Patent ID: 7377731

Claim:
A chamfering grinding wheel for providing a chamfered end to gear teeth disposed on a diameter of an annular work piece, a work piece surface being modeled for a corresponding chamfer desired on the gear teeth, wherein the parameters of the grinding wheel are defined according to the following equation in reference to the parameters of the work piece and desired chamfer at a specified angle: r a = ( x a 2 + R 2 - ( 2 ⁢ Rx a ⁢ cos ⁢ ⁢ β ) ) 1 / 2 where ⁢ : R = ⁢ the ⁢ ⁢ outer ⁢ ⁢ radius ⁢ ⁢ of ⁢ ⁢ the ⁢ ⁢ grinding ⁢ ⁢ wheel , β = ⁢ the ⁢ ⁢ angle ⁢ ⁢ between ⁢ ⁢ the ⁢ ⁢ grinding ⁢ ⁢ wheel ⁢ ⁢ dressing ⁢ plane ⁢ ⁢ ( extending ⁢ ⁢ radially ) ⁢ ⁢ and ⁢ ⁢ the ⁢ ⁢ grinding ⁢ plane , x = ⁢ the ⁢ ⁢ distance ⁢ ⁢ from ⁢ ⁢ the ⁢ ⁢ slot ⁢ ⁢ root ⁢ ⁢ to ⁢ ⁢ the ⁢ ⁢ corresponding ⁢ slot ⁢ ⁢ width ⁢ ⁢ at ⁢ ⁢ which ⁢ ⁢ measurement ⁢ ⁢ is ⁢ ⁢ made , r = ⁢ the ⁢ ⁢ radius ⁢ ⁢ of ⁢ ⁢ the ⁢ ⁢ grinding ⁢ ⁢ wheel ⁢ ⁢ to ⁢ ⁢ the ⁢ ⁢ contact ⁢ point ⁢ ⁢ on ⁢ ⁢ the ⁢ ⁢ work ⁢ ⁢ piece ⁢ ⁢ in ⁢ ⁢ the ⁢ ⁢ grinding ⁢ ⁢ plane , Y = ⁢ radial ⁢ ⁢ distance ⁢ ⁢ from ⁢ ⁢ the ⁢ ⁢ outside ⁢ ⁢ diameter ⁢ ⁢ of ⁢ the ⁢ ⁢ grinding ⁢ ⁢ wheel ⁢ ⁢ to ⁢ ⁢ the ⁢ ⁢ corresponding ⁢ ⁢ point ⁢ ⁢ for ⁢ ⁢ the ⁢ ⁢ given ⁢ ⁢ slot ⁢ ⁢ width , ⁢ and , ⁢ for ⁢ any ⁢ ⁢ particular ⁢ ⁢ slot ⁢ ⁢ width ⁢ ⁢ at ⁢ ⁢ which ⁢ measurement ⁢ ⁢ is ⁢ ⁢ made , Y a = ⁢ R - r a , and having a chamfer angle at both a front face and a back face of a work piece.