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我厂是生产自行车的,过去车架焊接的夹具一般采用压板夹紧管件的形式,需要进行压紧和松开等动作,操作繁琐,效率太低。最近我厂设计制造的一种新型焊接夹具,操作灵巧,减轻了工人的劳动强度,工效显著提高。该夹具的关键在管件定位上,见图1,两旁的调节螺钉可调节弹簧压力,弹簧顶住球头销,球头销压紧管件起到定位效果,管件压入和脱离定位块都轻松自如,每根管件根据长短确定一～两件定位块,以确保管件的定位精度。球头销顶住管件的部位有限制,计算过程如下:见图2 假设压入管件和拉出管件对球头销产生的压力为N,倾斜角度为θ,弹簧对球头销的推力为T,这样,管
I plant is the production of bicycles, the past frame welding fixture commonly used in the form of pressure plate clamping tube, the need for compression and release and other actions, cumbersome operation, efficiency is too low. Recently I designed and manufactured a new welding fixture, dexterous operation, reducing the labor intensity of workers, significantly improved work efficiency. The fixture in the key positioning of the pipe, shown in Figure 1, adjustable screw on both sides of the spring pressure can be adjusted, the spring against the ball pin, the ball pin pinch pipe fittings play a positioning effect, the pipe is pressed into and out of the positioning block are comfortable , According to the length of each pipe to determine one or two positioning block to ensure the positioning accuracy of the pipe. Ball pin pin to withstand the parts of the pipe there is a limit, the calculation process is as follows: Figure 2 Suppose the pressure into the pipe fittings and pull out the pressure on the ball head pin N, tilt angle θ, the spring on the ball pin thrust T In this way, tube