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WO2010058870A1 - Insert de coupe - Google Patents

Insert de coupe Download PDF

Info

Publication number
WO2010058870A1
WO2010058870A1 PCT/KR2008/006900 KR2008006900W WO2010058870A1 WO 2010058870 A1 WO2010058870 A1 WO 2010058870A1 KR 2008006900 W KR2008006900 W KR 2008006900W WO 2010058870 A1 WO2010058870 A1 WO 2010058870A1
Authority
WO
WIPO (PCT)
Prior art keywords
face
cutting
upper face
region
cutting insert
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.)
Ceased
Application number
PCT/KR2008/006900
Other languages
English (en)
Inventor
Hong Sik Park
Jang Hyuk Joo
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
Priority to CN2008801320584A priority Critical patent/CN102223974A/zh
Priority to PCT/KR2008/006900 priority patent/WO2010058870A1/fr
Priority to EP08878290A priority patent/EP2358491A1/fr
Publication of WO2010058870A1 publication Critical patent/WO2010058870A1/fr
Priority to US13/112,633 priority patent/US20110222974A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
    • B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
    • B23B27/141—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/08—Rake or top surfaces
    • B23B2200/086—Rake or top surfaces with one or more grooves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
    • B23B2222/36—Nickel chrome alloys, e.g. Inconel®
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
    • B23B2222/80—Stainless steel
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2250/00—Compensating adverse effects during turning, boring or drilling
    • B23B2250/12—Cooling and lubrication
    • 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
    • Y10T407/23—Cutters, for shaping including tool having plural alternatively usable cutting edges
    • Y10T407/235—Cutters, for shaping including tool having plural alternatively usable cutting edges with integral chip breaker, guide or deflector
    • 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
    • Y10T82/00—Turning
    • Y10T82/10—Process of turning

Definitions

  • the present invention relates to a cutting insert, more particularly, to a cutting insert having a structure by which cutting heat generated during a cutting machining process be effectively radiated and a cutting fluid can be flowed smoothly.
  • FIG. 1 is a perspective view of a conventional tool holder utilized for a cutting machining process
  • a tool holder 10 for a cutting machining comprises a hardmetal sheet 15, a pocket 12 and 13 to which a cutting insert 20 is mounted and a shank part 11.
  • a chip is developed in a peripheral portion of a workpiece and extends obliquely upwards from the cutting edge of the cutting insert 20.
  • the actual cutting of the chip takes place in a primary shear zone of the cutting insert 20.
  • the cutting insert 20 can be easily deteriorated, so the heat causes a reduction of service life time of the cutting insert 20 as well as a lowering of a machining quality.
  • the present invention is conceived to solve the above problems of the cutting insert for the cutting machining process, an objective of the present invention is to provide a cutting insert which can radiate effectively heat generated during the cutting machining process.
  • Another object of the present invention is to provide a cutting insert having a structure by which a friction force and a contact ration between a tool holder and a contacting surface thereof can be enhanced and cutting fluid can be flowed smoothly.
  • a cutting insert comprises an upper face and a lower face being opposite to each other, a plurality of side faces connecting the upper face and the lower face and a through hole passing through the upper face and the lower face, the upper face being divided into a periphery region disposed adjacently to cutting edges formed by the upper face and the side faces, and a central protruded region disposed between the through hole and the periphery region and surrounding the through hole, the central protruded region being placed higher than the edges.
  • the periphery region is formed along all the cutting edges and comprising an descent face inclined downward from the cutting edge to the central protruded region and an ascent face inclined upward toward the central protruded region, and a plurality of grooves are formed on the central protruded region of the upper face, the groove being formed such that both ends of respective groove are directed to the adjacent cutting edges.
  • the periphery region may further comprise a bottom face formed between the descent face and the ascent face, and the groove can be extended to the ascent face and the bottom face of the periphery region, and it is preferable that the groove has a width which is smaller than a distance between the neighboring grooves.
  • the cutting insert according to the present invention is advantageous in that it is possible to radiate heat effectively radiate without weakening the strength of the cutting edges.
  • Fig. 1 is a perspective view of a conventional tool holder utilized for a cutting machining process.
  • FIG. 2 is a perspective view of a cutting insert according to the first embodiment of the present invention.
  • Fig. 3 is a sectional view taken along the line A-A of Fig. 2.
  • Fig. 4 is a sectional view taken along the line B-B of Fig. 2.
  • FIG. 5 is a perspective view of a cutting insert according to the second embodiment of the present invention.
  • Fig. 6 is a sectional view taken along the line C-C of Fig. 5.
  • Fig. 7 is a sectional view taken along the line D-D of Fig. 5.
  • FIG. 2 is a perspective view of a cutting insert according to the first embodiment of the present invention
  • Fig. 3 is a sectional view taken along the line A-A of Fig. 2
  • Fig. 4 is a sectional view taken along the line B-B of Fig. 2.
  • FIG. 3 and Fig. 4 are perspective views taken along the line B-B of Fig. 2.
  • a cutting insert 100 has an upper face 150 and a lower face 160 being opposite to each other, four (4) side faces 110, 120, 130 and 140 connecting the upper face 150 and the lower face 160.
  • a through hole 180 passes through each central part of the upper face 150 and the lower face 160 and acts as a clamping hole into which a lever or a clamping screw (not shown) is screwed when the cutting insert 100 is mounted to a tool holder (10 in Fig. 1) for a cutting machining.
  • the upper face 150 and the lower face 160 are flat faces placed on a pocket of the tool holder and are substantially parallel with each other. Also, four side faces 110, 120, 130 and 140 of the cutting insert 100 are normal to the upper face 105 and the lower face 106.
  • upper and lower ends 111-1, 121-1, 131-1, 141-1 and 131-2, 141-2 (here, a lower end of one side face 120 are not shown in the drawings) of four side faces 110, 120, 130 and 140 act as main cutting edges (hereinafter, the, upper and lower ends 111-1, 121-1, 131-1, 141-1 and 131-2, 141-2 are referred to as "cutting edges").
  • the upper face 150 is divided into a periphery region 151 adjacent to the cutting edges 111-1, 121-1, 131-1 and 141-1 and a central protruded region 152 disposed between the through hole 180 and the periphery region 151 and surrounding the through hole 180.
  • the periphery region 151 is formed along all the cutting edges 111-1, 121-1, 131-1 and 141-1 and may comprises an decent face 151-1 inclined downward from each of the cutting edges 111-1, 121-1, 131-1 and 141-1 toward the central protruded region 152, a bottom face 151-2 and an ascent face 151-3 inclined upward toward the central protruded region 152.
  • the central protruded region 152 is placed higher than the edges 111-1, 121-1, 131-1 and 141-1 ("h" in Fig. 2). That is, a thickness between the central protruded region 152 formed on the upper face 150 and the lower face 160 is larger than a thickness between the cutting edge (for example, 111-1) formed on the upper face 150 and the cutting edge (for example, 111-2) formed on the lower face 160.
  • a plurality of grooves 190 are formed on the central protruded region 152 on the upper face 150 surrounding the through hole 180. As compared with a flat surface, a surface area of the central protruded region 152 on which the plurality of grooves 190 is remarkably increased.
  • the grooves are not formed on the ascent face 151-3 and the bottom face 151-2 of the periphery region 151.
  • a depth and a location of each of the grooves 190 formed on the central protruded region 152 are not limited. As shown in Fig. 2, however, it is preferable that the grooves 190 are uniformly disposed on the central protruded region 152 surrounding the through hole 180 in order to radiate the heat more effectively.
  • a plurality of grooves 190 are formed on only the central protruded region 152, and no groove is formed on the periphery region 151 adjacent to the cutting edges 1111-, 121-1, 131-1 and 141-1.
  • a heat-radiating effect i.e., cooling effect
  • the cutting insert 100 coupled to the tool holder through a clamping screw can be shaken in the pocket of the tool holder.
  • the cutting insert 100 is shaken (vibrated) in the pocket due to the above conditions, it is difficult to machine precisely the workpiece.
  • a plurality of grooves 190 which are not in contact with a bottom surface of the pocket of the tool holder can minimize an influence caused by a partial non-flat upper face 150 or the micro protrusions/recesses formed on the upper face. Consequently, it is possible to maximize a contact between the bottom surface of the pocket of the tool holder and the upper face 150.
  • a width of the groove 190 is less than a distance between the adjacent two grooves 190.
  • each groove 190 is formed such that both ends of the groove are directed to the neighboring periphery region 151, that is, the cutting edges 111-1, 121-1, 131-1 and 141-1.
  • the workpiece is moved along the ascent face 151-3 of the periphery region 151, and a shear stress is generated on the chip reached a border portion between the groove 190 and the ascent face 151-3 of the periphery region 151. Accordingly, numerous corrugations are formed on the chip reached an area at which the groove 190 is initiated so that the chip can be broken easily into small-sized chip pieces.
  • a function of the cutting fluid flowed in the groove 190 as described above is to eliminate a resistance factor having an effect on a discharge of the chip, and so it is possible to increase a service life time of the cutting insert 100 and obtain a machined article having the excellent quality.
  • FIG. 5 is a perspective view of a cutting insert according to the second embodiment of the present invention
  • Fig. 6 is a sectional view taken along the line C-C of Fig. 5
  • Fig. 7 is a sectional view taken along the line D-D of Fig. 5.
  • the overall structure of the cutting insert 200 according to the present embodiment is the same as that of the cutting insert 100 according to the first embodiment shown in Fig. 2, Fig. 3 and Fig. 4.
  • the grooves 190 are formed on only the central protruded region 152 of the upper face 150.
  • a plurality of first and second grooves 291 and 292 are formed on an entire surface of an upper face 250, that is, a periphery region 251 (in particular, a bottom face 251-2 and an ascent face 251-3) adjacent to cutting edges 211-1, 221-1, 231-1 and 241-1 and a central protruded region 252 disposed between the periphery region 251 and a through hole 280 and surrounding the through hole 280.
  • each end of the second groove 292 formed on the central protruded region 252 is communicated with to one end of the first groove 291 formed on the periphery region 251.
  • the other end (which does not correspond to the second groove 292) of the first groove 291 corresponds to the adjacent cutting edge 211-1, 221-1, 231-1 or 241-1.
  • the first groove 291 is not formed on the descent face 251-1 of the periphery region 251.
  • the first groove 291 is formed on a bottom face and the ascent face of the periphery region 251 adjacent to the cutting edge 211-1, 221-1, 231-1 or 241-1 and one end the first groove is communicated with the second groove 292 of the central protruded region 252.
  • the grooves 190 are formed on all regions. Due to the above structure, the cooling effect obtained by the grooves can be maximized without weakening the strength of the cutting edges 211-1, 221-1, 231-1 and 241-1.
  • a function of respective groove is the same as those of groove 190 formed on the upper face 150 of the cutting insert 100 according to the first embodiment. Accordingly, the detail description thereon is omitted.
  • the present invention is not limited thereto. That is, it will be apparent that the lower face (for example, 160 in Fig. 2) has the structure which is the same as that of the upper face (for example, 150 in Fig. 2) in order to utilize the edges (for example, 111-2, 131-2, 141-2 in Fig. 2 and Fig. 3) of the lower face (for example, 160 in Fig. 2) as well as the edges (for example, 111-1, 121-1, 131-1, 141-1 in Fig. 2) of the upper face (for example, 150 in Fig. 2) as the cutting edges.
  • the lower face has the structure which is the same as that of the upper face (for example, 150 in Fig. 2) in order to utilize the edges (for example, 111-2, 131-2, 141-2 in Fig. 2 and Fig. 3) of the lower face (for example, 160 in Fig. 2) as well as the edges (for example, 111-1, 121-1, 131-1, 141-1 in Fig. 2) of the upper face (for example, 150 in

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

La présente invention porte sur un insert de coupe qui est capable de rayonner efficacement de la chaleur générée pendant le processus d'usinage de découpage et ayant une structure grâce à laquelle une surface suffisante est en contact avec un porte-outil et un fluide de coupe peut être amené à s'écouler régulièrement. L'insert de coupe selon la présente invention comporte une face supérieure et une face inférieure qui sont opposées l'une à l'autre, une pluralité de faces latérales reliant la face supérieure et la face inférieure et un trou traversant qui passe à travers la face supérieure et la face inférieure, la face supérieure étant divisée en une région de périphérie disposée de façon adjacente à des arêtes de coupe formées par la face supérieure et les faces latérales, et une région en saillie centrale disposée entre le trou traversant et la région de périphérie et entourant le trou traversant, la région en saillie centrale étant placée plus haut que les  arêtes. Ici, la région de périphérie est formée le long de toutes les arêtes de coupe et comporte une face de descente inclinée vers le bas, de l'arête de coupe à la région en saillie centrale, une face de fond et une face de montée inclinée vers le haut, de la face de fond à la région en saillie centrale, et une pluralité de rainures sont formées sur la région en saillie centrale de la face supérieure, chaque rainure étant formée de telle sorte que les deux extrémités de la rainure respective sont dirigées vers les arêtes de coupe adjacentes.
PCT/KR2008/006900 2008-11-21 2008-11-21 Insert de coupe Ceased WO2010058870A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN2008801320584A CN102223974A (zh) 2008-11-21 2008-11-21 切削刀具
PCT/KR2008/006900 WO2010058870A1 (fr) 2008-11-21 2008-11-21 Insert de coupe
EP08878290A EP2358491A1 (fr) 2008-11-21 2008-11-21 Insert de coupe
US13/112,633 US20110222974A1 (en) 2008-11-21 2011-05-20 Cutting Insert Having Grooves Formed Between Adjacent Cutting Edges

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2008/006900 WO2010058870A1 (fr) 2008-11-21 2008-11-21 Insert de coupe

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/112,633 Continuation-In-Part US20110222974A1 (en) 2008-11-21 2011-05-20 Cutting Insert Having Grooves Formed Between Adjacent Cutting Edges

Publications (1)

Publication Number Publication Date
WO2010058870A1 true WO2010058870A1 (fr) 2010-05-27

Family

ID=42198306

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/006900 Ceased WO2010058870A1 (fr) 2008-11-21 2008-11-21 Insert de coupe

Country Status (4)

Country Link
US (1) US20110222974A1 (fr)
EP (1) EP2358491A1 (fr)
CN (1) CN102223974A (fr)
WO (1) WO2010058870A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10076788B2 (en) 2014-05-20 2018-09-18 Iscar, Ltd. Cutting insert with chip-control arrangement
US10710167B2 (en) * 2017-08-02 2020-07-14 Iscar, Ltd. Negative finish turning insert with chip forming arrangement
CN108971885B (zh) * 2018-09-29 2024-01-23 山东华云机电科技有限公司 一种加工工件具有倒凹结构特征的超声金属表面加工刀具及其应用
EP3851231A1 (fr) * 2020-01-17 2021-07-21 Seco Tools Ab Insert de coupe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0534494A1 (fr) * 1991-09-30 1993-03-31 Valenite Inc. Plaquette de coupe
EP0730925A1 (fr) * 1995-03-10 1996-09-11 Valenite Inc. Plaquette de coupe à grande vitesse avec brise copeaux
EP0693012B1 (fr) * 1993-04-05 1998-01-28 Sandvik Aktiebolag Plaquette de coupe a evacuation amelioree des copeaux
WO2007104275A1 (fr) * 2006-03-10 2007-09-20 Kennametal Widia Produktions Gmbh & Co.Kg Insert de coupe et outil de fraisage

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2164303A (en) * 1937-12-08 1939-07-04 Alfred J Berg Tool for cutting or turning
US2322894A (en) * 1939-06-29 1943-06-29 Rustless Iron & Steel Corp Twist drill
US3947937A (en) * 1973-11-16 1976-04-06 Karl Hertel Control groove in cutting elements for metal working tools
DE2544991C2 (de) * 1975-10-08 1981-06-04 Hertel, Karl, 8500 Nürnberg Schneideinsatz für die spanabhebende Bearbeitung
SE469215B (sv) * 1989-06-22 1993-06-07 Seco Tools Ab Skaer vars spaanformande yta aer foersedd med urtagningar vinklade mot skaereggen.
US5192171A (en) * 1991-01-07 1993-03-09 Gte Valenite Corporation Chip control insert
US5503507A (en) * 1994-03-04 1996-04-02 Valenite Inc. High speed cutting insert with improved chip groove
SE509362C2 (sv) * 1994-03-18 1999-01-18 Sandvik Ab Diamantbelagd kropp
JP4654962B2 (ja) * 2001-11-20 2011-03-23 三菱マテリアル株式会社 スローアウェイチップ
SE525712C2 (sv) * 2002-06-26 2005-04-12 Sandvik Ab Skär för borrar med spånbrytare

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0534494A1 (fr) * 1991-09-30 1993-03-31 Valenite Inc. Plaquette de coupe
EP0693012B1 (fr) * 1993-04-05 1998-01-28 Sandvik Aktiebolag Plaquette de coupe a evacuation amelioree des copeaux
EP0730925A1 (fr) * 1995-03-10 1996-09-11 Valenite Inc. Plaquette de coupe à grande vitesse avec brise copeaux
WO2007104275A1 (fr) * 2006-03-10 2007-09-20 Kennametal Widia Produktions Gmbh & Co.Kg Insert de coupe et outil de fraisage

Also Published As

Publication number Publication date
EP2358491A1 (fr) 2011-08-24
US20110222974A1 (en) 2011-09-15
CN102223974A (zh) 2011-10-19

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