EP3737522A1 - Insert de coupe pour l'usinage par enlèvement de copeaux - Google Patents

Insert de coupe pour l'usinage par enlèvement de copeaux

Info

Publication number
EP3737522A1
EP3737522A1 EP19707689.6A EP19707689A EP3737522A1 EP 3737522 A1 EP3737522 A1 EP 3737522A1 EP 19707689 A EP19707689 A EP 19707689A EP 3737522 A1 EP3737522 A1 EP 3737522A1
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting insert
insert according
cutting edge
notch
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.)
Pending
Application number
EP19707689.6A
Other languages
German (de)
English (en)
Inventor
Quanliang ZHAO
Jose AGUSTIN-PAYA
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.)
ZCC Cutting Tools Europe GmbH
Original Assignee
ZCC Cutting Tools Europe GmbH
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 ZCC Cutting Tools Europe GmbH filed Critical ZCC Cutting Tools Europe GmbH
Publication of EP3737522A1 publication Critical patent/EP3737522A1/fr
Pending 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
    • B23B27/145—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness characterised by having a special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/04—Overall shape
    • B23B2200/0447—Parallelogram
    • B23B2200/0452—Parallelogram rounded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/04—Overall shape
    • B23B2200/049—Triangular
    • B23B2200/0495—Triangular rounded
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/20—Top or side views of the cutting edge
    • B23B2200/201—Details of the nose radius and immediately surrounding area
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/20—Top or side views of the cutting edge
    • B23B2200/204—Top or side views of the cutting edge with discontinuous cutting edge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2200/00—Details of cutting inserts
    • B23B2200/20—Top or side views of the cutting edge
    • B23B2200/208—Top or side views of the cutting edge with wiper, i.e. an auxiliary cutting edge to improve surface finish
    • 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
    • B23B2200/321—Chip breaking or chip evacuation by chip breaking projections
    • 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
    • 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
    • B23C2200/081—Rake or top surfaces with projections
    • 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
    • B23C2200/201—Details of the nose radius and immediately surrounding areas
    • 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

Definitions

  • the invention relates to a cutting insert for the machining of workpieces, consisting of a polygonal body with a rake face, a spaced therefrom bearing surface and free surfaces which connect the chip and the support surface together and form together with the rake face respective cutting edges, wherein the cutting edges at least one rounded
  • Cutting edge having - viewed in a plan view of the rake face - a central region with a first radius of curvature and each laterally adjoining Schleppsch areas which have a linear or have a larger radius of curvature has.
  • the main application of the mentioned cutting inserts is the plan and longitudinal turning of workpieces.
  • corner radius of a cutting insert of considerable importance for the life of the tool and the surface quality of the machined with the cutting insert workpiece.
  • a larger corner radius distributes the cutting work over a longer part of the cutting edge, which improves the working life and also allows the resulting heat to be better dissipated.
  • the quality of the turned surface of a workpiece is essentially the combination of the tool feed, the depth of cut and the corner radius as well as the
  • Cutting insert with a cutting edge area to use which have a first radius of curvature and on both sides adjoining second area with a second, larger radius of curvature.
  • the cutting insert should be aligned to a workpiece so that the tangent of at least one intermediate point on the second region with the larger radius of curvature parallel to
  • Feed direction is such that the second region having a larger radius of curvature exerts a kind of peeling effect. It is an object of the present invention to improve the cutting insert mentioned above, in particular to make it applicable also for the average cutting of 1, 5 mm up to 6 mm, preferably 2 mm to 3 mm.
  • At least one of the cutting edge regions, which adjoin directly to the aforementioned drag cutting region, is provided with a notch.
  • Cutting insert corner radii are between 0.02 mm and 2.4 mm, in particular between 0.4 mm and 0.8 mm.
  • Schlepp Blood Finees is considerably larger and can preferably
  • Ri Ri be, for example, between 1 mm and 28 mm, preferably between 4 mm and 19 mm.
  • the secant which is formed by a connection of the end points of the drag blade with a radius R2, according to the invention has a length of up to 1 mm. It is also possible to form the drag blade straight over an edge length of up to 1 mm.
  • the notch immediately adjacent to the trailing edge is located in the active cutting area of the cutting insert, which is particularly true for horrschubratten of 0.25 mm / U to 0.55 mm / U and cutting depths between 0.03 mm and 6 mm.
  • the cutting force to be expended in the area of the smoothing cutting edge is minimized, and the chip formation of the expiring workpiece chip is optimized.
  • the invention is preferred in a Feed between 0.25 mm / U to 0.55 mm / U and a depth of cut between 0.03 mm to 6 mm, preferably used 2 mm to 3 mm.
  • Chips produced in sizing can be lighter when used with coolant
  • the drag cutting area which produces the cutting depth during planing or longitudinal turning, is also limited by a notch, which leads to a "dents" of the chip in the chip forming, which
  • Chip breaking promotes This is especially important for ductile materials.
  • the present invention also extends to such cutting edges where multiple trailing edge portions are interrupted by indentations.
  • the cutting edge is followed by a first drag blade, followed by a first notch, followed by the further, minor, in the cutting edge progress, the second, which protrudes from the first drag blade
  • a depth of 0.2 mm to 1 mm and a width of 0.3 mm to 1 mm of the notch has proven to be favorable.
  • the notch extends
  • the length of the drag cutting portion of the cutting edge is preferably 0.3 mm to 0.7 mm long.
  • the radius of the central area of the cutting corner is between 0.2 mm and 2.4 mm, preferably between 0.4 mm and 1.2 mm.
  • the cutting insert is a
  • this cutting insert has a central region, preferably is plateau-shaped and has a flat surface which lies above the cutting edge plane, so that each of the flat surfaces can serve as a support surface during clamping of the cutting insert. This applies to both
  • Cutting inserts which have a central mounting hole for the passage of a clamping screw and for those who have a clamping claw in
  • Tool holder are fixed, which engages in a correspondingly shaped recess.
  • the invention is also applicable to so-called positive cutting inserts whose clearance angle is> 0 °.
  • angles outside the central region and the drag cutting edge regions and the indentations form an angle between 35 ° and 90 °.
  • the cutting insert according to the invention based on a Schneiferwinkelschreibierende formed mirror-symmetrical.
  • the adjoining the cutting edge rake surface has a trough-shaped configuration, so that the running chip is guided over the trough and bent and broken at the end of the trough.
  • a rib-shaped elevation is oriented vertically to the cutting edge so that it points to the lowest point of the notch.
  • Such rib-shaped elevations which are known in principle according to the state of the art, for example from DE 41 36 417 A1 or EP 0 696 942 B1, serve to curve the chip which runs during machining and to bend it up in such a way that the chip can break easily.
  • a raised chip breaker is used, which points in the form of two in the direction of the notches
  • the middle raised chip breaker may be the falling edge of a middle plateau of an already mentioned indexable insert; this falling edge serves as chip breaker.
  • FIG. 1 is a side view of a cutting insert according to the invention
  • FIG. 2 is a partial plan view of the cutting insert of FIG. 1,
  • Fig. 3 is a view from the direction "X" of Fig. 2 in one
  • FIG. 4 is a sectional view taken along the line A-A in Fig. 2,
  • Fig. 5 is a sectional view taken along the line B-B in Fig. 2 and
  • the embodiment shows a cutting insert of the type CNMG120408, which is formed in the present case as an indexable insert and on the top and the bottom each have four cutting edges, which are connected in respective cutting corners with rounded edges.
  • the cutting edges are formed by a rake surface 10, 11 and four free surfaces 21, 22. In the middle of each
  • Chip surface is a plateau 101, 1 11, which can serve alternately as a support surface.
  • Each opposite cutting corners 13 have a central region with an edge radius Ri of 0.8 mm.
  • edge radius Ri of 0.8 mm.
  • the two cutting edges 22, 21 form an angle of 80 ° with each other.
  • the cutting edge corner 13, the trailing edge portions 14, 15, the notches 16, 17 and the cutting edges 21, 22 are formed symmetrically to the Schneckenckenwinkel Halbierenden 23.
  • Spanformmulde 103 in which a plurality of rib-shaped chip-forming elements 18 are arranged.
  • One of the chip-forming elements lies with its longitudinal axis on the Schneckenckenwinkel Halbierenden 23, the rest in each case parallel to this
  • Spanformmulde 103 are arranged extending from the middle plateau finger-shaped raised chip forming elements 19 in the trough 103, the longitudinal axis pointing in the direction of the lowest point of the notch 16, 17. Following the cutting edge in the present case, a chamfer 104 is following the
  • Cutting edge corner 13 is provided, which is at the largest point 0.15 mm wide and expires before the beginning of the area 14, 15. In this area, the raised chip forming element 18 (see FIG. 5) is only 0.1 mm away from the cutting edge 14 or 15.
  • the cutting insert according to the invention is preferably used for workpiece finishing at a depth of cut of 0.03 mm to 6 mm and a feed of 0.25 mm / rev to 0.55 mm / rev.
  • workpiece machining with cutting depths of 1 mm to 2.5 mm and feed rates of 0.25 mm / rev to 0.4 mm / rev is possible.

Abstract

L'invention concerne un insert de coupe pour le traitement par enlèvement de copeaux de pièces à usiner, composé d'un corps polygonal comprenant une face de coupe (10), une surface d'appui espacée de celle-ci (11) et des faces de dépouille (21, 22), lesquelles connectent entre elles la face de coupe et la surface d'appui et qui forment ensemble avec la face de coupe des bords coupants, les bords coupants présentant au moins un coin de coupe (13) arrondi qui, regardé dans une vue de dessus de la face de coupe (10), présente une zone centrale ayant un premier rayon de courbure (R1) et adjacentes latéralement à celle-ci des zones d'arêtes latérales (14, 15), qui sont linéaires ou ont un large rayon de courbure (R2), au moins une des zones d'arêtes de coupe, qui sont directement adjacentes aux zones d'arêtes latérales (14, 15), présentant une rainure (16, 17).
EP19707689.6A 2018-02-27 2019-02-11 Insert de coupe pour l'usinage par enlèvement de copeaux Pending EP3737522A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018104405.4A DE102018104405A1 (de) 2018-02-27 2018-02-27 Schneideinsatz für die zerspanende Bearbeitung
PCT/DE2019/100129 WO2019166053A1 (fr) 2018-02-27 2019-02-11 Insert de coupe pour l'usinage par enlèvement de copeaux

Publications (1)

Publication Number Publication Date
EP3737522A1 true EP3737522A1 (fr) 2020-11-18

Family

ID=65576088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19707689.6A Pending EP3737522A1 (fr) 2018-02-27 2019-02-11 Insert de coupe pour l'usinage par enlèvement de copeaux

Country Status (4)

Country Link
EP (1) EP3737522A1 (fr)
CN (1) CN111356548A (fr)
DE (1) DE102018104405A1 (fr)
WO (1) WO2019166053A1 (fr)

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2179281B (en) * 1985-08-21 1989-12-06 Gen Electric Cutting tool insert having cutting edges with recesses
DE4136417A1 (de) * 1991-11-05 1993-05-06 Krupp Widia Gmbh, 4300 Essen, De Schneideinsatz
DE4314570C2 (de) * 1993-05-05 2001-09-27 Widia Gmbh Vieleckiger Schneideinsatz
JPH08507976A (ja) * 1993-06-25 1996-08-27 ケンナメタル インコーポレイテッド 改良された表面粗さのためのインサートコーナー幾何学的形状
US5368438A (en) 1993-06-28 1994-11-29 Baxter International Inc. Blood pump
DE4434297A1 (de) * 1994-09-13 1996-03-14 Widia Gmbh Schneideinsatz
CN1223607A (zh) * 1996-08-23 1999-07-21 韦狄亚有限公司 钻孔刀片和钻孔工具
JP4155838B2 (ja) * 2003-02-14 2008-09-24 住友電工ハードメタル株式会社 刃先交換式チップ及びそれを用いた切削工具
US7220083B2 (en) * 2003-10-15 2007-05-22 Tdy Industries, Inc. Cutting insert for high feed face milling
CN1268462C (zh) * 2003-12-25 2006-08-09 株洲硬质合金集团有限公司 切削刀片
AT8433U1 (de) * 2005-03-11 2006-08-15 Ceratizit Austria Gmbh Wendeschneidplatte
US7591614B2 (en) * 2007-11-20 2009-09-22 Kennametal Inc. Cutting insert with serrations
WO2010024435A1 (fr) * 2008-08-29 2010-03-04 京セラ株式会社 Plaquette de coupe, outil de coupe, et procédé de coupe utilisant l'outil de coupe
AT11676U1 (de) * 2009-10-02 2011-03-15 Ceratizit Austria Gmbh Schneideinsatz für ein schneidwerkzeug
WO2011065540A1 (fr) * 2009-11-27 2011-06-03 京セラ株式会社 Plaquette de coupe, outil de coupe et procédé de fabrication d'un produit coupé utilisant l'outil de coupe
CN102218553A (zh) * 2011-05-06 2011-10-19 李仕清 一种复合刃复合切削刀头
DE202012012984U1 (de) * 2012-10-10 2014-10-15 Hufschmied Zerspanungssysteme Gmbh Stirnfräser zur Bearbeitung von faserverstärkten Werkstoffen wie CFK
SE1350348A1 (sv) * 2013-03-20 2014-09-21 Sandvik Intellectual Property Dubbelsidigt, indexerbart svarvskär
CN106660145B (zh) * 2014-07-31 2018-09-18 株式会社泰珂洛 切削刀片及刀头更换式切削刀具

Also Published As

Publication number Publication date
DE102018104405A1 (de) 2019-08-29
WO2019166053A1 (fr) 2019-09-06
CN111356548A (zh) 2020-06-30

Similar Documents

Publication Publication Date Title
DE60113369T2 (de) Schneidwerkzeug
DE102009009488B4 (de) Wendeschneidplatte
EP1272304B1 (fr) Outil de coupe rapporte
DE60204559T2 (de) Bohreinsatzgeometrie mit spanspaltender kerbe
EP0980297B1 (fr) Plaquette de coupe pour usinage par enlevement de copeaux
EP3038776B1 (fr) Foret
EP2049295A1 (fr) Outil de coupe pour l'usinage par enlèvement de copeaux de pièces, notamment outil de frappe
EP0361031B1 (fr) Plaquette de coupe pour traitement de précision, en particulier de forages
DE19703569A1 (de) Schneideinsatz
EP0673701B1 (fr) Alésoir
DE10342060B4 (de) Einwegspitze
DE60021529T2 (de) Schneideinsatz für drehbearbeitung
WO2002014003A1 (fr) Plaque de coupe pour outils rotatifs
EP0073926B1 (fr) Outil de coupe, en particulier plaquette amovible
EP1216775A1 (fr) Plaquette de forage et porte-outil
EP1309418A1 (fr) Plaquette de coupe
DE10002108A1 (de) Abnehmbarer Spanbrecher für einen Schneideinsatz
DE102009024256A1 (de) Einlippenbohrer
EP1160042B1 (fr) Alésoir
EP1140408B1 (fr) Piece de coupe rapportee et outil muni d'une piece de coupe rapportee
EP1536905B1 (fr) Outil a percer presentant des matrices de decoupage alternatif, et matrices de decoupage alternatif destinees a un outil a percer de ce type
DE202019103472U1 (de) Werkzeug
DE2734095C2 (de) Schneidwerkzeug zum Schälen auf einer Drehbank
EP3756801B1 (fr) Support de pince
EP0691897A1 (fr) Plaquette de coupe

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20200402

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20230831