Combined drill and reamer

Details Combined drill and reamer Combined drill and reamer

1982-09-23

1985-03-26

Briggs, William R.

Cutting by use of rotating axially moving tool

Tool or tool with support

Having peripherally spaced cutting edges

408227, 408229, B23B 5108

Patent

active

045070288

ABSTRACT:
A cutting tool combining a front drill part and a rear reamer part along one axial line, having twist drill flutes through both parts and reamer cutting edges spiraling in the opposite direction to that of the drill cutting edges, whereby the tool can provide a through hole in a workpiece having a smooth surface with one forward rotating operation.

REFERENCES:
patent: 2918955 (1959-12-01), Simas
patent: 3147646 (1964-09-01), Rawcliffe, Jr.
patent: 3575520 (1971-04-01), Halpern
patent: 3667857 (1972-06-01), Shaner et al.
patent: 3824027 (1974-07-01), Janci
patent: 3838937 (1974-10-01), Haulex
patent: 3863316 (1975-02-01), Yeo
patent: 3913196 (1975-10-01), Maday
patent: 4078458 (1978-03-01), Berendzen
patent: 4231693 (1980-11-01), Kameraad

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