FORMING ROTARY CUTTING TOOL

• Main Author: FURUKAWA, TAKAO
• Format: Patent
• Language: English; French; Japanese
• Published: 04.09.2014
• Subjects: GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; MILLING; PERFORMING OPERATIONS; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING

A forming rotary cutting tool (1) in the shape of a Christmas tree, provided with a main body (10) and cutting blades (20a, 20b) provided to the outer periphery of the main body (10), the cutting blades (20a, 20b) alternately having a plurality of convex parts (21a1-21a4, 21b1-21b4) and a plurality of concave parts (22a1-22a3, 22b1-22b3); wherein within a predetermined range from a tool tip part (30), the cutting blades (20a, 20b) are integrated cutting blades (40a, 40b) that are formed integrally with the main body (10), and outside of the predetermined range, the cutting blades (20a, 20b) are attached cutting blades (50a, 50b) that are formed separately from the main body (10) and attached to the main body (10). La présente invention concerne un outil à former coupant rotatif (1) en forme d'arbre de Noël, doté d'un corps principal (10) et de lames coupantes (20a, 20b) situées sur la périphérie externe du corps principal (10), les lames coupantes (20a, 20b) possédant alternativement une pluralité de parties convexes (21a1 à 21a4, 21b1 à 21b4) et une pluralité de parties concaves (22a1 à 22a3, 22b1 à 22b3) ; à l'intérieur d'une plage prédéfinie à partir d'une partie pointe d'outil (30), les lames coupantes (20a, 20b) étant des lames coupantes intégrées (40a, 40b) qui sont formées solidairement avec le corps principal (10) et, à l'extérieur de la plage prédéfinie, les lames coupantes (20a, 20b) étant des lames coupantes fixées (50a, 50b) qui sont formées séparément du corps principal (10) et fixées au corps principal (10).