• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    K-3044USPC CONTOUR END MILL ABSTRACT OF THE DISCLOSURE A Contour end mi11 (10) includes a shank portion (12) and acutting portion (14). The cutting portion defines a cutting diameter(18), a corner radius (24) and a major radius (26). The majorradius is greater than one-half of the cutting diameter. As a result,the end mi11 produces a much smoother finish and a reduced chip thickness.
    公开号:SE1350162A1
    申请号:SE1350162
    申请日:2011-05-31
    公开日:2013-02-11
    发明作者:Danny R Davis
    申请人:Kennametal Inc；
    IPC主号:
    专利说明:

    [1] [0001]
    [2] [0002]
    [3] [0003] CONTOUR END MILL BACKGROUND OF THE INVENTION End mills are Widely used in milling operations due to theirversatile range of application and due to the moderate cost of thetool. End mills are often of cylindrical shape, and are generallyavailable up to about 80 mm diameter. Many end mills have flatends; however other shapes such as conical and rounded ends arealso used. Typically, an end mill has tWo (2) to ten (10) teeth,depending on diameter, size and Whether configured for roughcutting or finishing. The teeth are usually spiral shaped, but can bestraight and parallel to the longitudinal axis. Common materialsused in the construction of end mills are high speed steel, solidcarbide, cerrnets or ceramic, or combinations thereof.
    [4] [0004]
    [5] [0005]
    [6] [0006]
    [7] [0007]
    [8] [0008]
    [9] [0009]
    [10] [00010] SUMMARY OF THE INVENTION The problem of rough finish and relatively large chip thicknessassociated With conventional end mills is solved by a contour endmill With a major radius that is greater than one-half of the cuttingdiameter.
    [11] [00011]
    [12] [00012]
    [13] [00013]
    [14] [00014]
    [15] [00015]
    [16] [00016][00017]
    [18] [00018]
    [19] [00019]
    [20] [00020]
    [21] [00021] FIG. 3 is an enlarged cutaway View of the end mill of FIG. 1;FIG. 4 is a plan end View ofthe end mill of FIG. 1; FIG. 5 is a side View of a two-fluted contour end mill according toan embodiment of the inVention; FIG. 6 is an enlarged side View of the cutting portion of the endmill ofFIG. 5; FIG. 7 is another enlarged side view of the cutting portion of theend mill of FIG. 6 rotated ninety (90) degrees; FIG. 8 is an end isometric View of the end mill of FIG. 5; FIG. 9 is a plan View of a cutting operation using the end mill ofthe inVention; FIGS. 10(a) and (b) are plan Views of a cutting operation showingimproved finish a reduced chip thickness using the end mill of theinVention; and FIGS. 11(a) and (b) are plan View of a cutting operation showingunacceptable finish and increased chip thickness using a conventional end mill.
    [22] [00022]
    [23] [00023]
    [24] [00024] smaller than the cutting diameter 18. The end mill 10 has anoverall length 20 and a length of cut 22. The cutting portion 14includes a comer radius 24 and a major radius 26. The end mill 10has a central, longitudinal axis 28.
    [25] [00025]
    [26] [00026]
    [27] [00027]
    [28] [00028] with any desirable number of cutting edges 60, for example, morethan two (2) cutting edges, and the like.
    [29] [00029]
    [30] [00030]
    [31] [00031]
    [32] [00032] Because both the corner radius 24 and the major radius 26 of theend mill 10 can be used during the cutting operation, the end mill10 of the invention can provide superior cutting perforrnance on themost complicated three-dimensional workpieces. By contrast,conventional end mills are incapable of perforrning the same typeof cutting operation on such complicated three-dimensionalworkpieces.
    As shown in FIGS. 10(a) and (b), the major radius 26 being largerthan more than one-half of the cutting diameter 18 provides severaldistinct advantages as compared to the conventional ball nose endmill shown in FIGS. 11(a) and (b). As shown in FIG. 10(a), theend mill 10 of the invention provides a much smoother fmish withthe same step over width as compared to the conventional ball noseend mill. As a result, the user spends less time fmishing theworkpiece. Altematively, the user can increase the step overwidth, which will dramatically reduce cycle time. As shown inFIG. 10(b), the end mill 10 of the invention at the same feed rateproduces chips having a thickness that is much less than thethickness of the chip produced by the conventional ball nose endmill shown in FIG. 11(b). Altematively, the user can substantiallyincrease the feed rate of the workpiece, which will dramaticallyreduce cycle time.
    As described above, the end mill 10 of the invention offers manydistinct advantages when compared to conventional ball nose endmills.
    The patents and publications referred to herein are herebyincorporated by reference.
    Having described presently preferred embodiments the inventionmay be otherwise embodied within the scope of the appended claims.
    权利要求:
    Claims (10)
    [1] 1. A Contour end mill (10), comprising:a shank portion (12); anda cutting portion (14) defining a cutting diameter (18), a comerradius (24) and a major radius (26),Wherein the major radius (26) is greater than one-half of the cutting diameter (1 8).
    [2] 2. The end mill of Claim 1, Wherein the comer radius (24) is less than one-half of the cutting diameter (18).
    [3] 3. The end mill of Claim 1, Wherein the cutting portion (14) furtherincludes a plurality of flutes (30) defining a core diameter (32), a radial rake angle(34), a rake check point (36), a radial primary angle (38), and a radial secondaryangle (40).
    [4] 4. The end mill of Claim 1, Wherein the cutting portion (14) furtherincludes a primary relief (48), a secondary relief, (50) a helical axial rake gash (52), and a heel relief (54).
    [5] 5. The end mill of Claim 4, Wherein a cutting edge (60) is formed at an intersection between the helical axial rake gash (52) and the primary relief (48).
    [6] 6. The end mill of Claim 4, Wherein the helical axial rake gash (52) is offset from a central, longitudinal axis (28) of the end mill.
    [7] 7. The end mill of Claim 4, Wherein the helical axial rake gash (52) isformed at a gash angle (62) With respect to a central, longitudinal axis (28) of the end mill. K-3 044
    [8] 8. The end mill of Claim 1, Wherein the cutting portion (14) further includes a center Web (56) having a non-zero thickness.
    [9] 9. A Contour end mill (10), comprising:a shank portion (12); anda cutting portion (14) def1ning a cutting diameter (18), a comerradius (24) and a major radius (26), the cutting portion (14) further including aplurality of flutes (30) def1ning a core diameter (32), a radial rake angle (34), arake check point (36), a radial primary angle (38), a radial secondary angle (40), aprimary relief (48), a secondary relief (50), a helical axial rake gash (52), a heelrelief (54), and a cutting edge (60) formed at an intersection between the helicalaxial rake gash (52) and the primary relief (48),Wherein the major radius (26) is greater than one-half of the cuttingdiameter (18), and Wherein the comer radius (24) is less than one-half of the cutting diameter (18).
    [10] 10. A method of end milling a Workpiece (70) using a contour end mill (10), the end mill comprising a shank portion (12); and a cutting portion (14)def1ning a cutting diameter (18), a comer radius (24) and a major radius (26), thecomer radius (24) being less than one-half of the cutting diameter (18), the majorradius (26) being greater than one-half of the cutting diameter (18), the methodcomprising: performing a cutting operation With the major radius (26) of thecutting portion (l4); and performing a cutting operation (26) With the comer radius (24) of the cutting portion (14).
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4116580A|1977-04-08|1978-09-26|Mcdonnell Douglas Corporation|All cutting edge drill|
    JPH0561047B2|1989-07-28|1993-09-03|Kobe Steel Ltd|
    JPH04146017A|1990-10-03|1992-05-20|Fukuchi Kosakusho:Kk|End mill|
    SE9202838D0|1992-09-30|1992-09-30|Sandvik Ab|Full radius TOOLS|
    JP3288780B2|1993-01-21|2002-06-04|日進工具株式会社|Ball end mill|
    SE9300875D0|1993-03-17|1993-03-17|Sandvik Ab|PINNFRAES|
    FR2713527B1|1993-12-08|1996-01-12|Snecma|Drill bit with hemispherical head with progressive cut.|
    SE509218C2|1994-08-29|1998-12-21|Sandvik Ab|shaft Tools|
    JPH08141816A|1994-11-09|1996-06-04|Hitachi Tool Eng Ltd|Graphite machining ball end mill|
    JPH08318419A|1995-05-23|1996-12-03|Kobe Steel Ltd|End mill|
    JP3957230B2|1996-09-05|2007-08-15|日立ツール株式会社|Ball end mill|
    JP3189725B2|1997-03-11|2001-07-16|三菱マテリアル株式会社|Ball end mill|
    JPH10263913A|1997-03-25|1998-10-06|Hitachi Tool Eng Co Ltd|Ball end mill|
    JP2001071209A|1999-09-06|2001-03-21|Btt Kk|Ball end mill|
    JP4470295B2|2000-08-08|2010-06-02|三菱マテリアル株式会社|Ball end mill|
    JP2002283121A|2001-03-27|2002-10-03|Toyoda Gosei Co Ltd|End mill and cutting method using this end mill|
    JP2003311524A|2002-04-18|2003-11-05|Nachi Fujikoshi Corp|Cemented carbide ball end mill|
    JP2004202622A|2002-12-25|2004-07-22|Mitsubishi Materials Kobe Tools Corp|Ball end mill|
    JP3590800B1|2003-07-07|2004-11-17|有限会社中津川超硬刃物|End mill|
    JP4677722B2|2004-02-13|2011-04-27|三菱マテリアル株式会社|3-flute ball end mill|
    JP2006088278A|2004-09-24|2006-04-06|Osg Corp|End mill for machining rib groove|
    JP2006224254A|2005-02-18|2006-08-31|Izumo Sangyo Kk|Ball end mill|
    IL174720A|2006-04-02|2010-04-15|Alexander Khina|Cutting tool|
    JP4975395B2|2006-08-22|2012-07-11|日立ツール株式会社|Ball end mill|CN103764326B|2011-06-17|2015-12-16|日立工具股份有限公司|Multiflute end mill|
    GB201205886D0|2012-04-02|2012-05-16|Technicut Ltd|Fluted drill|
    US9011051B2|2012-04-12|2015-04-21|Lockheed Martin Corporation|Multi-spindle milling|
    JP6344391B2|2013-08-06|2018-06-20|三菱日立ツール株式会社|Multi-blade ball end mill|
    CN103962616B|2014-05-28|2016-08-24|哈尔滨理工大学|A kind of orthogonal screw ellipse rose cutter of shape cutting edge for processed complex curved surface|
    DE102014108513A1|2014-06-17|2015-12-17|Franz Haimer Maschinenbau Kg|Rotary cutting tool|
    DE202014007558U1|2014-09-22|2014-11-18|Wpt Nord Gmbh|Drilling tool for modification of a blind hole|
    CN105665805B|2016-04-20|2017-09-01|哈尔滨理工大学|One kind is hardened the special indexable hat rose cutter of steel mold|
    IL249676A|2016-12-20|2021-08-31|Hanita Metal Works Ltd|End mills having differential twisted gash profiles|
    IL264757D0|2019-02-10|2020-08-31|Hanita Metal Works Ltd|End mill with independent rake surfaces|
    KR20210076530A|2019-12-16|2021-06-24|유림툴스주식회사|Combined machining tool|
    CN113441773A|2020-03-27|2021-09-28|京瓷株式会社|End mill and insert therefor|
    法律状态:
    2015-09-29| NAV| Patent application has lapsed|
    优先权:
    申请号 | 申请日 | 专利标题
    US12/854,841|US20120039677A1|2010-08-11|2010-08-11|Contour end mill|
    PCT/US2011/038530|WO2012021206A2|2010-08-11|2011-05-31|Contour end mill|
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