Chip breaker for polycrystalline CBN and diamond compacts

Details Chip breaker for polycrystalline CBN and diamond compacts Chip breaker for polycrystalline CBN and diamond compacts

1989-10-31

1991-06-25

Evans, Geoffrey S.

Electric heating

Metal heating

Cutting or disintegrating

51307, 21912169, 407114, 407115, B23H 900

Patent

active

050269607

ABSTRACT:
An oversize compact blank having a surface and edges that establish it as oversized is provided. A chip breaker pattern is formed on the compact blank surface. Preferred means for forming the chip breaker pattern include use of a laser, a plunge EDM apparatus, or by ultrasonic abrading. Thereafter, the edges of the patterned oversized compact blank are finished to reduce the size of the blank. When pluge EDM apparatus fitted with a patterned plunger is used, the compact blank must be electrically conductive.

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patent: 4854784 (1989-08-01), Murray et al.

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