Coolant delivery system

Details Coolant delivery system Coolant delivery system

1986-06-30

1987-02-03

Briggs, William R.

Gear cutting, milling, or planing

Milling

With means to control temperature or lubricate

10 89F, 279 20, 408 56, 408 59, B23G 146, B23B 5104

Patent

active

046406522

ABSTRACT:
A tap extension having a dual-mode coolant delivery system is disclosed which is adapted to connect a thread-cutting tap with an associated machine tool spindle having a pressurized coolant supply. The extension includes a generally elongated shank portion, with a locking arrangement provided at one end thereof for receiving and releasably retaining a tap in driven relation with the tap extension. Notably, the tap extension includes a valve arrangement whereby pressurized coolant is directed: (1) through the axial bore of a tap in a first mode of operation, or (2) exteriorly of a solid tap to between its cutting flutes in a second mode of operation. Versatile and efficient thread-forming in either blind holes or through holes is thus facilitated by use of the present construction.

REFERENCES:
patent: 3024030 (1962-03-01), Koch
patent: 3487748 (1970-01-01), Grage
patent: 3905609 (1975-09-01), Sussman
patent: 4080090 (1978-03-01), Kern
patent: 4127279 (1978-11-01), Wright
patent: 4396317 (1983-08-01), Staron et al.
patent: 4551045 (1985-11-01), Bossler

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