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该装置能缩各种规格的丝对(螺纹中径);更换模具和调节垫后,还可镦各种规格的铆钉。经我厂大批生产证明,操作简便、稳定可靠,生产率比切削加工提高8～10倍,节约材料25％,质量符合要求。工作原理(如图):当冲头行至上止点时,将元料放入压紧螺塞的孔内,冲头压下时先缩下端(因工件下端直径大于上端直径),缩到顶住下退料杆17时开始缩上端,两头一次缩成后,冲头上升,于是横梁29在下退料棘轮25
The device can shrink a variety of wire pairs (thread diameter); replacement molds and adjust the pad, but also upset a variety of rivets. I plant a large number of production proved that easy to operate, stable and reliable, productivity than cutting increased by 8 to 10 times, saving 25% of materials, quality to meet the requirements. Working principle (pictured): When the punch line to the top dead center, the material into the hole in the compression screw plug, punch first reduced when the end down (due to the diameter of the lower end of the workpiece is larger than the diameter of the top), shrink to the top Live under the back bar 17 began to shrink the upper end, both ends of a contraction, the punch up, then the beam 29 in the next reloading material ratchet 25