Apparatus for controlling coolant flow in accordance to external

Details Apparatus for controlling coolant flow in accordance to external Apparatus for controlling coolant flow in accordance to external

1977-03-07

1978-02-28

Hinson, Harrison L.

Cutting by use of rotating axially moving tool

With control means energized in response to activator...

408 56, 408 59, 408 11, B23B 3904, B23B 2710

Patent

active

040764427

ABSTRACT:
An apparatus in a machine tool controls the flow of coolant in accordance to tool contact with a workpiece. The preferred embodiment measures and stores a torque value exerted upon a spindle motor under no-load conditions and compares this value to an operating torque value upon the same spindle motor. When the tool contacts a workpiece and the operating torque exceeds the stored no-load torque value by a predetermined amount, a solenoid operated valve is opened and coolant is permitted to the area of tool engagement with the workpiece.

REFERENCES:
patent: 1422031 (1922-07-01), Caulkins
patent: 1789841 (1931-01-01), Rennick
patent: 1846211 (1932-02-01), Krueger
patent: 3287996 (1966-11-01), Doyle
patent: 3521526 (1970-07-01), Olig et al.
patent: 3720135 (1973-03-01), Merner et al.

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