论文部分内容阅读
如图所示,上盖3、中轮4、下盖5铆合在一起的铆合件,为我厂产品专用工业缝纫机的“过线器”。由于铆合的零件不大,且上盖3,下盖5也仅有1mm厚,按常规分别进行上盖3、下盖5与中轮4铆合时,因中轮4上端为台阶状,上盖3铆合困难,且无法铆紧,同时,中轮4两端铆合处为薄壁,稍有不慎,就会使两端铆合处变形。以前,我车间铆合本零件时因上述原因造成的废品超过50%。针对这种情
As shown in the figure, the upper cover 3, the middle wheel 4 and the lower cover 5 are riveted together with rivets, which are the “thread feeders” for the industrial-use sewing machines of our factory. Since the riveted parts are not large and the upper cover 3 and the lower cover 5 are also only 1 mm thick, when the upper cover 3 and the lower cover 5 are riveted with the middle wheel 4, respectively, the upper end of the middle wheel 4 is stepped, Cover 3 riveting difficulties, and can not riveting, at the same time, both ends of the wheel 4 riveting at the thin wall, a little careless, it will make both ends of the riveting deformation. In the past, more than 50% of the scrap was produced as a result of the above-mentioned problems when the workshop was riveted. For this situation