Patent US3701187A successfully refreshed from Google Patents.
US3701187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slotting cutter and indexable inserts therefor
Assignee: Ingersoll Milling Machine Co
•
Filing: 1970-12-15
•
Granted: 1972-10-31
•
Expires: 1990-12-15
Abstract
Abstract Ribbed cutting inserts providing scalloped cutting edges are spaced angularly around the periphery of a supporting disk and are staggered relative to one another along the axis of the disk to remove laterally spaced chips from the bottom of the slot while the sides of the slot are face milled by side cutting inserts spaced angularly from the ribbed inserts.
Inventors
- 👤 Donald S Erkfritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:19
CPC Classifications
B; B23; B23C; B23C5/00; B23C5/16; B23C5/20; B23C5/202; B23C5/22; B23C5/2204; B23C5/2226; B23C2200/00; B23C2200/08; B23C2200/085; B23C2200/12; B23C2200/125; B23C2200/20; B23C2200/206; B23C2200/36; B23C2200/367; B23C2220/00; B23C2220/36; Y; Y10; Y10T; Y10T407/00; Y10T407/19; Y10T407/1906; Y10T407/1932; Y10T407/1934; Y10T407/1936; Y10T407/1942; Y10T407/1952; Y10T407/1956; Y10T407/1962; Y10T407/23; Y10T407/24
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
316 words
A slot forming cutter having, in combination, a body in the form of a rotary circular disk having chip clearance recesses opening outwardly from and spaced angularly around the disk periphery, a tangentially extending platform adjacent the trailing end of each recess for supporting a cutting insert and having a threaded hole, a radially disposed backing abutment at the trailing end of said platform, a plurality of indexable inserts of identical construction comprising centrally apertured rectangular blocks of cutting material, one seated on each of said platforms and each crowded against the respective abutment by a screw extending through said insert hole and tightened into said threaded hole, each of said inserts thus secured to said disk having one side comprising a plurality of grooves and intervening ribs paralleling the plane of said disk and providing at their leading ends a cutting face and a scalloped cutting edge for removing from a workpiece separate chips spaced laterally across the slot to be formed and cut from the work by the crest portions of the scallops of said cutter edges, a plurality of second insert platforms angularly spaced around said disk and trailing the respective ones of said first platforms, inserts identical with said first inserts similarly seated on said second platforms, the screw holes in the said second platforms being offset axially from the screw holes in said first platforms so that the cutting faces on the leading ends of the ribs of said second inserts remove the material from the adjacent scallop of work material left by the passage of the corresponding first cutting faces, anD means secured to said disk and providing pairs of cutting edges angularly spaced around the disk from said first and second inserts and operating during rotation of the disk to face mill the side walls of the slot cut in each pass of said inserts through the work material.
Claim 2
Dependent Claim
316 words
A slot forming cutter having, in combination, a body in the form of a rotary circular disk having chip clearance recesses opening outwardly from and spaced angularly around the disk periphery, a tangentially extending platform adjacent the trailing end of each recess for supporting a cutting insert and having a threaded hole, a radially disposed backing abutment at the trailing end of said platform, a plurality of indexable inserts of identical construction comprising centrally apertured rectangular blocks of cutting material, one seated on each of said platforms and each crowded against the respective abutment by a screw extending through said insert hole and tightened into said threaded hole, each of said inserts thus secured to said disk having one side comprising a plurality of grooves and intervening ribs paralleling the plane of said disk and providing at their leading ends a cutting face and a scalloped cutting edge for removing from a workpiece separate chips spaced laterally across the slot to be formed and cut from the work by the crest portions of the scallops of said cutter edges, a plurality of second insert platforms angularly spaced around said disk and trailing the respective ones of said first platforms, inserts identical with said first inserts similarly seated on said second platforms, the screw holes in the said second platforms being offset axially from the screw holes in said first platforms so that the cutting faces on the leading ends of the ribs of said second inserts remove the material from the adjacent scallop of work material left by the passage of the corresponding first cutting faces, anD means secured to said disk and providing pairs of cutting edges angularly spaced around the disk from said first and second inserts and operating during rotation of the disk to face mill the side walls of the slot cut in each pass of said inserts through the work material.
Claim 3
Dependent Claim
65 words
A slot forming cutter as defined in claim 1 including a third set of insert platforms similar to said first and second platforms, inserts identical with said first and second inserts similarly seated on the third platforms, the screw holes of said second and third sets of platforms being respectively equidistantly spaced from and disposed on the opposite sides of the said first screw holes.
Claim 4
Dependent Claim
42 words
A slot forming cutter as defined in claim 1 in which the trailing ends of the ribs of said inserts form cutting faces identically located in the same positions as said first cutting faces when the inserts are turned end for end.
Claim 5
Dependent Claim
58 words
A slot forming cutter as defined in claim 1 in which an identically formed and located set of parallel ribs is formed on the other side of each of said inserts so that by inverting the insert and turning the same end for end, four scalloped cutting edges and sets of cutting faces are presented in cutting position.
Claim 6
Dependent Claim
100 words
A slot forming cutter defined in claim 1 in which each of said face milling cutting edges comprises a flat rectangular insert lying against one side of said disk and having a central hole with a screw extending therethrough and threading into a hole in said disk, angularly related abutments outstanding from and normal to said disk side and defining a corner for locating said face milling insert in cutting position, the axis of said disk hole being inclined relative to said insert hole so as to crowd said face milling insert into said corner as the screw is tightened.
Claim 7
Dependent Claim
143 words
A cutting tool for forming a slot in a workpiece and comprising, in combination, a body in the form of a rotary disk having a plurality of angularly spaced sets of angularly spaced platforms around its periphery, an insert for cutting the bottom of the slot supported on at least one platform of each set, each of said inserts having at least one side formed with a plurality of parallel ribs and intervening grooves extending generally tangentially of said disk and providing at their leading ends a cutting face and a scalloped cutting edge for removing laterally spaced chips from the bottom of the slot, and a pair of side cutters supported by at least two platforms of each set and providing cutting edges spaced angularly from the insert of the set and positioned to face mill the side walls of the slot.
Claim 8
Dependent Claim
143 words
A cutting tool for forming a slot in a workpiece and comprising, in combination, a body in the form of a rotary disk having a plurality of angularly spaced sets of angularly spaced platforms around its periphery, an insert for cutting the bottom of the slot supported on at least one platform of each set, each of said inserts having at least one side formed with a plurality of parallel ribs and intervening grooves extending generally tangentially of said disk and providing at their leading ends a cutting face and a scalloped cutting edge for removing laterally spaced chips from the bottom of the slot, and a pair of side cutters supported by at least two platforms of each set and providing cutting edges spaced angularly from the insert of the set and positioned to face mill the side walls of the slot.
Claim 9
Dependent Claim
62 words
A cutting tool as defined in claim 6 in which a plurality of angularly spaced inserts are supported on the platforms of each set, adjacent inserts on the platforms of each set being supported in different physical positions along the axis of said disk thereby to axially stagger the ribs of each insert relative to the ribs of the immediately succeeding insert.
Claim 10
Dependent Claim
87 words
A cutting tool as defined in claim 7 including a threaded hole formed in each of the insert-supporting platforms, a centrally located hole formed in each of said inserts, a screw extending through the hole in each insert and threaded into the hole of the respective platform to anchor the insert to the platform, and the holes in adjacent platforms being spaced from one another along said axis to locate adjacent inserts in different physical positions along the axis and thereby effect axial staggering of said ribs.
Claim 11
Dependent Claim
115 words
A cutting tool as defined in claim 8 in which said inserts are rectangular, said disk further including a radially disposed backing abutment at the trailing end of each insert-supporting platform, a second abutment at one side of at least some of said insert supporting platforms and cooperating with the trailing abutment to define a right angular corner, the screw for at least one insert of each set being inclined in a direction to force the insert rearwardly against said trailing abutment in a direction generally Tangentially of said disk, the screw for at least one other insert of each set being inclined in a direction to force such insert generally diagonally into said corner.
Claim 12
Dependent Claim
181 words
A cutting tool as defined in claim 8 in which said inserts are rectangular, a radially disposed backing abutment formed at the trailing end of each of the insert-supporting platforms of each set, the screw for the insert on a first one of said platforms being inclined in a direction to force the insert rearwardly against the abutment of the platform in a direction generally tangentially of said disk, an additional abutment formed at one side of a second one of the insert-supporting platforms of each set and at the opposite side of a third one of the insert-supporting platforms of each set, said additional abutments coacting with said backing abutments to define right angular corners on said second and third platforms with the corners on the second platforms being located near one side of the disk and with the corners on the third platforms being located near the opposite side of the disk, and the screws for the inserts on the the second and third platforms being inclined to force the inserts diagonally into crowding engagement with the respective corners.
Claim 13
Dependent Claim
76 words
A cutting tool as defined in claim 10 in which said insert-supporting platforms are formed on cartridges received within angularly spaced recesses in said disk and formed with said threaded holes and said abutments, means in said recesses positioned identically relative to the plane of rotation of said disk for locating the cartridges in accurate positions in the recesses, and means on the cartridges cooperable with said locating means to hold the cartridges in the recesses.
Claim 14
Dependent Claim
116 words
A cutting tool as defined in claim 8 in which each of said inserts comprises a generally rectangular block of cutting material, the hole of each insert extending through opposite sides thereof and being located centrally with respect to said cutting faces and with respect to opposite parallel side faces disposed perpendicular to said cutting faces, said ribs and grooves being formed across each of the sides of the block and extending transversely of the axis of the hole and generally parallel to said side faces from one of said cutting faces to the other of said cutting faces whereby scalloped cutting edges are formed at all four junctions of said sides and said cutting faces.
Claim 15
Dependent Claim
97 words
A cutting tool as defined in claim 6 in which each of the two platforms supporting the side cutters of each set are located in the same angular position around said disk, at least a portion of the cutting edge of one of said side cutters extending generally radially and being offset laterally in one direction from the cutting edge of said insert and at least a portion of the cutting edge of the other of said side cutters extending generally radially and being offset laterally in the opposite direction from the cutting edge of said insert.
Claim 16
Dependent Claim
29 words
A cutting tool as defined in claim 13 in which the two platforms for each pair of side cutters are formed on a single cartridge fastened to said disk.
Claim 17
Dependent Claim
117 words
In a cutting tool, the combination of, a disk rotatable about an axis and having a plurality of angularly spaced sets of angularly spaced insert supporting platforms around its periphery, generally flat inserts resting on at least certain ones of the platforms of each set, said inserts all being identical and each having a scalloped leading cutting edge defined by alternating ribs and grooves spaced from one another along said axis and extending generally tangentially of said disk, and means supporting adjacent ones of the inserts of each set on said platforms in different physical positions along said axis thereby to axially stagger the ribs of each insert relative to the ribs of the immediately succeeding insert.
Claim 18
Dependent Claim
117 words
In a cutting tool, the combination of, a disk rotatable about an axis and having a plurality of angularly spaced sets of angularly spaced insert supporting platforms around its periphery, generally flat inserts resting on at least certain ones of the platforms of each set, said inserts all being identical and each having a scalloped leading cutting edge defined by alternating ribs and grooves spaced from one another along said axis and extending generally tangentially of said disk, and means supporting adjacent ones of the inserts of each set on said platforms in different physical positions along said axis thereby to axially stagger the ribs of each insert relative to the ribs of the immediately succeeding insert.
Claim 19
Dependent Claim
87 words
A cutting tool as defined in claim 15 including a threaded hole formed in each of the insert-supporting platforms, a centrally located hole formed in each of said inserts, a screw extending through the hole in each insert and threaded into the hole of the respective platform to anchor the insert to the platform, and the holes in adjacent platforms being spaced from one another along said axis to locate adjacent inserts in different physical positions along the axis and thereby effect axial staggering of said ribs.
Claim 20
Dependent Claim
117 words
A cutting tool as defined in claim 16 in which each of said inserts comprises a generally rectangular block of cutting material, the hole of each insert extending through opposite sides thereof and being located centrally with respect to opposite parallel end faces and with respect to opposite parallel side faces disposed perpendicular to said end faces, said ribs and grooves being formed across each of the sides of the block and extending transversely of the axis of the hole and generally parallel to said side faces from one of said end faces to the other of said ends faces whereby scalloped cutting edges are formed along all four junctions of said sides and said end faces.
Claim 21
Dependent Claim
107 words
An indexable cutting insert comprising a generally rectangular block of cutting material having a hole extending through opposite sides thereof, the axis of said hole being disposed generally perpendicular to said sides and substantially paralleling opposite parallel side faces of the block and opposite parallel end faces disposed perpendicular to said side faces, and alternating ribs and grooves formed across each of said sides and extending transversely of said axis and generally parallel to said side faces from one of said end faces to the other of said end faces thereby to define scalloped cutting edges along the four junctions of said end faces with said sides.
Claim 22
Dependent Claim
107 words
An indexable cutting insert comprising a generally rectangular block of cutting material having a hole extending through opposite sides thereof, the axis of said hole being disposed generally perpendicular to said sides and substantially paralleling opposite parallel side faces of the block and opposite parallel end faces disposed perpendicular to said side faces, and alternating ribs and grooves formed across each of said sides and extending transversely of said axis and generally parallel to said side faces from one of said end faces to the other of said end faces thereby to define scalloped cutting edges along the four junctions of said end faces with said sides.
Claim 23
Dependent Claim
35 words
An indexable cutting insert as defined in claim 18 in which the crests of each opposing pair of ribs on opposite sides of said block are disposed in a plane extending perpendicular to said sides.
Claim 24
Dependent Claim
181 words
A cutting tool for removing metal from a workpiece and comprising, in combination, a rotary body having a plurality of angularly spaced sets of angularly spaced platforms around its periphery, a scalloped insert supported on one platform of each set, each of said scalloped inserts comprising a generally rectangular block of cutting material having a pair of comparatively wide opposite sides and having two parallel end faces narrower than and extending generally perpendicular to said sides, a plurality of alternating ribs and intervening grooves formed across each of said sides from one of said end faces to the other of said end faces thereby to provide scalloped cutting edges along the four junctions of said end faces with said sides, each of said cutting edges, when in active cutting position, being operable to remove laterally spaced chips from said workpiece, and an additional insert supported on another platform of each set and having a cutting edge extending in the same general direction as said scalloped cutting edge for removing material left on said workpiece between the ribs of the scalloped insert.
Claim 25
Dependent Claim
181 words
A cutting tool for removing metal from a workpiece and comprising, in combination, a rotary body having a plurality of angularly spaced sets of angularly spaced platforms around its periphery, a scalloped insert supported on one platform of each set, each of said scalloped inserts comprising a generally rectangular block of cutting material having a pair of comparatively wide opposite sides and having two parallel end faces narrower than and extending generally perpendicular to said sides, a plurality of alternating ribs and intervening grooves formed across each of said sides from one of said end faces to the other of said end faces thereby to provide scalloped cutting edges along the four junctions of said end faces with said sides, each of said cutting edges, when in active cutting position, being operable to remove laterally spaced chips from said workpiece, and an additional insert supported on another platform of each set and having a cutting edge extending in the same general direction as said scalloped cutting edge for removing material left on said workpiece between the ribs of the scalloped insert.
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |