Woodworking – Rotary cutter – Solid
Patent
1987-02-09
1988-07-05
Bray, W. Donald
Woodworking
Rotary cutter
Solid
144176, 144218, 241 92, 241298, 407113, 407117, B27G 1308
Patent
active
047547898
ABSTRACT:
A three-edged tool (12) for a woodworking machine. The edges (18,19,20) of the tool are arranged with equal angular spacing about a tool body and protrude therefrom. In the surfaces (24,25,26) between the edges are recesses (27,28,29) so shaped as to retain the tool by mating engagement with a correspondingly shaped protrusion (30) provided on a tool carrier (10), and to act as a kerf in order to guide a break in case of overload of an edge (18) to the area between two recesses (27,28). Fastening means for the tool include a support part (14) provided on the tool carrier and a clamping part (15). The support part (14) carries the protrusion (30), which is shaped to engage in a recess (28) of the tool, and has a support surface (14') for supporting a clearance surface of an edge (19) which is inactive when the tool is mounted on the tool carrier. The clamping part (15) has a clamping surface (22) which is adapted to press against the clearance surface of the second inactive edge (20) of the tool.
REFERENCES:
patent: 4271882 (1981-06-01), Valo
patent: 4545413 (1985-10-01), Sunberg et al.
patent: 4669516 (1987-06-01), Carpenter
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