EP2061616A1 - Fraise à surfacer - Google Patents

Fraise à surfacer

Info

Publication number
EP2061616A1
EP2061616A1 EP07724735A EP07724735A EP2061616A1 EP 2061616 A1 EP2061616 A1 EP 2061616A1 EP 07724735 A EP07724735 A EP 07724735A EP 07724735 A EP07724735 A EP 07724735A EP 2061616 A1 EP2061616 A1 EP 2061616A1
Authority
EP
European Patent Office
Prior art keywords
base body
cutter
milling cutter
face milling
face
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Withdrawn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
EP07724735A
Other languages
German (de)
English (en)
Inventor
Günther WIRTH
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.)
Guenther Wirth Hartmetallwerkzeuge & Co KG GmbH
Original Assignee
Guenther Wirth Hartmetallwerkzeuge & Co KG 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 Guenther Wirth Hartmetallwerkzeuge & Co KG GmbH filed Critical Guenther Wirth Hartmetallwerkzeuge & Co KG GmbH
Publication of EP2061616A1 publication Critical patent/EP2061616A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B23C5/2239—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped by a clamping member acting almost perpendicular on the cutting face
    • 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
    • B23C5/24—Securing arrangements for bits or teeth or cutting inserts adjustable
    • 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
    • B23C5/24—Securing arrangements for bits or teeth or cutting inserts adjustable
    • B23C5/2462—Securing arrangements for bits or teeth or cutting inserts adjustable the adjusting means being oblique surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/26—Securing milling cutters to the driving spindle

Definitions

  • the invention relates to a face milling cutter having a cylindrical base body which has at least one offset to the axis of rotation cutter holder for a holding means fixed thereto, substantially correspondingly shaped cutter element, the cutting edge over which is used for milling end face of the main body.
  • Face milling cutters are known in many designs. If the cutting edges are irreversibly fixed, the breakage or substantial damage to a cutting edge makes the entire face milling cutter unusable. In exchangeable
  • Cutting is especially at high processing speeds the problem that the cutting can solve or adjust by the Zentripedal mechanism. Furthermore, the adjustability when inserting a new cutting edge is often a problem, and the means for exact adjustment are often bulky and make the face milling cutter bulky and heavy.
  • An object of the present invention is to improve a face milling cutter with interchangeable cutter elements of the type mentioned so that the cutter elements are easily replaceable and adjustable and even at high Speeds a release of the cutter elements is effectively prevented.
  • the advantages of the face milling cutter according to the invention are, in particular, that the structural design of the milling cutter receptacles and cutter elements effectively prevents ejection from the body even at high rotational speeds. It is achieved a high form and adhesion of the cutter elements in the direction of the main load of the cutting. In this case, a high concentricity is given.
  • the cutter elements are quick and easy to replace, and they can be precisely and easily adjusted or adjusted.
  • a plurality of milling cutter receivers and cutter elements are arranged distributed over the circumference, with an even number of milling cutter elements and milling cutter holders having proven to be particularly favorable, in particular 6.
  • the holding means have a clamping element which can be inserted radially from the outside into the base body and can be screw-fixed, which clampingly rests on the outer circumference of the milling cutter element in its fixed state.
  • a retaining screw is expediently used for screw fixing of the clamping element and is formed radially screwed into the body. In this case, this retaining screw can be screwed directly or by means of a threaded sleeve in the body.
  • a threaded sleeve has the advantage that it can be screwed in after hardening, so that the retaining screw finds an exact, a higher tensile strength than the main body exhibiting thread.
  • a particularly simple and rapid adjustment of the longitudinal position is achieved in that the cutter element abuts with its end region remote from the cutting edge at a setting member adjusting its longitudinal position in the milling cutter receptacle.
  • the cutter element is located with a flat inclined surface on a flat inclined surface of the adjusting member, wherein the adjusting member in the radial direction on the base body is adjustable and this radial adjustment by means of the inclined surfaces leads to a longitudinal adjustment of the position of the cutter element in the cutter holder , Also, this adjustment is so easy to install and easy to replace. By the cutter element engaging behind oblique surface of the adjusting member this is also secured against ejection.
  • the adjusting member is arranged in a corresponding recess on the outer circumference of the base body, so that this overall forms a compact unit without protruding parts.
  • a screw member serving for the radial adjustment of the adjusting member can be screwed radially into a threaded hole of the base body and is in threaded engagement with the adjusting member, the threaded hole and the thread in the adjusting member have opposite ringidesen. Thereby, an adjustability of the adjusting member in both directions is possible by the screw member is rotated in one or the other direction.
  • At least one radial threaded hole in the outer circumference of the base body for receiving a screw, in particular grub screw, serves as a balancing screw.
  • FIG. 1 shows a perspective view of the face milling cutter on the cutting side, wherein six cutter mounts are distributed over the circumference of the base body and only one milling element with its adjusting and holding elements are shown in the manner of an exploded view, as an embodiment of the invention
  • FIG. 2 shows the same arrangement in a perspective view from the rear
  • Figure 3 is a plan view of the front or
  • FIG. 4 shows a side view with a milling element and only one milling cutter receptacle shown for the sake of simplicity;
  • FIG. 5 shows a milling element in a side view
  • FIG. 6 shows the same cutter element in a side view rotated by 90 ° about the longitudinal axis
  • Figure 7 is a sectional view taken along section line A-A in Figure 5 and
  • FIG. 8 shows a sectional view according to the section line B-B in Figure 5.
  • the face milling cutter shown in FIGS. 1 to 4 has a circular-cylindrical main body 10 which, distributed over its outer circumference, has six cutter receptacles 11 for receiving a corresponding number of milling cutter elements 12.
  • the cutter holders 11 each have a cylindrical shape with a cross-section in the form of a circular segment and are aligned parallel to the axis of rotation of the base body 10.
  • the segment tendon of the circular segment-shaped cross-section determines the width of longitudinal slots on the outer circumference of the base body 10.
  • the segmental arc of the circular segment-shaped cross section extends over an angle of 225 °.
  • the milling elements 12 have a corresponding cross-section, which prevents them from being able to be ejected radially out of the main body 10. NEN. They are rotatably held in the cutter mounts 11 and longitudinally displaceable.
  • the segmental arc of the cross-section of the milling cutter receivers 11 or milling cutter elements 12 does not have to be exactly 225 °. However, it is necessary that the angle is greater than 180 °. This angle is referred to in geometry as the center point angle.
  • the body 10 is attached during assembly to a driver of the tool holder, including the base body 10 has a corresponding Mit favoraus originallyung 14 on its back. Subsequently, it is fixed to the tool holder by means of a holding screw, not shown, which is inserted through the through hole 13.
  • the through hole 13 may have a countersink at the front to fully accommodate a correspondingly designed countersunk screw.
  • the cutter element 12 which is shown separately in FIGS. 5 to 8, has at its cutting end region an incision 15 with a flat bottom surface 16, which is delimited by a curved wall 17 extending perpendicular thereto.
  • a cutting plate is inserted, which is referred to below as the cutting edge 18.
  • This cutting edge 18 usually consists of a hard metal or PCD, wherein in principle the entire milling element 12 may consist of a hard metal or PCD. In the present case, the cutting edge 18 is soldered to the remaining milling element 12, whereby a screw connection is possible.
  • the opposite end portion of the cutter element 12 has a flat inclined surface 19, which is required for L Lucassjustage, as will be explained later.
  • the middle peripheral region of the milling cutter element 12 has a planar holding surface 20, which is designed as a milling cut-off and which is required for fixing the milling cutter element 12 in the base body 10, as will be explained in more detail later.
  • the facing away from the cutting end of the cutter mounts 11 each opens into a recess 21 for receiving an adjusting member 22.
  • This has on its side facing the cutter element 12 side a flat inclined surface 23, the slope of which has a plane corresponding to the inclined surface 19 of the cutter 12 angle.
  • the adjusting member 22 is provided with a threaded hole 24 extending in the radial direction of the main body 10 in the assembled state, which hole is aligned with a threaded hole 25 in the main body 10.
  • the thread directions of the threads of the two threaded holes 24, 25 are opposite.
  • a screw member 26 which can be inserted therein has correspondingly two threaded areas with opposite thread pitch. To rotate the screw member 26 is a hexagon socket 27th
  • the arrangement described causes the adjustment member 22 to move in the radial direction upon rotation of the screw member 26 in one direction, while rotation in the opposite direction causes displacement of the adjustment member 22 opposite to the radial direction.
  • the flat inclined surfaces 19, 23 thereby displaces the cutter element 12 in the cutter holder 11 once in one direction and once in the opposite direction.
  • an adjustment of the milling element 12 in its longitudinal direction can be effected in a simple manner.
  • Each side of the milling cutters 11 is a recess 28 for receiving a clamping element 29 for fixing the respective cutter element 12 in its cutter receptacle 11.
  • the clamping element 29 is designed like an annular and s has the cutter receiving 11 towards a flat, serving as a wedge surface inclined surface 30. This is for fixing the cutter element 12 to the planar holding surface 20 at.
  • the clamping element 29 has a passage opening 31 for the insertion of a retaining screw 32 which is screwed into a threaded hole 33 in the base body 10.
  • the head 34 of the retaining screw 32 designed as a hexagon socket screw is retractable into the clamping element 29 in the clamping element 29 by means of a corresponding recess 35.
  • FIG. 3 In the plan view of the cutting side of the face milling cutter shown in FIG. 3, a partial region is shown as a sectional view, according to the section line A-A of FIG.
  • the fixation of the retaining screw 32 in the base body 10 is shown here as a variant.
  • the retaining screw 32 is held captive on the clamping element 29 by means of a snap ring 36.
  • the threaded hole 33 in the base body 10 has a larger diameter and 5 serves to receive a threaded sleeve 37.
  • the retaining screw 32 is screwed.
  • the threaded sleeve 0 37 can still be screwed in with greater effort, and the retaining screw 32 then finds an exact thread in the threaded sleeve 37 before.
  • distributed over the circumference threaded holes 38 are used to hold balancing screws 39, which are designed as set screws.
  • the cutting edges 18 are both radially over the body 10 over, as is apparent from Figure 3, but they are also axially over the base body 10 via, as is apparent from Figure 4.
  • This means that the face milling cutter can mill both on the face and on the circumference and can also be used as a shoulder cutter.
  • a recess 40 for chip removal is respectively arranged on the free surface of the cutting edge 18 side facing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Abstract

L'invention propose une fraise à surfacer comprenant un corps de base cylindrique (10), qui présente au moins un logement de fraise (11) décalé par rapport à l'axe de rotation pour un élément de fraise (12) formé de manière essentiellement correspondante, pouvant être fixé à celui-ci par l'intermédiaire d'un moyen de retenue, et dont la partie tranchante dépasse de la face avant du corps de base (10) servant au fraisage. L'au moins un logement de fraise (11) disposé dans la zone de périphérie extérieure du corps de base (10) présente une forme cylindrique avec une coupe transversale en forme de segment de cercle et est orienté de manière parallèle à l'axe de rotation du corps de base (10). La corde de segment du segment de cercle spécifie la largeur d'une fente longitudinale sur la périphérie extérieure du corps de base (10) et l'arc du segment présente un angle de plus de 180 °.
EP07724735A 2006-07-29 2007-04-30 Fraise à surfacer Withdrawn EP2061616A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202006011612U DE202006011612U1 (de) 2006-07-29 2006-07-29 Planfräser
PCT/EP2007/003808 WO2008014834A1 (fr) 2006-07-29 2007-04-30 Fraise à surfacer

Publications (1)

Publication Number Publication Date
EP2061616A1 true EP2061616A1 (fr) 2009-05-27

Family

ID=37085668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07724735A Withdrawn EP2061616A1 (fr) 2006-07-29 2007-04-30 Fraise à surfacer

Country Status (3)

Country Link
EP (1) EP2061616A1 (fr)
DE (1) DE202006011612U1 (fr)
WO (1) WO2008014834A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103934491B (zh) * 2014-04-02 2017-07-28 泰州康乾机械制造有限公司 一种铸件机加工方法
TWM502519U (zh) * 2015-02-17 2015-06-11 Chain Headway Machine Tools Co Ltd 可穩定切削加工之銑刀
CN105690244A (zh) * 2016-03-25 2016-06-22 孟书芳 一种两轴自动铣扁机表面打磨头

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000126920A (ja) * 1998-10-22 2000-05-09 Sumitomo Electric Ind Ltd 正面フライスカッタ
DE19947946B4 (de) 1999-10-06 2005-03-17 Muñoz, Gonzalo Tello Fräser zur Bearbeitung von insbesondere transparenten Kunststoffmaterialien
DE202004020267U1 (de) * 2004-12-29 2006-05-04 Gühring, Jörg, Dr. Werkzeug zur spanabtragenden Bearbeitung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008014834A1 *

Also Published As

Publication number Publication date
DE202006011612U1 (de) 2006-09-28
WO2008014834A1 (fr) 2008-02-07

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