servo drivers, encoders and grating rulers. Thirdly, basing on Windows Operating System, it establishes the software interface by Visual Basic. The motion program of the test-bed which is applied to carry out the acceleration and deceleration control, as well as linear and circular movement of the test-bed, has been developed by G code explanation program, M code explanation program and T code explanation program of PMAC.Through the detection and debug of this test-bed, the performance index of it has fulfilled the designing requirement.更多还原