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US 4,761,867 AGranted
Method for producing ring gears for heavy-duty drive axles
AssigneeEaton Corporation
InventorsGeorge W. Vollmer, Alvin M. Sabroff
Life of this patent
Estimating the term…
Abstract
A method for providing ring gears (14) for (12/14) is provided. The method comprises providing a near net ring gear forging (106) which is machined on other than the root and flank tooth surfaces (90), subjected to a carburizing heat treatment (92) and then subjected to a grinding operation, preferably utilizing cubic boron nitride grinding tools, to finish machine the tooth flank and root surfaces to the final configurations thereof (94).
Claims11
A method for producing ring gears for heavy-duty drive axle ring gear/pinion gear gear-sets, said method comprising the steps of:
- providing a near net ring gear forging, the tooth flank and tooth root surfaces of said near net ring gear forging having sufficient excess material for subsequent removal by grinding;
- then finish machining said ring gear near net forging surfaces other than the gear teeth root and flank surfaces;
- then subjecting said machined workpiece to a carburizing heat treatment;
- then grinding said gear teeth root and flank surfaces to the final finish profiles thereof.
1 more element
Dependencies are inferred from the claim text.