Involute CAM is an important attachment which produce involute profile in the copying gear grinder; the accuracy of which directly decide the profile accuracy of gear which is grinded.
渐开线凸轮是靠模式齿轮磨床生成渐开线齿形的重要附件，其精度直接决定着被磨齿轮的齿形精度。
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By using the profile modeling machining equipment of helix Angle, a new method about grinding rake face of gear cutter hob on tool grinder is presented.