Cutting tool and tool holder having separate rear abutment and wedged rear stopper surfaces
AssigneeIscar, Ltd.
InventorsGil Hecht, Sergey Chistyakov
Life of this patent
Estimating the term…
Abstract
A cutting tool includes a holder and a cutting insert releasably clamped in the holder. The holder has a rear pocket surface which includes a pocket abutment surface and an adjacent pocket wedge surface. The cutting insert has at least one abutment surface and an adjacent wedge surface. When the cutting tool is assembled but not in use, the pocket abutment surface of the holder abuts the abutment surface of the cutting insert, and the wedge surface of the holder is facing and spaced apart from the wedge surface of the cutting insert. During cutting operations, the wedge surface of the insert may abut against the wedge surface of the holder.
Claims23
A cutting tool (1, 1′), comprising:
- a cutting insert (10, 10′, 10″) extending along an insert longitudinal axis (L) defining an insert forward direction (Fi) and an insert rearward direction (Ri), the insert (10, 10′, 10″) comprising:
- an insert forward surface (20) and an opposing insert rearward surface (30), with an insert peripheral surface (40) extending therebetween;
- the insert rearward surface (30) comprising an insert rear abutment surface (32) and a V-shaped insert rear wedge surface (34);
- the insert peripheral surface (40) comprising an insert top surface (42), an opposing insert bottom surface (46), a first insert side surface (50) and an opposing second insert side surface (52);
- and
- a first cutting edge (54) formed at an intersection of the insert top surface (42) and the insert forward surface (20);
- and
- a tool holder (100, 100′) extending along a holder longitudinal axis (O) defining a holder forward direction (Fh) and a holder rearward direction (Rh), comprising:
- a first holder side surface (150) and an opposing second holder side surface (152), with a holder front surface (120) extending therebetween;
- and
- an insert pocket (110) opening out to the holder front surface (120), the first holder side surface (150) and the second holder side surface (152), the insert pocket (110) comprising:
- a top pocket surface (142) and an opposing bottom pocket surface (146), with a rear pocket surface (130) located therebetween, the rear pocket surface (130) comprising:
- a pocket abutment surface (132);
- and
- a V-shaped pocket wedge surface (134) distinct from the pocket abutment surface (132);
- wherein:
- the cutting tool (1, 1′) is adjustable between a disassembled state and an assembled state;
- and
- when the cutting tool (1, 1′) is in the assembled state:
- the cutting insert (10, 10′, 10″) is releasably clamped in the insert pocket (110);
- the insert top surface (42) abuts the top pocket surface (142);
- the insert bottom surface (46) abuts the bottom pocket surface (146);
- the insert rear abutment surface (32) abuts against the pocket abutment surface (132);
- and
- the insert rear wedge surface (34) faces the pocket wedge surface (134) and is spaced apart therefrom by a minimal margin d.
A double-ended cutting insert (10, 10′) having an insert longitudinal axis (L) defining an insert forward direction (Fi) and an insert rearward direction (Ri), an insert vertical axis (V) defining an insert top direction (Ti) and an insert bottom direction (Bi), the insert vertical axis (V) intersecting the insert longitudinal axis (L), with a longitudinal insert plane (P1) defined as containing the insert vertical axis (V) and the insert longitudinal axis (L), the cutting insert (10, 10′) comprising:
- an insert forward surface (20) and an opposing insert rearward surface (30), with an insert peripheral surface (40) extending therebetween;
- an insert top surface (42) and an opposing insert bottom surface (46), each extending along the insert peripheral surface (40);
- a first cutting edge (54) formed at an intersection of the insert top surface (42) and the insert forward surface (20);
- and
- a second cutting edge (56) formed at an intersection of the insert peripheral surface (40) and the insert rearward surface (30);
- wherein:
- the insert rearward surface (30) comprises:
- an insert rear relief surface (38) extending from the second cutting edge (56);
- an insert rear abutment surface (32);
- an insert rear wedge surface (34);
- the insert forward surface (20) comprises:
- an insert forward relief surface (28) extending from the first cutting edge (54);
- an insert forward abutment surface (22);
- and
- an insert forward wedge surface (24).
A tool holder (100, 100′) extending along a holder longitudinal axis (O) defining a holder forward direction (Fh) and a holder rearward direction (Rh), the tool holder (100) comprising:
- a first holder side surface (150) and an opposing second holder side surface (152), with a holder front surface (120) extending therebetween;
- and
- an insert pocket (110) opening out to the holder front surface (120), the first holder side surface (150) and the second holder side surface (152), the insert pocket (110) comprising:
- a top pocket surface (142) and an opposing bottom pocket surface (146), with a rear pocket surface (130) located therebetween;
- wherein:
- the rear pocket surface (130) comprises:
- a pocket abutment surface (132);
- and
- a V-shaped pocket wedge surface (134) distinct from the pocket abutment surface (132).
Dependencies are inferred from the claim text.