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针对我厂加工汽车刹车凸轮轴渐开线拉刀的粗加工中存在的问题，设计了一种结构合理的加工渐开线镗刀，使加工精度和效率大幅度提高．
Aiming at the problems existing in the rough machining of the involute broach of our factory processing automobile brake camshafts, a reasonable-designed involute boring cutter is designed to greatly improve the machining accuracy and efficiency.