旋转电弧传感器的结构优化及散热分析

Structure Optimization and Heat Dissipation Analysis of Rotating Arc Sensor

通过现用同轴旋转电弧传感器的长期试验,针对实际焊接中其存在的不足,对其结构进行了优化。摒弃了实际工作环境下不安全的水冷冷却方式,采用轴流式风扇与散热孔结合的方式散热;为避免试验中因焊接电流泄漏而击穿电机的现象,选用陶瓷材质的调心球轴承;为提高焊接保护气体的实时性,增加焊接的安全性,将保护气体的进气口下移,并设计了导气罩;最后,选用小体积电机,减小了旋转电弧传感器的体积及质量。水平直角焊接试验显示,新型旋转电弧传感器能够满足焊缝成形要求,在焊接自动化领域有很大的实用价值。

Through the long term test of the current coaxial rotating arc sensor, the structure was optimized in view of the shortage in actual welding. The insecure water cooling mode was abandoned in actual working environment, and the axial flow fan combined with the heat dissipation hole to dissipate heat was adopted. In order to avoid the breakdown phenomenon of motor due to leakage of welding current, the ceramic self-aligning ball bearing was selected. In order to improve the real-time performance of welding protective gas and increase welding safety, the air inlet of protective gas was moved down and the air guide cover was designed. Finally, the volume and quality of the rotating arc sensor were reduced by selecting a small volume motor. The horizontal right angle welding test shows that the new type of rotating arc sensor can meet the requirements of weld forming, and it has great practical value in welding automation field.