Apparatus for regrinding step drills

Details Apparatus for regrinding step drills Apparatus for regrinding step drills

1983-11-21

1984-12-25

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51 94R, 51219R, 356384, 364551, B24B 4904

Patent

active

044895232

ABSTRACT:
A drill bit pointer machine includes a laser micrometer for measuring the pilot diameter and transmitting the data to a microprocessor through a digital readout. The microprocessor is programmed to manipulate the data and define the operation of a stepper motor which produces the required motion necessary for adjusting the machine workhead stop for utilization in the subsequently performed semi-automatic grinding cycle.

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patent: 3040480 (1962-06-01), Winslow
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patent: 3543445 (1970-12-01), Borchert
patent: 3851180 (1974-11-01), Kato
patent: 3947129 (1976-03-01), Wikland
patent: 4005552 (1977-02-01), Hoglund
patent: 4167082 (1979-09-01), Kolb
patent: 4176396 (1979-11-01), Howatt
patent: 4228514 (1980-10-01), Weiss
patent: 4260986 (1981-04-01), Kobayashi

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