Slotting cutter
AssigneeThe Valeron Corporation
InventorRaymond T. Zweekly
Life of this patent
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Abstract
Improved apparatus is disclosed for positively locating and retaining disposable inserts of a slotting cutter. The apparatus is arranged such that inserts normally used in non-rotating cut-off, parting or grooving tools can be mounted in a relatively narrow substantially circular rotating cutter body, thereby permitting narrower slot formations than heretofore possible with such tools.
Claims16
A slotting cutter comprising:
- a substantially disc shaped body having first and second lateral surfaces substantially parallel to the plane of rotation and substantially perpendicular to the axis of rotation of the body;
- a plurality of pockets spaced about the periphery of the body and extending from one lateral surface to the other, each pocket adapted for receipt of a cutting insert and comprising a substantially rectangular cavity having parallel bottom and top surfaces and a rear surface, at least a portion of the bottom surface shaped for mating receipt of a bottom surface of the cutting insert;
- insert retention means including a clamping portion moveable in the plane of body rotation by flexing into clamping engagement with the insert, each retention means further comprising a substantially planar member positioned in a corresponding pocket and having an insert positioning surface substantially perpendicular to the bottom pocket surface and abutting a rear surface of the insert, a bottom surface abutting a bottom pocket surface portion rearward of the insert, a rear surface abutting the rear pocket surface, a top surface abutting the top pocket surface, and a clamping surface engaging a top surface of the insert;
- and
- actuating means positioned for rotation within the plane of body rotation, operative in at least a first rotative position to urge the clamping portion into engagement with the insert.
In a slotting cutter having a disc shaped body, apparatus for positively locating and retaining a plurality of disposable cutting inserts conventionally used individually in non-rotating cut-off tools, each cutting insert presenting a cutting edge substantially parallel to an axis of rotation of the slotting cutter and each extending substantially the entire width of a slot to be cut, said apparatus comprising:
- a plurality of substantially rectangular pockets spaced abouut the periphery of the cutter and extending axially completely through the cutter body, each pocket having a radially innermost rear surface connecting top and bottom pocket surfaces and an opening at the cutter body periphery shaped for slideable receipt of a rearward portion of a cutting insert, each pocket additionally housing a matingly shaped planar clamping blade having a first portion disposed between a rear surface of the cutting insert and the rear surface of the pocket and a second portion separated from the first portion by a sawcut extending from an opening in the blade abutting the rear surface of the insert and extending toward the rear surface of the pocket terminating at a flexible portion of the blade joining the first and second portions, the second portion abutting the top surface of the pocket and overhanging a top surface of the insert, and a substantially circular camming member having a flatted portion positioned is a mating cavity of the cutter body adjacent the pocket such that the flatted portion of the mating cavity is coextensive with a portion of the top surface of the pocket, the camming member operative in at least a first rotative position to urge the second portion into clamping engagement with the insert via flexing about the flexible portion.
Dependencies are inferred from the claim text.