Apparatus for securing a workpiece to be machined on a machine

Details Apparatus for securing a workpiece to be machined on a machine Apparatus for securing a workpiece to be machined on a machine

1974-09-16

1976-03-09

Smith, Al Lawrence

Work holders

Holder inserted within work aperture

269 78, 269310, 269321A, 269321ME, B23Q 100

Patent

active

039427803

ABSTRACT:
A drilling or milling machine on which workpieces of thin metal plate can be accurately located for machining. The machine has a workplate to which is secured a table formed with openings in regular matrix array occupied by plates at least some of which are apertured. A workpiece is located on a rectangular workpiece support plate and clamped thereto. This workpiece support plate is formed with two bores each housing a spring loaded pin and each adjacent to an opposite corner of the workpiece support plate. The pins fit into the respective bores and into adjacent plate apertures of the matrix and are engaged by slotted plates which when moved in one sense pull the pins down against the spring loading to clamp the workpiece support plate and table together and when moved in the opposite sense allow the pins to release by the spring action so that the workpiece support plate can be removed. The matrix array comprising the apertured plates permits the workpiece support plate to be located in any of a number of predetermined positions, or a plurality of workpiece support plates each in a predetermined position.

REFERENCES:
patent: 832087 (1906-10-01), Scoggins
patent: 1308451 (1919-07-01), Schachat
patent: 2360417 (1944-10-01), Grenfell
patent: 2408560 (1946-10-01), Keehn
patent: 2830476 (1958-04-01), Zapf
patent: 2984176 (1961-05-01), Sommer
patent: 3049032 (1962-08-01), Schabot

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