Rotary cutter head
AssigneeGreat Lakes Carbide Tool Mfg. Inc.
InventorRuss Martin
Life of this patent
Estimating the term…
Abstract
A rotary cutter head comprises rotary body, resilient clamping arm, and at least one cutting blade. The clamping arm clamps the cutting blade radially inwardly first rather than in a circumferential direction in order to positively lock the cutting blade radially, and thereby prevent the cutting blade from migrating out of position slightly during high speed rotation of the cutter head.
Claims13
A cutting blade adapted to prevent radially outward movement after installation in a recess of a rotary cutter head, the recess defining a recess bottom, the size of the recess being controlled by a clamp having a tab, the cutting blade comprising:
- a base end, an outer end, and a pair of opposed side ends extending transversely between the base end and the outer end;
- a leading face parallel to a trailing face, the leading and trailing faces extending transversely between opposed side ends and transversely between the base end and outer end, the leading face intersecting the outer end to form a cutting edge;
- a slot adapted to receive the tab, the slot extending laterally between opposed side ends, the slot including a slot bottom and inner and outer walls on opposed sides of the slot bottom;
- means between the inner wall of the slot and the base end for ensuring clamping of the cutting blade in a radially inward direction when in use with the clamp such that the base end and the recess bottom are engaged and radially outward movement of the cutting blade is prevented after the cutting blade has been installed within the recess of the rotary cutter head.
A cutting blade adapted to prevent radially outward movement when installed in a recess of a rotary cutter head, the recess defining a recess bottom and the rotary cutter head having a clamping member with an integral tab, the cutting blade comprising:
- a base end, an outer end, and a pair of opposed sides extending transversely between the base end and the outer end;
- a leading face substantially parallel to a trailing face, the leading and trailing faces extending transversely between opposed side ends and transversely between the base end and the outer end, the leading face intersecting the outer end to form a cutting edge;
- and
- a slot formed in the leading face and extending laterally between opposed side ends, the slot including a slot bottom and inner and outer walls on opposed sides of the slot bottom, the inner wall of the slot and the base end spaced apart a predetermined distance such that when the clamping member is driven radially inwardly the integral tab engages the inner wall of the slot and the base end engages the recess bottom thereby preventing radially outward movement of the cutting blade after being clamped in the recess of the rotary cutter head.
A rotary cutter head, comprising:
- a cutter head body oriented for rotation about a rotational axis and having a recess, and a clamp for controlling the size of the recess with a tab provided on the clamp, the recess being defined by a leading face, a recess bottom and a trailing face;
- and
- a cutting blade having a base end positioned against the recess bottom and an axially-extending slot receiving the tab;
- wherein the clamp has a tightened position in which the tab positively biases the cutting blade against the recess bottom and thereby prevents the cutting blade from slipping radially relative to the rotational axis during operation.
Dependencies are inferred from the claim text.