Automatic power controller for a wire saw

Details Automatic power controller for a wire saw Automatic power controller for a wire saw

1976-08-25

1977-08-02

Whitehead, Harold D.

Stone working

Sawing

Endless

B28D 108

Patent

active

040389626

ABSTRACT:
To maintain the cutting wire of a wire saw properly bowed with a substantially constant cutting pressure on the stone, an automatic power controller is utilized consisting of a meter with relay contacts. The meter measures the current flowing to the main power motor for the wire saw which drives the wire. When this current falls below a selected value, the meter through the relay means turns on a slow speed wire saw dolly feed down motor which down feeds the wire into the stone. This increases wire cutting pressure and restores wire bow to the optimum degree for efficient and rapid cutting. The increase in wire pressure and resulting drag increases current consumption to the main wire saw drive motor. When this current is increased to its original value, the meter turns off the slow speed down feed motor for the dolly.

REFERENCES:
patent: 2674238 (1954-04-01), Dessureau
patent: 2958323 (1960-11-01), Knoph
patent: 2961808 (1960-11-01), Dunigan
patent: 3635207 (1972-01-01), Grage
patent: 3948001 (1976-04-01), Miyazawa

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