Indexable composite cutting insert having corner cutting edges

Details Indexable composite cutting insert having corner cutting edges Indexable composite cutting insert having corner cutting edges

B - Operations, Transporting

23

Q

29/44

B23Q 3/00 (2006.01) B23B 27/14 (2006.01) B23P 15/28 (2006.01) B24D 3/00 (2006.01) C04B 35/573 (2006.01)

Patent

CA 1185776

INDEXABLE COMPOSITE CUTTING INSERT HAVING CORNER CUTTING EDGES ABSTRACT OF THE DISCLOSURE An indexable composite cutting insert which is generally polygonal in plan view and includes spaced upper and lower surfaces, is composed of a core, such as a SiC-Si composite material, with the corners along one surface of the composite cutting insert being made of a superhard material of diamond or cubic boron nitride crystals bonded to the core. The limited use of super- hard crystals in the critical areas of the cutting edges of the insert results in significant cost savings, both in manufacturing costs and costs of materials, as well as minimum warpage of the insert. In addition, improved wear resistance of the cutting edges of the insert is obtained.

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