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US 12,491,565 B2Granted
Cutting insert having two forwardly converging abutment surfaces, insert holder and cutting tool
AssigneeIscar, Ltd.
InventorShimon Athad
Life of this patent
Estimating the term…
Abstract
A cutting insert includes opposing insert first and second side surfaces. The insert first side surface includes a first mounting arrangement. The first mounting arrangement includes a) at least one first side abutment surface facing away from the insert second side surface, b) a first stopper abutment surface oriented transversely to the at least one first side abutment surface and c) two opposite-facing first wedge abutment surfaces oriented transversely to the at least one first side abutment surface and converging forwardly. An insert holder has a corresponding pocket mounting arrangement for engagement with the first mounting arrangement.
Claims42
A replaceable cutting insert (22, 122) having an insert longitudinal axis (A) defining opposite forward and rearward directions (DF, DR), the cutting insert (22, 122) comprising:
- opposing insert front and rear end surfaces (34, 36) and an insert peripheral surface (32) extending therebetween, the insert peripheral surface (32) comprising opposing insert first and second side surfaces (28, 30) and opposing insert upper and lower surfaces (38, 40) connecting the insert first and second side surfaces (28, 30);
- a forwardly disposed first cutting portion (42) comprising a first cutting edge (48) formed at the intersection of the insert front end surface (34) and the insert upper surface (38);
- a rearwardly disposed second cutting portion (42b) comprising a second cutting edge (48b) formed at the intersection of the insert rear end surface (36) and the insert upper surface (38);
- and
- a mounting portion (44) connected to the first cutting portion (42) and the second cutting portion (42b), the mounting portion comprising:
- an insert through bore (52) extending along a through bore axis (T) and opening out to the insert first and second side surfaces (28, 30);
- and
- a first mounting arrangement (54) formed on the insert first side surface (28) and comprising:
- at least one first side abutment surface (56) facing away from the insert second side surface (30);
- a first stopper abutment surface (58) oriented transversely to the at least one first side abutment surface (56);
- and
- two opposite-facing first wedge abutment surfaces (60, 62) oriented transversely to the at least one first side abutment surface (56) and converging towards each other at an acute first wedge angle (α) in a direction towards the first cutting edge (48);
- a second mounting arrangement (54b) formed on the insert second side surface (30) and comprising:
- at least one second side abutment surface (56b) facing away from the insert first side surface (28);
- a second stopper abutment surface (58b) oriented transversely to the at least one second side abutment surface (56b);
- and
- two opposite-facing second wedge abutment surfaces (60b, 62b) oriented transversely to the at least one second side abutment surface (56b) and converging towards each other in a direction towards the second cutting edge (48b) at a second wedge angle (αb);
- wherein:
- the first stopper abutment surface (58) is spaced apart from, and distinct from, both of the two first wedge abutment surfaces (60, 62);
- the first stopper abutment surface (58) is further from the first cutting edge (48) than the two first wedge abutment surfaces (60, 62);
- the second stopper abutment surface (58b) is spaced apart from, and distinct from, both of the two second wedge abutment surfaces (60b, 62b);
- and
- the two second wedge abutment surfaces 60b, 62b) are closer to the second cutting edge (48b) than the second stopper abutment surface (58b).
20 more elements
An insert holder (24) having a holder longitudinal axis (B) defining opposite forward and rearward directions (DF, DR), the insert holder (24) comprising:
- a holder forward end surface (70) and a holder peripheral surface (72) forming a circumferential boundary thereof, the holder peripheral surface (72) extending about the holder longitudinal axis (B) and comprising at a holder forward end (68) opposing holder pocket near-side and far-side surfaces (78, 80);
- and
- a forwardly disposed insert pocket (26) recessed in the holder pocket near-side surface (78), the insert pocket (26) comprising:
- a pocket opening (82) that opens out to the holder forward end surface (70);
- a pocket base surface (84);
- a threaded pocket bore (86) extending along a threaded bore axis (E) and opening out to the pocket base surface (84);
- a pocket mounting arrangement (88) formed on the pocket base surface (84) and comprising:
- at least one pocket side abutment surface (90) facing away from the holder pocket far-side surface (80);
- a pocket stopper abutment surface (96) oriented transversely to the at least one pocket side abutment surface (90);
- and
- two opposite-facing pocket wedge abutment surfaces (98, 100) oriented transversely to the at least one pocket side abutment surface (90) and converging towards each other at an acute pocket wedge angle (μ) in a direction towards the pocket opening (82), the two pocket wedge abutment surfaces (98, 100) comprise a pocket wedge upper abutment surface (98) and a pocket wedge lower abutment surface (100), the pocket wedge upper abutment surface (98) being closer to the holder upper surface (74) than the pocket wedge lower abutment surface (100);
- wherein:
- the pocket stopper abutment surface (96) is spaced apart from, and distinct from, both of the two pocket wedge abutment surfaces (98,100);
- the pocket stopper abutment surface (96) is further from the pocket opening (82) than the two pocket wedge abutment surfaces (98, 100);
- and
- the pocket wedge upper abutment surface (98) is further forward than the pocket wedge lower abutment surface (100).
13 more elements
A replaceable cutting insert (22, 122) having an insert longitudinal axis (A) defining opposite forward and rearward directions (DF, DR), the cutting insert (22, 122) comprising:
- opposing insert front and rear end surfaces (34, 36) and an insert peripheral surface (32) extending therebetween, the insert peripheral surface (32) comprising opposing insert first and second side surfaces (28, 30) and opposing insert upper and lower surfaces (38, 40) connecting the insert first and second side surfaces (28, 30);
- a forwardly disposed first cutting portion (42) comprising a first cutting edge (48) formed at the intersection of the insert front end surface (34) and the insert upper surface (38);
- and
- a mounting portion (44) connected to the first cutting portion (42), the mounting portion comprising:
- an insert through bore (52) extending along a through bore axis (T) and opening out to the insert first and second side surfaces (28, 30);
- and
- a first mounting arrangement (54) formed on the insert first side surface (28) and comprising:
- three spaced apart first side abutment surfaces (56) facing away from the insert second side surface (30), the three first side abutment surfaces (56) being angularly spaced apart about the through bore axis (T);
- a first stopper abutment surface (58) oriented transversely to the first side abutment surfaces (56);
- and
- two opposite-facing first wedge abutment surfaces (60, 62) oriented transversely to the first side abutment surfaces (56) and converging towards each other at an acute first wedge angle (α) in a direction towards the first cutting edge (48);
- wherein:
- the first stopper abutment surface (58) is spaced apart from, and distinct from, both of the two first wedge abutment surfaces (60, 62);
- and
- the first stopper abutment surface (58) is further from the first cutting edge (48) than the two first wedge abutment surfaces (60, 62).
12 more elements
A cutting tool (20) comprising:
- an insert holder (24) having a holder longitudinal axis (B) defining opposite forward and rearward directions (DF, DR), the insert holder 24 comprising:
- a holder forward end surface (70) and a holder peripheral surface (72) forming a circumferential boundary thereof, the pocket peripheral surface (72) extending about the holder longitudinal axis (B) and comprising at the holder forward end (68) opposing holder pocket near-side and far-side surfaces (78, 80);
- and
- a forwardly disposed insert pocket (26) recessed in the holder pocket near-side surface (78), the insert pocket comprising:
- a pocket opening (82) that opens out to the holder forward end surface (70);
- a pocket base surface (84);
- a threaded pocket bore (86) extending along a threaded bore axis (E) and opening out to the pocket base surface (84);
- a pocket mounting arrangement (88) formed on the pocket base surface (84) and comprising:
- at least one pocket side abutment surface (90) facing away from the holder pocket far-side surface (80);
- a pocket stopper abutment surface (96) oriented transversely to the at least one pocket side abutment surface (90);
- and
- two opposite-facing pocket wedge abutment surfaces (98, 100) oriented transversely to the at least one pocket side abutment surface (90) and converging towards each other at an acute pocket wedge angle (μ) in a direction towards the pocket opening (82), the pocket stopper abutment surface (96) spaced apart from, and distinct from, both of the two pocket wedge abutment surfaces (98,100), the pocket stopper abutment surface (96) further from the pocket opening (82) than the two pocket wedge abutment surfaces (98, 100);
- and
- a cutting insert (22, 122), removably attached to the insert holder (24) by a fastening member (104), the cutting insert (22, 122) having an insert longitudinal axis (A) and comprising:
- opposing insert front and rear end surfaces (34, 36) and an insert peripheral surface (32) extending therebetween, the insert peripheral surface (32) comprising opposing insert first and second side surfaces (28, 30) and opposing insert upper and lower surfaces (38, 40) connecting the insert first and second side surfaces (28, 30);
- a forwardly disposed first cutting portion (42) comprising a first cutting edge (48) formed at the intersection of the insert front end surface (34) and the insert upper surface (38);
- and
- a mounting portion (44) connected to the first cutting portion (42), the mounting portion comprising:
- an insert through bore (52) extending along a through bore axis (T) and opening out to the insert first and second side surfaces (28, 30);
- and
- a first mounting arrangement (54) formed on the insert first side surface (28) and comprising:
- at least one first side abutment surface (56) facing away from the insert second side surface (30);
- a first stopper abutment surface (58) oriented transversely to the at least one first side abutment surface (56);
- and
- two opposite-facing first wedge abutment surfaces (60, 62) oriented transversely to the at least one first side abutment surface (56) and converging towards each other at an acute first wedge angle (α) in a direction towards the first cutting edge (48), the first stopper abutment surface (58) spaced apart from, and distinct from, both of the two first wedge abutment surfaces (60, 62), the first stopper abutment surface (58) further from the first cutting edge (48) than the two first wedge abutment surfaces (60, 62).
22 more elements
Dependencies are inferred from the claim text.