EP2142326A2 - Outil de coupe pour evidement et mortaisage a systeme d'elements de coupe interchangeable - Google Patents

Outil de coupe pour evidement et mortaisage a systeme d'elements de coupe interchangeable

Info

Publication number
EP2142326A2
EP2142326A2 EP08736167A EP08736167A EP2142326A2 EP 2142326 A2 EP2142326 A2 EP 2142326A2 EP 08736167 A EP08736167 A EP 08736167A EP 08736167 A EP08736167 A EP 08736167A EP 2142326 A2 EP2142326 A2 EP 2142326A2
Authority
EP
European Patent Office
Prior art keywords
cutting body
cutting
tool according
clamping
cutting tool
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Withdrawn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
EP08736167A
Other languages
German (de)
English (en)
Inventor
Wolfgang Zitzlaff
Marian Zintz
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.)
Ceramtec GmbH
Original Assignee
Ceramtec 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 Ceramtec GmbH filed Critical Ceramtec GmbH
Publication of EP2142326A2 publication Critical patent/EP2142326A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
    • B23B29/04—Tool holders for a single cutting tool
    • B23B29/043—Tool holders for a single cutting tool with cutting-off, grooving or profile cutting tools, i.e. blade- or disc-like main cutting parts
    • 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
    • Y10T407/22—Cutters, for shaping including holder having seat for inserted tool
    • Y10T407/2272—Cutters, for shaping including holder having seat for inserted tool with separate means to fasten tool to holder

Definitions

  • the invention relates to a cutting tool for cutting mainly metallic materials, with a clamping holder and a clamping holder arranged on the cutting body support on which a cutting body rests, which is pressed by a clamping claw on the Schneid economistlage and to a arranged outside of the cutting body pad contact surface.
  • the state of the art in the machining industry today includes a large number of lancing systems and cutting tools with interchangeable cutting bodies, cutting body underlays and cutting body retainers and other types of cutting body attachment.
  • Many cutting tools are limited to the piercing, usually the grooving of grooves, in which the cutting tool is moved only in the axial direction.
  • the cutting pressure created by the cutting forces during the chip removing lancing process and the chips that run off the cutting body cause heat generation and wear on the cutting body and the components surrounding it.
  • the cutting pressure-absorbing contact surface for the cutting body is usually a flat or prism-like surface on the base support itself. This contact surface, which is attached directly to the base support or also to the cutting body support, is only subject to a limited service life due to the continual cutting pressure and heat load and must be replaced regularly. to ensure a safe machining process and dimensionally stable workpieces.
  • the invention has for its object to improve a cutting tool according to the O- berbegriff of claim 1 so that it has a longer life by replacing wear-prone components.
  • the contact surface is part of a trained as a separate component cutting body system, which is attached exchangeably on the clamp.
  • the cutting body system can be fastened on the clamping holder in at least two installation directions, wherein a contact surface for the cutting body is available in each installation direction. The complete replacement of a cutting body system is required only when all contact surfaces of the cutting body system are worn.
  • the cutting body system has two end faces, wherein on each end face a contact surface is arranged and by turning the cutting body system on the clamping holder in each case a contact surface for the cutting body is available.
  • the cutting body system is cuboid.
  • the cutting body system is preferably fastened by screws to the clamping holder.
  • the cutting body system can be positioned accurately on the clamping holder via a tongue and groove connection. As a result, the cutting body system can not slip on the clamp holder during replacement and also in the application.
  • the cutting body system is located on a stop surface of the clamping holder and are introduced into the stop surface two threaded holes for screwing the cutting body system on the clamp and is arranged between the threaded holes, the groove / spring connection.
  • the cutting body system preferably consists of the following or a combination of the following materials: highly alloyed and tempered steel, hot-work steel or ceramic.
  • elements with special properties for the heat conduction, the damping, or the electrical or thermal insulation are arranged between the cutting body system and the clamping holder.
  • these may be low thermal conductivity elements.
  • the cutting body pad, the cutting body system and the clamping claw on the clamp holder with a tongue and groove connection are made precisely. As a result, they are always in the required position.
  • the cutting body system is arranged in the same axial direction as the cutting body pad, whereby both parts are optimally aligned with the cutting plate.
  • the cutting body and the Schneid stresses- are led ments on the cutting body pad, wherein the cutting body pad on its side facing the cutting body and the cutting body plant a guide strip and the cutting body and the cutting body system on its side facing the cutting body substrate each have an adapted to the guide bar engaging element, or vice versa. This allows optimal alignment of these parts.
  • the guide bar is a groove-like depression and the engaging elements are spherical projections.
  • the clamping holder has a groove and has the cutting body pad on its side facing the clamping holder on a spring, wherein the cutting body pad is guided over the engaging in the groove spring accurately on the clamp holder.
  • the groove threaded holes are introduced and has the cutting body pad adapted to the number of threaded holes through holes and are for fixing the cutting body pad on the clamp screws, the cutting body pad protruding, screwed into the threaded holes.
  • the cutting body pad protruding, screwed into the threaded holes.
  • the cutting body pad and the cutting body system are guided on the same side of the clamping holder.
  • the clamping claw is on the one hand out and experienced on the other hand when mounting on the clamp holder a pulling movement away from the cutting body.
  • the inclined plane formed as a spring is formed by individual support points.
  • the inclined plane formed as a groove is bounded laterally on the one hand by a guide surface on the clamping holder and on the other hand by the cutting body system.
  • the angle y is preferably between 75 ° and 85 ° and is preferably 80 °.
  • the inclined plane is inclined in one embodiment at an angle z surface of the clamping holder and the angle z is less than 30 ° and greater than 1 ° and is particularly preferably less than 10 ° and is advantageously 3 °.
  • a cutting body system according to the invention for a clamping holder of a cutting tool for cutting mainly metallic materials according to the invention has at least two contact surfaces for a cutting body, a groove or a fitting piece for tongue and groove connection of the cutting body with the clamp holder and with two through holes for attachment of the cutting body with Provided screws on the clamp holder.
  • the invention relates to a cutting tool 1 (see figures), which can be used in its basic design equally for grooving, tapping and grooving. It always consists of a basic carrier, referred to below as clamping holder 2, of an exchangeable cutting body base 3, of a novel interchangeable cutting-body installation 4 and of an exchangeable cutting-material holding device, hereinafter clamping claw 5 Nannt.
  • Cutting body pad 3, cutting body system 4 and the clamping claws 5 form the so-called clamping system and are inventively adapted to the shape and function of the cutting body 6 used, or adaptable.
  • the advantage of this invention is the use of a replaceable cutter body 4 and the multi-functional design of all components coming to use to meet the changing in the case of use cases and to ensure the user as simple as possible selection and installation of the components. Standardization and modular system are in the foreground here.
  • the used and replaceable cutter body 4 to call. It has one or more, the adjacent cutting body 6 adapted ends, hereinafter referred to contact surfaces 7, and is mainly fixed by screws 8 to the contact surface 9 of the clamping holder 2.
  • This cutting body system 4 is arranged in the same axial direction as the cutting body support 3.
  • the clamping holder 2 (see Fig. 4) has in the same axial direction a groove or guide groove 10 and mounting holes or threaded holes 11. Perpendicular to the guide groove 10 is located in the middle between two threaded holes 11 of the cutting body pad 3, a groove or guide groove 12 and on both sides to the associated mounting holes or threaded holes 13 for the interchangeable cutting body system. 4
  • the contact surfaces 7 of the cutting body system 4 have a prismatic shape for the positive connection between the cutting body 6 and the cutting body system 4 (see, for example, FIG. 3).
  • the lateral forces occurring during piercing are absorbed and the vertical rigidity of the connection prevents the cutting body 6 from rotating and tilting away.
  • the cutting body 6 is guided by a further prism-shaped connection, also referred to as a guide strip 14, between the underside of the cutting body 6 and the top of the cutting body pad 3.
  • Possible shape and Positional errors of the interacting components are compensated by the same axial alignment of the components and the coordinated tolerances of the systems, guides and prisms in the technical sense of a clearance fit.
  • the cutting body unit 4 can be brought to further use by turning it through 180 ° with an unworn end or an unworn contact surface 7.
  • the tongue and groove connection and an abutment surface 15 between the base body, i. Clamping holder 2 and cutting body system 4 ensure a precise re-positioning when turning the cutting body system 4.
  • the Schneidköperstrom 4 can thus be used multiple times and offers the user a cost life extension of the entire lancing system and high process reliability.
  • the simple interchangeability of the components allows the use of different cutting body systems 4 with differently shaped ends, or contact surfaces 7, widths and lengths. Particularly noteworthy is that the differently shaped contact surfaces 7 are adapted to the different shapes, widths and lengths of the required cutting body 4. It is naturally also possible, according to the invention, to use identical or differently shaped abutment surfaces 7 on a cutting-body installation 4.
  • the cutting body system 4 can also be made of different materials. For example, normal tempering steels in normal applications, high-speed cutting steels or hot working steels under high loads due to high cutting pressures or heat development, which occur in different ways when cutting different materials with ceramic, mixed ceramic, cubic boron nitride, polycrystalline diamond or carbide cutters.
  • This hold-down also known as a clamping claw 5
  • This hold-down also known as a clamping claw 5
  • the clamping claw 5 is usually in a position-determining form, hereinafter referred to as guide surface 18, out (see Fig. 5).
  • the clamping force of the fastening screw 17 exerts via the contact points 19 (see FIG. 6) between the rearwardly beveled upper side 16 of the clamping holder 2 and the clamping claw 5 and the contact zone 20 (in a special embodiment a nose on the clamping claw) between the cutting body 6 and the clamping claw 5 Clamping force on the cutting body 6 from.
  • the special design of the bearing (16 and 18) of the clamping claw 5 is formed by a backwardly inclined inclined plane 16 on the clamp holder 2.
  • the underside 21 of the clamping claw 5 is formed similarly obliquely and also has in the vicinity of the outer edges defined support points 19 (see Figure 6).
  • About this support points 19 is exercised by the incipient clamping force, which is referred to by tightening the mounting screw 17, also known as a clamping screw, a rectilinear motion of the cutting body 6 away to the rear, applied parallel to the position of the components.
  • a lateral guide in the form of a further tongue and groove connection through the guide surface 18 and the inner side 22 of the cutting body system 4 prevents the rotation of the clamping claw 5 in this clamping operation.
  • the clamping nose or contact zone 20 has a shape adapted to the cutting body surface. This shape is usually determined in width, length and surface by the cutting body 6. Possible shapes are smooth and prismatic shapes as well as hollows and special round or oval hollows or double hollows. A preferred well is described in EP 1 536 903 B1 (referred to as double well).
  • the width-to-height ratio of the clamping nose is at least 1: 2 in order to achieve sufficient bending and torsional rigidity.
  • Another inventive feature (see Fig. 8) of this clamping system is the obliquely at an angle y axis 23 of the mounting hole or threaded bore 24 for the mounting screw 17 of the clamping claw 5.
  • This angle y is according to the invention between 75 ° and 85 °, wherein 80 ° proves to be particularly effective in exerting the intentional to the rear acting force components.
  • the surface z which slopes at an angle z, and / or inclined plane 16 of the clamping holder 2, which forms the bearing surface for the clamping claw 5, is also clearly visible.
  • the plan view of the clamping holder 2 can be seen again, which again shows the position and shape of the groove or guide groove 12.
  • the shape, together with the shape of the cutting body installation, is a tongue-and-groove joint, which, as shown, can be designed as a dovetail guide or simply at right angles.
  • the cutting body 6 is preferably provided with a clamping recess, as described in WO 03/013770 A1.
  • This clamping recess is circular and has a spherical or circular elevation in the middle.
  • the survey is above the trough bottom and below the Cutting body top.
  • the clamping claw 5 engages with an adapted molded nose positively into the recess of the cutting body 6.
  • This trough is used for form-fitting tension on the clamping holder 2.
  • this cutting body 6 offers itself with the special trough.
  • EP 1 536 903 B1 describes a cutting body 6 for clamping into a cutting tool for machining cast materials with a cutting body top, a first clamping trough for clamping into the cutting tool and a cutting edge for machining. So that lapping or grinding operations of the upper side of the cutting body do not influence the clamping properties of the cutting body, a second clamping recess is arranged coaxially to the first clamping recess, wherein the first clamping recess is arranged lower than the second clamping recess and both lower than the cutting body upper side.
  • the clamping claw of the tool rests on the second clamping recess and, for example, engages with a nose in the first clamping recess.
  • the cutting body 6 can be made of PCBN or a CBN composite material, wherein the cutting body a
  • the clamping trough can be circular and have a spherical or circular elevation in the middle.
  • Contour of the clamping recess is preferred over a corresponding shape of the
  • Green body introduced and the green body thus prepared is then dried and sintered.
  • the cutting body can also be provided with a coating.

Landscapes

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

Abstract

L'invention concerne un outil de coupe (1) pour l'usinage par enlèvement de copeaux de matériaux, principalement métalliques, comprenant un support de serrage (2) et un support (3) pour éléments de coupe, disposé sur le support de serrage (2) et sur lequel s'applique un élément de coupe (6) qui est compressé par une griffe de serrage (5) sur le support (3) pour éléments de coupe, et à l'encontre d'une surface d'appui (7) disposée à l'extérieur dudit support (3) pour éléments de coupe. Dans le but d'accroître la durée de service du support de serrage, l'invention est caractérisée en ce que la surface d'appui (7) fait partie d'un système d'éléments de coupe (4) conçu comme composant séparé, ledit système étant fixé, de manière interchangeable, sur le support de serrage (2).
EP08736167A 2007-04-20 2008-04-14 Outil de coupe pour evidement et mortaisage a systeme d'elements de coupe interchangeable Withdrawn EP2142326A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007019135 2007-04-20
PCT/EP2008/054460 WO2008128911A2 (fr) 2007-04-20 2008-04-14 Outil de coupe pour évidement et mortaisage à système d'éléments de coupe interchangeable

Publications (1)

Publication Number Publication Date
EP2142326A2 true EP2142326A2 (fr) 2010-01-13

Family

ID=39627746

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08736167A Withdrawn EP2142326A2 (fr) 2007-04-20 2008-04-14 Outil de coupe pour evidement et mortaisage a systeme d'elements de coupe interchangeable

Country Status (4)

Country Link
US (1) US20100158621A1 (fr)
EP (1) EP2142326A2 (fr)
DE (1) DE102008001135A1 (fr)
WO (1) WO2008128911A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9475123B2 (en) * 2010-08-04 2016-10-25 Ceramtec Gmbh Cutting tool for recessing and grooving
CN112238227A (zh) 2019-07-17 2021-01-19 肯纳金属公司 具有改进的阻尼效果的切割工具固持器
CN113649605A (zh) * 2021-07-05 2021-11-16 张洁泓 一种复合式涂层pcbn切削刀具及其制备方法

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3205558A (en) * 1964-01-27 1965-09-14 Willeys Carbide Tool Co Cutting tool with removable throw-away insert
US3611525A (en) * 1970-04-01 1971-10-12 Warner Swasey Co Cutoff or grooving tool and holder therefor
US3758927A (en) * 1971-12-13 1973-09-18 Warner Swasey Co Cutoff tool
BE792631A (fr) * 1971-12-13 1973-06-12 Warner & Swasey Cy Outil de coupe
US3780408A (en) * 1972-03-02 1973-12-25 Kennametal Inc Cutting tool
US4227838A (en) * 1979-01-08 1980-10-14 Fansteel Inc. Grooving and cut-off tool
US5988952A (en) * 1998-05-26 1999-11-23 Antoun; Gregory S. Grooving and threading tool
DE10208266A1 (de) 2001-07-26 2003-02-13 Ceram Tec Ag Innovative Cerami Spanabhebendes Schneidwerkzeug und Schneidplatte in Donut-Form
DE10153646A1 (de) * 2001-10-31 2003-05-22 Horn P Hartmetall Werkzeugfab Werkzeughalter für Schneidkörper
DE10239451A1 (de) 2002-08-28 2004-03-11 Ceramtec Ag Innovative Ceramic Engineering Schneidplatte mit Doppelmulde
CA2536445A1 (fr) 2003-08-22 2005-03-10 Ceramtec Ag Innovative Ceramic Engineering Plaque coupante en pcbn ou en materiau composite a base de cbn comprenant un creux de serrage

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008128911A2 *

Also Published As

Publication number Publication date
US20100158621A1 (en) 2010-06-24
WO2008128911A3 (fr) 2009-04-02
WO2008128911A2 (fr) 2008-10-30
DE102008001135A1 (de) 2008-10-23

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