FR2706339A3 - Mechanical locking device for cutting inserts for machine tool tools. - Google Patents

Mechanical locking device for cutting inserts for machine tool tools. Download PDF

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Publication number
FR2706339A3
FR2706339A3 FR9307518A FR9307518A FR2706339A3 FR 2706339 A3 FR2706339 A3 FR 2706339A3 FR 9307518 A FR9307518 A FR 9307518A FR 9307518 A FR9307518 A FR 9307518A FR 2706339 A3 FR2706339 A3 FR 2706339A3
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FR
France
Prior art keywords
insert
housing
cutting
base plate
inserts
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.)
Granted
Application number
FR9307518A
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French (fr)
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FR2706339B3 (en
Inventor
Gaillard Jacques
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.)
M2P SA
Original Assignee
M2P SA
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 M2P SA filed Critical M2P SA
Priority to FR9307518A priority Critical patent/FR2706339B3/en
Publication of FR2706339A3 publication Critical patent/FR2706339A3/en
Application granted granted Critical
Publication of FR2706339B3 publication Critical patent/FR2706339B3/en
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
    • 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
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B23C5/2265—Securing arrangements for bits or teeth or cutting inserts by means of a wedge
    • B23C5/2278—Securing arrangements for bits or teeth or cutting inserts by means of a wedge for plate-like cutting inserts fitted on an intermediate carrier, e.g. shank fixed in the cutter body
    • 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
    • B23C2226/00—Materials of tools or workpieces not comprising a metal
    • B23C2226/12—Boron nitride
    • B23C2226/125—Boron nitride cubic [CBN]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2226/00—Materials of tools or workpieces not comprising a metal
    • B23C2226/31—Diamond
    • B23C2226/315—Diamond polycrystalline [PCD]

Landscapes

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

Abstract

L'invention concerne un dispositif qui permet de serrer sans brasage des inserts en matériaux de coupe tels que polycristallin Diamant (PKD) ou nitrure de bore cubique (CBN). Elle est constituée d'une plaquette de base (1) et d'un insert de coupe (2). La plaquette de base (1), fabriquée en un matériau tel qu'acier à ressort, acier rapide, carbure de tungstène, de forme carrée, rhombique, triangulaire ou autres formes standard ISO ou spéciales est réalisée avec un logement dans lequel est positionné l'insert (2) à bloquer lors du montage du dispositif dans le porte-outil de la machine. Le logement comporte au minimum deux ergots à pentes coniques multiples. L'insert 2), avec sa forme et ses deux logements d'ergots, est adapté au logement de la plaquette (1). Le centrage et le blocage de l'insert (2) sont réalisés lors du montage du dispositif dans le porte-outil de la machine. Le dispositif suivant l'invention est particulièrement destiné à remplacer les plaquettes avec inserts brasés en matériaux de coupe tels que polycristallin diamant (PKD) ou nitrure de bore cubique (CBN), utilisés sur machines-outils dans les ateliers de fabrications mécaniques.The invention relates to a device for clamping without soldering inserts made of cutting materials such as polycrystalline diamond (PKD) or cubic boron nitride (CBN). It consists of a base insert (1) and a cutting insert (2). The base plate (1), made of a material such as spring steel, high speed steel, tungsten carbide, square, rhombic, triangular or other ISO standard or special shapes is made with a housing in which is positioned the insert (2) to be blocked when mounting the device in the machine tool holder. The housing has at least two lugs with multiple tapered slopes. The insert 2), with its shape and its two lug housings, is adapted to the housing of the plate (1). The insert (2) is centered and locked when the device is assembled in the tool holder of the machine. The device according to the invention is particularly intended to replace the inserts with brazed inserts made of cutting materials such as polycrystalline diamond (PKD) or cubic boron nitride (CBN), used on machine tools in mechanical manufacturing workshops.

Description

DISPOSITIF A BLOCAGE MECANIQUE DES INSERTS DE COUPE
POUR OUTILS DE MACHINES OUTILS
La présente invention concerne un dispositif comprenant une plaquette de base (1) et un insert (2) en matériau de coupe tel que polycristallin diamant (PKD) ou nitrure de bore cubique (CBN).MECHANICAL LOCKING DEVICE FOR CUTTING INSERTS
FOR MACHINE TOOLS TOOLS
The present invention relates to a device comprising a base plate (1) and an insert (2) made of cutting material such as polycrystalline diamond (PKD) or cubic boron nitride (CBN).

La fabrication traditionnelle est une plaquette en carbure de tungstène sur laquelle est brasé l'insert en matériau de coupe. The traditional manufacture is a tungsten carbide plate on which the insert of cutting material is brazed.

Le dispositif selon l'invention permet de remédier au brasage des inserts et à ses inconvénients, de supprimer les réaffûtages de plaquettes et d'assurer le changement rapide des inserts sur la plaquette de base après usure. The device according to the invention makes it possible to remedy the brazing of the inserts and to its drawbacks, to eliminate the resharpening of inserts and to ensure the rapid change of the inserts on the basic insert after wear.

Le dispositif comporte, selon une première caractéristique, une plaquette de base (i) de forme carrée, rectangulaire, triangulaire, rhombique ou autre forme, fabriquée en acier à ressort ou en acier rapide traité aux environs de 62 HRc ou autres matériaux tel que carbure de tungstène. La plaquette de base (1) comporte un logement de forme particulière, adaptée à la réception de l'insert de coupe (2). Chaque logement de plaquette possède deux ergots au minimum. Chaque ergot est formé par 3 pentes coniques ou plus. Les pentes constituant ces ergots sont inclinées de 7* à 45, les pentes optimum se situant aux environs de 15e.  The device comprises, according to a first characteristic, a base plate (i) of square, rectangular, triangular, rhombic or other shape, made of spring steel or high-speed steel treated around 62 HRc or other materials such as carbide of tungsten. The base plate (1) has a housing of particular shape, suitable for receiving the cutting insert (2). Each insert housing has at least two pins. Each lug is formed by 3 or more conical slopes. The slopes constituting these lugs are inclined from 7 * to 45, the optimum slopes being around 15th.

Selon une deuxième caractéristisue, le dispositif comporte un insert (2) de forme particulière, réalisé dans un matériau de coupe tel que polycristaîlin diamant (PKD) ou nitrure de bore cubique (CBN). L'insert (2) a une forme complémentaire qui s'adapte dans le logement de la plaquette de base (1). II possède deux logements d'ergots dans lesquels viennent se loger les ergots de la plaquette de base (1). Ces logements d'ergots sont formés par des pentes coniques avec des angles correspondant à ceux des plaquettes de base. According to a second characteristic, the device comprises an insert (2) of particular shape, produced in a cutting material such as polycrystalline diamond (PKD) or cubic boron nitride (CBN). The insert (2) has a complementary shape which fits in the housing of the base plate (1). It has two lug housings in which the lugs of the base plate (1) are housed. These lug housings are formed by conical slopes with angles corresponding to those of the base plates.

L'utilisateur pose l'insert (2) - FIG. 3, face de coupe et grande face des logements d'ergots vers le haut, et coiffe cet insert avec la plaquette de base (1), grande face des ergots vers le haut. Les deux ergots de la plaquette de base (1) se logent dans les deux logements d'ergots de l'insert de coupe (2) en appuyant la plaquette (1) vers le bas. Les pentes coniques des ergots se serrent dans les logements d'ergots coniques des inserts et assurent le centrage et le blocage par coincement de l'insert (2) dans sa plaquette (1).  The user places the insert (2) - FIG. 3, cutting face and large face of the lug housings upwards, and covers this insert with the base plate (1), large face of the lugs upwards. The two pins of the base insert (1) are housed in the two lug housings of the cutting insert (2) by pressing the insert (1) downwards. The conical slopes of the lugs tighten in the conical lug housings of the inserts and provide centering and locking by wedging the insert (2) in its plate (1).

Le serrage du dispositif peut se faire en appuyant la plaquette (1) sur son insert (2) par un coin ou une bride placé sur la face supérieure de la plaquette de base (1) - FIG. 4; ou placé sur la face inférieure de l'insert (2)
FIG. 5 ; ou par une vis placée dans la plaquette de base (1) - FIG. 6.The device can be tightened by pressing the plate (1) on its insert (2) by a wedge or a flange placed on the upper face of the base plate (1) - FIG. 4; or placed on the underside of the insert (2)
FIG. 5; or by a screw placed in the base plate (1) - FIG. 6.

Le démontage du dispositif se fait par desserrage du coin supérieur ou inférieur au desserrage de la vis de fixation. The device is dismantled by loosening the upper or lower corner when the fixing screw is loosened.

Le démontage de l'insert (2) de sa plaquette (1) est réalisé en appuyant la plaquette sur sa face inférieure et en poussant l'insert vers le bas - FIG. 7. Disassembly of the insert (2) from its plate (1) is carried out by pressing the plate on its underside and pushing the insert down - FIG. 7.

(Pour permettre le démontage, L'insert ne doit pas porter sur sa face inférieure.)
Selon des modes particuliers de réalisation, la plaquette de base (1) peut être fabriquée en tous matériaux et en particulier en acier à ressort, acier rapide ou en carbure de tungstène. Les formes et dimensions peuvent être réalisées suivant normes ISO ou formes et dimensions spéciales.(To allow disassembly, The insert must not bear on its underside.)
According to particular embodiments, the base plate (1) can be made of any material and in particular of spring steel, high-speed steel or tungsten carbide. Shapes and dimensions can be produced according to ISO standards or special shapes and dimensions.

La plaquette de base (1) - FIG.1 possède un logement de forme particulière pour recevoir l'insert de coupe. Ce logement possède au minimum deux ergots de blocage et de centrage. Chaque ergot est réalisé par au minimum 3 pentes coniques. Ces pentes sont usinées avec des inclinaisons de 7 à 45* (angle optimum 15e). La plus grande section de l'ergot est située vers le haut. La position des ergots est réalisée de telle sorte que l'insert soit tiré dans le fond du logement de la plaquette au moment du blocage. Les logements et la réalisation des ergots sont obtenus par découpage en électro-érosion à fil. The base plate (1) - FIG.1 has a specially shaped housing to receive the cutting insert. This housing has at least two locking and centering pins. Each lug is made by at least 3 conical slopes. These slopes are machined with inclinations from 7 to 45 * (optimum angle 15th). The largest section of the lug is located at the top. The position of the pins is carried out so that the insert is pulled into the bottom of the plate housing at the time of blocking. The housings and the production of the pins are obtained by cutting with wire EDM.

L'insert (2) - FIG. 2 est réalisé dans un matériau de coupe tel que polycristallin diamant (PKD) ou nitrure de bore cubique (CBN) avec une forme correspondant à son logement dans la plaquette de base (i). Dans l'insert sont réalisés au minimum deux logements d'ergots coniques (grande face vers le haut), dans lesquels viennent se loger les deux ergots de la plaquette de base. Ces logements d'ergots sont réalisés avec des pentes coniques de 7 à 45 identiques à celles des pentes des ergots de la plaquette de base (1). Les inserts (2) sont découpés par électro-érosion à fil et affûtés sur demande. The insert (2) - FIG. 2 is made of a cutting material such as polycrystalline diamond (PKD) or cubic boron nitride (CBN) with a shape corresponding to its housing in the base plate (i). In the insert are made at least two housings of conical lugs (large face up), in which are housed the two lugs of the base plate. These lug housings are made with conical slopes from 7 to 45 identical to those of the slopes of the lugs of the base plate (1). The inserts (2) are cut by wire EDM and sharpened on request.

L'enfoncement de l'insert (2) dans la plaquette de base (i) ne doit pas être complet. Un débordement résiduel sur la face inférieure d'environ 0,1 mm doit subsister - FIG. 3, pour assurer un blocage positif de l'ensemble et pour éviter tout jeu après montage et serrage de l'insert dans son logement.  The insertion of the insert (2) into the base plate (i) must not be complete. A residual overflow on the underside of approximately 0.1 mm must remain - FIG. 3, to ensure positive blocking of the assembly and to avoid any play after assembly and tightening of the insert in its housing.

La position des ergots de la plaquette de base (1) est comprise dans un angle se situant entre 60' et 160'. The position of the pins of the base plate (1) is included in an angle between 60 'and 160'.

Le dispositif suivant l'invention est particulièrement recommandé pour le remplacement des plaquettes traditionnelles à inserts brasés utilisés sur les portes-outils des machines-outils dans les ateliers de constructions mécaniques. Il permet le montage facile de l'insert (2) et son remplacement après utilisation. Le faible coût de fabrication de l'insert (2) permet la suppression des réaffûtages. La plaquette de base (1) peut recevoir des inserts (2) dans différents matériaux de coupe.  The device according to the invention is particularly recommended for the replacement of traditional inserts with brazed inserts used on the tool holders of machine tools in mechanical engineering workshops. It allows easy assembly of the insert (2) and its replacement after use. The low manufacturing cost of the insert (2) eliminates the need for resharpening. The base plate (1) can receive inserts (2) in different cutting materials.

Claims (4)

REVENDICATIONS 1. Le dispositif à blocage mécanique d'inserts de coupe pour outils de machines outils est caractérisé en ce qu'il comporte - une plaquette support (1) avec logement d'insert comportant au minimum deux ergots de fixation à pentes coniques multiples, - un insert (2) en matériau de coupe1 réalisé avec une forme correspondant à son logement dans la plaquette et en particulier avec au moins deux logements d'ergots réalisés avec pentes coniques identiques à celles de la plaquette de base (1). 1. The device with mechanical locking of cutting inserts for machine tool tools is characterized in that it comprises - a support plate (1) with insert housing comprising at least two fixing lugs with multiple conical slopes, - an insert (2) made of cutting material1 produced with a shape corresponding to its housing in the insert and in particular with at least two lug housings produced with conical slopes identical to those of the base insert (1). 2. Le dispositif selon revendication 1 est caractérisé en ce que la plaquette de base (1) possède un logement avec au minimum deux ergots à pentes coniques multiples qui permettent le centrage et le blocage de l'insert (2) au moment du serrage de l'ensemble dans le porte-outil de la machine. Un seul sens de montage est possible: grande face des ergots de la plaquette et des logements d'ergots de l'insert vers le haut. 2. The device according to claim 1 is characterized in that the base plate (1) has a housing with at least two lugs with multiple conical slopes which allow centering and blocking of the insert (2) at the time of tightening of the assembly in the tool holder of the machine. Only one mounting direction is possible: large face of the tabs of the insert and lug housings of the insert upwards. 3. Disnositif selon revendication 2, caractérisé en ce que l'insert (2) est fabriqué dans un matériau de coupe tel que polycristallin diamant (PKD) ou nitrure de bore cubique (CBN) et qu'il est placé dans le logement de la plaquette de base (1). 3. Device according to claim 2, characterized in that the insert (2) is made of a cutting material such as polycrystalline diamond (PKD) or cubic boron nitride (CBN) and that it is placed in the housing of the base plate (1). 4. DisDositif selon revendication 3, caractérisé en ce que l'insert (2) dépasse d'une valeur comprise entre 0,05 et 0,2 mm de la base inférieure de la plaquette (1).  4. DisDositif according to claim 3, characterized in that the insert (2) exceeds by a value between 0.05 and 0.2 mm from the lower base of the plate (1).
FR9307518A 1993-06-18 1993-06-18 Mechanical locking device for cutting inserts for machine tool tools. Expired - Lifetime FR2706339B3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9307518A FR2706339B3 (en) 1993-06-18 1993-06-18 Mechanical locking device for cutting inserts for machine tool tools.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9307518A FR2706339B3 (en) 1993-06-18 1993-06-18 Mechanical locking device for cutting inserts for machine tool tools.

Publications (2)

Publication Number Publication Date
FR2706339A3 true FR2706339A3 (en) 1994-12-23
FR2706339B3 FR2706339B3 (en) 1995-04-14

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997023322A1 (en) * 1995-12-22 1997-07-03 Kennametal Inc. High speed rotating tool
WO2006059949A1 (en) * 2004-12-03 2006-06-08 Sandvik Intellectual Property Ab Cutting insert with cutting tips anchor portions.
US7360972B2 (en) 2003-06-03 2008-04-22 Sandvik Intellectual Property Ab Indexable cutting inserts and methods for producing the same
US7407348B2 (en) 2004-06-02 2008-08-05 Sandvik Intellectual Property Ab Indexable cutting inserts and methods for producing the same
US7824134B2 (en) 2003-05-14 2010-11-02 Diamond Innovations, Inc. Cutting tool inserts and methods to manufacture
WO2015110985A1 (en) * 2014-01-22 2015-07-30 Saturnino Fiori Cate Srl Tool-holding device for a machining tool and method for locking a tool into a tool-holder
US20190232453A1 (en) * 2016-01-05 2019-08-01 Sumitomo Electric Sintered Alloy, Ltd. Throwaway insert and method of grinding cutting edge of throwaway insert

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU700907B2 (en) * 1995-12-22 1999-01-14 Kennametal Inc. High speed rotating tool
WO1997023322A1 (en) * 1995-12-22 1997-07-03 Kennametal Inc. High speed rotating tool
US7824134B2 (en) 2003-05-14 2010-11-02 Diamond Innovations, Inc. Cutting tool inserts and methods to manufacture
US8161850B2 (en) 2003-06-03 2012-04-24 Sandvik Intellectual Property Ab Indexable cutting inserts and methods for producing the same
US7360972B2 (en) 2003-06-03 2008-04-22 Sandvik Intellectual Property Ab Indexable cutting inserts and methods for producing the same
US7407348B2 (en) 2004-06-02 2008-08-05 Sandvik Intellectual Property Ab Indexable cutting inserts and methods for producing the same
WO2006023376A3 (en) * 2004-08-16 2006-07-13 Sandvik Intellectual Property Indexable cutting inserts and methods for producing the same
CN101094741B (en) * 2004-12-03 2011-10-12 山特维克知识产权股份有限公司 Cutting inserts with cutting end anchor portion
WO2006059949A1 (en) * 2004-12-03 2006-06-08 Sandvik Intellectual Property Ab Cutting insert with cutting tips anchor portions.
WO2015110985A1 (en) * 2014-01-22 2015-07-30 Saturnino Fiori Cate Srl Tool-holding device for a machining tool and method for locking a tool into a tool-holder
US10207330B2 (en) 2014-01-22 2019-02-19 Saturnino Fiori Cate Srl Tool-holding device for a machining tool and method for locking a tool into a tool-holder
US20190232453A1 (en) * 2016-01-05 2019-08-01 Sumitomo Electric Sintered Alloy, Ltd. Throwaway insert and method of grinding cutting edge of throwaway insert
US11040401B2 (en) * 2016-01-05 2021-06-22 Sumitomo Electric Sintered Alloy, Ltd. Throwaway insert and method of grinding cutting edge of throwaway insert

Also Published As

Publication number Publication date
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