Using illustrations this paper explains that bias error (“thetwisted tooth phoneme”) is a by-product of applying conventionalradial crowning methods to produced crowned leads on helical gears.The methods considered are gears that are finished, shaped, shaved,form and generated ground. The paper explains why bias error occursin these methods, and then addresses what techniques are used tolimit/eliminate bias error. Profile and lead inspection charts willbe used to detail bias error and the ability to eliminate it. Thepaper details the simultaneous interpolation of multiple axes inthe gear manufacturing machine to achieve the elimination of biaserror. It also explains that CNC machine software can be used topredict bias error, and equally important that it could be used tocreate an “engineered bias correction” to increase the loadcarrying capacity of an existing gear set.
- Edition:
- 08
- Published:
- 10/01/2008
- Number of Pages:
- 14
- File Size:
- 1 file , 1.3 MB
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