摘要：采用粉末冶金注射成型技术生产缝纫机梭芯套的新生产工艺, 该工艺主要有制取粒状原料、喂料、模具制造、注射成型、脱脂、烧结和质量检验7道工序, 较之传统方法的裁料、冷镦、冲压、磨削、拉、钻、焊接等60余道工序的生产工艺, 大大提高了生产效率。采用新工艺, 能使梭芯套一次成形, 不需要机加工, 不产生切屑, 并且原料可以重复使用, 利用率达到100%。

关键词：梭芯套；粉末冶金；新工艺；生产效率

Abstract：The use of powder metallurgy injection molding process to produce a new bobbin case of sewing machine was studied, which included 7 processes, such as the preparation of granular material, feed, mold manufacturing, injection molding, degreasing, sintering and quality inspection. Traditional methods included more than 60 processes, such as cutting material, cold forging, stamping, grinding, pulling, drilling, welding, etc. The new technology greatly improves production efficiency. Using the new technology, which enables forming a bobbin case at one time.The production process does not need to be machined, so won't produce chips, and the raw materials can be reused, utilization rate of 100%.

Keywords: bobbin case；powder metallurgy；new technology；production efficiency