US3815191A - Chip-forming cutting tool - Google Patents

Chip-forming cutting tool Download PDF

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Publication number
US3815191A
US3815191A US00268690A US26869072A US3815191A US 3815191 A US3815191 A US 3815191A US 00268690 A US00268690 A US 00268690A US 26869072 A US26869072 A US 26869072A US 3815191 A US3815191 A US 3815191A
Authority
US
United States
Prior art keywords
chip
cutting
groove
cutting edge
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.)
Expired - Lifetime
Application number
US00268690A
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English (en)
Inventor
J Holma
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.)
Santrade Ltd
Original Assignee
Sandvik AB
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 Sandvik AB filed Critical Sandvik AB
Application granted granted Critical
Publication of US3815191A publication Critical patent/US3815191A/en
Assigned to SANTRADE LTD., A CORP. OF SWITZERLAND reassignment SANTRADE LTD., A CORP. OF SWITZERLAND ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: SANDVIK AKTIEBOLAG, A CORP. OF SWEDEN
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B23B27/143—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness characterised by having chip-breakers
    • 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
    • B23B27/04—Cutting-off tools
    • B23B27/045—Cutting-off tools with chip-breaking arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/32—Chip breaking or chip evacuation
    • B23B2200/323—Chip breaking or chip evacuation by chip breaking depressions
    • 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
    • Y10T407/00—Cutters, for shaping
    • Y10T407/24—Cutters, for shaping with chip breaker, guide or deflector
    • Y10T407/245—Cutters, for shaping with chip breaker, guide or deflector comprising concave surface in cutting face of tool
    • 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
    • Y10T407/25—Cutters, for shaping including cut off tool

Definitions

  • the cutting tool which provides this stiffened chip has a groove or con- UNITED STATES PATENTS cavity at the locus where the thickened portion of the 1,221.247 4/l9l7 Traylor 29/95 X chip i desk-mi 2,164,303 7/l939 Berg et al. 29/95 2,176,265 10/ 1939 Luers 29/95 5 Claims, 10 Drawing Figures CHIP-FORMING CUTTING TOOL
  • the present invention relates to a method of, and tools for, chip forming machining. In such operations the chipbreaking and the chip form are often of great importance for an uninterrupted production. Modern machines having high productivity thus make great demands upon good chip removal. Long uncontrolled chips can easily cause stoppages and rejections and involve also great risks of accidents. Therefore, the chipbreaking must be given great attention and must determine to a high degree the shaping of the cutting tools.
  • chip breakers shaped in different ways.
  • chip breakers older types consisting of cuts in the tool or of detachable chip breaker as well as newer types consisting for instance of chip breakers in hard metal inserts
  • newer types consisting for instance of chip breakers in hard metal inserts
  • chip breaking or chip formation is unsatisfactory and makes suitable or economically advantageous tools or methods impossible.
  • the new features of the invention are derived from the idea of attaining'satisfactory chip forming and a desirable separation course by means of a suitable stiffening of the very chip during the cutting thereof.
  • the invention also involves a cutting tool, which is provided with at least one cutting edge and connecting chiprespectively clearancefaces.
  • the tool is charac terized in that the chip face is provided with one or more grooves or cavities starting from the very cutting edge; meaning that 'also the cutting edge is provided with the mentioned grooves.
  • the longitudinal direction of the cavities should form a substantially right angle to the cutting edge, preferably an angle of 90 45.
  • a chip formed according to the method of the present invention obtains the earlier mentioned stiffening by means of one or more-beads or other localized thickenings being formed on the chip during the cutting thereof by the help of the mentioned grooves or cavities.
  • a thin plate may be stiffened by making a groove or bead, a so-called crease, in the plate.
  • a groove or bead a so-called crease
  • a surprising and favorable solution of long known difficult problems has thus now been foundl
  • the groove of the tool or the insert may be said to have the same task as for instance the groove roll of a creasing tool.
  • no additional tool is needed for the shaping in contrast to the normal conditions in creasing, but the chip is pressed against the groove in the tool by means of the cutting forces in the cutting operation and a head or crease is formed by'plastic deformation.
  • FIG. 1 an insert having chip breakers and grooves according to an embodiment of the invention
  • FIG. 2 a section along the line 2-2 in FIG. 1;
  • FIG. 3 the insert according to FIGS. 1 and 2 in engagement in milling and a resultant chip
  • FIG. 4 a cutting-off tool having a groove in the cutting edge and the chip face according to the invention
  • FIGS. 5, 6 and 7 show configurations of chips formed by a conventional insert for various values of cutting depth and feed/insert
  • FIGS. 8, 9 and 10 show configurations of chips formed by the insert of the present invention for the same values of cutting depth and feed/insert.
  • FIGS. 1 and 2 show an insert. 10 having a top face 20 and clearance faces 24, the intersections of the top and clearance faces forming cutting edges 19.
  • the chip breakers 11, formed on the top face of the insert extend along the edges 19 ofthe insert.
  • the insert is provided with grooves 12, situated adjacent the corners of the insert. It has been found suitable, as illustrated in FIG. 2, to form the groove 12 with cross-sectional area of a segment of a circle. Among other suitable forms may be mentioned a semicircular area form.
  • the groove may have uniform cross-section along its principal extension or longitudinal direction.
  • FIG. 3 there is shown an insert 13 of the same kind as illustrated in FIGS. 1 and 2, mounted in a milling cutter (schematically indicated) for face milling of a workpiece 14.
  • the cutting depth corresponds to the distance t.
  • a chip 15 obtained by such milling is characterized by the bead 16 formed in the chip at the groove 17 of the insert 13. Becauseof the cylindrical form given to the chipit can easier pass through the limited chip rooms, which often are the case for instance in milling tools. Larger cutting depths and feed are thus possible.
  • FIG. 4 there is shown a cut-off tool 18 in which the cutting edge 19 respectively chip face 20 are provided ing to the invention is formed by plastic deformation of the material on the chip face of the insert.
  • the chip deformation is often less in the bottom of the bead than in the part 22 of the chip lying abve the head.
  • the material reduction measured has usually been 5-25 percent depending upon the cutting data and the material of the workpiece.
  • the part of the chip lying below the bead is normally-dilated and obtains often a wedgeshaped appearance terminating in a point 23. At increased feed (thicker chip) this is more clearly seen.
  • chip-stiffening groove it sometimes is found to be advantageous to apply a chip-stiffening groove as near the corners of the insert of the outer borders of the cutting edge as possible, and in the case of face milling or the like as far down as possible towards the secondary cutting edges, i.e. the bottom or finishing cutting edges of the insert.
  • the strain upon the insert comers it has been found suitable in, for instance, milling to locate the groove about 2 millimeters, preferably 210.5 millimeters, from the secondary or finishing cutting edges of the insert.
  • the description in the following will mainly deal with applications of the invention in face milling of steel with indexable cutting inserts and in cut-off tools.
  • the invention may successfully be used in other kinds of cutting tools in cutting of different materials as for instance metals and plastics, the tools being made of among other materials cemented carbide, high speed steel or carbon steel.
  • Example 1 A standard indexable insert milling cutter for face milling with positive cutting angles has the following recommended cutting data:
  • the task was to increase the cutting field by providing the insert with chip breakers.
  • FIGS. 5-10 showthe obtained chip forms in milling with conventional inserts respectively inserts ac-' cording to the invention.
  • the chip obtained in this case a principally cylindrical form after the separation.
  • the separating also obtained a smaller and fairly constant radius of curvature and a greater relatively constant pitch.
  • the groove for stiffening the chip was advantageously so formed that its depth measured from the chip face was about 0.1-1.0 mm, preferably 0.3 mm.
  • the radius was between 0.5-5 mm, for instance about 2.5 mm, and the largest width of the groove was 0.5-5 mm, for instance about 2.3 mm.
  • Its length, measured from the cutting edge, was between 0.5-5 mm, for instance about 2 mm.
  • the inner limitation of the groove on the chip face was also formed with a radius of about 0.5-5 mm, for instance about 2.5 mm.
  • the groove formed an angle of i 15, for instance about 5, with the milled surface plane. Its distance from the nearest insert corner or secondary cutting edge, measured from the central longitudinal axis of the groove, was 0.5-5 mm preferably about 1.5-3 mm.
  • Example 11 A cut-off tool consisting of a relatively narrow and thin insert, mechanically clamped in a holder shaft, was provided with a centrally situated groove on the chip face of the tool perpendicular to the cutting edge.
  • the length of the cutting edge was about 4 mm
  • the groove was formed by means of spherical grinding point so that the cross-section had the principal form of a segment of a circle with a depth below the chip face of about 0.05-0.5 mm at the cutting edge, usually 0.1-0.2 mm, and a width of 0.5-2 mm, suitably about 1.0-1.5 mm.
  • the groove was formed with about +25 +15 cutting angle and obtained by this formation also a widening of the width inwards measured from the cutting edge.
  • the length of the groove was between 0.5-5 mm, for instance about 2 mm and its largest width, in its inner part, was about 0.5-3 mm, suitably about 2 mm.
  • the inner limitation of the groove was rounded because of the way of preparation (radius of thegrinding sphere was in the example 2 mm).
  • the stiffening has been obtained by giving the chip a sinuosity in the side turned from the cutting edge and preferably an indentation on the opposite side.
  • the chip face of the tool has been provided with one or more elevations, extending to the cutting edge, instead of grooves as hereinbefore described.
  • Tools used in performing the invented method shall preferably have a straight shaped cutting edge to give a favorable chip form.
  • descreased tendency of unfavorable coating and loose cutting edge formation on the tool may be mentioned descreased tendency of unfavorable coating and loose cutting edge formation on the tool.
  • Another advantage is the decreased friction against the surrounding surfaces obtained by a chip formed according to the invention also in other conditions than in the last-mentioned example.
  • milling with limited chip room where, for a chip formed according to the invention, the contact with the chip room is limited to the bead or the sinosity instead of a contact of the whole chip against the chip room.
  • a chip forming cutting tool forming a chip having a longitudinally extending stiffened portion thereby decreasing from normal the radius of curvature of the chip, the tool having a top face and at least one clearance face, the intersection between said faces forming an elongated cutting'edge, a chip breaker groove in said top face spaced from and running along said cutting edge, an additional groove in said top face running from said cutting edge to said chip breaker groove, said additional groove being spaced from an end of said elongated cutting edge.
  • a chip forming cutting tool according to claim 1, wherein the intersection of the chip breaker groove with said top face closest to said cutting edge is substantially parallel thereto.
  • a chip forming cutting tool according to claim 1, wherein the tool is a polygonal insert, each of whose sides is a cutting edge and each cutting edge is provided with a chip breaker groove and additional groove as set forth.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)
  • Cutting Tools, Boring Holders, And Turrets (AREA)
US00268690A 1971-07-07 1972-07-03 Chip-forming cutting tool Expired - Lifetime US3815191A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7108780A SE377771B (da) 1971-07-07 1971-07-07

Publications (1)

Publication Number Publication Date
US3815191A true US3815191A (en) 1974-06-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
US00268690A Expired - Lifetime US3815191A (en) 1971-07-07 1972-07-03 Chip-forming cutting tool

Country Status (5)

Country Link
US (1) US3815191A (da)
JP (1) JPS5725321B1 (da)
FR (1) FR2145291A5 (da)
GB (1) GB1392396A (da)
SE (1) SE377771B (da)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3885281A (en) * 1974-06-10 1975-05-27 Iscar Ltd Cutting insert with chip control
US3973308A (en) * 1974-04-24 1976-08-10 Sandvik Aktiebolag Cutting tool
US3975809A (en) * 1975-06-13 1976-08-24 Kennametal Inc. Cutting insert, especially for milling operations
DE2845211A1 (de) * 1977-10-17 1979-04-19 Ngk Spark Plug Co Abwerfspitze eines drehbankschneidwerkzeugs
US4188162A (en) * 1977-12-27 1980-02-12 The Valeron Corporation Indexable insert drill
US4215957A (en) * 1977-09-17 1980-08-05 Sandvik Aktiebolag Cutting insert for chipforming machine
DE3044791A1 (de) * 1979-12-04 1981-08-27 Iscar Ltd., Nahariya Spanbrecheranordnung fuer schneideinsaetze
US4340325A (en) * 1980-12-23 1982-07-20 General Electric Co. Cutting insert for deep grooving
US4629372A (en) * 1981-02-02 1986-12-16 Manchester Tool Company Chip-controlling insert
US4880338A (en) * 1988-12-07 1989-11-14 Gte Valenite Corporation Cutting insert
US4992007A (en) * 1987-10-14 1991-02-12 Iscar Ltd. Cutting insert and a tool holder therefor
US5067858A (en) * 1991-04-10 1991-11-26 Cook Warren R Multiple faced cutter insert
US5294219A (en) * 1990-10-18 1994-03-15 Mitsubishi Materials Corporation Ball end mill
US5302060A (en) * 1990-12-19 1994-04-12 Sandvik Ab Drilling tool and insert therefor
US5423639A (en) * 1992-10-28 1995-06-13 Sandvik Ab Cutting insert for chipforming machining of workpieces
WO2000066302A1 (de) * 1999-05-03 2000-11-09 Kennametal Inc. Schneideinsatz, insbesondere wendeplatte
EP1123765A1 (en) * 2000-01-31 2001-08-16 Ngk Spark Plug Co., Ltd Cut-off insert
US6336776B1 (en) * 1999-12-16 2002-01-08 Valenite Inc. Milling cutter and insert therefor
EP1219369A1 (en) * 2000-12-28 2002-07-03 Ngk Spark Plug Co., Ltd. Cutting tool and indexable insert therefor
US20030031520A1 (en) * 2000-04-13 2003-02-13 Wofgang Hintze Cutting insert
WO2004035257A2 (en) 2002-10-18 2004-04-29 Manchester Tool Company Tool holder and metal cutting insert with chip breaking surfaces
US20060269367A1 (en) * 2003-09-27 2006-11-30 Franz Havrda Cutting tool, particularly for end-cut and longitudinal turning and for groove cutting
US20090220311A1 (en) * 2008-02-29 2009-09-03 National University Corporation Nagoya University Cutting tool with chip guiding function and cutting method therefor
US20090220312A1 (en) * 2008-02-29 2009-09-03 National University Corporation Nagoya University Machine tool with chip processing function
US9796024B2 (en) 2014-04-07 2017-10-24 Kennametal India Limited Cutting insert with enhanced chip breaking performance

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE448431B (sv) * 1985-07-03 1987-02-23 Santrade Ltd Vendsker for spanavskiljande bearbetning
DE8913805U1 (de) * 1989-11-23 1991-03-21 Hertel AG Werkzeuge + Hartstoffe, 8510 Fürth Stechdrehwerkzeug
EP0798065A3 (en) * 1996-03-28 1998-03-11 Mitsubishi Materials Corporation Drill and throwaway tip
CN106475584B (zh) * 2016-11-11 2018-10-09 贵州大学 一种切削高温合金gh4169的微结构硬质合金车刀片
CN106493396B (zh) * 2016-11-11 2018-10-09 贵州大学 一种切削304不锈钢的微结构硬质合金车刀片
CN106670513B (zh) * 2016-11-11 2018-10-26 贵州大学 一种切削211z铝合金的微结构硬质合金车刀片
CN106493395B (zh) * 2016-11-11 2018-10-09 贵州大学 一种切削高强度合金钢40CrMnMo的硬质合金微槽车刀

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1221247A (en) * 1915-11-27 1917-04-03 Samuel W Traylor Drilling, reaming, and centering machine.
US2164303A (en) * 1937-12-08 1939-07-04 Alfred J Berg Tool for cutting or turning
US2176265A (en) * 1938-01-28 1939-10-17 John M Luers Tool
US2211760A (en) * 1937-12-08 1940-08-20 Alfred J Berg Spring and method of making the same
US2677170A (en) * 1951-06-16 1954-05-04 Robert J Kuns Cutting bit
US3395434A (en) * 1966-06-01 1968-08-06 Sandvikens Jernverks Ab Cutting insert for chip cutting machining

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4815279B1 (da) * 1968-02-28 1973-05-14

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1221247A (en) * 1915-11-27 1917-04-03 Samuel W Traylor Drilling, reaming, and centering machine.
US2164303A (en) * 1937-12-08 1939-07-04 Alfred J Berg Tool for cutting or turning
US2211760A (en) * 1937-12-08 1940-08-20 Alfred J Berg Spring and method of making the same
US2176265A (en) * 1938-01-28 1939-10-17 John M Luers Tool
US2677170A (en) * 1951-06-16 1954-05-04 Robert J Kuns Cutting bit
US3395434A (en) * 1966-06-01 1968-08-06 Sandvikens Jernverks Ab Cutting insert for chip cutting machining

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973308A (en) * 1974-04-24 1976-08-10 Sandvik Aktiebolag Cutting tool
US3885281A (en) * 1974-06-10 1975-05-27 Iscar Ltd Cutting insert with chip control
US3975809A (en) * 1975-06-13 1976-08-24 Kennametal Inc. Cutting insert, especially for milling operations
US4215957A (en) * 1977-09-17 1980-08-05 Sandvik Aktiebolag Cutting insert for chipforming machine
DE2845211A1 (de) * 1977-10-17 1979-04-19 Ngk Spark Plug Co Abwerfspitze eines drehbankschneidwerkzeugs
US4188162A (en) * 1977-12-27 1980-02-12 The Valeron Corporation Indexable insert drill
DE3044791A1 (de) * 1979-12-04 1981-08-27 Iscar Ltd., Nahariya Spanbrecheranordnung fuer schneideinsaetze
US4340325A (en) * 1980-12-23 1982-07-20 General Electric Co. Cutting insert for deep grooving
US4629372A (en) * 1981-02-02 1986-12-16 Manchester Tool Company Chip-controlling insert
US4992007A (en) * 1987-10-14 1991-02-12 Iscar Ltd. Cutting insert and a tool holder therefor
US4880338A (en) * 1988-12-07 1989-11-14 Gte Valenite Corporation Cutting insert
US5294219A (en) * 1990-10-18 1994-03-15 Mitsubishi Materials Corporation Ball end mill
US5302060A (en) * 1990-12-19 1994-04-12 Sandvik Ab Drilling tool and insert therefor
US5067858A (en) * 1991-04-10 1991-11-26 Cook Warren R Multiple faced cutter insert
US5423639A (en) * 1992-10-28 1995-06-13 Sandvik Ab Cutting insert for chipforming machining of workpieces
US6676339B2 (en) 1999-05-03 2004-01-13 Kennametal Inc. Indexable cutting insert for machining workpieces
WO2000066302A1 (de) * 1999-05-03 2000-11-09 Kennametal Inc. Schneideinsatz, insbesondere wendeplatte
US6336776B1 (en) * 1999-12-16 2002-01-08 Valenite Inc. Milling cutter and insert therefor
EP1123765A1 (en) * 2000-01-31 2001-08-16 Ngk Spark Plug Co., Ltd Cut-off insert
US20030031520A1 (en) * 2000-04-13 2003-02-13 Wofgang Hintze Cutting insert
EP1219369A1 (en) * 2000-12-28 2002-07-03 Ngk Spark Plug Co., Ltd. Cutting tool and indexable insert therefor
SG96672A1 (en) * 2000-12-28 2003-06-16 Ngk Spark Plug Co Cutting tool and indexiable insert therefor
US6843620B2 (en) 2000-12-28 2005-01-18 Ngk Spark Plug Co., Ltd. Cutting tool and indexiable insert therefor
WO2004035257A2 (en) 2002-10-18 2004-04-29 Manchester Tool Company Tool holder and metal cutting insert with chip breaking surfaces
US7883300B1 (en) 2002-10-18 2011-02-08 Kennametal Inc. Tool holder and metal cutting insert with chip breaking surfaces
US20060269367A1 (en) * 2003-09-27 2006-11-30 Franz Havrda Cutting tool, particularly for end-cut and longitudinal turning and for groove cutting
US7510355B2 (en) * 2003-09-27 2009-03-31 Kennametal Inc. Cutting tool, particularly for end-cut and longitudinal turning and for groove cutting
US20090220311A1 (en) * 2008-02-29 2009-09-03 National University Corporation Nagoya University Cutting tool with chip guiding function and cutting method therefor
US20090220312A1 (en) * 2008-02-29 2009-09-03 National University Corporation Nagoya University Machine tool with chip processing function
US9796024B2 (en) 2014-04-07 2017-10-24 Kennametal India Limited Cutting insert with enhanced chip breaking performance

Also Published As

Publication number Publication date
JPS5725321B1 (da) 1982-05-28
FR2145291A5 (da) 1973-02-16
SE377771B (da) 1975-07-28
GB1392396A (en) 1975-04-30

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