Grinding machine

Details Grinding machine Grinding machine

1978-02-23

1980-08-19

Whitehead, Harold D.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

5116588, B24B 4904

Patent

active

042177340

ABSTRACT:
A grinding machine with two spaced-apart coaxial grinding wheels wherein the workpieces are transported through the space between the neighboring parallel active surfaces of the grinding wheels. A gauge monitors the length of workpieces which issue from the space and closes a microswitch when the monitored length of workpieces reaches a predetermined value which is close to or equals the upper limit of the acceptable range of lengths. The microswitch completes a circuit which causes a motor for one of the grinding wheels to move the one grinding wheel nearer to the other grinding wheel. The distance between the active surface of the other grinding wheel and a fixed reference point in the space between the wheels is monitored by a transducer which causes a motor for the other grinding wheel to move the latter toward the one grinding wheel when the aforementioned distance reaches a preselected maximum permissible value while the gauge closes the microswitch. The motor for the one grinding wheel is idle when the motor for the other grinding wheel is operative, and vice versa. The motors move the grinding wheels in stepwise fashion, and the length of increments through which the grinding wheels are moved toward each other can be selected by the attendant.

REFERENCES:
patent: 2753667 (1956-07-01), Whitelaw
patent: 3001337 (1961-09-01), Dunn
patent: 3079740 (1963-03-01), Fallon
patent: 3561164 (1971-02-01), Dunn
patent: 3889428 (1975-06-01), Steinegger et al.
Rutbell, IBM Technical Disclosure Bulletin, "Straddle Grinding Machine," vol. 4, No. 6, Nov. 1961, pp. 3-4.

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