Constant thrust adaptive control machine tool

Details Constant thrust adaptive control machine tool Constant thrust adaptive control machine tool

1980-03-20

1982-08-24

Ruggiero, Joseph F.

Boots, shoes, and leggings

318571, 408 11, 364148, G06F 1546, G05B 1918

Patent

active

043464440

ABSTRACT:
A metal working machine for moving a cutting tool through a metal workpiece which includes a spindle carrying a cutting tool therein, a feed drive motor for advancing the spindle, and a rotation drive motor for rotating the spindle. The workpiece is firmly held by a variable force clamp in an operative position to permit the cutting tool to move therethrough. The thrust of the cutting tool is sensed as well as the rotational velocity of the spindle. A data memory contains the optimum thrust load against a predetermined workpiece material for a cutting tool having a predetermined diameter dimension. A data proceser, upon selection of the optimum thrust load for the tool to be used and the particular workpiece, is coupled to the rotational velocity sensor and provides an output to the feed motor, the rotational drive motor, and the clamp to rotate and advance the cutting tool into contact with the workpiece at the predetermined optimum thrust load and to maintain the clamping force in excess of the predetermined thrust load. In order to maintain the thrust load constant, the feed and the speed of the spindle are sampled intermittently, with the feed being sampled more often than the speed.

REFERENCES:
patent: 3259023 (1966-07-01), Rieger et al.
patent: 3418549 (1968-12-01), Emerson et al.
patent: 3548172 (1970-12-01), Centner et al.
patent: 3849712 (1974-11-01), Lankford et al.
patent: 4031368 (1977-06-01), Colding et al.
patent: 4078195 (1978-03-01), Mathias et al.
patent: 4208718 (1980-06-01), Chung

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