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齿刀是按齿轮啮合原理加工工件齿形的一种展成刀具。它相当于一个齿数很少,螺旋角很大的斜齿轮其外貌呈蜗杆状。按照加工性质分为:精切滚刀,粗切滚刀,剃前滚刀,刮前滚刀,挤前滚刀,和磨前滚刀。按结构分为:整体滚刀,焊接式滚刀,装配式滚刀,切割原理
Gear cutter is a kind of generating tool for machining the tooth profile of the workpiece according to the gear meshing principle. It is equivalent to a small number of teeth, spiral angle of a large helical gear its appearance is worm like. According to the nature of the processing is divided into: fine cut hob, rough cut hob, before shaving hob, before scraping hob, squeeze before the hob, and grinding hob. According to the structure is divided into: integral hob, welding type hob, assembly hob, cutting principle
齿刀是依照螺旋齿轮副啮合原理,用展成法切削齿轮的刀具相当于小齿轮,被切齿轮相当于一个大齿轮。齿刀是一个螺旋角β0很大而螺纹头数很少(1~3个齿),齿很长,并能绕滚刀分度圆柱很多圈的螺旋齿轮,这样就象螺旋升角γz很小的蜗杆了。为了形成刀刃,在蜗杆端面沿着轴线铣出几条容屑槽,以形成前面及前角;经铲齿和铲磨,形成后刀面及后角
齿刀分类与切割原理
The cutter tooth is in accordance with the meshing principle of spiral gear, involute gear cutting tool, cutter tooth is equivalent to the small gear, gear is equivalent to a big gear. The tooth knife is a spiral angle beta 0 big and the thread head few (1 ~ 3 teeth), the tooth is very long, and can circle the hob dividing cylindrical spiral gear, which is like the spiral ascending angle gamma Z very small worm. In order to form a cutting edge, the worm face is formed along an axis to form a front and a front corner to form a front and a back corner.
齿刀的两侧刀刃是前面与侧铲表面的交线,它应当分布在蜗杆螺旋表面上,这个蜗杆称为滚刀的基本蜗杆。
Cutter teeth on both sides of the blade is in front and side of the shovel surface intersection, it shall be distributed on the surface of the worm screw, the worm said hob basic worm.

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