← Back to Patent Explorer
US3885281A Expired / Lapsed US ⏱️ 0.0 years remaining

Cutting insert with chip control

Assignee: Iscar Ltd
•
Filing: 1974-06-10
•
Granted: 1975-05-27
•
Expires: 1994-06-10
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract This disposable polygonal, indexible cutting insert is provided with longitudinally curved channels, along the side edges of the insert, meeting at the corners of the insert. These channels are also transversely curved. At each corner of the insert, V-shaped shallow grooves are depressed into the joining or merging portions of the deeper longitudinal channels. With this construction the shallow, corner V-grooves provide good chip control for shallow depth cuts of the cutting tool and for fine longitudinal feed of the cutting tool relative to the work piece, per revolution of the rotating work piece, whereas the longitudinally curved deeper channels alongside the edges of the insert provide for good chip control for greater depth cuts and for greater longitudinal feed of the tool relative to the work piece, per revolution of the work piece. When profiling, both the shallow corner V grooves and the deeper longitudinal side channels, automatically provide good chip control as the depth of the cut increases and decreases during the profiling operation.

Inventors

  • 👤 Abraham M Stambler

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-03 00:55
CPC Classifications
B; B23; B23B; B23B27/00; B23B27/14; B23B27/16; B23B27/1625; B23B27/1637; B23B2200/00; B23B2200/32; B23B2200/323; B23B2205/00; B23B2205/16; Y; Y10; Y10T; Y10T407/00; Y10T407/23; Y10T407/235

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 89 words
A cutting insert comprising a polygonal shaped piece of material for machine cutting of steel, having straight side edges meeting at the corners of said piece, said piece having a surface formed with longitudinal channels alongside said side edges, said channels merging at the corners of said piece, and said piece being formed with V-shaped grooves depressed into said channels at the corners of said piece, each V-shaped groove having legs aligned with two adjoining ends of adjacent channels, respectively, said legs merging at the apeces of said piece.
Claim 2
Dependent Claim 89 words
A cutting insert comprising a polygonal shaped piece of material for machine cutting of steel, having straight side edges meeting at the corners of said piece, said piece having a surface formed with longitudinal channels alongside said side edges, said channels merging at the corners of said piece, and said piece being formed with V-shaped grooves depressed into said channels at the corners of said piece, each V-shaped groove having legs aligned with two adjoining ends of adjacent channels, respectively, said legs merging at the apeces of said piece.
Claim 3
Dependent Claim 12 words
The combination of claim 1, said channels being deeper than said grooves.
Claim 4
Dependent Claim 17 words
The combination of claim 2, said legs being of less than half the length of said channels.
Claim 5
Dependent Claim 15 words
The combination of claim 3, said channels and grooves being of downwardly curved transverse cross-section.
Claim 6
Dependent Claim 22 words
The combination of claim 4, said legs being closer to the outer sides of said channels than to the inner sides thereof.
Claim 7
Dependent Claim 20 words
The combination of claim 5, said channels being longitudinally inclined inwardly from the outer ends thereof toward the middle thereof.
Claim 8
Dependent Claim 11 words
The combination of claim 1, said insert having a center hole.
Claim 9
Dependent Claim 29 words
The conbination of claim 1, said V shaped grooves being wholly located at the junctions of said channels and terminating short of portions of said channels between said junctions.

References Cited (Backward Citations)

US3395434A Cited
US3815191A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1978-05-26 1978-11-25 1979-05-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1982-05-26 1982-11-25 1983-05-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1986-05-26 1986-11-25 1987-05-27 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag