Kennametal Inc.

David M Hray

Mark Alan Francis

A gear hobbing cutter system that includes a cutter head body having a plurality of cartridge-receiving slots arranged in pairs comprising an inside and an outside cartridge-receiving slot. Each pair of inside and outside cartridge-receiving slots are capable of receiving a respective inside and outside cartridge assembly. To ensure that the inside and outside cartridge assemblies are properly positioned within their respective cartridge-receiving slots, one of the dimensions, preferably the length, of the inside cartridge-receiving slot and its respective inside cartridge assembly of a pair is different than the outside cartridge-receiving slot its respective outside cartridge assembly so as to form an error proofing system. In addition, the invention provides for a cartridge assembly including a cutting insert that can be indexable to at least two cutting edges, thereby providing cost savings as compared to conventional cutter systems that use cutter blades that required to be entirely scraped when worn or broken.

Gear hobbing cutter system

A gear hobbing cutter system that includes a cutter head body having a plurality of cartridge-receiving slots arranged in pairs comprising an inside and an outside cartridge-receiving slot. Each pair of inside and outside cartridge-receiving slots are capable of receiving a respective inside and outside cartridge assembly. To ensure that the inside and outside cartridge assemblies are properly positioned within their respective cartridge-receiving slots, one of the dimensions, preferably the length, of the inside cartridge-receiving slot and its respective inside cartridge assembly of a pair is different than the outside cartridge-receiving slot its respective outside cartridge assembly so as to form an error proofing system. A deformable area is provided between the cartridge-receiving slot and the cutter head body. The deformable area includes a flex area for controlling an amount of deformation of the deformable area when a clamping member bears against a clamping pad. The invention provides for a cartridge assembly including a cutting insert that can be indexable to at least two cutting edges, thereby providing cost savings as compared to conventional cutter systems that use cutter blades that required to be entirely scraped when worn or broken.

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Solon, OH, United States of America

David M Hray