微细激光焊接中PSD定位方法研究  

The Research of PSD Locate Method in Micro Laser Welding Fields

作　　者：张秋鄂[1] 张荣[1] 董桦[2] 

机构地区：[1]长春理工大学理学院,吉林长春130022 [2]长春理工大学研究生学院,吉林长春130022

出　　处：《应用激光》2010年第4期314-317,共4页Applied Laser

摘　　要：在精密微细激光焊接中,除对激光参数有严格要求外,对准焊点的位置是一个重要环节。为提高工作效率,研究以高分辨率位置敏感传感器(PSD)为核心,根据激光三角法测量原理,对微米级细丝定位。设计了一套位置探测系统。针对微细激光自动焊接存在的问题提出了一种精确定位方法。该系统采用二维步进电机驱动的工作台,可根据不同工件设计各种夹具。在X方向移动时,动态检测细丝的偏移量。通过计算机采集数据,软件计算,实时控制调整,适应激光精密焊接定位的要求。用激光粉末熔覆技术实现高质量、高可靠性的互熔焊接。In the field of micro laser welding, besides the special requirement in the parameter of lasers, the accurate location in welding points is also very important. To improve work efficiency, high-resolution position sensitive detector （PSD） is adopted as hard core. To locate micron filaments, the measurement principle of laser triangulation method is used. The position detec- tion system has been designed. This raise a method of precise locate with the problems of micro laser welding. Adopt two di- mension stepping motor drive the workbench, according to different workpieees to design the clamps. At the workbench moves in the X direction, the filaments offset is detected dynamic. It adapts the requirement of location in micro laser welding fields through the data collected, software calculated, real-time control to adjust by computer. Using laser powder cladding technology achieve inter-penetration welding of high quality and reliability.

关 键 词：激光焊接 精确定位 PSD 步进电机 粉末熔覆 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]