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齿刀是经过淬火磨削的齿轮形刀具,沿齿高方向有锯刀槽。剃齿加工就是利用刀与齿轮工件的啮合传动,从齿轮工件的齿面切削去微小的加工余量,进行剃削。
Cutter is through the gear cutter grinding hardening, along the direction of tooth height has a serrated knife groove. Is the use of gear shaving cutter and gear meshing of the workpiece, the workpiece from the gear tooth surface cutting machining allowance to small, for shaving.
齿轮工件与齿刀啮合旋转时,齿轮轴与刀具轴并不平行,而是互相交错;齿轮工件和刀之间只有齿面啮合,两者的轴之间没有机械的联系,互相之间自由旋转。这也是剃齿与其它齿轮精加工方法、切齿法的显著区别所在。
Gear workpiece and cutter tooth meshing rotation, gear shaft and the tool axis is not parallel to but are mutually staggered; between the gear workpiece and cutter only tooth surface meshing, both axes have no mechanical contact, between each other free rotation. This is the difference between shaving and other gear machining method, cutting method.
剃齿过程中,两轴互相交错地啮合着的齿轮和齿刀,由于一面在齿面上加压力而一面旋转,刀具和齿轮齿面在齿高方向和轴向产生相对滑移,刀具齿面上的很多齿刃槽的边缘就成了切削刃。
In the shaving process, two axes intersecting engaged with gears and gear cutter, due to the side of the tooth surface and pressure and side rotation, the cutter and the gear tooth surface in the direction of the height of the tooth and axial produce relative slip, the edge of the cutter surface of teeth blade groove became cutting edge.
齿刀的锯刀槽的顶部构成刀具齿面,用齿轮磨床进行齿形磨削,没有齿面后角,不像其它刀具(例如插齿刀)有齿面后角。因此,即使是用锯齿刃槽的刃背顶住齿轮工件的齿面,也不会过度切入,可以用0.02~0.05毫米的加工余量进行齿面精加工。
The tooth surface of the cutter is formed on the top of the tooth cutter tooth surface, and the tooth profile grinding is carried out by the gear grinding machine. Therefore, even with the serrated edge of the blade back against the gear tooth surface, it will not be over cut, you can use 0.05 to 0.02 mm machining allowance for tooth surface finishing.

齿刀的工艺流程及应用范围

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