Cutting insert

Cutting by use of rotating axially moving tool – Tool or tool with support – Including detailed shank

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408233, 408713, B23B 5100

Patent

active

054961378

ABSTRACT:
A cutting insert having a cutting head and a coupling shank integral at one end thereof with the cutting head and including a screw threaded portion. The cutting insert is formed by a powder metallurgy process of compacting and sintering and the screw threaded portion is constituted by a substantially cylindrical body having a pair of diametrically opposed, longitudinally truncated planar portions interposed between substantially curved cylindrical portions having arcuate surfaces on which there are formed a non-continuous screw thread, the arcuate surfaces extending between 50 to 85% of the total peripheral extent of the cylindrical body of which they form part. There is also disclosed a powder metallurgy process for manufacturing the cutting insert.

REFERENCES:
patent: Re34256 (1993-05-01), Strand et al.
patent: 1191717 (1916-07-01), Moore
patent: 1881024 (1932-10-01), Lang
patent: 4394421 (1983-07-01), Chmura et al.
patent: 4834596 (1989-05-01), Hollifield et al.
patent: 5248474 (1993-08-01), Morgan
Patent Abstracts of Japan, vol. 5, No. 158 (M-91) (830) 12 Oct. 1981 and JP-A-56 086 638 (Ricoh K.K.) 14 Jul. 1981 (Abstract).
British Standard 122-Part 4 entitled British Standard Specification for Milling cutters Part 4. Screwed shank end mills and slot drills dated 1980.

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