Machine tool

Details Machine tool Machine tool

1979-01-08

1980-09-23

Hinson, Harrison L.

Turning

Process of turning

408 3, 408 35, B23B 334, B23B 3908, B23B 3920

Patent

active

042235790

ABSTRACT:
The turret machine tool comprises a set of tool spindles which are driven via a built-in transmission gears by a direct current motor having a relatively stable torque in a wide range of rotational speeds such as a multiple direct current motor having permanent magnetic field and further including means for electrically controlling the speed of the motor according to a predetermined numerically controlled program.

REFERENCES:
patent: 2953046 (1960-09-01), Jones
patent: 3413702 (1968-12-01), Burg
patent: 3797363 (1974-03-01), Nohejl
patent: 3975109 (1976-08-01), Frazierr

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