Removable cutting blades for a helical cutterhead

Details Removable cutting blades for a helical cutterhead Removable cutting blades for a helical cutterhead

1996-11-13

1998-04-14

Bray, W. Donald

Woodworking

Process

Mechanical cutting or shaping

144230, 144241, 144329, 407 47, 407 48, B27L 100, B27C 100, B26D 100

Patent

active

057381569

ABSTRACT:
A removable cutterhead insert for use in a helical cutterhead for an industrial woodworking machine, the helical cutterhead including a generally cylindrical portion, a plurality of circumferential, spaced grooves extending into the cutterhead body from the periphery of the cylindrical portion and adapted to receive the removable cutterhead inserts, and fasteners for removably securing the cutterhead inserts in the grooves; the cutterhead insert includes a mild steel insert body and two blade units; the insert body having raised portions having triangular pockets formed therein so as to have two inwardly-facing flat portions, a hole to receive the fasteners for removably securing the cutterhead insert in the grooves between the inwardly-facing flat portions and two bolt holes to secure the two blade units to the insert body; and the blade units are triangular with cut-off corners each including a blade edge and configured so as not to occlude the countersunk hole and to have the blades edges disposed to align with the blade edges of other blade units in other insert bodies to form a substantially helical blade when the blade units are secured to the insert body in a cutterhead.

REFERENCES:
patent: 4265574 (1981-05-01), Eckle
patent: 4830073 (1989-05-01), De Abreu
patent: 5603365 (1997-02-01), Stewart

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