Cutting tool for milling

Details Cutting tool for milling Cutting tool for milling

B - Operations, Transporting

23

C

B23C 5/16 (2006.01) B23C 5/06 (2006.01) B23C 5/22 (2006.01)

Patent

CA 2233401

A cutting tool for milling comprises an insert consisting of a cubic boron nitride sintered body having heat conductivity of at least 400 W/m~K at 120°C and a thermal expansion coefficient within the range of at least 3.0 x 10 -6/K and not more than 4.0 x 10 -6/K in the temperature range of 20°C to 600°C. According to this cutting tool for milling, sufficient tool life can be attained in high-speed face milling under a wet condition and high-speed end milling under a wet condition.

La présente invention a pour objet un outil de coupe pour fraiseuse comportant une mise rapportée composée d'un corps cubique en nitrure de bore fritté possédant une conductivité thermique d'au moins 400 W/m K à 120 degrés Celsius et un coefficient de dilatation thermique de l'ordre d'au moins 3,0 x 10-6/K et d'au plus 4,0 x 10-6/K dans une plage de température de 20 à 600 degrés Celsius. L'utilisation de cet outil de coupe à des fins de fraisage assure l'obtention d'une durée de vie satisfaisante dans les opérations de fraisage en bout haute vitesse sous arrosage ainsi que dans les opérations de fraisage combiné haute vitesse sous arrosage.

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