Automatic fault detection system for a machine tool

Details Automatic fault detection system for a machine tool Automatic fault detection system for a machine tool

1981-08-31

1984-01-17

Meister, James M.

Cutting by use of rotating axially moving tool

With control means energized in response to activator...

116 70, 83 621, B23B 4724, B23G 100, G01L 1906

Patent

active

044261772

ABSTRACT:
An automatic fault detection system for use with machine tools to detect the breakage or absence of the tool, the presence and/or absence of a portion of the workpiece, and to prevent the normal cycle of operation of the machine when such condition exists, includes a sensor having a rod, a power port and a pair of pressure sensing ports. First and second pressure sensing switches are connected to the sensing ports wherein the failure of the sensor rod to fully retract or to advance before or beyond good check stroke position respectively exhausts the pressure sensing switches preventing operation of the machine cycle.

REFERENCES:
patent: 2640515 (1953-06-01), Johnson
patent: 3302492 (1967-02-01), Weidig
patent: 3647998 (1972-03-01), Rohraff
patent: 3682129 (1972-08-01), Philbrick
patent: 4056329 (1977-11-01), Perry
patent: 4180356 (1979-12-01), Hoch
patent: 4310269 (1982-01-01), Neu et al.

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