HE Guoqi,YANG Shijie,ZHANG Xiaohong,et al.Design of finger milling cutter for precision machining of involute internal herringbone gear with short relief groove[J].Journal of Mechanical Transmission,XXXX,XX(XX):1-7.
HE Guoqi,YANG Shijie,ZHANG Xiaohong,et al.Design of finger milling cutter for precision machining of involute internal herringbone gear with short relief groove[J].Journal of Mechanical Transmission,XXXX,XX(XX):1-7.DOI:
Design of finger milling cutter for precision machining of involute internal herringbone gear with short relief groove
Conventional disc-shaped milling cutters create excessively large relief grooves when machining internal herringbone gears
limiting their applicability
while finger milling cutters based on a simplified normal plane of the tooth space suffer from inadequate tooth surface accuracy and transition zone interference. To address these issues
a finger milling cutter design method suitable for machining internal herringbone gears with short relief grooves was proposed.
Methods
2
Based on the generating principle of gear shaper cutting
the transverse profile equation of the internal gear was derived. By incorporating helical motion
the spatial tooth surface equation was constructed
and the precise tooth profile equation of the finger milling cutter was solved according to gear meshing theory. Models were built in UG software
and machining simulations were conducted for comparison.
Results
2
The results show that compared to the traditional design
the tooth surfaces machined with the newly designed finger milling cutter exhibit reductions in maximum overcut and residual stock by 15.51% and 19.23%
respectively
along with a 9.1% decrease in the root mean square value of deviation. The proposed method effectively improves tooth surface accuracy and forming quality.
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