US2575239A - Reversible bit and holder therefor - Google Patents
Reversible bit and holder therefor Download PDFInfo
- Publication number
- US2575239A US2575239A US167729A US16772950A US2575239A US 2575239 A US2575239 A US 2575239A US 167729 A US167729 A US 167729A US 16772950 A US16772950 A US 16772950A US 2575239 A US2575239 A US 2575239A
- Authority
- US
- United States
- Prior art keywords
- bit
- slot
- holder
- holder therefor
- heads
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/0002—Drills with connected cutting heads, e.g. with non-exchangeable cutting heads; Drills with a single insert extending across the rotational axis and having at least two radially extending cutting edges in the working position
- B23B51/0003—Drills with connected cutting heads, e.g. with non-exchangeable cutting heads; Drills with a single insert extending across the rotational axis and having at least two radially extending cutting edges in the working position with exchangeable heads or inserts
- B23B51/00035—Spade drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/06—Drills with lubricating or cooling equipment
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/003—Drill bits with cutting edges facing in opposite axial directions
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/62—Drill bits characterised by parts, e.g. cutting elements, which are detachable or adjustable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2251/00—Details of tools for drilling machines
- B23B2251/50—Drilling tools comprising cutting inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2265/00—Details of general geometric configurations
- B23B2265/32—Polygonal
- B23B2265/326—Hexagonal
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/89—Tool or Tool with support
- Y10T408/907—Tool or Tool with support including detailed shank
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/89—Tool or Tool with support
- Y10T408/909—Having peripherally spaced cutting edges
- Y10T408/9098—Having peripherally spaced cutting edges with means to retain Tool to support
- Y10T408/90993—Screw driven means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Drilling And Exploitation, And Mining Machines And Methods (AREA)
Description
NOV. 13, 195] J, STEPHENS 2,575,239
REVERSIBLE BIT AND HOLDER THEREFOR Filed June 15, 1950 IN VEN TOR:
fobe ri fie hens Patented Nov. 13,
REVERSIBLE BIT AND HOLDER THEREFOR ,Robert J. Stephens, Montgomery, W. Va., assignor to Marathon Coal Bit Company, Inc., Mont-' gomcry, W. Va., a corporation of West Virginia Application June 13,1950,1Serial No. 167,729
. 1 This invention relates to certain new and useful improvements in reversible bits and holders therefor and has for its principalobject the provision of an improved construction-of this character which will e highly efficient in use and economical in manufacture.
An object of my inventionis to provide a reversible bit and holder therefor of the character hereinafter more fully set forth, especially useful for drilling any hard formation including all formations of earth strata or any synthetic product. The bit and holder therefor are especially designed for use by the coal mining industry for drilling blast holes, steel pin timbering holes, hanger holes, and the like.
A further and equally important object of the invention is to provide a reversible bit having opposed cutting heads with two reaming sides common to both heads whereby the cutting heads and the reaming sides may be sharpened whenever found desirable and necessary.
Another object of the invention is to provide a bit holder in which there is an arrangement for permitting the passage therethrough of air or water to facilitate and expeditethe drilling operation and to expel from the drilled hole the dust or like matter, brought about through the drilling operation.
Another object of the invention is to provide an attachment between the bit and the holder therefor whereby as the cutting head is reduced in size by reason of having been sharpened, the bit may be adjusted outwardly in a longitudinal direction from the holder.
Other objects will appear hereinafter.
The invention consists in the novel combination and arrangement of parts to be hereinafter described and claimed.
The invention will be best understood by reference to the accompanying drawings showing the preferred form of construction, and in which:
Fig. 1 is a side elevational view showing the bit holder and bit embodying my invention;
Fig. 2 is an edge view of the same;
Fig. 3 is a perspective view of the bit embodying my invention;
Fig. 4 is an end view of the same;
Fig. 5 is a sectional detail view taken substan-v tially on line 55 of Fig. 2; and
Fig. 6 is a sectional detail view taken substantially on line 6-6 of Fig. 2.
As hereinbefore stated, my improved bit and holder therefor is especially designed for use in the coal mining industry; however, the same may be used for drilling purposes other than in such industry.
1 Claim. "(01. 255-61) (not shown).
To accomplish the several objects of my iii-- vention, I provide a holder H formed as an integral part of a shank l0. This shank Ill is adapted to be mounted in a suitable driving chuck The head provides a transversely extending slot |,'the base of which is triangular. in plan view as at l2, with the apex [3 thereof intersecting a longitudinal passage l4 formed in the shank l0, and having communicating there- The bit embodying my invention is indicated at 9, and this bit provides oppositely disposed cutting heads 2|! and 2| and reamer side edges 22 common to both heads. The cutting heads are triangular in plan view to conform to the shape of the triangular section of the slot ll. These heads 26 and 2| provide cutting edges 23.
Formed in the bit l9 in parallel relation with respect to the reaming side edges 22 is an elongated slot 24 through which projects the threaded shank of the clamping bolt I.
In use, the bit is positioned in the slot ll between the fingers "5, with one of the cutting heads such as 2| (Fig. 5) positioned in the triangular shaped base of the slot II, the walls of which base cooperate with the adjacent edges of the head 2| to prevent movement of the cutting bit about the clamping screw l8. After the bit has been positioned in the slot H in the manner shown in Fig. 5, the clamping screw is adjusted to bear the fingers l6 into clamping engagement upon the adjacent side walls of the bit, thereby to rigidly clamp the bit within the slot The elongated slot 24 permits the bit l9 to be moved outwardly whenever its projecting cutting head is reduced in size by sharpening operation. As the cutting heads 20 and 2| are of similar construction, it is clearly manifest that the bit may be reversed to interchange the heads in cutting position.
The reaming side edges 22 result in the production of a hole which is'substantially uniform in diameter and eliminate what is known in the art as rifling action.
By providing the passage l4 and the branch passages l5, water may be forced into the hole during the drilling operation, thereby greatly facilitating such operation. On the other hand, air may be forced through these passages to remove the accumulated dust from the hole.
From the foregoing description, it will be of its adjustability, having substantially great longevity as compared with bits which are now in commercial use.
1 While Lhave illustrated and described, the pre:
ferred form of? construction for carrying my' invention into efiect, this is capable of variation 4 of which cutting heads being lnsertable in the said slot and each being triangular in plan view to conform to the shape of the base of said slot, and means for detachably connecting the bit in an adjusted position within said slot with one of the heads thereof projecting into the base of saidasldt saiddconnecting means, comprising a clamping screw threadediinto said. holder and projecting through an elongated slot formed in a d fic Without departing from the 10 the bit, said slot eirtending in a direction longispirit of the invention. 1, therefore, do not wish to be limited to the precise detailsliof"construction;
set forth, but desire to avail myself of such,variations and modifications as comewithinlthescope of the appended claim.
Having thus described my invention, what I claim as new and desire to protect; by Letters-= Patent is:
A tool of the class described comprising a shank, a holder integral -withthe shank at one end; thereof, and providing opposite its integral connection with ,theshanKa-transversely extend ing slot" opening atthe opposite side edge portions ofthe holder and at the end thereof; in a' longitudinal direction with: respect tothe; longaxis of." the shank, thetbaseoof-said slot being substantially triangular in cross section throughout the entire width of theholder, a bit having oppositely disposed aligned cutting heads: either tudinally with respect to the long axis of the shame-whereby:saidibit may be adjusted longitudinally, with respectto said shank.
' ROBERT J. STEPHENS.
law
REFERENCES CITED Tlie following references are of record in the 'filfinfiiithis patent:
UNITED STATES PATENTS
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US167729A US2575239A (en) | 1950-06-13 | 1950-06-13 | Reversible bit and holder therefor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US167729A US2575239A (en) | 1950-06-13 | 1950-06-13 | Reversible bit and holder therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
US2575239A true US2575239A (en) | 1951-11-13 |
Family
ID=22608569
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US167729A Expired - Lifetime US2575239A (en) | 1950-06-13 | 1950-06-13 | Reversible bit and holder therefor |
Country Status (1)
Country | Link |
---|---|
US (1) | US2575239A (en) |
Cited By (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2879036A (en) * | 1956-06-25 | 1959-03-24 | Philip T Wheeler | Masonry drill |
US2893695A (en) * | 1957-05-13 | 1959-07-07 | Norbert J Gerlikowski | Apparatus for drilling holes in ice |
US3271080A (en) * | 1964-02-06 | 1966-09-06 | Gen Electric | Cutter bit assembly for mining machines |
US3415332A (en) * | 1967-03-08 | 1968-12-10 | Gen Electric | Drill bit |
US3434552A (en) * | 1967-03-08 | 1969-03-25 | Gen Electric | Self-centering cutter bit for drills |
US3434553A (en) * | 1967-03-08 | 1969-03-25 | Gen Electric | Drill cutter bit |
US3434554A (en) * | 1967-03-08 | 1969-03-25 | Gen Electric | Cutter bit for drills |
US3522852A (en) * | 1967-08-18 | 1970-08-04 | Trident Ind Inc | Expandable drill bit and reamer construction |
US3710879A (en) * | 1970-07-24 | 1973-01-16 | D Dewar | Drilling apparatus |
US3765496A (en) * | 1971-12-27 | 1973-10-16 | M Flores | Drill head unit with throwaway insert holders |
DE2216760A1 (en) * | 1972-04-07 | 1973-10-18 | Hawera Probst Kg Hartmetall | ROCK DRILLS |
US4047826A (en) * | 1976-05-17 | 1977-09-13 | Bennett John T | Drill having indexable replaceable insert tip |
US4060335A (en) * | 1975-07-14 | 1977-11-29 | Amtel, Inc. | Spade drill |
US4079796A (en) * | 1976-03-22 | 1978-03-21 | Arnol Staggs | Cutting machine and augering tool |
US4092083A (en) * | 1977-02-15 | 1978-05-30 | Star Cutter Company | Gun drill |
EP0107651A1 (en) * | 1982-04-16 | 1984-05-09 | Ford Motor Co | Drill bit for fiber reinforced plastics. |
US4488840A (en) * | 1982-07-08 | 1984-12-18 | Pollington Bernard M | Rotary cutting tool |
US4603751A (en) * | 1984-02-16 | 1986-08-05 | Kennametal Inc. | Mechanically fastened center vacuum roof drill bit |
US4642001A (en) * | 1983-10-31 | 1987-02-10 | Gill Geoffrey Y | Spade drill with replaceable cutting-insert carrier |
FR2627541A2 (en) * | 1986-11-04 | 1989-08-25 | Vennin Henri | Single piece rock drill bit - has central rotary tool head including radial slots or grooves to receive cutting blade inserts with multiple diamond teeth |
US5259707A (en) * | 1992-08-17 | 1993-11-09 | Keller Dale L | Spot drill with indexable replaceable insert |
US5782589A (en) * | 1996-06-17 | 1998-07-21 | Cole; John M. | Milling cutter |
WO1999004128A3 (en) * | 1997-07-15 | 1999-04-08 | Kennametal Inc | Rotatable cutting bit assembly with cutting inserts |
US5904448A (en) * | 1996-08-21 | 1999-05-18 | Korea Tungsten Co., Ltd. | Finishing throwaway ball endmill |
US5996714A (en) * | 1997-07-15 | 1999-12-07 | Kennametal Inc. | Rotatable cutting bit assembly with wedge-lock retention assembly |
US6044920A (en) * | 1997-07-15 | 2000-04-04 | Kennametal Inc. | Rotatable cutting bit assembly with cutting inserts |
US6158927A (en) * | 1996-06-17 | 2000-12-12 | Cole Carbide Industries, Inc. | Milling cutter |
US6176332B1 (en) | 1998-12-31 | 2001-01-23 | Kennametal Inc. | Rotatable cutting bit assembly with cutting inserts |
US6220795B1 (en) | 1999-04-05 | 2001-04-24 | Vermont Indexable Tooling, Inc. | Spotting drill and milling cutter |
US6224302B1 (en) | 1999-02-10 | 2001-05-01 | Cole Carbide Industries, Inc. | Spade drill |
US20060133901A1 (en) * | 2004-12-20 | 2006-06-22 | Gleason Cutting Tools Corporation | Cutting tool for gears and other toothed articles |
US20060263153A1 (en) * | 2005-05-02 | 2006-11-23 | Sandvik Intellectual Property Ab | Thread cutting insert |
US20090208300A1 (en) * | 2008-02-19 | 2009-08-20 | Irwin Industrial Tool Company | Self feed bit |
US20100003094A1 (en) * | 2007-01-09 | 2010-01-07 | Irwin Industrial Tool Company | Drill bit |
US20110020074A1 (en) * | 2007-01-18 | 2011-01-27 | Kennametal Inc. | Cutting inserts |
US20110020073A1 (en) * | 2007-01-18 | 2011-01-27 | Kennametal Inc. | Cutting insert assembly and components thereof |
US8727673B2 (en) | 2007-01-18 | 2014-05-20 | Kennametal Inc. | Cutting insert with internal coolant delivery and surface feature for enhanced coolant flow |
US8827599B2 (en) | 2010-09-02 | 2014-09-09 | Kennametal Inc. | Cutting insert assembly and components thereof |
US20160263686A1 (en) * | 2013-09-25 | 2016-09-15 | Yih Troun Enterprise Co., Ltd. | Screw tap with replaceable tool bit |
US11185935B2 (en) * | 2018-08-03 | 2021-11-30 | Allied Machine & Engineering Corp. | Machining system and cutting insert and methods |
US11440101B2 (en) * | 2018-04-30 | 2022-09-13 | Hartmetall-Werkzeugfabrik Paul Horn Gmbh | Tool for machining a workpiece |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US124089A (en) * | 1872-02-27 | Improvement in bits | ||
US658060A (en) * | 1900-07-21 | 1900-09-18 | William Archer Dudley | Rock-drill head. |
US750182A (en) * | 1904-01-19 | of philadelphia | ||
US866594A (en) * | 1906-10-29 | 1907-09-17 | George Salzer | Screw-driver. |
US994668A (en) * | 1908-09-14 | 1911-06-06 | Wallace Childs | Bit for rock-drills, moils, and picks. |
US1652129A (en) * | 1927-03-30 | 1927-12-06 | John H Harris | Chuck for holding bits |
US1879222A (en) * | 1930-07-22 | 1932-09-27 | Reed Roller Bit Co | Drill |
-
1950
- 1950-06-13 US US167729A patent/US2575239A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US124089A (en) * | 1872-02-27 | Improvement in bits | ||
US750182A (en) * | 1904-01-19 | of philadelphia | ||
US658060A (en) * | 1900-07-21 | 1900-09-18 | William Archer Dudley | Rock-drill head. |
US866594A (en) * | 1906-10-29 | 1907-09-17 | George Salzer | Screw-driver. |
US994668A (en) * | 1908-09-14 | 1911-06-06 | Wallace Childs | Bit for rock-drills, moils, and picks. |
US1652129A (en) * | 1927-03-30 | 1927-12-06 | John H Harris | Chuck for holding bits |
US1879222A (en) * | 1930-07-22 | 1932-09-27 | Reed Roller Bit Co | Drill |
Cited By (51)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2879036A (en) * | 1956-06-25 | 1959-03-24 | Philip T Wheeler | Masonry drill |
US2893695A (en) * | 1957-05-13 | 1959-07-07 | Norbert J Gerlikowski | Apparatus for drilling holes in ice |
US3271080A (en) * | 1964-02-06 | 1966-09-06 | Gen Electric | Cutter bit assembly for mining machines |
US3434554A (en) * | 1967-03-08 | 1969-03-25 | Gen Electric | Cutter bit for drills |
US3434552A (en) * | 1967-03-08 | 1969-03-25 | Gen Electric | Self-centering cutter bit for drills |
US3434553A (en) * | 1967-03-08 | 1969-03-25 | Gen Electric | Drill cutter bit |
US3415332A (en) * | 1967-03-08 | 1968-12-10 | Gen Electric | Drill bit |
US3522852A (en) * | 1967-08-18 | 1970-08-04 | Trident Ind Inc | Expandable drill bit and reamer construction |
US3710879A (en) * | 1970-07-24 | 1973-01-16 | D Dewar | Drilling apparatus |
US3765496A (en) * | 1971-12-27 | 1973-10-16 | M Flores | Drill head unit with throwaway insert holders |
DE2216760A1 (en) * | 1972-04-07 | 1973-10-18 | Hawera Probst Kg Hartmetall | ROCK DRILLS |
US3878905A (en) * | 1972-04-07 | 1975-04-22 | Hawera Probst Kg Hartmetall | Drill, especially rock drill |
US4060335A (en) * | 1975-07-14 | 1977-11-29 | Amtel, Inc. | Spade drill |
US4079796A (en) * | 1976-03-22 | 1978-03-21 | Arnol Staggs | Cutting machine and augering tool |
US4047826A (en) * | 1976-05-17 | 1977-09-13 | Bennett John T | Drill having indexable replaceable insert tip |
US4092083A (en) * | 1977-02-15 | 1978-05-30 | Star Cutter Company | Gun drill |
EP0107651A1 (en) * | 1982-04-16 | 1984-05-09 | Ford Motor Co | Drill bit for fiber reinforced plastics. |
US4488840A (en) * | 1982-07-08 | 1984-12-18 | Pollington Bernard M | Rotary cutting tool |
US4642001A (en) * | 1983-10-31 | 1987-02-10 | Gill Geoffrey Y | Spade drill with replaceable cutting-insert carrier |
US4603751A (en) * | 1984-02-16 | 1986-08-05 | Kennametal Inc. | Mechanically fastened center vacuum roof drill bit |
FR2627541A2 (en) * | 1986-11-04 | 1989-08-25 | Vennin Henri | Single piece rock drill bit - has central rotary tool head including radial slots or grooves to receive cutting blade inserts with multiple diamond teeth |
US5259707A (en) * | 1992-08-17 | 1993-11-09 | Keller Dale L | Spot drill with indexable replaceable insert |
US5782589A (en) * | 1996-06-17 | 1998-07-21 | Cole; John M. | Milling cutter |
US6158927A (en) * | 1996-06-17 | 2000-12-12 | Cole Carbide Industries, Inc. | Milling cutter |
US5904448A (en) * | 1996-08-21 | 1999-05-18 | Korea Tungsten Co., Ltd. | Finishing throwaway ball endmill |
WO1999004128A3 (en) * | 1997-07-15 | 1999-04-08 | Kennametal Inc | Rotatable cutting bit assembly with cutting inserts |
US6260638B1 (en) | 1997-07-15 | 2001-07-17 | Kennametal Pc Inc. | Rotatable cutting bit assembly with wedge-lock retention assembly |
US6109377A (en) * | 1997-07-15 | 2000-08-29 | Kennametal Inc. | Rotatable cutting bit assembly with cutting inserts |
US5996714A (en) * | 1997-07-15 | 1999-12-07 | Kennametal Inc. | Rotatable cutting bit assembly with wedge-lock retention assembly |
US6044920A (en) * | 1997-07-15 | 2000-04-04 | Kennametal Inc. | Rotatable cutting bit assembly with cutting inserts |
EP1170460A3 (en) * | 1997-07-15 | 2003-01-29 | Kennametal Inc. | Rotatable cutting bit with cutting inserts |
EP1170460A2 (en) * | 1997-07-15 | 2002-01-09 | Kennametal Inc. | Rotatable cutting bit with cutting inserts |
US6176332B1 (en) | 1998-12-31 | 2001-01-23 | Kennametal Inc. | Rotatable cutting bit assembly with cutting inserts |
US6224302B1 (en) | 1999-02-10 | 2001-05-01 | Cole Carbide Industries, Inc. | Spade drill |
US6220795B1 (en) | 1999-04-05 | 2001-04-24 | Vermont Indexable Tooling, Inc. | Spotting drill and milling cutter |
US20060133901A1 (en) * | 2004-12-20 | 2006-06-22 | Gleason Cutting Tools Corporation | Cutting tool for gears and other toothed articles |
US7520698B2 (en) * | 2004-12-20 | 2009-04-21 | Gleason Cutting Tools Corporation | Cutting tool for gears and other toothed articles |
US20060263153A1 (en) * | 2005-05-02 | 2006-11-23 | Sandvik Intellectual Property Ab | Thread cutting insert |
US7611310B2 (en) * | 2005-05-02 | 2009-11-03 | Sandvik Intellectual Property Ab | Thread cutting insert |
US20100003094A1 (en) * | 2007-01-09 | 2010-01-07 | Irwin Industrial Tool Company | Drill bit |
US8454274B2 (en) * | 2007-01-18 | 2013-06-04 | Kennametal Inc. | Cutting inserts |
US20110020074A1 (en) * | 2007-01-18 | 2011-01-27 | Kennametal Inc. | Cutting inserts |
US20110020073A1 (en) * | 2007-01-18 | 2011-01-27 | Kennametal Inc. | Cutting insert assembly and components thereof |
US8727673B2 (en) | 2007-01-18 | 2014-05-20 | Kennametal Inc. | Cutting insert with internal coolant delivery and surface feature for enhanced coolant flow |
US9101985B2 (en) * | 2007-01-18 | 2015-08-11 | Kennametal Inc. | Cutting insert assembly and components thereof |
US8070397B2 (en) | 2008-02-19 | 2011-12-06 | Irwin Industrial Tool Company | Self feed bit |
US20090208300A1 (en) * | 2008-02-19 | 2009-08-20 | Irwin Industrial Tool Company | Self feed bit |
US8827599B2 (en) | 2010-09-02 | 2014-09-09 | Kennametal Inc. | Cutting insert assembly and components thereof |
US20160263686A1 (en) * | 2013-09-25 | 2016-09-15 | Yih Troun Enterprise Co., Ltd. | Screw tap with replaceable tool bit |
US11440101B2 (en) * | 2018-04-30 | 2022-09-13 | Hartmetall-Werkzeugfabrik Paul Horn Gmbh | Tool for machining a workpiece |
US11185935B2 (en) * | 2018-08-03 | 2021-11-30 | Allied Machine & Engineering Corp. | Machining system and cutting insert and methods |
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