US 2013/0156516 A1Published application

Indexable Cutting Insert and Cutting Tool Therefor

AssigneeIscar, Ltd.

InventorGil Hecht

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Abstract

A cutting tool assembly includes a cutting tool and an indexable cutting insert having an insert index axis. The cutting insert includes parallel insert first and second sides connected by an insert peripheral surface that extends peripherally around the cutting insert. At least one clamping hole opens out to one or both of the insert first and second sides, and at least a portion of the clamping hole is in a clamping region of the cutting insert. The insert peripheral surface includes cutting edges that are spaced-apart and extend from the insert first side to the insert second side. Along a width direction, which is perpendicular to the insert first and second sides, each of the cutting edges is wider than the cutting insert, at least at the cutting region of the cutting insert.

Claims22

Dependent claims

An indexable cutting insert (14) having an insert index axis (CI) and comprising parallel insert first and second sides (22A, 22B) connected by an insert peripheral surface (24) which extends peripherally around the cutting insert (14), and at least one clamping hole opening (26) out to one or both of the insert first and second sides (22A, 22B);

the insert peripheral surface (24) comprising cutting edges (18) which are spaced-apart and extend from the insert first side (22A) to the insert second side (22B);
wherein each three consecutively positioned cutting edges (18A, 18B, 18C) constitute an associated cutting arrangement comprising a central cutting edge (18A) disposed between two peripheral cutting edges (18B, 18C), the central cutting edge (18A) being wider, along a width direction (DW) which is perpendicular to the insert first and second sides (22A, 22B), than any other portion of an associated insert cutting region (CU) defined from the central cutting edge (18A) to at least an imaginary straight line (IL1) connecting the two peripheral cutting edges (18B, 18C);
and
at least a clamping hole portion (48) of the at least one clamping hole (26) is located in an associated insert clamping region (CL) which is defined outside of the associated cutting region (CU).

1 more element

A method of clamping a cutting insert (14) to a cutting tool,

the cutting insert (14) comprising
parallel insert first and second sides (22A, 22B) connected by an insert end (24) which extends peripherally around the cutting insert (14), and
at least one clamping hole (26) opening out to both of the insert first and second sides (22A, 22B);
the cutting tool (12) comprising
a tool head (58), and
a clamping mechanism (16) configured for securing a cutting insert (14) to an insert pocket (62) of the tool head (58);
the insert pocket (62) comprising
a pocket seating surface (72),
at least one pocket wall (74) extending transversely from the pocket seating surface (72) and defining a pocket rear boundary (BR), and
a pocket front edge (76) located on an opposing side of the pocket seating surface (72) from the pocket rear boundary (BR) and extending along a front boundary (BF) of the cutting tool (12);
wherein, in a view perpendicular to the pocket seating surface (72), the tool head (58) and clamping mechanism (16) do not extend past an imaginary inscribed arc (IA) extending along the front boundary (BF);
the method comprising:
a. mounting the cutting insert (14) to the clamp (84) by extending a clamp body portion (84B) of the clamp (84) completely through a clamping hole portion (48) of the at least one clamping hole (26) while leaving a remainder of the at least one clamping hole (26) unoccupied;
and
b. fastening at least one clamp (84) to the cutting tool head (58) to thereby bias the clamp head portion (84B) of the at least one clamp (84) against the cutting insert (14) and secure the cutting insert (14) to the insert pocket (62).

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/452,606Filed 20 Apr 2012
Priority: 14 Dec 2011
Published: 20 Jun 2013
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

B23B 27/1622
With plate-like cutting inserts of special shape clamped against the walls of the recess in the shank by a clamping member acting upon the wall…
B23B 27/045
Cutting-off tools: with chip-breaking arrangements
B23B 27/1614
With exchangeable cutting bits or cutting inserts, e.g. able to be clamped: with plate-like cutting inserts of special shape clamped against the…
B23B 29/043
Tool holders for a single cutting tool: with cutting-off, grooving or profile cutting tools, i.e. blade- or disc-like main cutting parts

Family

Application61/570,369Us provisional application · filed 14 Dec 2011
US 9,174,279 B2Related patent
US 2013/0156516 A1This patent

From the US filing history. Foreign family members aren’t listed.

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