Self-centering arrangement for grinding the hardmetal pins of dr

Details Self-centering arrangement for grinding the hardmetal pins of dr Self-centering arrangement for grinding the hardmetal pins of dr

1989-10-16

1991-12-10

Meislin, D. S.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

511255, 51119, 51170MT, 51266, 409200, B24B 333

Patent

active

050706543

ABSTRACT:
An arrangement for grinding the hardmetal pins of drill bits, e.g. the tungsten carbide buttons (31) of button bits (1), comprises means (parallel arms pairs 9 and 10) for adjusting the position of a grinding pin (15) in relation to the drill bit (1) and also journalling means (4) operative to cause the grinding machine (3) to move relatively slowly in a circuit path around the button on the drill bit (1) to be ground and to cause the grinding pin (15) to rotate rapidly around its longitudinal axis. The drill bit is clamped securely in a stationary holder arrangement (2) which includes a tiltable table (35) which can be adjusted to and locked in selected angular positions.

REFERENCES:
patent: 3036409 (1962-05-01), Whitcomb
patent: 3641709 (1972-02-01), Gazuit
patent: 3854250 (1974-12-01), Vornberger
patent: 4123877 (1978-11-01), Pere
patent: 4419846 (1983-12-01), Schimitzeh
patent: 4555229 (1985-11-01), Beady's
patent: 4858388 (1989-08-01), Bice

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