Rotary cutting head assembly

Details Rotary cutting head assembly Rotary cutting head assembly

1993-05-12

1995-03-21

Bray, W. Donald

Woodworking

Rotary cutter

Polygonal rotary cutter having plane bit seat

83674, 8369811, 144117R, 144218, 144241, 407113, 303461, 30351, B27C 110, B27G 1304

Patent

active

053987390

ABSTRACT:
The present invention includes a rotatable cutting head assembly (12), such as for a planer or a jointer, which planes a work surface on a workpiece (22). The cutting head assembly (12) comprises a rotatable elongate support block (30), a pair of blades (32), and a pair of elongate retainers (34). Each blade (32) has a straight elongate cutting edge (50,51) which extends parallel to and is spaced radially from the longitudinal axis (36) of the support block (30). Each retainer (34) is attachable to the support block (30) to clamp a respective blade (32) therebetween. Retainers (34), blades (32) and support block (30) have cooperating alignment ribs (64) and elongate slots (52). The slots (52) extend parallel to the longitudinal axis of the support block. The cooperating alignment ribs and elongate slots maintain cutting edges (50,51) at equal radial distances from the longitudinal axis (36) while permitting the blades (32) to be longitudinally adjustable relative to the support block (30) to enable a user to offset any longitudinally aligned nicks formed on the cutting edges (50,51) during planing so that the cutting edges (50,51) create a smooth planar surface which is free of ridges on workpiece (22).

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