高精度视觉型桌面贴片机系统研究  

Study of high-precision desktop pick-and-place machine with vision system

作　　者：王国庆[1] 张光泽[1] 张志新[1] 张善交 贺新刚[1] 

机构地区：[1]长安大学道路施工技术与装备教育部重点实验室,西安710021

出　　处：《工业仪表与自动化装置》2015年第4期12-15,共4页Industrial Instrumentation & Automation

摘　　要：针对目前国内桌面贴片机缺少视觉系统和贴装精度不足及成本高的问题,从提高机械系统精度、视觉对中系统、运动控制系统及操作软件系统等方面进行了研究,设计了步进电机闭环控制的高精度机械平台机构,实现了支持贴装0402封装元器件及QFP封装IC的精密贴装头和自动化供料机构,采用自主知识产权的异步多核可编程自动化控制器完成了五轴运动控制,应用Freeman链码实现了视觉对中系统中关键的轮廓提取,开发了上位机操作软件系统,经过测试整机系统实现了高精度贴装的目标。There are some problems about the current domestic desktop pick-and-place machine,such as the lack of vision system,the shortage of pick-and-place precision and the high cost. In order to solve these problems,the paper studied on the accurate machine system,the vision positioning system,the motion control system and the operation software system. It designed a high-precision machine platform driven by the closed-loop control of stepper motor,and accomplished the mechanism to accurately pick and place electronic components of 0402 and CEFP package outline and the automatic feeding mechanism. To achieve the five-axis motion control,the self-proprietary multi-core asynchronous programmable automation controller was adopted. It applied the Freeman chain code to accomplish the critical technology of the contour extraction on the vision positioning system,and developed the PC operation software system. The test results showed that it could achieve the goal of the high-precision picking and placing.

关 键 词：贴片机 贴装头 运动控制系统 视觉对中系统 步进电机闭环控制 

分 类 号：TH132[机械工程—机械制造及自动化]