EP2358493A2 - Insert d'ébauche, et insert et dispositif de coupe utilisant celui-ci - Google Patents

Insert d'ébauche, et insert et dispositif de coupe utilisant celui-ci

Info

Publication number
EP2358493A2
EP2358493A2 EP09826253A EP09826253A EP2358493A2 EP 2358493 A2 EP2358493 A2 EP 2358493A2 EP 09826253 A EP09826253 A EP 09826253A EP 09826253 A EP09826253 A EP 09826253A EP 2358493 A2 EP2358493 A2 EP 2358493A2
Authority
EP
European Patent Office
Prior art keywords
insert
raised portions
peripheral side
inserts
side surfaces
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.)
Withdrawn
Application number
EP09826253A
Other languages
German (de)
English (en)
Other versions
EP2358493A4 (fr
Inventor
Hyun-Hwa Jeong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taegutec Ltd
Original Assignee
Taegutec 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 Taegutec Ltd filed Critical Taegutec Ltd
Publication of EP2358493A2 publication Critical patent/EP2358493A2/fr
Publication of EP2358493A4 publication Critical patent/EP2358493A4/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/002—Milling elongated workpieces
    • B23C3/005—Rails
    • 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
    • B23C5/12—Cutters specially designed for producing particular profiles
    • 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
    • B23C5/202—Plate-like cutting inserts with special form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/08—Rake or top surfaces
    • B23C2200/085—Rake or top surfaces discontinuous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/16—Supporting or bottom surfaces
    • B23C2200/164—Supporting or bottom surfaces discontinuous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/16—Supporting or bottom surfaces
    • B23C2200/165—Supporting or bottom surfaces with one or more grooves
    • 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
    • B23C2200/205—Discontinuous cutting edges
    • 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

  • This disclosure is related to blank inserts of specific shapes, inserts machined from the blank inserts, and cutters mounted with the inserts. These inserts are typically used with cutters for rail machining, have longer durability by providing more cutting edges than conventional inserts, and allow reduced production cost.
  • Rail machining cutters may have various shapes according to the shape of the rail to be machined, and thus various insert shapes are also needed.
  • FIGs. 1 and 2 depict situations where cutters mounted with various kinds of inserts in a specific arrangement are machining specific portions of rails. Inserts mounted on these cutters need edges with various convex or concave curvatures which are generally formed by grinding regular quadrilateral negative blanks.
  • the present invention aims to expedite the grinding process, to save raw material, and to extend the service life of cutting inserts which have various curvatures of their cutting edges. Also, the present invention aims to provide cutters which have a pocket structure that allows stable mounting for cutting inserts which have various curvatures of their cutting edges.
  • a blank insert according to the present disclosure comprises upper and lower surfaces joined by peripheral side surfaces provided with a through-hole extending between the upper and lower surfaces, each of the upper and lower surfaces comprising two raised portions and a central notch; the two raised portions have a flat upper surface, adjoin two opposing side peripheral side surfaces, and extend along the entire length of the two opposing side peripheral side surfaces; and the central notch is formed as a flat plane between the two raised portions.
  • An insert according to the present disclosure comprises upper and lower surfaces joined by peripheral side surfaces provided with a through-hole extending between the upper and lower surfaces, each of the upper and lower surfaces comprising two raised portions and a central notch; the two raised portions adjoin two opposing side peripheral side surfaces, and extend along the entire length of the two opposing side peripheral side surfaces, and the upper surface comprises concave or convex surfaces curved along the two opposing side peripheral side surfaces; and the central notch is formed as a flat plane between the two raised portions.
  • the central notch may be depressed stepwisely from the raised portions.
  • a cutter mountable with the insert according to the present disclosure has an insert pocket comprising two side walls for supporting the peripheral side surfaces of the insert and one bottom wall that supports the lower surface of the insert, wherein the bottom wall has a protruded contact portion in the form of a flat plane corresponding to the central notch of the insert and depressed receiving portions for receiving the raised portions of the insert.
  • the inserts according to the present invention are ground such that there is less removed volume during grinding and thus raw material can be saved, and the grinding burden is much reduced compared with conventional inserts.
  • the inserts according to the present invention have a lower surface having the same structure as the upper surface and thus allows four cutting edges of the same shape. Therefore, the service life can be extended compared to that of conventional inserts.
  • the cutter pocket according to the present invention provides a sufficient support force in a radial direction by surface contact with the insert, and at the same time, can mount inserts with cutting edges of various curvatures.
  • FIGs. 1 and 2 are perspective views depicting situations where cutters mounted with various kinds of inserts are machining rails.
  • FIG. 3 is a perspective view showing a conventional blank insert and inserts ground from it.
  • FIG. 4 is a perspective view showing a blank insert of an embodiment according to an example of the present invention.
  • FIG. 5 is a perspective view showing inserts ground from the blank insert according to an example of the present invention.
  • FIG. 6 is a perspective view showing the ground portions of inserts according to an example of the present invention.
  • FIG. 7 is a perspective view showing states where various shapes of inserts are mountable to the cutter pocket according to an example of the present invention.
  • FIG. 4 shows a blank insert of an embodiment according to the present invention.
  • the blank insert 10 comprises upper and lower surfaces 100, 200 joined by peripheral side surfaces 310, 320, 330, 340, and is provided with a through-hole 400 extending between the upper and lower surfaces.
  • Each of the upper and lower surfaces 100, 200 comprises two raised portions 110, 120 and a central notch 130.
  • the two raised portions have a flat upper surface, are formed adjoining two opposing side peripheral side surfaces 310, 330, and extend along the entire length of the two opposing side peripheral side surfaces 310, 330.
  • the central notch 130 is a flat plane between the two raised portions, is formed by undercutting, and thus is depressed stepwisely from the raised portions.
  • the lower surface has an identical structure to that of the upper surface.
  • the central notch of the lower surface may extend either in a parallel or perpendicular direction to that of the upper surface.
  • FIG. 5 shows the blank insert before grinding, and examples of (a) a convex insert and (b) a concave insert obtained after grinding on the blank insert is finished.
  • These ground inserts have the same structure as the blank insert except for the ground portions (thickly painted portions in FIG. 6).
  • the two raised portions adjoin two opposing side peripheral side surfaces, and extend along the entire length of the two opposing side peripheral side surfaces, and the upper surface comprises concave or convex surfaces curved along the two opposing side peripheral side surfaces, and thus provides cutting edges having a concave or convex curvature.
  • the lower surface of these inserts has an identical structure to that of the upper surface. However, the central notch of the lower surface may extend either in a parallel or perpendicular direction to that of the upper surface.
  • the inserts according to the present invention are ground only on the raised portions, the volume removed during grinding is reduced and thus raw material can be saved, and the grinding burden is much reduced compared with the conventional inserts shown in FIG. 3.
  • the lower surface of the conventional insert is a flat surface and is provided with only two cutting edges
  • the lower surface of the inserts according to the present invention has the same structure as the upper structure, and thus provides four cutting edges of the same shape. Therefore, the durability of the inserts according to the present invention can be doubled compared to that of the conventional inserts.
  • the cutter insert pocket of the present invention comprises two side walls 640, 650 for supporting the peripheral side surfaces of the insert and one bottom wall 610-630 to support the lower surface of the insert, but the bottom wall has a protruded contact portion in the form of a flat plane corresponding to the central notch and depressed receiving portions 610,620 for receiving the raised portions of the insert.
  • the central notch of the insert and the protruded contact portion 630 of the cutter pocket are both flat and are in surface contact with each other, providing a support force in a radial direction.
  • the receiving portions 610,620 of the cutter pocket receive the raised portions of the insert, but are furnished with a sufficiently depressed space so as not to touch the cutting edges of the insert, so that it can receive raised portions of various shapes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

La présente invention concerne un insert présentant des surfaces supérieure et inférieure jointes par des surfaces latérales périphériques, qui comporte un trou traversant qui s'étend entre les surfaces supérieure et inférieure, chacune des surfaces supérieure et inférieure comprenant deux parties saillantes et une encoche centrale. Les deux parties saillantes adjoignent deux surfaces latérales périphériques opposées, et s'étendent le long de la totalité de la longueur des deux surfaces latérales périphériques opposées, et la surface supérieure comprend des surfaces concaves ou convexes qui sont incurvées le long des deux surfaces latérales périphériques opposées. L'encoche centrale est formée comme un plan plat entre les deux parties saillantes. Les inserts selon la présente invention sont meulés de telle sorte qu'un volume moindre est perdu pendant le meulage et donc une économie de matière première est réalisée. En outre, la charge de meulage est nettement réduite comparativement à des inserts conventionnels, et la durée de service peut être accrue.
EP09826253A 2008-11-17 2009-11-10 Insert d'ébauche, et insert et dispositif de coupe utilisant celui-ci Withdrawn EP2358493A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080114226A KR101017105B1 (ko) 2008-11-17 2008-11-17 인서트 및 이를 이용한 커터
PCT/KR2009/006561 WO2010056021A2 (fr) 2008-11-17 2009-11-10 Insert d'ébauche, et insert et dispositif de coupe utilisant celui-ci

Publications (2)

Publication Number Publication Date
EP2358493A2 true EP2358493A2 (fr) 2011-08-24
EP2358493A4 EP2358493A4 (fr) 2012-08-22

Family

ID=42170505

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09826253A Withdrawn EP2358493A4 (fr) 2008-11-17 2009-11-10 Insert d'ébauche, et insert et dispositif de coupe utilisant celui-ci

Country Status (7)

Country Link
EP (1) EP2358493A4 (fr)
JP (2) JP2012506780A (fr)
KR (1) KR101017105B1 (fr)
CN (1) CN102209601A (fr)
BR (1) BRPI0921012A2 (fr)
WO (1) WO2010056021A2 (fr)
ZA (1) ZA201103257B (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BR112014017858B1 (pt) * 2012-01-19 2021-02-09 Loram Maintenance Of Way, Inc. método e aparelho para fresar uma faixa de linha férrea
KR101380884B1 (ko) * 2012-06-14 2014-04-02 한국야금 주식회사 양면형 절삭 인서트
DE102012108751A1 (de) * 2012-09-18 2014-03-20 Hartmetall-Werkzeugfabrik Paul Horn Gmbh Schneideinsatz und Werkzeug zur spanenden Bearbeitung eines Werkstücks
KR101471252B1 (ko) * 2012-09-27 2014-12-09 대구텍 유한회사 블랭크 인서트와 이를 이용한 절삭 인서트 및 커터
CN104903039B (zh) * 2012-12-27 2018-04-17 株式会社泰珂洛 切削刀片及刀头更换式旋转切削工具
WO2014174555A1 (fr) * 2013-04-26 2014-10-30 Sumitomo Electric Hardmetal Corp. Plaquette de coupe indexable, support de plaquette de coupe, outil de coupe, dispositif de tournage et procédé de tournage
EP2947204B1 (fr) * 2014-05-19 2017-01-11 Mevert Maschinenbau GmbH & Co.KG Dispositif mobile de fraisage de champignons de rails et procédé de changement de plaques de coupe dans le cadre d'un tel dispositif
DE102015216203A1 (de) * 2015-08-25 2017-03-02 Komet Group Gmbh Maschinenwerkzeug, insbesondere Reibwerkzeug zur Feinbearbeitung von Bohrungen
JP2017064869A (ja) * 2015-10-01 2017-04-06 京セラ株式会社 切削インサート、切削工具及びそれを用いた切削加工物の製造方法
EP3406378A1 (fr) * 2017-05-23 2018-11-28 Walter Ag Insert de découpe et outil de fraisage
WO2024002527A1 (fr) * 2022-06-28 2024-01-04 Seco Tools Ab Outil de coupe

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1253989A1 (fr) * 2000-02-12 2002-11-06 Sandvik AB Piece de coupe rapportee et outil de fraisage correspondant
US20060280567A1 (en) * 2005-06-13 2006-12-14 Craig Karen A Helical cutting insert with progressive cutting edge
WO2008073037A1 (fr) * 2006-12-12 2008-06-19 Sandvik Intellectual Property Ab Outil et plaquette de coupe pour usinage avec évacuation de copeaux

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2529700Y2 (ja) * 1990-10-22 1997-03-19 住友電気工業株式会社 スローアウェイチップ
JPH0680514U (ja) * 1992-10-22 1994-11-15 東芝タンガロイ株式会社 スローアウェイチップおよびスローアウェイカッタ
JPH1119817A (ja) * 1997-05-02 1999-01-26 Synx Kk スローアウェイ式のスカラップカッター
DE19927545A1 (de) 1999-06-16 2000-12-21 Sandvik Gmbh Schneideinsatz für Nockenwellenfräser und Scheibenfräser hierfür
DE10218630A1 (de) 2002-04-25 2003-11-06 Sandvik Ab Fräser mit Feineinstellung
IL182100A (en) 2007-03-21 2010-11-30 Taegutec India Ltd Cutting insert for a milling cutter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1253989A1 (fr) * 2000-02-12 2002-11-06 Sandvik AB Piece de coupe rapportee et outil de fraisage correspondant
US20060280567A1 (en) * 2005-06-13 2006-12-14 Craig Karen A Helical cutting insert with progressive cutting edge
WO2008073037A1 (fr) * 2006-12-12 2008-06-19 Sandvik Intellectual Property Ab Outil et plaquette de coupe pour usinage avec évacuation de copeaux

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2010056021A2 *

Also Published As

Publication number Publication date
KR101017105B1 (ko) 2011-02-25
KR20100055246A (ko) 2010-05-26
BRPI0921012A2 (pt) 2018-10-16
ZA201103257B (en) 2012-01-25
JP2012506780A (ja) 2012-03-22
WO2010056021A3 (fr) 2010-08-05
JP2015027732A (ja) 2015-02-12
EP2358493A4 (fr) 2012-08-22
CN102209601A (zh) 2011-10-05
WO2010056021A2 (fr) 2010-05-20

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