脚踏式点焊机由于它焊接速度快,使用方便,焊后疤痕小而应用极其广泛。但有个缺点即仅能调节电压和压力参数,其焊接时间长短由工人的脚操作,故随机变动,时间及其质量不能保证。而工人因劳动强度大,极易疲劳。 我厂从引进的德国90系列自动点焊机受到启发。由Q=0.24I~2Rt(Q为焊接热量、R为电极间等效电阻、I为极间电流、t为通电时间)可知:当工件一定、压力 Foot spot welding because of its fast welding speed, easy to use, small post-weld scar and extremely wide range of applications. But there is a shortcoming that can only adjust the voltage and pressure parameters, the welding length of time by the worker’s foot operation, so random changes, time and quality can not be guaranteed. The workers because of labor-intensive, extremely easy to fatigue. I plant from the introduction of Germany 90 series automatic spot welding inspired. From Q = 0.24I ~ 2Rt (Q is the welding heat, R is the equivalent resistance between the electrodes, I is the inter-electrode current, t is the energizing time). It can be seen that when the workpiece is constant, the pressure