江西理工大学（2015届）本科生毕业设计（论文）
江 西 理 工 大 学 本 科 毕 业 设 计（论文） 题 目：激光雕刻机设计及主要零件工艺设计 专题题目： 学 院：机电工程学院 专 业：机械工程及自动化 班 级：机械113班 学 号：40 学 生：钱伟伟 指导教师： 宋小军 职称：讲师 时间：2015年6月10日
江西理工大学（2015届）本科生毕业设计（论文）
摘 要
激光雕刻的适用对象主要是精密细小和形状复杂的零件，本文设计了一台由PLC控制的激光雕刻机床，主要完成了：
（1）雕刻机的基本结构和自由度分析，机床整体结构设计，X、Y轴的结构设计计算、传动轴、直线导轨的选择及其强度分析；对雕刻机的运动速度和控制精度进行分析，激光雕刻机传动方案设计。几种雕刻机常用的传动机构比较，然后再根据激光雕刻机的具体要求确定各个模块的传动方案。
（2）对常见的传动机构：齿轮传动机构、丝杠螺母传动、链传动机构，齿形带传动机构等进行比较，结合各自的优缺点确定雕刻机的传动机构，包括雕刻机激光器X方向移动方案，Y方向移动方案。
（3）步进电机的选型以及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。
（4）对雕刻机的一些主要零件，如垫板、光轴滑块、短轴进行工艺分析与制定，进一步熟悉其加工的具体过程。
（5）了解PLC控制系统的类型及功能，以及PLC机型的选择、对被控对象激光器的运动进行分析，明确激光器的移动要求，制定电气控制系统方案。
总结：本文设计的激光雕刻机可以对木材，纸张，钢材等材料进行精密雕刻，大大缩短了雕刻时间，提高了生产效率，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。
关键词：PLC；激光雕刻机；结构设计；工艺设计；
江西理工大学（2015届）本科生毕业设计（论文）
ABSTRACT
Suitable for laser engraving are mainly small and precision parts of complex shape, we design a laser engraving machine controlled by a PLC completed a major:
(1),The basic structure of the engraving machine and freedom analysis, the overall structure of the machine design, X, Y axis design calculations, drive shaft, linear guide rail select and strength analysis; speed engraving machine motion control accuracy and analysis, Laser engraving machine drive design. Comparison of several common transmission engraving machine, and then determine the transmission scheme of each module according to the specific requirements of laser engraving machine.
(2),The common transmission: gear drive mechanism, screw nut drive, chain drive mechanism, belt drive mechanism were compared, with their advantages and disadvantages to determine the engraving machine transmission mechanism, including the X direction laser engraving machine program , Y direction scheme.
(3),Analysis and design and the selection of the stepper motor with the stepper motor for the feed drive of the drive system and the transmission mechanism of calculation.
(4),Carving some of the major components, such as plate, axis slider minor process analysis and formulation, more familiar with the specific process of its processing.
(5),To understand the type and function of PLC control system, as well as the choice of models PLC, laser controlled object motion analysis, a clear request to move the laser, the development of electrical control system solutions.
Summary: This design laser engraving machine can be wood, paper, steel and other materials for precision engraving, carving greatly reducing the time and improve production efficiency, thus CNC laser cutting in China's manufacturing industry is playing a huge advantage.
Keywords:PLC;Laser engraving machine;Structural design;process design;