US20080253846A1 - End mill for orbital drilling of fiber reinforced plastic materials - Google Patents
End mill for orbital drilling of fiber reinforced plastic materials Download PDFInfo
- Publication number
- US20080253846A1 US20080253846A1 US11/786,562 US78656207A US2008253846A1 US 20080253846 A1 US20080253846 A1 US 20080253846A1 US 78656207 A US78656207 A US 78656207A US 2008253846 A1 US2008253846 A1 US 2008253846A1
- Authority
- US
- United States
- Prior art keywords
- degrees
- end mill
- angle
- rake angle
- cutting
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/04—Angles
- B23C2210/0407—Cutting angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/04—Angles
- B23C2210/0485—Helix angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2220/00—Details of milling processes
- B23C2220/52—Orbital drilling, i.e. use of a milling cutter moved in a spiral path to produce a hole
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23C2222/28—Details of hard metal, i.e. cemented carbide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/27—Composites, e.g. fibre reinforced composites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/31—Diamond
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2226/00—Materials of tools or workpieces not comprising a metal
- B23C2226/31—Diamond
- B23C2226/315—Diamond polycrystalline [PCD]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2228/00—Properties of materials of tools or workpieces, materials of tools or workpieces applied in a specific manner
- B23C2228/10—Coating
-
- 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
- Y10T407/00—Cutters, for shaping
- Y10T407/19—Rotary cutting tool
- Y10T407/1906—Rotary cutting tool including holder [i.e., head] having seat for inserted tool
- Y10T407/1908—Face or end mill
-
- 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
- Y10T407/00—Cutters, for shaping
- Y10T407/19—Rotary cutting tool
- Y10T407/1946—Face or end mill
-
- 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
- Y10T407/00—Cutters, for shaping
- Y10T407/19—Rotary cutting tool
- Y10T407/1946—Face or end mill
- Y10T407/1948—Face or end mill with cutting edge entirely across end of tool [e.g., router bit, end mill, etc.]
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
- Drilling Tools (AREA)
Abstract
A center or non-center cutting end mill for orbital drilling of fiber reinforced plastic (FRP) materials includes a shank, a neck, a cutting head and two or more flutes. The end mill has a tool geometry with the following features: a dish angle between about 2 degrees to about 6 degrees; a helix angle between about 5 degrees to about 18 degrees; an end teeth radial rake angle between about 0 degrees and about 15 degrees; a peripheral teeth radial rake angle between about 8 degrees and about 16 degrees; a gashing axial rake angle between about 3 degrees to about 10 degrees; and a primary clearance angle between about 10 degrees to about 18 degrees. The end mill is made from a tungsten carbide substrate with cemented cobalt in a range between about 3 to 10 wt. % and a diamond coating having a thickness in a range between about 8 to 20 μm.
Description
- Fiber reinforced plastic (FRP) materials are widely used in aerospace industry due to its high specific strength and high specific stiffness. FRP materials are composite materials consisting of soft resin matrix and high strength fiber reinforcement. Typical fiber reinforcements include carbon fibers (CFRP), glass fibers (GFRP), Kevlar fibers, and the like. FRP materials are often processed into a laminated structure. FRP materials have excellent in-plane strength, but low inter-laminar strength. Fibers tend to delaminate during machining.
FIG. 10 shows the fiber delamination around a machined hole using a conventional end mill. - One approach to reduce the fiber delamination is to use an orbital drilling process. Orbital drilling is a holemaking operation by milling in which the center of an end mill orbits about the center of the intended hole while spinning on its own axis and moving in the axial direction. Orbital drilling is also called as circular milling or helical interpolation.
- Thus, there is a need to provide a cutting tool that minimizes fiber delamination when machining fiber reinforced plastic materials.
- Briefly, according to this invention, there is provided an end mill for orbital drilling of fiber reinforced plastics comprising a shank having a shank diameter; a neck having a neck diameter; and a cutting head having a cutting diameter, a corner radius, a dish angle and a back radius, wherein the neck diameter is about 65 percent to about 90 percent of the cutting diameter, the dish angle is between about 2 degrees to about 6 degrees, and the corner radius is between about 3 percent to about 8 percent of the cutting diameter.
- In another embodiment, an end mill for orbital drilling of fiber reinforced plastics has a dish angle between about 2 degrees and about 6 degrees; a helix angle of between about 5 degrees and about 18 degrees; a radial rake angle between about 5 degrees and about 15 degrees; a gashing axial rake angle between about 3 degrees and about 10 degrees; and a primary clearance angle between about 10 degrees and about 18 degrees.
- Further features of the present invention, as well as the advantages derived therefrom, will become clear from the following detailed description made with reference to the drawings in which:
-
FIG. 1 is a side view of the geometry of an end mill for machining fiber reinforced plastics according to an embodiment of the invention; -
FIG. 2 is an enlarged side view of the cutting head of the end mill ofFIG. 1 ; -
FIG. 3 is an end view of a 4-fluted, non-center cutting end mill for machining fiber reinforced plastics according to an embodiment of the invention; -
FIG. 4 is a partial side view of the 4-fluted, non-center cutting end mill ofFIG. 3 ; -
FIG. 5 is a photograph of the hole quality produced by the 4-fluted, non-center cutting end mill ofFIG. 3 ; -
FIG. 6 is an end view of a 2-fluted, center cutting end mill for machining fiber reinforced plastics according to an embodiment of the invention; -
FIG. 7A is a partial side view of the 2-fluted, center cutting end mill ofFIG. 6 ; -
FIG. 7B is a partial cross-sectional end view of the 2-fluted, center cutting end mill taken alongline 7B-7B ofFIG. 7A ; -
FIG. 8 is a photograph of the hole quality produced by the 2-fluted, center cutting end mill ofFIG. 6 ; -
FIG. 9 is an end view of a 4-fluted, center end mill for machining fiber reinforced plastics according to an embodiment of the invention; and -
FIG. 10 shows the fiber delamination around a machined hole using a conventional end mill. - Tool Geometry
- Referring to
FIGS. 1 and 2 , wherein like reference characters represent like elements, an end mill for orbital drilling of fiber reinforced plastics is generally shown at 10. In general, theend mill 10 includes has ashank 12, aneck 14, acutting head 16, and alongitudinal axis 18. In one embodiment, theshank 12 has ashank diameter 20 of approximately 0.40 inches (10.16 mm), theneck 14 has aneck diameter 22 of approximately 0.22 inches (5.59 mm), and thecutting head 16 has acutting diameter 24 of approximately 0.28 inches (7.11 mm). In general, theneck diameter 22 is less than thecutting diameter 24, for example, theneck diameter 22 can be approximately 65 to 90 percent of thecutting diameter 24. - As best seen in
FIG. 2 , thecutting head 16 includes aforward cutting end 26 that includes adish angle 28 with respect to the end face. In one embodiment, thedish angle 28 can range from about 2 degrees to about 6 degrees. Thecutting head 16 also includes acorner radius 30 that is about 3 to about 8 percent of thecutting diameter 24. Thecorner radius 30 depends on thecutting diameter 24. For example, in one embodiment, thecorner radius 30 is about 0.02 inches (0.51 mm) for acutting diameter 24 of approximately 0.28 inches (7.11 mm). Thecutting head 16 also includes a flat 32 that extends from thecorner radius 30 to aback radius 34, which causes reduction in diameter from thecutting head 16 to theneck 14. In one embodiment, theback radius 34 is about 0.16 inches (4.06 mm) for a cutting diameter of approximately 0.28 inches (7.11 mm) and aneck diameter 22 of approximately 0.22 inches (5.59 mm). - Tool Configurations
- In general, the end mill has a dish angle between about 2 degrees to about 6 degrees, a helix angle between about 5 degrees to about 18 degrees, an end teeth radial rake angle between about 0 degrees to about 15 degrees, a peripheral teeth radial rake angle between about 8 degrees to about 16 degrees; a gashing axial rake angle between about 3 degrees to about 10 degrees, and a primary clearance angle between about 10 degrees to about 18 degrees.
- The principles of the tool geometry described above can be applied to various cutting tool configurations. To this end, a number of different tool configurations of the
end mill 10 were tested and compared using the principles of the tool geometry described above. - In one example shown in
FIGS. 3 and 4 , the principles of the tool geometry were applied to a non-centercutting end mill 100 that includes four flutes, 36, 38, 40, 42, at ahelix angle 44 that is about 10 degrees with respect to thelongitudinal axis 18. In addition, theend mill 10 includes, but is not limited to, adish angle 28 of about 4 degrees, an end teethradial rake angle 46 of about 10 degrees, a peripheral teethradial rake angle 47 of about 10 degrees, a gashingaxial rake angle 48 of about 5 degrees, and aprimary clearance angle 50 of about 12 degrees. It is noted that the end teethradial rake angle 46 is approximately equal to the peripheral teethradial rake angle 47. - As shown in
FIG. 5 , excellent hole quality is achieved using the end mill and no fiber delamination was observed. - In another example shown in
FIGS. 6 , 7A and 7B, the principles of the tool geometry were applied to a 2-flute center cuttingend mill 200 that include two flutes at ahelix angle 44 of about 10 degrees, a dish angle of about 4 degrees, an end teethradial rake angle 46 of about 0 degrees, a peripheral teethradial rake angle 47 of about 10 degrees, a gashingaxial rake angle 48 of about 5 degrees, and a primary clearance angle of about 12 degrees. It is noted that the end teethradial rake angle 46 is less than or equal to the peripheral teethradial rake angle 47 due to gashing. - As shown in
FIG. 8 , excellent hole quality is achieved using the end mill and no fiber delamination was observed - In yet another example, the same tool geometry for the 2-flute center cutting end mill was applied to a 4-flute center-cutting end mill 300 shown in
FIG. 9 . Test results indicate that the end mill produced excellent hole quality and no fiber delamination was observed. - Diamond Coating
- The fiber reinforcement used in FRP materials is very abrasive and can cause very short life in an uncoated carbide tool. To improve tool life, a diamond coating of about 12 μm thick is applied to the above mentioned end mills. In one embodiment, the
end mill 10 is made from a tungsten carbide (WC) substrate with cemented cobalt (Co) in a range between about 3 to 10 wt. % and a diamond coating having a thickness in a range between about 8 to 20 μm deposited by using a chemical vapor deposition (CVD) process. Testing shows that tool life can be increased by 20 times using the diamond coating. Theend mill 10 can also be made of a polycrystalline diamond (PCD) material. - It will be appreciated that the principles of the tool geometry can be applied to both non-center cutting and center cutting end mills for orbital drilling of FRP materials.
- The documents, patents and patent applications referred to herein are hereby incorporated by reference.
- While the invention has been specifically described in connection with certain specific embodiments thereof, it is to be understood that this is by way of illustration and not of limitation, and the scope of the appended claims should be construed as broadly as the prior art will permit.
Claims (12)
1. An end mill for orbital drilling of fiber reinforced plastics comprising a shank having a shank diameter; a neck having a neck diameter; and a cutting head having a cutting diameter, a corner radius, a dish angle and a back radius, wherein the neck diameter is about 65 percent to about 90 percent of the cutting diameter, the dish angle is between about 2 degrees to about 6 degrees, and the corner radius is between about 3 percent to about 8 percent of the cutting diameter.
2. The end mill according to claim 1 , further comprising a plurality of flutes at a helix angle of between about 5 degrees and about 18 degrees.
3. The end mill according to claim 1 , further comprising an end teeth radial rake angle between about 0 degrees and about 15 degrees, and a peripheral teeth radial rake angle between about 8 degrees and about 16 degrees.
4. The end mill according to claim 1 , further comprising a gashing axial rake angle between about 3 degrees and about 10 degrees.
5. The end mill according to claim 1 , further comprising a primary clearance angle between about 10 degrees and about 18 degrees.
6. The end mill according to claim 1 , wherein the end mill is made of a substrate comprised of tungsten carbide cemented with cobalt in a range between about 3 wt. % to about 10 wt. %.
7. The end mill according to claim 6 , wherein the end mill further includes a diamond coating having a thickness between about 8 μm and about 20 μm.
8. The end mill according to claim 1 , wherein the end mill is made of a polycrystalline diamond (PCD) material.
9. An end mill for orbital drilling of fiber reinforced plastics having a dish angle between about 2 degrees and about 6 degrees; a plurality of flutes at a helix angle of between about 5 degrees and about 18 degrees; an end teeth radial rake angle between about 0 degrees and about 15 degrees; a peripheral teeth radial rake angle between about 8 degrees and about 16 degrees; a gashing axial rake angle between about 3 degrees and about 10 degrees; and a primary clearance angle between about 10 degrees and about 18 degrees.
10. The end mill according to claim 9 , wherein the end mill is made of a substrate comprised of tungsten carbide cemented with cobalt in a range between about 3 wt. % to about 10 wt. %.
11. The end mill according to claim 10 , wherein the end mill further includes a diamond coating having a thickness between about 8 μm and about 20 μm.
12. The end mill according to claim 9 , wherein the end mill is made of a polycrystalline diamond (PCD) material.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/786,562 US7431538B1 (en) | 2007-04-12 | 2007-04-12 | End mill for orbital drilling of fiber reinforced plastic materials |
CA002681447A CA2681447A1 (en) | 2007-04-12 | 2008-04-11 | End mill for orbital drilling of fiber reinforced plastic materials |
BRPI0809549-3A BRPI0809549A2 (en) | 2007-04-12 | 2008-04-11 | TOP MILLING MACHINES FOR ORBITAL DRILLING OF FIBER-ENHANCED PLASTIC MATERIALS |
RU2009141714/02A RU2422252C1 (en) | 2007-04-12 | 2008-04-11 | End milling cutter for drilling plastic material reinforced by fibre |
JP2010503231A JP5568006B2 (en) | 2007-04-12 | 2008-04-11 | End mill for orbital drilling of fiber reinforced plastic materials |
EP08745602.6A EP2134495B1 (en) | 2007-04-12 | 2008-04-11 | End mill for orbital drilling of fiber reinforced plastic materials |
CN2008800117003A CN101657284B (en) | 2007-04-12 | 2008-04-11 | End mill for orbital drilling of fiber reinforced plastic materials |
PCT/US2008/060022 WO2008128035A1 (en) | 2007-04-12 | 2008-04-11 | End mill for orbital drilling of fiber reinforced plastic materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/786,562 US7431538B1 (en) | 2007-04-12 | 2007-04-12 | End mill for orbital drilling of fiber reinforced plastic materials |
Publications (2)
Publication Number | Publication Date |
---|---|
US7431538B1 US7431538B1 (en) | 2008-10-07 |
US20080253846A1 true US20080253846A1 (en) | 2008-10-16 |
Family
ID=39797230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/786,562 Active US7431538B1 (en) | 2007-04-12 | 2007-04-12 | End mill for orbital drilling of fiber reinforced plastic materials |
Country Status (8)
Country | Link |
---|---|
US (1) | US7431538B1 (en) |
EP (1) | EP2134495B1 (en) |
JP (1) | JP5568006B2 (en) |
CN (1) | CN101657284B (en) |
BR (1) | BRPI0809549A2 (en) |
CA (1) | CA2681447A1 (en) |
RU (1) | RU2422252C1 (en) |
WO (1) | WO2008128035A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100183383A1 (en) * | 2009-01-21 | 2010-07-22 | Kennametal Inc. | End mill for orbital drilling |
US20130177362A1 (en) * | 2009-12-22 | 2013-07-11 | Emanuele Cigni | Mill and method of use |
US8602698B2 (en) | 2010-08-25 | 2013-12-10 | Kennametal Inc. | Combination end milling/drilling/reaming cutting tool |
US8647025B2 (en) | 2011-01-17 | 2014-02-11 | Kennametal Inc. | Monolithic ceramic end mill |
US20200156162A1 (en) * | 2018-11-15 | 2020-05-21 | Kennametal Inc. | Orbital drill with left-handed and right-handed flutes |
US11440270B2 (en) | 2014-04-24 | 2022-09-13 | Teijin Limited | Carbon fiber reinforced resin processed product having end surface and method of manufacturing the same |
Families Citing this family (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2946552B1 (en) * | 2009-06-10 | 2012-06-01 | Snecma | METHOD FOR PCD TOOL MACHINING OF TURBINE BLADES IN CMC. |
WO2011020859A1 (en) * | 2009-08-19 | 2011-02-24 | Cemecon Ag | Coated tool |
JP5577771B2 (en) * | 2010-03-15 | 2014-08-27 | 三菱マテリアル株式会社 | End mill |
JP5803647B2 (en) * | 2011-02-16 | 2015-11-04 | 三菱日立ツール株式会社 | End mill |
US8858129B2 (en) | 2011-02-24 | 2014-10-14 | Kennametal Inc. | Segmented orbital drill |
US9590159B2 (en) | 2011-07-25 | 2017-03-07 | The Boeing Company | Thermoelectric power generation from power feeder |
DE102011054677B4 (en) | 2011-10-20 | 2023-11-16 | Gühring KG | Milling tool |
GB201205886D0 (en) * | 2012-04-02 | 2012-05-16 | Technicut Ltd | Fluted drill |
US9643260B2 (en) * | 2014-01-22 | 2017-05-09 | The Boeing Company | Systems and methods for forming an opening in a stack |
CN105939805B (en) * | 2014-01-28 | 2018-02-02 | 京瓷株式会社 | The manufacture method of slotting cutter and machining thing |
DE202014000866U1 (en) * | 2014-02-03 | 2015-05-06 | Johne & Co. Präzisionswerkzeuge GmbH | Tool head element for manufacturing a tool head, tool head and tool receiving means |
DE102014103103A1 (en) | 2014-03-07 | 2015-09-10 | Gühring KG | End mills |
RU2568231C1 (en) * | 2014-09-03 | 2015-11-10 | Открытое акционерное общество Центральный научно-исследовательский институт специального машиностроения | End mill for laminated plastic treatment |
DE202014007558U1 (en) * | 2014-09-22 | 2014-11-18 | Wpt Nord Gmbh | Drilling tool for modification of a blind hole |
CN104651701B (en) * | 2015-02-14 | 2017-10-24 | 江苏和鹰机电科技有限公司 | Heat radiating type complex cutter material for glass-cutting fiber and preparation method thereof |
US10058933B2 (en) | 2015-04-03 | 2018-08-28 | The Boeing Company | Orbital cutting tool having cutting edges with axially varying circumferential spacing |
DE102015013247B4 (en) | 2015-10-08 | 2022-06-09 | Walter Bauer | Drill with counter-boring function and counter-boring process for lightweight materials |
US10953481B2 (en) | 2016-03-13 | 2021-03-23 | The Boeing Company | Machining/burnishing dual geometry orbital drilling tool |
EP3251776B1 (en) * | 2016-06-02 | 2023-04-19 | Sandvik Intellectual Property AB | Method and apparatuses related to hole cutting |
WO2019210506A1 (en) * | 2018-05-04 | 2019-11-07 | 大连理工大学 | Helical milling tool with forward and backward feeding |
EP3789143A4 (en) * | 2018-05-04 | 2021-12-22 | Dalian University Of Technology | Forward-reverse feed helical milling method |
JP7320391B2 (en) * | 2019-06-28 | 2023-08-03 | 株式会社Subaru | End mill and drilling method |
CN113199068A (en) * | 2021-03-31 | 2021-08-03 | 成都飞机工业(集团)有限责任公司 | Machining method for sharp corner structure of glass fiber reinforced plastic part |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4341044A (en) * | 1980-05-19 | 1982-07-27 | Mcdonnell Douglas Corporation | Machine for grinding gashes in end mill cutters |
US4564321A (en) * | 1983-05-13 | 1986-01-14 | Fuji Seiko Limited | End-milling cutter with drilling capability |
US5322394A (en) * | 1992-03-09 | 1994-06-21 | Hitachi Tool Engineering, Ltd. | Highly stiff end mill |
US5709907A (en) * | 1995-07-14 | 1998-01-20 | Kennametal Inc. | Method of making coated cutting tools |
US6179528B1 (en) * | 1994-05-06 | 2001-01-30 | Lon J. Wardell | End-mill tool with high and low helical flutes and related method for rough cutting and finishing a workpiece |
US20020141833A1 (en) * | 2001-02-15 | 2002-10-03 | Robbjack Corporation | End mill |
US20030053870A1 (en) * | 2001-09-14 | 2003-03-20 | Flynn Clifford M. | Arc-ended cutting tools |
US20040115434A1 (en) * | 1998-12-28 | 2004-06-17 | Ngk Spark Plug Co., Ltd. | Cutting tool coated with diamond |
US20050117982A1 (en) * | 2001-03-05 | 2005-06-02 | Avi Dov | Mult- purpose end-mill |
US6997651B2 (en) * | 2003-01-22 | 2006-02-14 | Osg Corporation | End mill having different axial rake angles and different radial rake angles |
US7001113B2 (en) * | 2001-09-10 | 2006-02-21 | Flynn Clifford M | Variable helix cutting tools |
US7014394B2 (en) * | 2003-08-07 | 2006-03-21 | Exactaform Cutting Tools, Ltd. | Cutting tool |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5031484A (en) * | 1990-05-24 | 1991-07-16 | Smith International, Inc. | Diamond fluted end mill |
US5209612A (en) * | 1992-03-27 | 1993-05-11 | The Budd Company | Cutting tool |
US5855458A (en) * | 1993-03-09 | 1999-01-05 | Hydra Tools International Plc | Rotary cutter |
JPH09309020A (en) * | 1996-05-24 | 1997-12-02 | Hitachi Tool Eng Ltd | Three-dimensional machining cemented solid end mill |
JPH10225812A (en) * | 1997-02-10 | 1998-08-25 | Hitachi Tool Eng Co Ltd | End mill for machining tapered groove |
JPH1170405A (en) * | 1997-08-30 | 1999-03-16 | Hitachi Tool Eng Co Ltd | Radius end mill |
JP3551796B2 (en) * | 1998-11-11 | 2004-08-11 | トヨタ自動車株式会社 | Rotary tool and method of machining reverse tapered hole using the rotary tool |
JP3891727B2 (en) * | 1999-05-28 | 2007-03-14 | オーエスジー株式会社 | End mill |
JP2002292514A (en) * | 2001-03-30 | 2002-10-08 | Hitachi Tool Engineering Ltd | End mill of small diameter for cutting contour line |
FR2827204B1 (en) * | 2001-07-13 | 2003-10-10 | Airbus France | ROTARY CUTTING TOOL AND HIGH SPEED MACHINING METHOD WITH NANO LUBRICATION, USING SUCH A TOOL |
JP3711255B2 (en) * | 2001-09-21 | 2005-11-02 | 日立ツール株式会社 | End mill with taper |
DE10225481A1 (en) * | 2002-06-10 | 2003-12-18 | Sandvik Ab | Shell end milling tool has an end auxiliary cutting edge with a convex curvature, and structured dimensions, to give a smooth milled workpiece surface |
JP4058761B2 (en) * | 2002-06-18 | 2008-03-12 | 三菱マテリアル株式会社 | Surface-coated cemented carbide end mill with excellent torsional deformation resistance when cutting under high feed conditions |
CN100479958C (en) * | 2004-03-12 | 2009-04-22 | 山特维克知识产权股份有限公司 | Cutting tool and method for cutting material |
KR101225215B1 (en) * | 2004-03-12 | 2013-01-22 | 반 프랑켄휘첸 비브이 | Cutting tool and method for cutting material |
JP2006152424A (en) * | 2004-12-01 | 2006-06-15 | Osg Corp | Hard film, and hard film-coated cutting tool |
IL167779A (en) | 2005-03-31 | 2013-09-30 | Hanita Metal Works Ltd | Orbital end mill |
JP2007030074A (en) * | 2005-07-25 | 2007-02-08 | Mitsubishi Materials Kobe Tools Corp | Radius end mill and cutting method |
-
2007
- 2007-04-12 US US11/786,562 patent/US7431538B1/en active Active
-
2008
- 2008-04-11 RU RU2009141714/02A patent/RU2422252C1/en not_active IP Right Cessation
- 2008-04-11 CN CN2008800117003A patent/CN101657284B/en active Active
- 2008-04-11 BR BRPI0809549-3A patent/BRPI0809549A2/en not_active IP Right Cessation
- 2008-04-11 EP EP08745602.6A patent/EP2134495B1/en active Active
- 2008-04-11 WO PCT/US2008/060022 patent/WO2008128035A1/en active Application Filing
- 2008-04-11 CA CA002681447A patent/CA2681447A1/en not_active Abandoned
- 2008-04-11 JP JP2010503231A patent/JP5568006B2/en not_active Expired - Fee Related
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4341044A (en) * | 1980-05-19 | 1982-07-27 | Mcdonnell Douglas Corporation | Machine for grinding gashes in end mill cutters |
US4564321A (en) * | 1983-05-13 | 1986-01-14 | Fuji Seiko Limited | End-milling cutter with drilling capability |
US5322394A (en) * | 1992-03-09 | 1994-06-21 | Hitachi Tool Engineering, Ltd. | Highly stiff end mill |
US6179528B1 (en) * | 1994-05-06 | 2001-01-30 | Lon J. Wardell | End-mill tool with high and low helical flutes and related method for rough cutting and finishing a workpiece |
US5709907A (en) * | 1995-07-14 | 1998-01-20 | Kennametal Inc. | Method of making coated cutting tools |
US20040115434A1 (en) * | 1998-12-28 | 2004-06-17 | Ngk Spark Plug Co., Ltd. | Cutting tool coated with diamond |
US20020141833A1 (en) * | 2001-02-15 | 2002-10-03 | Robbjack Corporation | End mill |
US20050117982A1 (en) * | 2001-03-05 | 2005-06-02 | Avi Dov | Mult- purpose end-mill |
US7001113B2 (en) * | 2001-09-10 | 2006-02-21 | Flynn Clifford M | Variable helix cutting tools |
US20030053870A1 (en) * | 2001-09-14 | 2003-03-20 | Flynn Clifford M. | Arc-ended cutting tools |
US6997651B2 (en) * | 2003-01-22 | 2006-02-14 | Osg Corporation | End mill having different axial rake angles and different radial rake angles |
US7014394B2 (en) * | 2003-08-07 | 2006-03-21 | Exactaform Cutting Tools, Ltd. | Cutting tool |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100183383A1 (en) * | 2009-01-21 | 2010-07-22 | Kennametal Inc. | End mill for orbital drilling |
WO2010090777A1 (en) * | 2009-01-21 | 2010-08-12 | Kennametal Inc. | End mill for orbital drilling |
US7959382B2 (en) | 2009-01-21 | 2011-06-14 | Kennametal Inc. | End mill for orbital drilling |
US20130177362A1 (en) * | 2009-12-22 | 2013-07-11 | Emanuele Cigni | Mill and method of use |
US9296051B2 (en) * | 2009-12-22 | 2016-03-29 | Nuovo Pignone S.P.A. | Mill and method of use |
US8602698B2 (en) | 2010-08-25 | 2013-12-10 | Kennametal Inc. | Combination end milling/drilling/reaming cutting tool |
US8647025B2 (en) | 2011-01-17 | 2014-02-11 | Kennametal Inc. | Monolithic ceramic end mill |
US9481041B2 (en) | 2011-01-17 | 2016-11-01 | Kennametal Inc | Monolithic ceramic end mill |
US11440270B2 (en) | 2014-04-24 | 2022-09-13 | Teijin Limited | Carbon fiber reinforced resin processed product having end surface and method of manufacturing the same |
US20200156162A1 (en) * | 2018-11-15 | 2020-05-21 | Kennametal Inc. | Orbital drill with left-handed and right-handed flutes |
US10710175B2 (en) | 2018-11-15 | 2020-07-14 | Kennametal Inc. | Orbital drill with left-handed and right-handed flutes |
Also Published As
Publication number | Publication date |
---|---|
BRPI0809549A2 (en) | 2014-09-16 |
US7431538B1 (en) | 2008-10-07 |
JP2010523356A (en) | 2010-07-15 |
RU2422252C1 (en) | 2011-06-27 |
EP2134495B1 (en) | 2015-03-11 |
EP2134495A1 (en) | 2009-12-23 |
RU2009141714A (en) | 2011-05-20 |
CN101657284B (en) | 2012-04-18 |
CN101657284A (en) | 2010-02-24 |
WO2008128035A1 (en) | 2008-10-23 |
EP2134495A4 (en) | 2013-05-29 |
CA2681447A1 (en) | 2008-10-23 |
JP5568006B2 (en) | 2014-08-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7431538B1 (en) | End mill for orbital drilling of fiber reinforced plastic materials | |
US8602698B2 (en) | Combination end milling/drilling/reaming cutting tool | |
EP2286945B1 (en) | Twist drill bit | |
US20080019787A1 (en) | Drill for machining fiber reinforced composite material | |
US7959382B2 (en) | End mill for orbital drilling | |
US9446454B2 (en) | Segmented orbital drill | |
JP5184902B2 (en) | Drilling tools and drilling methods for fiber reinforced composites | |
KR101870484B1 (en) | Twist drill and method of drilling composite materials, use and method regrinding and manufacturing thereof | |
WO2010086988A1 (en) | Double angle drill | |
JP5292900B2 (en) | Diamond coated tool with excellent fracture resistance and wear resistance | |
US10710175B2 (en) | Orbital drill with left-handed and right-handed flutes | |
KR20220158803A (en) | A rotary cutting tool having continuous major flutes and discontinuous minor flutes that intersect to form a quadrilateral shaped face portion. | |
US11759870B2 (en) | End mill and drilling method | |
JP5246597B2 (en) | Diamond coated tools | |
CN209998480U (en) | butt welding type small-diameter PCD spiral reamer | |
CN209867496U (en) | Lengthened PCD spiral blade end milling cutter |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: KENNAMETAL INC., PENNSYLVANIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NI, WANGYANG;CHANDLER, JASON W.;REEL/FRAME:019401/0208;SIGNING DATES FROM 20070530 TO 20070604 |
|
STCF | Information on status: patent grant |
Free format text: PATENTED CASE |
|
FPAY | Fee payment |
Year of fee payment: 4 |
|
FPAY | Fee payment |
Year of fee payment: 8 |
|
MAFP | Maintenance fee payment |
Free format text: PAYMENT OF MAINTENANCE FEE, 12TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1553); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY Year of fee payment: 12 |