Key cutting machine

Gear cutting – milling – or planing – Milling – With regulation of operation by templet – card – or other...

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Details

76110, 409 81, B23C 116

Patent

active

045211426

ABSTRACT:
A machine for cutting a contoured edge into a key blank according to a predetermined guide surface. The key blank is mounted in a vise located at one end of a fixture which has means for establishing the guide surface at a second end. The fixture is journaled on a stationary shaft for pivoting about and horizontally sliding along the shaft. A cutting wheel is journaled for rotation on an arbor and is arranged to be engaged by the key blank as the fixture is moved. A stationary stylus is arranged to contact the guide surface to control the pivoting movement of the fixture. A spring urges the fixture to pivot in one direction to cause the stylus to contact the guide surface and the cutting wheel to cut into the key blank in accordance with the guide surface as the fixture slides horizontally along the shaft. The guide surface comprises a series of rotatable disks aligned on a shaft which have successive steps of different depths formed on a portion of the periphery of each disk. A cam is provided to selectively prevent the spring from pivoting the guide means and key blank toward the stylus and cutting wheel if it is desireable to interrupt the cutting operation.

REFERENCES:
patent: 1889461 (1932-11-01), Hansen
patent: 3807276 (1974-04-01), Oliver
patent: 3902382 (1975-09-01), Lieptz
patent: 4051748 (1977-10-01), Sherman
patent: 4092806 (1978-06-01), Wich
patent: 4140043 (1979-02-01), Huckinghaus et al.
patent: 4256423 (1981-03-01), Juskevic

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