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我厂在新产品试制中,有四种6级精度的齿条轴(见附图)。我们利用Y7520W万能螺纹磨床,分齿分面磨削并在M6110拉刀刃磨机上磨平留下的微小弧度,达到图纸尺寸要求。这样,节约了工装费用,缩短了试制周期,取得了较好的经验效益。加工工艺(1)齿条轴热处理前外圆留磨量0.3～0.4mm,用锯片铣刀铣出5.625mm齿深,齿面留磨量0.35～0.5mm,然后检查齿的积累误差,保证每8齿为0.10mm以内,并对齿条轴进行校直。
I plant in trial production of new products, there are four kinds of 6-precision rack shaft (see photo). We use Y7520W universal thread grinder, sub-tooth surface grinding and milling in the M6110 broaching mill left a small arc, to meet the requirements of the drawing size. In this way, saving tooling costs, shorten the trial cycle, and achieved good experience and efficiency. Processing technology (1) Before the cylindrical shaft heat treatment to keep the amount of 0.3 ~ 0.4mm cylindrical grinding, milling with a saw blade cutter 5.625mm tooth depth, the tooth surface to keep the amount of wear 0.35 ~ 0.5mm, and then check the cumulative error of teeth to ensure that Within 0.10mm for every 8 teeth, align the rack shaft.