WO2004062840A1 - Plaquette de coupe et fraise - Google Patents

Plaquette de coupe et fraise Download PDF

Info

Publication number
WO2004062840A1
WO2004062840A1 PCT/IL2003/001068 IL0301068W WO2004062840A1 WO 2004062840 A1 WO2004062840 A1 WO 2004062840A1 IL 0301068 W IL0301068 W IL 0301068W WO 2004062840 A1 WO2004062840 A1 WO 2004062840A1
Authority
WO
WIPO (PCT)
Prior art keywords
cutting insert
cutting
abutment
section
insert
Prior art date
Application number
PCT/IL2003/001068
Other languages
English (en)
Inventor
Rafael Morgulis
Anton Babushkin
Original Assignee
Iscar Ltd.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Iscar Ltd. filed Critical Iscar Ltd.
Priority to AU2003288492A priority Critical patent/AU2003288492A1/en
Publication of WO2004062840A1 publication Critical patent/WO2004062840A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
    • B23C5/2208—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts 
    • B23C5/2213—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts  having a special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/04—Overall shape
    • B23C2200/0422—Octagonal
    • B23C2200/0427—Octagonal rounded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/12—Side or flank surfaces
    • B23C2200/125—Side or flank surfaces discontinuous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/12—Side or flank surfaces
    • B23C2200/125—Side or flank surfaces discontinuous
    • B23C2200/126—Side or flank surfaces discontinuous stepped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/16—Supporting or bottom surfaces
    • B23C2200/167—Supporting or bottom surfaces star form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/20—Top or side views of the cutting edge
    • B23C2200/203—Curved cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/20—Top or side views of the cutting edge
    • B23C2200/208—Wiper, i.e. an auxiliary cutting edge to improve surface finish
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/16—Fixation of inserts or cutting bits in the tool
    • B23C2210/168—Seats for cutting inserts, supports for replacable cutting bits

Definitions

  • the present invention relates to a cutting insert and a milling cutter for metal cutting operations capable of performing both ramp down and high feed rate face milling operations.
  • Such milling cutters typically comprise a cylindrical cutter body having a plurality of cutting inserts secured in circumferentially spaced insert pockets disposed about the cutting end of the milling cutter.
  • Each cutting insert includes at least one cutting edge.
  • the shape of the cutting edge not only influences the performance of the cutting insert but also the feed rate of the milling cutter. For example, if round (button) inserts are used the feed rate can be increased, for a given smoothness of the milled surface, by increasing the radius of curvature of the cutting edge.
  • round (button) inserts are used the feed rate can be increased, for a given smoothness of the milled surface, by increasing the radius of curvature of the cutting edge.
  • US 6,413,023 Bl there is disclosed a generally rectangular indexable cutting insert having two arced main cutting edge sections, each one connected to a straight-line section.
  • the total number edges has to be reduced do to the constraint that the outer peripheral cutting edge is designed to be back tapered with respect to the center axis of the cutting tool.
  • the cutting insert disclosed in US '023 with three arced main cutting edge sections, each one connected to a straight line is generally triangular in shape.
  • a cutting insert with more than three cutting edges cannot be designed in accordance with the teachings of US '023.
  • Similar cutting inserts are disclosed in DE 100 52 963 Al, with the same limitation in the number of cutting edges.
  • a cutting insert comprising a top surface a bottom surface and a peripheral side surface extending therebetween, the top and peripheral side surfaces intersecting at a cutting edge comprising an integral number of greater than two identical circular sections, each circular section lying on a circle having a first diameter, wherein in a top view of the cutting insert the top surface has an inscribed circle having a second diameter smaller than the first diameter.
  • the peripheral side surface comprises a relief surface adjacent the cutting edge, an abutment surface adjacent the bottom surface and an intermediate surface extending between the relief and abutment surfaces.
  • the abutment surface comprises an integral number of greater than two identical abutment sections.
  • the relief surface is generally conical in shape extending downwards and inwards from the cutting edge to the intermediate surface. Further if desired, each abutment section is flat.
  • the cutting edge comprises eight circular sections. If desired, adjacent circular sections are separated by a straight-edge section.
  • the straight-edge section has a length in the range of 1 to 2 millimeters.
  • a milling cutter comprising a cutter body provided with a plurality of cutting inserts in accordance with the present invention retained in insert pockets; each insert pocket comprising a base surface and two side surfaces extending generally uprightly from the base surface, each side surface being provided with a support surface; wherein the insert bottom surface abuts the base surface, a first support surface abuts a first abutment section and a second support surface abuts a second abutment section.
  • first and second abutment sections are perpendicular to each other.
  • FIG. 1 is a perspective view of a cutting insert in accordance with a first embodiment of the present invention
  • Fig. 2 is a side view of the cutting insert shown in Fig. 1 ;
  • Fig. 3 is a top view of the cutting insert shown in Fig. 1;
  • Fig. 4 is a side view of a milling cutter in accordance with the present invention
  • Fig. 5 is a perspective view of an insert pocket of the milling cutter shown in Fig.
  • Fig. 6 is a top view of a cutting insert in accordance with a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION
  • the cutting insert 10 comprises a top surface 12 a bottom surface 14 and a peripheral side surface 16 extending between the top and bottom surfaces 12, 14.
  • the cutting insert 10 is typically manufactured by form-pressing and sintering carbide powders, however, injection molding techniques can also be used.
  • the top and peripheral side surfaces 12, 16 intersect at a cutting edge 18 comprising eight identical circular sections 20 and straight-edge sections 22 separating adjacent circular sections 20.
  • Each circular section 20 forms a cutting edge section and is part of a circle Cl having a first diameter Dl.
  • a through bore 24 extends through the cutting insert 10 between the top and bottom surface 12, 14.
  • a rake surface 26 extends from adjacent the cutting edge 18 towards the through bore 24.
  • the particular form of the rake surface 26 and the possible provision of chip breakers is a matter of technical design and does not constitute part of the present invention.
  • the top surface 12 is generally circular in shape and has an inscribed circle C2 having a second diameter D2 smaller than the first diameter Dl.
  • the straight-edge sections 22 are used as wipers and typically have a length in the range of 1 to 2 millimeters, independent of the magnitudes of the first and second diameters Dl, D2.
  • the length of each circular segment 20 is greater than the length of each straight-edge section 22.
  • the first diameter Dl has a value of 30 millimeters and the second diameter D2 has a value of 20 millimeters.
  • the cutting insert 10 has, in a top view, the overall appearance of a round cutting insert having a radius of 10 millimeters, whereas each cutting edge circular section 20 has a radius of curvature of 15 millimeters. Therefore, the cutting insert 10 in accordance with the present invention has the cutting advantages of a large diameter circular cutting insert whilst having the compactness of a small diameter circular cutting insert.
  • the peripheral side surface 16 comprises three surface portions 28, 30, 32.
  • An upper surface portion 28 adjacent the cutting edge forming a relief surface
  • a lower surface portion 30 adjacent the bottom surface forming an abutment surface and an intermediate surface portion 32 extending between the upper and lower surface portions 28, 30.
  • the relief surface 28 is generally conical in shape extending downwards and inwards from the cutting edge 18 to the intermediate surface portion 32.
  • the abutment surface 30 comprises eight identical flat abutment sections 34.
  • a milling cutter 36 for retaining cutting inserts 10 in accordance with the present invention is shown in Fig. 4.
  • the milling cutter 36 has an axis of rotation A and comprises a cutter body 38 having a plurality insert pockets 40 in which cutting inserts 10 in accordance with the first embodiment of the present invention are secured by means of clamping screws 42.
  • Each cutting insert 10 has an operative wiper 22' located between two operative cutting edge sections 20', 20" of the cutting edge.
  • the operative wipers 22' of all the cutting inserts 10 retained in the milling cutter 36 are located in an end-face plane P of the milling cutter 36.
  • the end-face plane P is perpendicular to the axis of rotation A.
  • Each insert pocket 40 comprises a base surface 44 and two side surfaces 46, 48 extending generally uprightly from the base surface 44.
  • the base surface 44 is provided with a threaded bore 50 for receiving the clamping screw 42 and each side surface 46, 48 is provided with a support surface 52, 54 for supporting the cutting insert 10.
  • the bottom surface 14 of the cutting insert 10 abuts the base surface 44
  • a first operative abutment section 34' of the cutting insert 10 abuts a first support surface 52 of the insert pocket 40
  • a second operative abutment section 34" of the cutting insert 10 abuts a second support surface 54 of the insert pocket 40.
  • the first and second support surfaces 52, 54 of the insert pocket are perpendicular to each other and consequently, the first and second operative abutment sections 34', 34" are also perpendicular to each other.
  • Fig. 3 the end-face plane P of the milling cutter is shown. Also shown, in dashed lines, is an outline of the abutment surface 30 and the operative abutment sections 34', 34" of the cutting insert 10. The circle Cl associated with the operative cutting edge section 20' for milling operations is also shown.
  • a cutting insert 56 in accordance with a second embodiment of the present invention is shown in Fig. 6.
  • the cutting edge 18 comprises eight identical circular sections 20.
  • the cutting insert 56 in accordance with the second embodiment has no straight-edge sections separating adjacent circular sections 20.
  • the cutting insert 56 in accordance with the second embodiment is identical to the cutting insert 10 in accordance with the first embodiment.
  • Fig. 6 also shows the orientation of the cutting insert 56 in accordance with the second embodiment relative to the end-face plane P, when the cutting insert 56 is retained in an insert pocket 40 of the milling cutter 36.
  • a small end section of the operative cutting edge 20' for face milling operations is located substantially in the end-face plane P and forms a wiper 58 of the operative cutting edge 20'. Also shown, in dashed lines, is the outline of the abutment surface 30 and the operative abutment sections 34', 34" of the cutting insert 56.
  • the abutment surface of the cutting insert and the support surfaces of the insert pocket can be of any convenient shape that will on the one hand maintain the cutting insert in position in the insert pocket and in the other hand will allow for indexing the cutting insert into a new position when required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

L'invention concerne une plaquette de coupe (10) destinée à une fraise possédant les avantages de coupe d'une plaquette à grand diamètre circulaire, tout en possédant la compacité d'une plaquette de coupe à petit diamètre circulaire. La lame de coupe comprend un nombre entier de plus de deux sections (20) circulaires identiques, chaque section circulaire se trouvant sur un cercle d'un premier diamètre (D1), dans la vue aérienne duquel la plaquette de coupe comporte un cercle inscrit d'un second diamètre (D2) inférieur au premier (D1).
PCT/IL2003/001068 2003-01-14 2003-12-15 Plaquette de coupe et fraise WO2004062840A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003288492A AU2003288492A1 (en) 2003-01-14 2003-12-15 Cutting insert and milling cutter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL15393803A IL153938A0 (en) 2003-01-14 2003-01-14 Cutting insert and milling cutter
IL153938 2003-01-14

Publications (1)

Publication Number Publication Date
WO2004062840A1 true WO2004062840A1 (fr) 2004-07-29

Family

ID=29798441

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2003/001068 WO2004062840A1 (fr) 2003-01-14 2003-12-15 Plaquette de coupe et fraise

Country Status (3)

Country Link
AU (1) AU2003288492A1 (fr)
IL (1) IL153938A0 (fr)
WO (1) WO2004062840A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010101514A1 (fr) * 2009-03-06 2010-09-10 Seco Tools Ab Insert de coupe avec surface évidée de support d'insert, et outil de coupe
US20110123283A1 (en) * 2008-06-26 2011-05-26 Benjamin Michelet Cutting insert with a wiper edge
WO2013062721A1 (fr) * 2011-10-25 2013-05-02 TDY Industries, LLC Plaquettes de coupe présentant des faces en dépouille non contiguës
WO2013071998A1 (fr) * 2011-11-16 2013-05-23 Ceratizit Luxembourg S.A.R.L. Plaquette de coupe
JP2014050948A (ja) * 2012-09-07 2014-03-20 Sandvik Intellectual Property Ab ミーリング工具及び切削インサート
EP2883636A4 (fr) * 2012-08-10 2016-07-13 Sumitomo Elec Hardmetal Corp Outil de tournage sur tour
EP3050655B1 (fr) 2015-01-30 2017-03-22 Sandvik Intellectual Property AB Insert de fraisage et outil de fraisage
EP3533546A4 (fr) * 2018-01-08 2019-09-04 OSG Corporation Insert et corps

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3642514C1 (en) * 1986-12-12 1988-06-09 Fette Wilhelm Gmbh One-edged spherical copy milling cutter and turnover plate for a spherical copy milling cutter
EP0936015A1 (fr) * 1998-02-12 1999-08-18 Seco Tools Ab Outil de coupe et plaquette de coupe
US6053671A (en) * 1995-06-21 2000-04-25 Seco Tools Ab Metal cutting insert, and tool therefor, and method of mounting insert
US20020090272A1 (en) * 2001-01-10 2002-07-11 Waggle James M. Cutting insert and method of making the same
WO2003051566A1 (fr) * 2001-12-18 2003-06-26 Kennametal Inc. Matrice de decoupe

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3642514C1 (en) * 1986-12-12 1988-06-09 Fette Wilhelm Gmbh One-edged spherical copy milling cutter and turnover plate for a spherical copy milling cutter
US6053671A (en) * 1995-06-21 2000-04-25 Seco Tools Ab Metal cutting insert, and tool therefor, and method of mounting insert
EP0936015A1 (fr) * 1998-02-12 1999-08-18 Seco Tools Ab Outil de coupe et plaquette de coupe
US20020090272A1 (en) * 2001-01-10 2002-07-11 Waggle James M. Cutting insert and method of making the same
WO2003051566A1 (fr) * 2001-12-18 2003-06-26 Kennametal Inc. Matrice de decoupe

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110123283A1 (en) * 2008-06-26 2011-05-26 Benjamin Michelet Cutting insert with a wiper edge
US8529168B2 (en) * 2008-06-26 2013-09-10 Seco Tools Ab Cutting insert with a wiper edge
CN102341204A (zh) * 2009-03-06 2012-02-01 山高刀具公司 带有凹陷的刀片支撑表面的切削刀片和切削刀具
US8430607B2 (en) 2009-03-06 2013-04-30 Seco Tools Ab Cutting insert with recessed insert supporting surface, and cutting tool
RU2508180C2 (ru) * 2009-03-06 2014-02-27 Секо Тулз Аб Режущая пластина с углубленной опорной поверхностью пластины и режущий инструмент
WO2010101514A1 (fr) * 2009-03-06 2010-09-10 Seco Tools Ab Insert de coupe avec surface évidée de support d'insert, et outil de coupe
WO2013062721A1 (fr) * 2011-10-25 2013-05-02 TDY Industries, LLC Plaquettes de coupe présentant des faces en dépouille non contiguës
US9079251B2 (en) 2011-10-25 2015-07-14 Kennametal Inc. Cutting inserts having discontiguous clearance faces
WO2013071998A1 (fr) * 2011-11-16 2013-05-23 Ceratizit Luxembourg S.A.R.L. Plaquette de coupe
US9776251B2 (en) 2012-08-10 2017-10-03 Sumitomo Electric Hardmetal Corp. Lathe turning tool
EP2883636A4 (fr) * 2012-08-10 2016-07-13 Sumitomo Elec Hardmetal Corp Outil de tournage sur tour
JPWO2014024862A1 (ja) * 2012-08-10 2016-07-25 住友電工ハードメタル株式会社 旋削加工用工具
JP2014050948A (ja) * 2012-09-07 2014-03-20 Sandvik Intellectual Property Ab ミーリング工具及び切削インサート
EP3050655B1 (fr) 2015-01-30 2017-03-22 Sandvik Intellectual Property AB Insert de fraisage et outil de fraisage
US10512975B2 (en) 2015-01-30 2019-12-24 Sandvik Intellectual Property Ab Milling insert and a milling tool
EP3533546A4 (fr) * 2018-01-08 2019-09-04 OSG Corporation Insert et corps
CN110248754A (zh) * 2018-01-08 2019-09-17 Osg株式会社 嵌件以及机体
US11338373B2 (en) 2018-01-08 2022-05-24 Osg Corporation Insert and body

Also Published As

Publication number Publication date
IL153938A0 (en) 2003-07-31
AU2003288492A1 (en) 2004-08-10

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