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用切削加方工法制造衬套,生产效率很低.并且浪费材料。图1所示的衬套,较好的制造方法是用带料在压力机上安置自动送料装置的连续模内进行压制。图1是用带料黄铜68或69在连续模内压制开口衬套的程序。在压制时工步的顺序是:1.冲孔;2.压油槽;3.矫正;4.按衬套长度从带料侧刃裁切;5.垂直于带料切口;6.带料被切部分校直;7.被切部分预弯;8.9.第二次预弯(使被切下部分呈椭圆形);
Producing bushings with cutting and finishing methods results in low productivity and material waste. The preferred construction of the bushing shown in FIG. 1 is to use a strip of material to be pressed in a continuous mold in which the automatic feeding device is positioned on the press. Figure 1 shows a procedure for pressing an open bushing in a continuous mold with a strip of brass 68 or 69. The sequence of working steps during pressing is: 1. punching; 2. pressure tank; 3. rectification; 4. cutting according to the length of the bushing from the strip side cutting edge; 5. perpendicular to the strip cutting; Cut part of the straightening; 7 cut part of the pre-curved; 8.9 second pre-curved (so that the part was cut oval);