Combination drilling and skiving tool

Details Combination drilling and skiving tool Combination drilling and skiving tool

1988-09-30

1989-09-26

Bishop, Steven C.

Cutting by use of rotating axially moving tool

Plural tool-assemblages

Coaxial

408191, 408194, 408224, B23B 5108

Patent

active

048696250

ABSTRACT:
A combination drilling and skiving tool including a longitudinally extending hollow skiving sleeve slidably and concentrically mounted on a right-handed twist drill. Dogs or pawls provided on the internal periphery of the skiving sleeve engage with the helical grooves of the drill. During a clockwise rotation of the tool, the drill moves downwardly and the sleeve translates upwardly, so that the drill performs a drilling operation on a workpiece. On the other hand, the drill moves upwardly and the sleeve translates downwardly, when the tool is rotated in a counter-clockwise direction, and the sleeve performs a skiving operation. The drilling and skiving operations are separate, independent and exclusive of each other.

REFERENCES:
patent: 1041675 (1912-10-01), Robinson
patent: 2345403 (1944-03-01), McGrew
patent: 2767412 (1956-10-01), Berkey
patent: 2797421 (1957-07-01), Williams et al.
patent: 2948000 (1960-08-01), Borland
patent: 3233260 (1966-02-01), Halpern
patent: 3877099 (1975-04-01), Halpern
patent: 3995969 (1976-12-01), Fleming

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