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EP3389926A1 - Corps de meulage de masse réduite - Google Patents

Corps de meulage de masse réduite

Info

Publication number
EP3389926A1
EP3389926A1 EP16810357.0A EP16810357A EP3389926A1 EP 3389926 A1 EP3389926 A1 EP 3389926A1 EP 16810357 A EP16810357 A EP 16810357A EP 3389926 A1 EP3389926 A1 EP 3389926A1
Authority
EP
European Patent Office
Prior art keywords
abrasive
inner body
fibers
outer body
fiber
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
EP16810357.0A
Other languages
German (de)
English (en)
Other versions
EP3389926B1 (fr
Inventor
Frank Cichy
Maximilian BÜTTNER
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.)
ThyssenKrupp AG
Original Assignee
ThyssenKrupp AG
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 ThyssenKrupp AG filed Critical ThyssenKrupp AG
Publication of EP3389926A1 publication Critical patent/EP3389926A1/fr
Application granted granted Critical
Publication of EP3389926B1 publication Critical patent/EP3389926B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/16—Bushings; Mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D18/00—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for
    • B24D18/0009—Manufacture of grinding tools or other grinding devices, e.g. wheels, not otherwise provided for using moulds or presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/02—Wheels in one piece
    • B24D7/04—Wheels in one piece with reinforcing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
    • B24D7/16—Bushings; Mountings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D9/00—Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper
    • B24D9/08—Circular back-plates for carrying flexible material

Definitions

  • the present invention relates, according to various aspects, to a sanding base body, a use of a sanding base body and a method for producing a sanding base body.
  • JP11028668 A describes a grinding wheel which has a core of a plurality of layered plate-shaped layers of a fiber-plastic composite. A grinding wheel section is glued to the core. The core also has flange portions on its side surfaces, via which the core can be attached to a shaft. As a result, this should be achieved a low weight, so that a high speed can be achieved during grinding.
  • the invention therefore has the object of specifying a sanding base body, a use of a sanding base body and a method for producing a sanding base body, wherein a cost-effective production can be achieved with low weight.
  • the object is achieved by a grinding base body with a substantially cylindrical outer body for receiving a
  • Abrasive with an inner body for connecting the abrasive base body to a drive, and with a connection structure for mechanical power transmission between the outer body and the inner body, dissolved, wherein the outer body, the inner body and / or the connecting structure at least partially made of a fiber-plastic Composite are formed.
  • a mass-reduced abrasive base body can be provided by the inventive construction of the abrasive body of the outer body, inner body and connecting structure in combination with the use of fiber-plastic composite materials. This is attributed to the fact that by the structure according to the invention in combination with the inventive
  • the substantially cylindrical outer body may advantageously be added to the abrasive.
  • the abrasive may, for example, on the outside of the outer body (releasably) attached, in particular glued to this. Due to the substantially cylindrical outer body can thus a sufficient contact surface for the abrasive and thus a sufficiently large grinding surface can be provided.
  • connection can be achieved, in particular via its inner side, to a drive.
  • the connection can be direct or indirect.
  • the inner body of the connection to a drive shaft.
  • the inner body is preferably arranged at least in sections, preferably completely within the outer body.
  • connection structure is used for the mechanical transmission of force, in particular the torque transmission from the inner body to the outer body.
  • the connection structure can be designed differently, provided that they have a mechanical
  • connection structure preferably extends from the inside of the outer body to the outer side of the inner body.
  • the connecting structure is substantially perpendicular to the inside of the outer body and substantially perpendicular to the outside of the inner body.
  • both the outer body and the inner body and the connecting structure consist of a fiber-plastic composite.
  • the outer body, the inner body and the connecting structure of the same fiber-plastic composite.
  • the outer body, the inner body and the connecting structure of the same fiber-plastic composite.
  • connection structure different fiber-plastic composite materials (such as another fiber or another plastic matrix) are used.
  • the inner body is a substantially cylindrical inner body.
  • a substantially cylindrical inner body can over the inside of the Inner body is provided an advantageous surface for connection to a drive.
  • the substantially cylindrical inner body and the substantially cylindrical outer body are preferably arranged concentrically to one another.
  • the inside of the inner body is preferably formed tapered along its cylinder axis. In this way, a secure connection can be made for example with a drive shaft.
  • the fibers of the fiber-plastic composite of the outer body the fibers of the fiber-plastic composite of the outer body, the
  • Inner body and / or the connecting structure as a scrim, fabric, braid,
  • the fibers of the fiber-plastic composite of both the outer body, as well as the inner body and the connecting structure are formed as described. Due to the described embodiments of the fiber-plastic composite and the resulting
  • Fiber orientation can be taken into account advantageously occurring rotational forces, the acting moments and the stiffness requirements of the abrasive body. As a result, further mass reduction of the abrasive base body can be achieved with high rigidity.
  • the fibers of the fiber-plastic composite of the outer body and / or the inner body are at least partially oriented in the circumferential direction of the respective body. This can advantageously increase the bending and torsional strength of the abrasive body. In particular, it has been found out in this
  • the fibers of the fiber-plastic composite of the outer body, the Inner body and / or the connection structure at least partially oriented along the surface of the respective body.
  • the inner body and / or the connecting structure is constructed in one or more layers.
  • a multi-layer structure of the respective fiber composite plastic by a multi-layer structure of the respective fiber composite plastic, a
  • Claim-based layer structure of the abrasive base body can be achieved, since thereby the rotational forces, the acting moments and the stiffness requirements can be considered and as a result, a loop body can be provided with low mass.
  • the connecting structure is formed as a flat, in particular disk-shaped connecting element.
  • a flat, disk-shaped connecting element may be formed, for example, as a flat disc arranged between the outer body and the inner body, which preferably extends substantially perpendicular to the cylinder axis of the outer body and of the inner body.
  • the abrasive base body can advantageously have a cover, in particular in this embodiment.
  • the cover is preferably provided at one end of the abrasive base body, so that in any case one-sided space between the
  • Outer body and the inner body is covered. This can cause excessive accumulation of sanding dust between the outer body and inner body and
  • connection structure can be prevented.
  • the connection structure has a quasi-isotropic layer structure.
  • uniform properties of the connection structure in particular with regard to stability and elasticity can be achieved.
  • a disc-shaped connecting structure it can be achieved that this behaves like a metallic material.
  • a mass reduction with reliable mechanical properties can be achieved.
  • the quasi-isotropic layer structure can basically be constructed by a different number of (for example unidirectional) layers. However, the quasi-isotropic layer structure preferably comprises at least three layers.
  • the connecting structure comprises a plurality of spoke-like arranged elements.
  • the connecting structure consists of the spoke-like angoerdneten elements.
  • the spoke-like arranged elements may be formed, for example, as struts.
  • the spoke-shaped elements extend in the radial direction between the inner body and the outer body.
  • the spoke-like arranged elements each have a core
  • the outer body, the inner body and / or the connecting structure are constructed from preforms.
  • preforms For example, carbon fiber preforms are used.
  • Preforms are understood in particular to be preforms made of fibers, which are used to form the corresponding regions of the abrasive base body.
  • the outer body, the inner body and the connecting structure are constructed from preforms.
  • Connection structure used different separate preforms.
  • connection structure is bonded to the outer body and / or inner body in a material-locking and / or form-fitting manner.
  • the connection structure is bonded to the outer body and / or inner body in a material-locking and / or form-fitting manner.
  • Connection structure connected to both the inner body and the outer body cohesively and / or positively.
  • the inner body and the outer body cohesively and / or positively.
  • Connection structure the outer body and the inner body made of separate preforms and connected by infiltration with plastic.
  • the fibers of the fiber-plastic composite of the outer body, the inner body and / or the connecting structure comprise inorganic and / or organic reinforcing fibers, in particular at least one of carbon fibers, glass fibers, basalt fibers and aramid fibers.
  • inorganic fibers such as glass fibers or basalt fibers
  • organic fibers such as aramid fibers or
  • Carbon fibers, in particular a high degree of orientation of the fibers can be achieved.
  • the matrix material of the fiber-plastic composite of the outer body, the inner body and / or the connecting structure comprises a thermoset or a thermoplastic.
  • thermosets are the relatively high thermomechanical Strength and low specific gravity advantageous, while thermoplastics, for example, a weldability is given.
  • the abrasive base body comprises a metal bush arranged at least in sections within the inner body.
  • the metallic bush it is possible with advantage to provide a sanding base body with a metallic hub element.
  • the metallic bush is essentially cylindrical.
  • the metallic bushing is designed to taper in the axial direction.
  • the metallic socket can by means of a clamping seat, which
  • the outer body has a greater axial extent compared to the inner body. Under an axial extent is at substantially
  • Cylindrical outer body or inner body in particular understood the extension in the direction of the respective cylinder axis. This results in an asymmetrical design of the base abrasive body, which allows a shortened compared to the outer body inner body, without reducing the grinding surface. Thus, a further mass reduction can be achieved, resulting in a reduction in rotational mass and centrifugal forces during machining and a higher
  • the drive shaft or tool spindle can be shortened, which reduces the levers and the acting moments.
  • the abrasive base body further comprises a on the outer body applied abrasive.
  • the abrasive is formed for example as abrasive coating or as abrasive elements.
  • the abrasive is applied annularly on the outside of the outer body, in particular glued by means of an adhesive layer.
  • a grinding base body according to the first aspect for the abrasive machining of metallic parts, in particular camshafts solved.
  • the abrasive machining in particular the grinding of metallic parts, such as camshafts, large diameters and high speeds of the grinding base body are required. Due to their properties, in particular their low mass, the abrasive base bodies according to the first aspect are particularly suitable for this purpose.
  • the above-mentioned object is achieved by a method for producing a sanding base body, in particular according to the first aspect, the method comprising: forming a substantially cylindrical outer body for receiving an abrasive, forming an inner body for connecting the abrasive -BrundMechs to a drive and forming a
  • Connecting structure at least partially formed of a fiber-plastic composite.
  • the Inner body preferably formed as a substantially cylindrical inner body.
  • the outer body, the inner body and the connecting structure can be formed one after the other or at the same time.
  • the inner body and / or the connecting structure are formed by first fibers are placed on a mold and
  • the fibers are infiltrated with plastic.
  • the structure and the geometry of the abrasive base body can be precisely determined, since the fibers can first be brought as preforms in the desired position and orientation. Subsequently, the fibers can be fixed by plastic infiltration and consolidation.
  • Plastic infiltration can be overpressure assisted or vacuum assisted. In this way, in particular individual preforms can be connected to one another in a material-locking manner.
  • the fibers are already pre-infiltrated applied to the molds, for example as a prepreg.
  • the fibers are pre-impregnated, for example, with a reaction resin.
  • the fibers can then be cured in particular under the action of pressure and temperature.
  • the abrasive base body after the infiltration by removing the
  • Mold removed from the mold. By infiltration was in particular a
  • the molding tool comprises separate molding tool sections for the outer body, the inner body and / or the connecting structure.
  • the molding tool sections are in particular separate parts which can be mounted on one another or connected to one another.
  • a mold section for the inner body, a mold section for the connection structure, and a mold section for the outer body are provided.
  • the fibers for example, as preforms first applied to the corresponding mold sections, for example, be wrapped around them. Subsequently, the mold sections can be mounted. Finally, the fibers can be infiltrated.
  • a metallic bush is arranged and fixed at least in sections within the inner body.
  • a hybrid construction can be achieved, which allows a high stability of the abrasive body in the field of connection to the drive.
  • the inner body on the metallic socket is arranged and fixed at least in sections within the inner body.
  • Fig. La, b a first embodiment of a grinding base body according to the first aspect in a partial and partial longitudinal section;
  • FIG. 1 shows firstly a first exemplary embodiment of a sanding base body 1 according to the first aspect in partial supervision (FIG. 1a) and in the partial longitudinal section (FIG. 1b).
  • the abrasive base body 1 comprises a substantially cylindrical
  • Outer body 2 for receiving an abrasive (not shown).
  • the abrasive can be applied, for example, flat on the outside of the outer body 2.
  • the abrasive base body 1 comprises a substantially cylindrical
  • Inner body 4 for connecting the grinding base body 1 to a drive (not shown) and a connecting structure 6 for mechanical power transmission between the outer body 2 and the inner body 4.
  • the outer body 2 the
  • Inner body 4 and the connection structure 6 are all formed of a fiber-plastic composite, wherein the fibers are each organic reinforcing fibers, in this case carbon fibers. Alternatively or additionally, however, it is also possible to use other fibers, such as glass fibers, basalt fibers or aramid fibers. Of the
  • Plastic or the matrix material of the fiber-plastic composite may be a thermoset or a thermoplastic.
  • the connecting structure 6 is formed here from a plurality of radially outwardly extending spoke-like arranged struts, of which only two struts 6a, 6b are shown here. This has the advantage that due to the recesses a deposition of grinding dust on the connecting structure 6 can be reduced.
  • the struts 6a, 6b, etc. may have a core of foam material to allow a particularly easy variant of the abrasive base body 1.
  • connection structure 6 is in particular materially connected both to the
  • the outer body 2 and the inner body 4 are arranged concentrically and have the common cylinder axis 8.
  • the outer body 2 and the inner body 4 extend from the connecting structure 6 in each case in both directions
  • the fibers of the fiber-plastic composite of the outer body 2, the inner body 4 and the connecting structure 6 are preferably formed as a scrim, fabric, braid, fabric and / or winding structure.
  • the fiber-plastic composite of the outer body 2, the inner body 4 and the connecting structure 6 is preferably constructed in multiple layers.
  • the fibers of the outer body 2, the inner body 4 and the connecting structure 4 are constructed from preforms.
  • a metallic bush 10 is also arranged as a hub element, with which a shaft-hub connection can be made.
  • Inner body 4 was shrunk onto the metallic bushing 10, so that the metallic bush 10 is fixed in the inner body 4 by means of a press fit.
  • the inner body 4 and / or the metallic bushing 10 along the cylinder axis 8 is tapered.
  • FIG. 2 now shows a second exemplary embodiment of a sanding base according to the first aspect in plan view (2a) and in longitudinal section (2b).
  • Embodiment is similar to the embodiment shown in Fig. 1. In this respect, reference is first made to the comments on FIG. 1 and the same reference numerals (in the case of spelled notation) are used. In the following, the differences will be discussed.
  • Connection structure 6 'of the abrasive base executed differently.
  • Connecting structure 6 ' is in this case as a flat, disc-shaped
  • the disk-shaped connecting structure 6 ' has in this case a quasi-isotropic layer structure, whereby the
  • the abrasive base body 1 ' also has a cover 12'.
  • the cover 12 ' is provided at one end of the abrasive base body 1', so that the space between the Outer body 2 'and the inner body 4' is covered. As a result, excessive accumulation of grinding dust between the outer body 2 ', the
  • the abrasive base body can be, for example, the abrasive base body 1 from FIG. 1 or the abrasive base body from FIG. 2.
  • the fibers of the fiber-plastic composite of the outer body 2, 2 'and the inner body 4, 4' are at least partially oriented in the circumferential direction of the respective body.
  • the fibers of the fiber-plastic composite of the outer body 2, 2 ', the inner body 4, 4' and the connecting structure 6, 6 ' are oriented at least partially along the respective surface.
  • FIGS. 4a-d now show a schematic illustration of an exemplary embodiment of a production method according to the third aspect.
  • the abrasive base body shown in FIG. 2 is manufactured. However, that is illustrated
  • Production method also applicable to the production of differently shaped grinding base body such as grinding base 1 transferable.
  • fibers 30 are applied as a disk-shaped preform to form the subsequent connection structure 6, 6 'on a mold section 20 (FIG. 4a).
  • fibers 32 are applied as preforms to form the later inner body 4, 4 'on a cylindrical molding tool section 22 (FIG. 4b).
  • the mold sections 20 and 22 can then be joined together.
  • the tool sections 20, 22 are connected to a further cylindrical mold section 24. Consisting of the mold section
  • the assembled tools 20 and 24 are applied with a braiding process, the fibers 34 for forming the later outer body 2, 2 '(Fig. 4c).
  • an enclosing outer tool (not shown) is mounted, which images the shape-negative, substantially cylindrical contour of the outer body 2, 2 'to be produced.
  • Tools 20, 22, 24 form the mold cavity for the fibers 30, 32, 34.
  • the cylindrical contour can also contain changes in diameter in order to be able to apply stepped or stepped abrasive coatings, without the offset
  • Outer body 2, 2 ', the inner body 4, 4' and the connecting structure 6, 6 ' are formed of a fiber-plastic composite. After infiltration and consolidation, the abrasive base can be removed by removing the individual
  • Mold tool sections 20, 22, 24 are removed from the mold (FIG. 4d)

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Polishing Bodies And Polishing Tools (AREA)

Abstract

L'invention concerne entre autres un corps de meulage (1, 1') comportant un élément extérieur (2, 2') sensiblement cylindrique destiné à recevoir un matériau abrasif, un élément intérieur (4, 4') destiné à relier le corps de meulage (1, 1') à un entraînement et une structure de liaison (6, 6') destinée à transmettre des forces mécaniques entre l'élément extérieur (2, 2') et l'élément intérieur (4, 4'). L'élément extérieur (2, 2'), l'élément intérieur (4, 4') et/ou la structure de liaison (6, 6') sont formés au moins partiellement à partir d'un composite de fibres en matière synthétique.
EP16810357.0A 2015-12-18 2016-12-13 Corps de meulage de masse réduite Not-in-force EP3389926B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015122233.7A DE102015122233A1 (de) 2015-12-18 2015-12-18 Massereduzierter Schleif-Grundkörper
PCT/EP2016/080761 WO2017102707A1 (fr) 2015-12-18 2016-12-13 Corps de meulage de masse réduite

Publications (2)

Publication Number Publication Date
EP3389926A1 true EP3389926A1 (fr) 2018-10-24
EP3389926B1 EP3389926B1 (fr) 2019-10-02

Family

ID=57544437

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16810357.0A Not-in-force EP3389926B1 (fr) 2015-12-18 2016-12-13 Corps de meulage de masse réduite

Country Status (6)

Country Link
US (1) US20180304442A1 (fr)
EP (1) EP3389926B1 (fr)
CN (1) CN108367414A (fr)
DE (1) DE102015122233A1 (fr)
ES (1) ES2764556T3 (fr)
WO (1) WO2017102707A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016105049B4 (de) * 2016-03-18 2018-09-06 Thyssenkrupp Ag Verfahren zur Wiederbelegung eines Schleifwerkzeugs sowie wiederbelegbares Schleifwerkzeug hierzu
AT518908B1 (de) * 2016-08-11 2019-04-15 Tyrolit Schleifmittelwerke Swarovski Kg Trägerkörper für Schleifwerkzeuge
EP4098401A1 (fr) * 2021-06-01 2022-12-07 Hilti Aktiengesellschaft Plateau de meulage pour un disque de meulage d'une machine de meulage et procédé de fabrication

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2581934A (en) * 1949-04-04 1952-01-08 Firestone Tire & Rubber Co Abrading roll
US4184854A (en) * 1978-04-24 1980-01-22 Norton Company Magnetic cores for diamond or cubic boron nitride grinding wheels
US4456577A (en) * 1981-09-25 1984-06-26 Osaka Diamond Industrial Company, Ltd. Methods for producing composite rotary dresser
JPH1128668A (ja) 1997-07-04 1999-02-02 Toyoda Mach Works Ltd 高速研削用砥石車及びその取付方法
DE19812515A1 (de) * 1998-03-21 1999-09-23 M & F Entw & Patentverwertungs Lamellenschleifwerkzeug
IT1306145B1 (it) * 1999-05-21 2001-05-30 Quintilio Lupi Utensile rotativo ad azione combinata abrasiva e a frammentazione perla esecuzione di profili o di tagli su lastre di materiale fragile
KR20030091641A (ko) * 2002-05-27 2003-12-03 구레-노튼 가부시키가이샤 연마용 숫돌
AT502377B1 (de) * 2005-09-26 2007-03-15 Asen Norbert Ing Grundkörper für ein rotierendes schleif- bzw. schneidwerkzeug sowie daraus hergestelltes schleif- bzw. schneidwerkzeug
CN201483378U (zh) * 2009-09-01 2010-05-26 杜宝通 快速装卸式金刚石磨轮
DE102012005085A1 (de) * 2012-03-13 2013-09-19 Dr. Müller Diamantmetall AG Werkzeug zum Bearbeiten von Materialien
CN103343868B (zh) * 2013-06-27 2015-04-22 北京卫星制造厂 一种复合材料星敏支架制备方法

Also Published As

Publication number Publication date
US20180304442A1 (en) 2018-10-25
CN108367414A (zh) 2018-08-03
WO2017102707A1 (fr) 2017-06-22
EP3389926B1 (fr) 2019-10-02
DE102015122233A1 (de) 2017-06-22
ES2764556T3 (es) 2020-06-03

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