US3946475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cutting insert locking means
Assignee: Valenite LLC
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Filing: 1975-02-27
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Granted: 1976-03-30
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Expires: 1995-02-27
Abstract
Abstract The invention pertains to the field of cutting tools having indexable replaceable cutting inserts and comprises novel means for locating and locking the individual inserts in place with assurance that the inserts are accurately positioned and firmly held with particular advantage in simplicity and economy of construction. The locking means comprise fastening means engaging the tool body and engaging an extended slidable insert bottom seat anvil such that upon actuation the bottom seat anvil is drawn axially, radially and circumferentially relative to the tool body thereby simultaneously drawing the cutting insert retained on the bottom seat anvil into tight engagement with two insert side locating surfaces formed on the tool body and drawing the bottom seat anvil into tight engagement with the tool body.
Inventors
- 👤 David Alan Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:45
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/22; B23C5/2204; B23C5/2226; B23C5/2265; B23C5/2278; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1908; Y10T407/1912; Y10T407/1914; Y10T407/1916; Y10T407/1918; Y10T407/192; Y10T407/1922; Y10T407/1932; Y10T407/1934; Y10T407/1936; Y10T407/22; Y10T407/2272; Y10T407/2274; Y10T407/2276; Y10T407/2282; Y10T407/2286; Y10T407/2292; Y10T407/23
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
105 words
An indexable polygonal insert cutting tool comprising; a tool body, said body having a pair of insert side locating surfaces, a slot formed in said tool body adjacent said surfaces, a bottom seat anvil in said slot projecting between said surfaces, means to retain an insert on said anvil, and locking means adapted to retain said anvil in said slot with an insert thereon in engagement with said side locating surfaces, said locking means including means urging said anvil with a resultant line of force having a direction oblique to each of said surfaces and bottom seat to simultaneously forceably locate said insert relative thereto.
Claim 2
Dependent Claim
105 words
An indexable polygonal insert cutting tool comprising; a tool body, said body having a pair of insert side locating surfaces, a slot formed in said tool body adjacent said surfaces, a bottom seat anvil in said slot projecting between said surfaces, means to retain an insert on said anvil, and locking means adapted to retain said anvil in said slot with an insert thereon in engagement with said side locating surfaces, said locking means including means urging said anvil with a resultant line of force having a direction oblique to each of said surfaces and bottom seat to simultaneously forceably locate said insert relative thereto.
Claim 3
Dependent Claim
30 words
The cutting tool of claim 1 wherein said locking means includes threaded engaging means and conical engaging means adapted to exert a force of said anvil in said oblique direction.
Claim 4
Dependent Claim
46 words
The cutting tool of claim 1 wherein said locking means includes a shouldered engaging surface in said anvil, threaded engaging means in said body, and threaded fastening means engaging said threaded engaging means and said shouldered surface having a thread axis extending in said oblique direction.
Claim 5
Dependent Claim
117 words
An indexable polygonal insert cutting tool comprising; an annular tool body, said body having a pair of insert side locating surfaces for each of a plurality of inserts, a slot formed in said tool body for each of said inserts adjacent said surfaces, a bottom seat anvil in each slot projecting between said surfaces, means to retain an insert on each anvil, and locking means adapted to retain each anvil in said slot with an insert thereon in engagement with said side locating surfaces, said locking means including means urging said anvil with a line of force having a direction oblique to each of said surfaces and bottom seat to simultaneously forceably locate said insert relative thereto.
Claim 6
Dependent Claim
117 words
An indexable polygonal insert cutting tool comprising; an annular tool body, said body having a pair of insert side locating surfaces for each of a plurality of inserts, a slot formed in said tool body for each of said inserts adjacent said surfaces, a bottom seat anvil in each slot projecting between said surfaces, means to retain an insert on each anvil, and locking means adapted to retain each anvil in said slot with an insert thereon in engagement with said side locating surfaces, said locking means including means urging said anvil with a line of force having a direction oblique to each of said surfaces and bottom seat to simultaneously forceably locate said insert relative thereto.
Claim 7
Dependent Claim
30 words
The cutting tool of claim 4 wherein said insert side locating surfaces comprise surfaces of revolution formed in said body, said surfaces of revolution forming a groove intersecting said slots.
Claim 8
Dependent Claim
18 words
The cutting tool of claim 4 wherein one of said insert side locating surfaces comprises a conical surface.
Claim 9
Dependent Claim
35 words
The cutting tool of claim 6 wherein said conical insert side locating surface provides line contact with an insert sidewall, and the other insert side locating surface is crowned for point contact with another sidewall.
Claim 10
Dependent Claim
15 words
The cutting tool of claim 4 wherein said side locating surfaces comprise intersecting planar surfaces.
Claim 11
Dependent Claim
23 words
The cutting tool of claim 8 wherein said locating surfaces and anvil are adapted for negative rake inserts having 0° sidewall relief angle.
Claim 12
Dependent Claim
18 words
The cutting tool of claim 5 wherein one of said surfaces of revolution is a radial planar surface.
Claim 13
Dependent Claim
26 words
The cutting tool of claim 10 wherein said locating surfaces and anvil are adapted for positive rake inserts having sidewall area contact with said radial surface.
Claim 14
Dependent Claim
19 words
The cutting tool of claim 6 wherein said conical insert side locating surface extends in a nearly radial direction.
Claim 15
Dependent Claim
19 words
The cutting tool of claim 6 wherein said conical insert side locating surface extends in a nearly axial direction.
Claim 16
Dependent Claim
47 words
The cutting tool of claim 1 wherein one of said insert side locating surfaces provides extended contact with said insert and the other of said side insert side locating surfaces providing limited contact with said insert to accomodate angular conformation of said insert with said extended contact.
Claim 17
Dependent Claim
59 words
The cutting tool of claim 1 wherein said anvil is provided with limited contact means for engaging a wall of said slot extending normal to said bottom seat at a location remote from said side locating surfaces to accommodate angular positioning of said anvil on said bottom seat determined by engagement of said insert with said side locating surfaces.
Claim 18
Dependent Claim
146 words
An indexable polygonal insert cutting tool comprising; an annular tool body, said body having a pair of insert side locating surfaces for each of a plurality of inserts, a slot formed in said tool body for each of said inserts adjacent said surfaces, a bottom seat anvil in each slot projecting between said surfaces, means to retain an insert on each anvil, and locking means adapted to retain each anvil in said slot with an insert thereon in engagement with said side locating surfaces, said locating surfaces comprising surfaces of revolution integrally formed in said annular body and coaxial therewith, one of said insert side locating surfaces being convexly curved in a plane parallel with the axis of revolution for central contact with a side of said insert, the other of said insert side locating surfaces providing for extended contact with another side of said insert.
Claim 19
Dependent Claim
146 words
An indexable polygonal insert cutting tool comprising; an annular tool body, said body having a pair of insert side locating surfaces for each of a plurality of inserts, a slot formed in said tool body for each of said inserts adjacent said surfaces, a bottom seat anvil in each slot projecting between said surfaces, means to retain an insert on each anvil, and locking means adapted to retain each anvil in said slot with an insert thereon in engagement with said side locating surfaces, said locating surfaces comprising surfaces of revolution integrally formed in said annular body and coaxial therewith, one of said insert side locating surfaces being convexly curved in a plane parallel with the axis of revolution for central contact with a side of said insert, the other of said insert side locating surfaces providing for extended contact with another side of said insert.
Claim 20
Dependent Claim
134 words
An indexable polygonal insert cutting tool comprising: a tool body, an insert pocket in said body having a pair of insert side locating surfaces in two intersecting planes, a slot formed in said tool body adjacent said pocket having a seating wall in a third plane intersecting said other two planes, a bottom seat anvil in said slot projecting under said pocket and seated on said wall, means to retain an insert on said anvil, and locking means adapted to retain said anvil in said slot in engagement with said wall with an insert thereon in engagement with said side locating surfaces, said locking means including means urging said anvil with a resultant line of force having a direction oblique to each of said three planes to simultaneously forceably locate said insert relative thereto.
Claim 21
Dependent Claim
134 words
An indexable polygonal insert cutting tool comprising: a tool body, an insert pocket in said body having a pair of insert side locating surfaces in two intersecting planes, a slot formed in said tool body adjacent said pocket having a seating wall in a third plane intersecting said other two planes, a bottom seat anvil in said slot projecting under said pocket and seated on said wall, means to retain an insert on said anvil, and locking means adapted to retain said anvil in said slot in engagement with said wall with an insert thereon in engagement with said side locating surfaces, said locking means including means urging said anvil with a resultant line of force having a direction oblique to each of said three planes to simultaneously forceably locate said insert relative thereto.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |