Cutter tool with a plurality of hard cutting teeth
OwnerGlynn A. Ellisinventor
Life of this patent
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Abstract
A cutter tool of the kind having a blade body with teeth which are provided with hard material tips is so machined that the side faces of the tips are dished or otherwise concavely contoured. The machining involves mounting the blade body on a worktable and first machining the side faces on one side of the tips to produce a reference plane including the ends of the cutting edges of the tip and using this plane as a reference plane for subsequent machining of the other side faces and the surfaces of the blade body.
Claims9
A planar cutter blade including a body having oppositely presented flat parallel lateral faces and having an edge region with a series of regularly spaced gullet forming notches provided therein, each such notch being shaped to provide a workpiece cutter tip insert receiving region located, in relation to the direction of intended cut of the blade, at the rear of the notch;
- a cutter tip secured in each said region of the gullets each tip presenting a rear face and a bottom face towards the tip receiving region of the notch and having a front face and a top face which are inclined to each other to define the workpiece cutting edge of the tip, and two opposed side faces which are inclined towards each other both in the direction front face towards the rear face and in the direction top face towards the bottom face, with each of said side faces also being dished in such manner that the lines of intersection of the two side faces with the front face are curved inwards to each other whereby the narrowest width region of the front face is intermediate the top face and the bottom face.
Dependencies are inferred from the claim text.