Patent ID: 7340978
Filing Date: 2008-03-11
Classification: B22F,B23P,B28B,Y10T

Abstract:
1. A method for manufacturing a rotary tool for chip removing machining having at least one external chip flute that extends generally in a longitudinal direction of the tool, comprising the steps of: A) preparing a mixture of a powder and a carrier, the powder comprising one of cemented carbide, cermet, or ceramics, B) placing the mixture in an extruding machine, C) extruding the mixture in a feed direction through a die forming a diameter of a mixture body, D) allowing the mixture body to exit the die and travel in contact with at least one cutter which forms a chip flute in an outer periphery of the mixture body by removing a portion of the mixture body, E) displacing the at least one cutter out of contact with the mixture body so that the mixture body is formed with an unfluted shank portion, F) allowing the mixture body to solidify and form a green body, and G) sintering the green body.