Boring device

Details Boring device Boring device

1988-04-26

1988-12-27

Weidenfeld, Gil

Cutting by use of rotating axially moving tool

Including means to cause tool to progressively vibrate...

74 22R, 173104, 173123, B23B 4734

Patent

active

047937467

ABSTRACT:
A boring device includes a casing and an upwardly biased tool spindle supported in the casing so as to move in a feed direction and a return direction opposite thereto. A first thrust ring with a track surface is disposed coaxial with the tool spindle and is fixed thereto. A second thrust ring with a track surface is also disposed coaxial with the tool spindle and fixed to the casing such that the track surfaces of the first and second thrust rings face each other. A rolling element retaining ring is provided coaxially with the tool spindle between the first and second thrust rings and has bores circumferentially arranged at predetermined angular intervals. Rolling elements are fitted in the bores of the rolling element retaining ring such that the rolling elements roll on the track surfaces of the first and second thrust rings. Receptacles complementary to the bores are formed in the track surface of the first thrust member. A coupling mechanism is provided to allow the rolling element retaining member to directly or operatively engage with the second thrust ring and disengage therefrom.

REFERENCES:
patent: 2358929 (1949-01-01), Clark et al.
patent: 2474720 (1949-06-01), Billeter
patent: 2514758 (1950-07-01), Hallden
patent: 2514759 (1950-07-01), Hallden
patent: 2630723 (1953-03-01), Gridley
patent: 3003372 (1961-10-01), Findley
patent: 3018674 (1962-01-01), Kohler
patent: 3028771 (1962-04-01), Bunnell
patent: 3119274 (1964-01-01), Short

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