电阻点焊测力装置的设计与试验分析

Design and experimental analyses of force measurement device of resistance spot welding

在电阻点焊过程中,电极动态压力与焊接质量有着密切的关系。当前的测量装置与方法很难准确地测量焊接过程中电极动态压力的变化。通过改进试验装置的壳体结构,使得电极力直接作用在压力传感器上,避免间接测量电极力达不到的灵敏度。改进装置与原测量装置的试验对比说明,此种结构装置能够较准确的测量焊接过程中的动态压力信号,灵敏度较高。改进了壳体结构的试验装置,为电阻点焊过程中实时测量电极动态压力的变化奠定了基础。

The dynamic electrode force in the resistance spot welding process is closely related to the welding quality.Therefore,the current designed experiment set and method is very difficulty to measure the dynamic electrode force.The current force measurement device was modified in this paper by directly applying the electrode force on the sensor.The comparison experimental results show that the modified device can measure the dynamic electrode force accurately.