WO2023060291A1 - Outil de fraisage - Google Patents

Outil de fraisage Download PDF

Info

Publication number
WO2023060291A1
WO2023060291A1 PCT/AT2022/060276 AT2022060276W WO2023060291A1 WO 2023060291 A1 WO2023060291 A1 WO 2023060291A1 AT 2022060276 W AT2022060276 W AT 2022060276W WO 2023060291 A1 WO2023060291 A1 WO 2023060291A1
Authority
WO
WIPO (PCT)
Prior art keywords
seats
rotation
milling tool
tool body
axis
Prior art date
Application number
PCT/AT2022/060276
Other languages
German (de)
English (en)
Inventor
Peter Burtscher
Original Assignee
Ceratizit Austria Gesellschaft M.B.H.
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 Ceratizit Austria Gesellschaft M.B.H. filed Critical Ceratizit Austria Gesellschaft M.B.H.
Publication of WO2023060291A1 publication Critical patent/WO2023060291A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/006—Details of the milling cutter body
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/28—Arrangement of teeth
    • B23C2210/282—Unequal angles between the cutting edges, i.e. cutting edges unequally spaced in the circumferential direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2250/00—Compensating adverse effects during milling
    • B23C2250/04—Balancing the cutter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/06—Face-milling cutters, i.e. having only or primarily a substantially flat cutting surface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/02—Details
    • H04R9/04—Construction, mounting, or centering of coil

Definitions

  • the present invention relates to a milling tool and a method for constructing a milling tool.
  • milling tools For the machining of e.g. metallic materials, milling tools are often used which have a tool body which is provided with a plurality of seats for receiving cutting inserts, which are distributed over the circumference of the tool body in order to provide several so-called teeth for the machining .
  • a tool body which is provided with a plurality of seats for receiving cutting inserts, which are distributed over the circumference of the tool body in order to provide several so-called teeth for the machining .
  • only two seats can be distributed over the circumference of the tool body, for example, or three or more such seats can also be provided.
  • the cutting inserts arranged on the seats usually protrude from the tool body with cutting edges in the radial and axial direction and form the areas of the milling tool that engage with the material to be machined in order to remove chips.
  • the cutting inserts are usually at least partially made of a hard and wear-resistant material, such as in particular hard metal, cermet or an ultra-hard material such as cutting ceramics, cBN (cubic boron nitride, cubic boron nitride) or PCD (polycrystalline diamond), whereas the tool body is typically made of a tougher material such as tool steel, Densimet® or a tougher cemented carbide.
  • a hard and wear-resistant material such as in particular hard metal, cermet or an ultra-hard material such as cutting ceramics, cBN (cubic boron nitride, cubic boron nitride) or PCD (polycrystalline diamond)
  • the tool body is typically made of a tougher material such as tool steel, Densimet® or a tougher cemented carbide.
  • the milling tool has a tool body having an axis of rotation about which the milling tool rotates in a predetermined direction of rotation during operation, and a plurality of seats for receiving cutting inserts.
  • the seats are arranged at unequal angular distances from one another over the circumference of the tool body.
  • the main tool body has chip spaces assigned to each of the seats, outer surfaces arranged circumferentially behind the respective seat with respect to the direction of rotation, and intermediate surfaces arranged circumferentially between the outer surfaces and the chip space of the seat following in the direction of rotation.
  • the intermediate surfaces each extend along the surface of a shaping surface.
  • the shaping surface of an intermediate surface is rotated through predetermined angles on a path around the The axis of rotation can be brought into contact with the respective other intermediate surfaces in such a way that they extend along the surface of this shaping surface.
  • the predetermined angles are different from the angular distances.
  • the angular distances do not all have to be different from one another, but there must only be at least two different angular distances.
  • the shaping surface of an intermediate surface can be brought into contact with the other intermediate surfaces by rotating on a path around the axis of rotation at different predetermined angles in such a way that the latter extend along this shaping surface.
  • the intermediate surfaces have the same spatial three-dimensional contour with respect to one another and differ slightly from one another only in their size and the shape of their edges due to the unequal division.
  • the predetermined angles through which the forming surface on the track must be rotated about the axis of rotation in order to engage the respective other intermediate surfaces are not equal to the angular distances at which the seats are located on the tool body. In other words, the interfaces are also unequal across
  • the shaping surface has surface areas whose surface normal has tangential directional components with respect to the axis of rotation.
  • the shaping surface is not a partial surface of a body of revolution about the axis of rotation.
  • the formation of the intermediate surfaces enables the center of mass to approach the axis of rotation in a particularly effective manner.
  • the intermediate surfaces each adjoin a chip space.
  • the intermediate surfaces can be designed very simply and inexpensively in a way that enables good imbalance compensation on the one hand and also provides a harmonious visual impression on the other.
  • the seats of the plurality of seats are preferably of identical design to one another and the chip spaces assigned to the respective seats are of identical design to one another. In this case, a particularly simple manufacture is made possible.
  • the seats are designed in such a way that cutting inserts fastened to the seats protrude from the main tool body in the radial direction and in the axial direction.
  • the tool body has at least three seats for accommodating cutting inserts.
  • the main tool body can in particular also have more or even significantly more than three seats for accommodating cutting inserts.
  • the milling tool also has a plurality of cutting inserts arranged on the seats.
  • the intermediate surfaces are preferably arranged in such a way that the center of gravity of the milling tool with cutting inserts arranged thereon is approximated to the axis of rotation.
  • particularly good imbalance compensation is achieved in that the mass of the cutting inserts arranged on the milling tool is also taken into account when forming the intermediate surfaces.
  • the tool body is free of holes for imbalance compensation.
  • a particularly advantageous optical impression is given and structures on which dirt or chips can accumulate are avoided.
  • the process of designing a milling tool has the steps:
  • the shaping surface is constructed in such a way that it has a surface normal, at least in regions, which has tangential directional components with respect to the axis of rotation.
  • the shaping surface does not extend along the surface of a body of revolution around the axis of rotation.
  • the formation of the intermediate surfaces enables the center of mass to approach the axis of rotation in a particularly effective manner.
  • the defined angles are individually varied in such a way that the center of mass for the milling tool with cutting inserts arranged thereon is brought closer to the axis of rotation to less than 15 ⁇ m, preferably to less than 10 ⁇ m, more preferably to less than 5 ⁇ m .
  • a milling tool with a particularly high balancing quality is provided.
  • the method preferably has the step of manufacturing the device constructed in this way
  • the milling tool has a tool body having an axis of rotation about which the milling tool rotates in a predetermined direction of rotation during operation, and a plurality of seats for receiving cutting inserts, and is manufactured in the method described above.
  • FIG. 1 shows a schematic perspective representation of a milling tool according to a first embodiment with exchangeable cutting inserts arranged thereon;
  • FIG. 2 a schematic end view of the milling tool from FIG. 1;
  • FIG. 3 a schematic side view of the milling tool from FIG. 1;
  • Fig. 4 a schematic representation in front view of the tool body of the
  • Milling tool of Figure 1 but without replaceable cutting inserts attached to seats;
  • Fig. 5 a schematic representation of shaping surfaces for the production of
  • the milling tool 100 has a tool body 10 which has a first end 11 for connection to a fastening interface (not shown) of a processing machine and a free second end 12 .
  • the milling tool is as a so-called slip-on milling cutter is designed with a corresponding interface, but other common configurations of the interface are also possible.
  • the main tool body 10 has an axis of rotation Z, about which the milling tool 100 rotates in a predetermined direction of rotation R during operation.
  • a plurality of seats 1 for receiving exchangeable cutting inserts 6 is formed on the free second end 12 of the tool body 10 .
  • the seats 1 are arranged on the tool body 10 in such a way that replaceable cutting inserts 6 arranged thereon protrude from the tool body 10 both axially and radially with a usable cutting edge area. If the terms "axial”, “radial” and “tangential” are used in the present description, they each relate to the axis of rotation Z of the tool body 10, unless something else results from the respective context.
  • exchangeable cutting inserts 6 are designed as indexable inserts with two cutting areas that can be used one after the other by indexing
  • other forms of exchangeable cutting inserts 6 are also possible, which have at least one or more than two that can be used one after the other by indexing
  • replaceable cutting inserts 6 are fastened to the respective seats 1 via fastening screws 7, but alternatively another type of fastening is also possible, such as e.g. via clamping claws or Similar possible.
  • the angular distances ⁇ , ⁇ , y are at least not all equal to one another.
  • chip spaces 2 are formed in each case, which are used to remove chips from the machined workpiece that occur during operation of the milling tool 100.
  • the chip spaces 2 are each formed at least essentially the same as one another and are formed in a manner known per se as indentations on the outer circumference of the tool base body 10 .
  • outer surfaces 3 which determine the outer circumference of the tool body 10.
  • these can be continuous flat or curved surfaces, or the outer surfaces 3 can also consist of several partial surfaces adjoining one another, as is also the case, for example, in the exemplary embodiment shown in the figures.
  • the outer surfaces 3 can, for example, be partial surfaces of a body of revolution about the axis of rotation R.
  • Intermediate surfaces 4 are also formed on the tool body 10, which are described in more detail below.
  • the intermediate surfaces 4 can in turn be designed as continuous flat or curved surfaces or, for example, be formed by several partial surfaces adjoining one another, as is the case, for example, in the exemplary embodiment.
  • the intermediate surfaces 4 do not extend along a body of revolution about the axis of rotation Z, but rather have at least areas in which the surface normal also has tangential directional components.
  • the interfaces 4 each extend along the surface of a shaping surface F which determines the orientation and curvature of the interfaces 4.
  • the intermediate surfaces 4 can be rotated by rotation of the tool body 10 about the axis of rotation Z by predetermined Angles are brought into planar contact with the same shaping surface F.
  • the intermediate surfaces 4 are identical to one another in terms of orientation and curvature in that they are arranged distributed over the circumference of the tool body 10 only rotated relative to one another by angular distances with respect to the axis of rotation Z.
  • n 2
  • n 3
  • the intermediate surfaces 4 are distributed unevenly over the outer circumference of the tool body 10 in such a way that a shift in the center of mass of the milling tool 100 away from the axis of rotation Z caused by the unequal distribution of the seats 1 is counteracted, so that the center of mass of the milling tool 100 approaches the axis of rotation Z again is or even comes to lie on it again.
  • Fig. 5 it is shown schematically how the shaping surface F is spatially oriented in each case when it lies flat against the respective intermediate surfaces 4 and the predetermined angles a, ', ß' and y', at which the intermediate surfaces 4 extend over the circumference of the Tool body are arranged unevenly distributed are also shown.
  • the basic shape of the tool body 10 is first constructed with an axis of rotation Z and with outer surfaces 3, which determine the outer circumference of the tool body 10.
  • This basic form can be a body of revolution with respect to the axis of rotation Z, for example.
  • a plurality of seats 1 for receiving replaceable cutting inserts 6 with associated chip spaces 2 are then constructed.
  • the number of seats 1 is at least two, but in particular can also be three, four, five or more. This is done in such a way that the seats 1 and the associated chip spaces 2 are constructed as material removal from the previously constructed basic form of the tool body 10 .
  • the seats 1 with associated chip spaces 2 are distributed over the circumference of the tool body 10 at unequal angular distances a, ß, y from one another.
  • the seats 1 and associated chip spaces 2 are preferably each constructed identically.
  • a shaping surface F is then constructed, which is intended to determine the shape, in particular with regard to three-dimensional curvature and orientation, of intermediate surfaces 4 to be formed on the tool body 10 .
  • This shaping surface F is constructed in such a way that the resulting intermediate surfaces 4 have surface normals with tangential directional components, at least in regions.
  • Intermediate surfaces 4 are produced by means of this shaping surface F in such a way that adjacent to the chip spaces 2 it is determined with the shaping surface F how material is to be removed from the basic shape of the tool body 10 .
  • the shaping surface F is rotated by a starting angle on a path about the axis of rotation Z in order to produce the next intermediate surface 4 .
  • the procedure can be such that the starting angles initially correspond to the angular distances ⁇ , ⁇ , ⁇ at which the seats 1 are unevenly distributed over the circumference of the tool body 10 .
  • the resulting center of mass for the milling tool with cutting inserts arranged on it is now determined.
  • the starting angles are individually reduced to predetermined angles ⁇ ′, ⁇ ′, ⁇ ′ for generating the intermediate surfaces 4 varies and the center of mass of the milling tool 100 with cutting inserts 6 arranged thereon is recalculated in order to approximate the center of mass to the axis of rotation Z of the tool body 10 .
  • This step can be carried out, for example, until the center of mass for the milling tool 100 with the cutting inserts 6 arranged thereon has approached the axis of rotation Z to within less than 15 ⁇ m. This can preferably take place until the center of mass has approached the axis of rotation Z to within less than 10 ⁇ m, more preferably within less than 5 ⁇ m.
  • the tool body 10 is manufactured in accordance with the construction created in this way, so that a milling tool 100 with high balancing quality is provided.
  • the main tool body 10 can be manufactured conventionally, for example, by machining from a corresponding starting material or by additive manufacturing, for example using a 3D printing process such as SLM (selective laser melting).

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

L'invention concerne un outil de fraisage (100) possédant : un corps d'outil principal (10) qui présente un axe de rotation (Z) autour duquel l'outil de fraisage tourne dans une direction de rotation prédéfinie (R) pendant le fonctionnement et une pluralité de sièges (1) pour recevoir des plaquettes de coupe (6). Les sièges (1) sont disposés à intervalles angulaires irréguliers (α, ß, y) les uns des autres autour de la circonférence du corps d'outil principal (10). Le corps d'outil principal (10) possède des espaces à copeaux (2) associés à chacun des sièges (1), des faces externes (3) disposées derrière les sièges (1) respectifs dans la direction circonférentielle par rapport à la direction de rotation (R), et des faces intermédiaires (4) disposées dans la direction circonférentielle entre les faces externes (3) et l'espace à copeaux (2) du siège (1) suivant dans la direction de rotation. Les faces intermédiaires (4) s'étendent chacune le long de la surface d'une face de mise en forme (F). La face de mise en forme (F) d'une face intermédiaire (4) peut être amenée, par rotation à des angles prédéfinis (α', ß', y') sur un trajet autour de l'axe de rotation (R), à venir en appui contre les autres faces intermédiaires (4) respectives de telle sorte que ces dernières s'étendent le long de la surface de ladite face de mise en forme (F). Les angles prédéfinis (α', ß', y') sont différents des intervalles angulaires (α, ß, y).
PCT/AT2022/060276 2021-10-13 2022-08-04 Outil de fraisage WO2023060291A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATGM50208/2021U AT17885U1 (de) 2021-10-13 2021-10-13 Fräswerkzeug
ATGM50208/2021 2021-10-13

Publications (1)

Publication Number Publication Date
WO2023060291A1 true WO2023060291A1 (fr) 2023-04-20

Family

ID=85987088

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2022/060276 WO2023060291A1 (fr) 2021-10-13 2022-08-04 Outil de fraisage

Country Status (2)

Country Link
AT (1) AT17885U1 (fr)
WO (1) WO2023060291A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160052072A1 (en) * 2014-08-22 2016-02-25 Kennametal lnc. Asymmetric end mills and applications thereof
US20180071840A1 (en) * 2015-03-30 2018-03-15 National University Corporation Nagoya University Rotating tool
EP4052823A1 (fr) * 2021-03-02 2022-09-07 AB Sandvik Coromant Outil de fraisage de découpe métallique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4808044A (en) * 1986-04-30 1989-02-28 Mitsubishi Kinzoku Kabushiki Kaisha Insert cutter
CN204818215U (zh) * 2015-07-31 2015-12-02 郑州市钻石精密制造有限公司 一种双层同步面铣刀
CN205129045U (zh) * 2015-11-03 2016-04-06 哈尔滨理工大学 具有减振性能且主偏角可变的插铣刀
CN113477998A (zh) * 2021-07-22 2021-10-08 哈尔滨理工大学 一种提高动平衡的不等齿面铣刀

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160052072A1 (en) * 2014-08-22 2016-02-25 Kennametal lnc. Asymmetric end mills and applications thereof
US20180071840A1 (en) * 2015-03-30 2018-03-15 National University Corporation Nagoya University Rotating tool
EP4052823A1 (fr) * 2021-03-02 2022-09-07 AB Sandvik Coromant Outil de fraisage de découpe métallique

Also Published As

Publication number Publication date
AT17885U1 (de) 2023-06-15

Similar Documents

Publication Publication Date Title
DE19855045C2 (de) Mit Schneidplatten bestückter Präzisionsfräser
EP1907158B1 (fr) Element de coupe a inserer, outil et procede d'usinage d'une piece
EP0792709A2 (fr) Méthode à usiner des rainures courbées et outil destiné à cet usinage
DE19709436C2 (de) Zirkularbohrfräser
AT14275U1 (de) Fräswerkzeug
DE102012009097B4 (de) Fräswerkzeug zur Bearbeitung von gehärteten Kurbel- oder Nockenwellen
EP1289702A1 (fr) Procede pour le fraisage d'encoches en arete de poisson
EP0542026B1 (fr) Procédé d'usinage de surface à symétrie de rotation, en particulier vilebrequin, ainsi que outil pour la réalisation d'un tel procédé
EP1286802B1 (fr) Fraise trois tailles
DE102006016626A1 (de) Schneideinsatz und Verfahren zur spanenden Bearbeitung von rotierend bewegten Werkstücken
DE102004030238B4 (de) Tangential-Wendeschneideinsatz und Fräswerkzeug
WO2021175639A1 (fr) Fraise et procédé de fabrication d'une partie de coupe d'une fraise
DE102016101145B4 (de) Fräswerkzeug
EP0518242B1 (fr) Méthode et outil pour l'usinage de surfaces cylindriques à des pièces
EP3359322B1 (fr) Outil de perçage
DE102013014761B4 (de) Stirnfräswerkzeug
EP3996861A1 (fr) Plaquette de coupe double face pour fraisage
EP0912283B1 (fr) Fraisage a grande vitesse
WO2023060291A1 (fr) Outil de fraisage
DE102010048331A1 (de) Bohrer mit Schneidenkorrektur
DE19643192A1 (de) Verfahren zum Bearbeiten von rotationssymmetrischen Werkstückflächen sowie Werkzeug zur Durchführung eines solchen Verfahrens
EP1577060B1 (fr) Outil à entailler
DE2301093A1 (de) Fraeswerkzeug
EP4240556A1 (fr) Dispositif de coupe de micro-formage
EP3698909A1 (fr) Outil d'usinage de surfaces

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 22761348

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2022761348

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2022761348

Country of ref document: EP

Effective date: 20240513