一次成型制造缝纫机梭芯套的新工艺

摘要

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％.%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％.