机油泵齿轮质量改进及以挤代剃的研究

为解决机油泵齿轮质量问题，利用ＣＡＤ／ＣＡＭ技术，用多段圆弧代替渐开线齿形，精心设计了冷挤精校模，用冷挤精整齿形工艺代替剃齿工艺。废品率下降了９％，降低了生产成本。

To settle down the quality problem of the fuel pump gear taking the advantage of CAD/CAM technic,by using multisegemnt of circular arcs to replace the involute gear shape,this paper designs carefully the precision cold extrusion rectifying mold to produce the gears with cold extrusion technology instead of the shaving process with a result of lowering the scrapes by 9%,decreasing considerably the production cost and increasing largely the productivity.