在东风型载重汽车的管路系统中,大量采用联管螺母。五吨车共用3种51件,以其中批量最大的 M18为例,我厂现行的工艺方案一直是“车削→攻丝→电镀。”材料用Y15六方料,利用率低,仅为40.6%。每年要白白浪费掉148吨易切削钢,价值12.6万元。为此,设计“冷成形→攻丝→电镀”新工艺方案,以取代老工艺。 In the Dongfeng truck pipe system, a large number of joint nut. Five tons of vehicles share three kinds of 51, with the largest batch of M18, for example, our current process scheme has been “turning → tapping → plating.” Material Y15 six-party material, low utilization, only 40.6%. 148 tons of free-cutting steel are wasted every year, worth 126,000 yuan. To this end, the design of “cold forming → tapping → plating” new process to replace the old process.