Cooling systems in tapping attachments suitable for high pressur

Details Cooling systems in tapping attachments suitable for high pressur Cooling systems in tapping attachments suitable for high pressur

1991-06-28

1993-05-25

Howell, Daniel W.

Cutting by use of rotating axially moving tool

With means to apply transient, fluent medium to work or product

Including tool with duct

279 20, B23B 5106, B23G 146

Patent

active

052134539

ABSTRACT:
In a self-reversing tapping attachment an improved coolant system includes at least one fluid flow orifice at the end of a fluid flow conduit contained in a drive spindle member and further includes a fluid contact member for generating force to prevent interference with the drive spindle member prior to tapping a hole. Provision is further made for self-correction of any tendency for back pressure of fluid flow to interfere with motion of the drive spindle member by provision for covering the fluid flow orifice during motion under back pressure, thereby reducing such pressure. A collector chamber and exit orifice for expulsion to ambient of coolant fluid prevent invasion of the inner mechanism by coolant under back pressure.

REFERENCES:
patent: 3264906 (1966-08-01), Swords
patent: 3487748 (1970-01-01), Grage
patent: 4396317 (1983-08-01), Staron et al.

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