Device for producing drilled holes with an undercut

Details Device for producing drilled holes with an undercut Device for producing drilled holes with an undercut

1992-08-24

1993-07-13

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Machine frame

Including pivotally mounted tool-carrier

408147, 409143, 409201, B23B 4100

Patent

active

052267636

ABSTRACT:
A device for producing drilled holes with an undercut, especially in facing panels, has a drilling machine, a drilling tool, an adaptor receiving the drilling tool and connected with the drilling machine so as to transfer torque, a holder, a bearing bush secured in the holder and provided with a rotatable and swivelable guide sleeve, a wobble plate secured on the drilling machine and the guide sleeve, a plurality of cylinders arranged on the holder concentrically about a center line of the guide sleeve and engaging the wobble plate. The cylinders are actuated and controlled in succession to produce a wobbling movement for reaming out an undercut in a drilled hole.

REFERENCES:
patent: 2823591 (1958-02-01), Craddock et al.
patent: 2969000 (1961-01-01), Grobecker
patent: 4365917 (1982-12-01), Harmand
patent: 5018912 (1991-05-01), Reitz
patent: 5090848 (1992-02-01), Haug
patent: 5127777 (1992-07-01), Fischer et al.

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