Means for positioning arched halving-joints of frame portions an

Details Means for positioning arched halving-joints of frame portions an Means for positioning arched halving-joints of frame portions an

1989-02-27

1991-04-09

Bray, W. Donald

Woodworking

Shaping machine

Grooving machine

144 2R, 144133R, 144154, 269 63, 269 69, 269303, B27C 500

Patent

active

050056182

ABSTRACT:
For positioning and milling halving-joints of arched frame portions a clamping rail is rotatably and movably mounted on a workable. Arresting means associated to the clamping rail engage counter elements of a gauge. Clamping means determine the position of the workpiece for milling trapezoidal bevels. The milling operation is performed by means of a milling tool unit, which is arranged at the working table and is adjustable relative to the workpiece onto different shapes of arches. By means of a separate clamping rail recesses are milled into frame components resp. struts to be inserted into the arches, which are rotatable over a predetermined angle so that the recesses can be adapted to the required shape of bevels within the arched frame portions without requiring different tools for different angles.

REFERENCES:
patent: 3865161 (1975-02-01), Vizziello et al.
patent: 4223708 (1980-09-01), Paris, Jr. et al.
patent: 4243082 (1981-01-01), Paris, Jr. et al.

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