Каталог Tungaloy зубофрезерование - страница 59

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In simple terms, gear skiving can be viewed as a combination of

hobbing and gear shaping, combining some of the advantages of both∑ : cross-axis angle
machining processes. Primarily, these are the productivity of hobbing andβ : helical angle of tool
0
the flexibility of gear shaping. Especially when machining internal gearsβ2 : helical angle of gear
v : cutting speed work gear
compared to gear shaping, the gear skiving process scores with significantly2
v0 : cutting speed tool
higher productivity. Machining times for gear skiving are around 30% to 50%
v : resulting cutting speed
compared to the gear shaping process. In contrast to gear shaping, however,s

due to the inclined position of the tool in relation to the workpiece (cross- axis angle), gear skiving requires a machining path that is slightly larger than the width of the gearing to be produced. These additional paths are called approach and overrun distance. They increase as the cross-axis angle

increases. Due to these necessary approach and overrun distances, gear skiving has few restrictions compared to gear shaping with very narrow internal gears and interfering contours. For the majority of applications that were previously reserved for gear shaping, gear skiving is a much more productive and economical machining method.