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US 6,217,409 B1Granted
Threaded grinding wheel and method of dressing
AssigneeThe Gleason Works
InventorsHermann J. Stadtfeld, Eric G. Mundt
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AssigneeThe Gleason Works
InventorsHermann J. Stadtfeld, Eric G. Mundt
Estimating the term…
A method of dressing a threaded grinding wheel such that twisting of workpiece tooth flanks does not occur during grinding. The grinding wheel is preferably dressed with a circular arc hollow-crowned generating front with the generating front being described by a radius, Rb, and dressed into an axial plane of the grinding wheel. The workpiece is then relatively shifted across the grinding wheel along a feed shift vector which is oriented perpendicular to the axis of the workpiece. With this method, the effects of flank twist can be eliminated, or, a controlled amount of flank twist can be introduced not only in helical gears, but also in spur gears. The grinding wheel may also be dressed with a circular arc barrel-shaped generating front. The principles of the present invention may also be applied to hobbing tools.
A grinding wheel for grinding toothed articles, said grinding wheel comprising an axis of rotation, a length extending in the direction of said axis of rotation, and at least one grinding thread having two flank surfaces with said grinding thread being generally helically arranged about said grinding wheel and extending along said length, said grinding wheel further comprising:
A method of grinding spur and helical gears to control flank twist in said gears, said method comprising:
A method of dressing a threaded grinding wheel for enabling subsequent grinding operations to control flank twist in spur and helical gears, said method comprising:
Dependencies are inferred from the claim text.