摘要
电力铁塔安装过程中两角钢预置孔位常出现错位,螺栓无法穿过,为解决这一问题,需要采用激光切割机进行扩孔切割。提出并设计了一套基于机器视觉的便携式激光切割打孔系统,实现了对远距离、高空铁塔上错位孔位的切割打孔作业。系统主要由激光器系统、控制与执行系统、传输线缆三部分构成。为保证设备便携,激光器系统由多个可拆解和组合的模块组成,设计并实现了将多束小功率激光器进行合束,从而达到大功率输出,实现高能量切割作业。控制与执行系统利用机器视觉进行图像采集与切割路径规划,以实现在地面完成对高塔上切割过程的监控和引导伺服系统完成自动切割。实验结果表明,机器视觉算法准确性高,切割效果较为理想。
In the process of power tower installation, the position of the preset holes of the two angle steels is often misplaced,causing the bolts can’t pass through. To solve this problem,the laser cutting machine is needed for reaming and cutting. In this paper, a portable laser cutting and drilling system based on the machine vision is proposed, which realizes the cutting and drilling of the displaced holes in the long distanced and high iron tower. The system consists of three parts : laser system, control and execution system , transmission cable. In order to make the device portable, the laser system is composed of several detachable and combined modules. Multiple low-power lasers are designed to combine beams, so as to achieve high-power output and high-energy cutting operation. The control and execution system uses machine vision for image capturing and cutting path planning, in order to complete the monitoring of cutting process on the tower and guide the servo to automatic cut on the ground. The experimental results show that the machine vision algorithm has achieved higher accuracy and better cutting effect.
作者
杜勇
吴军
覃绍先
罗鸣
张志强
李婷
曾庆影
DU Yong;WU Jim;QIN Shaoxian;LUO Ming;ZHANG Zhiqiang;LI Ting;ZENG Qingying(Maintenance Company,State Grid Hubei Electric Power Co.,Ltd.,Wuhan 430050,CHN;R&D Center,Tianjin Branch of Engineering Research Center for DPSSL ,Academy of Opto - Electronics,Chinese Academy ofSciences,Tianjin 300304,CHN;R&D Department,HARGLO Applied Laser Technology Research InstituteCo.,Ltd.,Tianjin 300304,CHN;Technology Department,Beijing XJD Technology Co.,Ltd.,Beijing 101100,CHN;School of Electrical and Information Engineering,Tianjin University,Tianjin 300072,CHN)
出处
《制造技术与机床》
北大核心
2019年第4期73-76,81,共5页
Manufacturing Technology & Machine Tool
基金
国家电网总部科技项目(52153216000R)
关键词
机器视觉
激光
切割
电力铁塔
machine vision
laser
cutting
power iron tower
