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我厂生产的机床齿轮,大部分需高频淬火,齿面硬度在HRC 45～55之间,精度等级大部分为7 Dc (JB179-60,简称旧齿标)。以往我厂对旧齿标7级和7级精度以下的中硬齿面(硬度为HRC48～55)齿轮,采用滚→剃→热处理→修校内孔及基准端面的工艺路线。由于热处理后齿轮变形大,齿形精度会降低1～2级,齿向精度降低2～3级。而采用传统磨齿工艺,虽能保证齿轮精度,但生产率低、成本高,不适于大量生产。若采用珩齿,虽能降低齿面粗糙度,但对齿形精度的提高程度较小,纠正热处理后齿抢的
I plant the production of machine tools, most of the need for high-frequency quenching, tooth hardness between HRC 45 ~ 55, most of the accuracy level of 7 Dc (JB179-60, referred to as the old tooth standard). In the past I plant the old tooth standard 7 and 7 precision in the following hardened (HRC48 ~ 55 hardness) gear, rolling → shaving → heat treatment → repair the hole and the reference surface end of the process. As the gear deformation after heat treatment, tooth profile will be reduced by 1 to 2, the tooth to reduce the accuracy of 2 to 3. The use of traditional grinding process, although the gear to ensure accuracy, but low productivity, high cost, not suitable for mass production. If the use of honing, although can reduce the tooth surface roughness, but to improve the accuracy of the tooth shape is small, to correct the heat treatment tooth grab