High speed positive feed drill motor open loop control system

Details High speed positive feed drill motor open loop control system High speed positive feed drill motor open loop control system

1986-10-22

1988-06-07

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 415503, H02P 800

Patent

active

047499303

ABSTRACT:
A high speed positive feed drill motor open loop control system. The motor system comprises a minimally limited inertia air turbine motor including mounting guidance and control for enabling the drill to advance into the workpiece at a rate exactly proportional to the rotational speed of the drill. The turbine speed is measured with a digital tachometer while a stepper motor/ball screw mechanism is utilized to control and apply the feed rate.

REFERENCES:
patent: 3446099 (1969-05-01), Lesher et al.
patent: 3677351 (1972-07-01), Geissler
patent: 4566849 (1986-01-01), Flink

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