Variable case depth powder metal gear and method thereof

A surface carburizing, powder metal technology, applied in gear transmissions, belts/chains/gears, elements with teeth, etc., which can solve problems such as no indication or hint
CN101827673AActive Publication Date: 2010-09-08GKN SINTER METALS GMBH & CO KG
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
GKN SINTER METALS GMBH & CO KG
Publication Date
2010-09-08

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Abstract

A gear and a method of making a forged powder metal gear having a plurality of teeth and a variable case depth profile forged in the plurality of teeth. Each tooth of the plurality of teeth has a first surface and a tooth root. A variable case depth profile is formed in each tooth of the plurality of teeth, whereby the variable case depth profile exhibits greater tooth wear resistance on the first surface and greater impact resistance in the tooth root.
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Description

technical field

[0001] The present invention relates to a forged powder metal part, and more particularly, to a powder metal part with variable case depth and a method of making the same. Background technique

[0002] There is a continuing need for manufacturing processes that reduce cost, time and steps in producing components. Often, customer requirements to develop and improve products with superior dimensional, mechanical and / or performance characteristics first necessitate the benefits ultimately associated with improved manufacturing processes. For example, a typical differential side gear may have any or all of the following performance requirements, such as: keyway areas requiring dimensional accuracy, high shear strength, and brinelling resistance; dimensional accuracy, surface finish, and case carburization Compatible hub and thrust surfaces; gear geometries requiring dimensional accuracy, surface finish, and optimum profile; and teeth that may require impact resi...

Claims

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