Cutting by use of rotating axially moving tool – With means to apply transient – fluent medium to work or product – Including tool with duct
Patent
1978-05-19
1981-05-19
Briggs, William R.
Cutting by use of rotating axially moving tool
With means to apply transient, fluent medium to work or product
Including tool with duct
408 57, B23B 5104
Patent
active
042681979
ABSTRACT:
The deep drilling tool for workpieces includes a drill bit having an orifice with at least one cutting edge, and a hollow drill stem connectable to the drill bit. The interior of the stem is divided by a longitudinal partition in at least two separate passages. One passage communicates with the orifice of the bit whereas the end part of the or each other passage communicates through openings in the wall of the stem with the exterior surface of the tool. The free end of the stem is provided with inlet means for feeding pressure fluid into the or each other passage, whereas the used pressure fluid together with the drilling chips is discharged through the bit orifice and the first-mentioned passage.
REFERENCES:
patent: 841184 (1907-01-01), Roeske
patent: 2780947 (1957-02-01), Willingham
patent: 3701606 (1972-10-01), Bogsten
Briggs William R.
Striker Michael J.
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