毕业设计--数控激光切割机X_Y工作台部件及单片机控制设计

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1、1 毕毕 业业 设设 计计 题 目 数控激光切割机 XY 工作台部件及单片机控制设计 分 院： 机电工程分院 专 业： 机械设计制造及其自动化 班 级： 2 摘 要 激光切割的适用对象主要是难切割材料， 如高强度、 高韧性材料以及精密细小和形状 复杂的零件， 因而数控激光切割在我国制造业中正发挥出巨大的优越性。 随着微电子技术、 计算机技术的发展，数控系统也在不断进步。和普通机床相比，数控机床具有刚度、抗振 性、热变形小、无间隙、低摩擦、高速下运行平稳、定位精度高、跟踪性好等一系列特点。 本文设计了一台单片机控制的数控激光切割机床，主要完成了：机床整体结构设计， Z 轴、XY 轴的结构设计计算

2、、滚珠丝杠、直线滚动导轨的选择及其强度分析；以步进电机 为进给驱动的驱动系统及其传动机构的分析设计计算；以 8031 为主控芯片的数控系统硬 件电路设计、系统初始化设计及系统软件方案设计和步进电机的控制程序设计。 关键词关键词: :CNC，激光切割机床，结构，设计 3 Abstract Laser cutting machine tool was usually used for the hard-cutting material, such as high-strength material, high precision ductile materials, and smart and c

3、omplicated components. So, CNC laser cutting has been playing an important role in Chinas manufacturing industry. Along with the micro electron technology ,the computer technology development ,the numerical control system is also progressing .Has the rigidity high with the ordinary engine bed ,the v

4、ibration-proof ,the small thermal deformation ,ceaseless ,the low friction ,high speed under moves steadily ,the pointing accuraly high ,the track is good and so on a series of merits . This paper describes the design of a SCM-controlled CNC laser cutting machine tools. More attention was paid on th

5、e overall machine design, Z axis, XY axis in the design, ball-screw and the choice of linear motion guide and intensity analysis; the drive system into which stepper motor was put and the analysis of the drive system design;8031 chip was mainly used for the design of hardware circuit, the design of system initialization and the design of stepper motors controlling program. Key words: CNC, laser cutting machine tools, architecture, design 4 目 录 摘摘 要要 ABSTRACT