EP3600771B1 - Verbessertes schleifrad - Google Patents

Verbessertes schleifrad Download PDF

Info

Publication number
EP3600771B1
EP3600771B1 EP17715119.8A EP17715119A EP3600771B1 EP 3600771 B1 EP3600771 B1 EP 3600771B1 EP 17715119 A EP17715119 A EP 17715119A EP 3600771 B1 EP3600771 B1 EP 3600771B1
Authority
EP
European Patent Office
Prior art keywords
abrading wheel
grooves
rim
grit
circular core
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.)
Active
Application number
EP17715119.8A
Other languages
English (en)
French (fr)
Other versions
EP3600771A1 (de
Inventor
Kim Bluhme KJÆRGAARD
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.)
B&J Rocket Sales AG
Original Assignee
B&J Rocket Sales 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 B&J Rocket Sales AG filed Critical B&J Rocket Sales AG
Priority to PT211955109T priority Critical patent/PT3957438T/pt
Priority to DK21195510.9T priority patent/DK3957438T3/da
Priority to ES21195510T priority patent/ES2924097T3/es
Priority to EP22171607.9A priority patent/EP4074459A1/de
Priority to EP21195510.9A priority patent/EP3957438B1/de
Priority to PL17715119T priority patent/PL3600771T3/pl
Publication of EP3600771A1 publication Critical patent/EP3600771A1/de
Application granted granted Critical
Publication of EP3600771B1 publication Critical patent/EP3600771B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • B24D5/10—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor with cooling provisions, e.g. with radial slots
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D3/00—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents
    • B24D3/02—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent
    • B24D3/04—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic
    • B24D3/06—Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially inorganic metallic or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
    • 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 to abrading wheels. More specifically, the present invention relates to abrading wheels for grinding a product or finishing a surface of a rubber product to form a desired surface smoothness.
  • abrading wheels are characterised by their ability to grind products or to tear products apart.
  • such products may be rubber tires or the like, where there is a desire to refurbish or recycle material.
  • a use situation usually involves rotating the abrading wheel at high speed and applying the product to be grinded onto grit disposed onto an outer surface of the abrading wheel. Thereby, the part of the product in contact with the abrading wheel is disintegrated, and the abrading wheel may either be used to smoothen the surface of the remaining part of the product, or the abrading wheel may be used to disintegrate the entire product.
  • several problems are known to occur. The particles from the product being grinded may quickly accumulate in the grit, thereby leaving the abrading wheel useless.
  • the abrading surface will turn into a smooth surface over time due to the accumulation of particles in the grit.
  • the grit, and the surface onto which said grit is disposed may heat up due to friction between the abrading wheel and the product being grinded.
  • the products being grinded may behave differently at elevated temperatures or the abrading wheel may attain temperatures exceeding what is considered safe.
  • US2002/035890A1 discloses a metal bonded drilling tool which is improved in grinding performance with a long life and can drill a hole in a dry condition without the need for water.
  • the metal bonded drilling tool includes a cylindrical body having an open front end portion, a shank integral with the cylindrical body and having a threaded hole for use in mounting the tool to a rotary tool, and numerous abrasive grains bonded to a front edge of the cylindrical body and to inner and outer cylindrical surfaces of the front end portion of the cylindrical body by a bond member formed primarily of copper alloy.
  • US3579928A discloses an abrading wheel having oblique throughgoing holes in the rim and a grit material provided on the outer surface of the rim. US3579928A does not disclose any overhang of the grit material and it does not disclose any openings in the central core. An overhang will be counter productive to the purpose of the throughgoing holes of the solution illustrated in US3579928A .
  • an abrading wheel comprising a circular core having an outer periphery, a rim arranged orthogonally to said circular core on said outer periphery, said rim comprising an inner surface and an outer surface, and a grit material disposed on at least part of said outer surface, and where a plurality of openings are arranged in said core for providing an airflow directed towards said inner surface, and wherein the outer surface of said rim is provided with a plurality of grooves, and where a main part of said grit material is disposed on said outer surface of said rim on spaces between said grooves.
  • a circular core is meant a unitary, solid, continuous core of metal.
  • the circular core is made from steel.
  • the core has a thickness ensuring stability when rotating the abrading wheel at operation speeds. The thickness should correspond to the diameter and use of the tool, but may be from 2 to 6 mm.
  • the diameter of the circular core may be between 50 mm and 300 mm, depending on use.
  • An outer periphery is inevitably a part of a circular core as defined.
  • a rim is meant a ribbon-shaped metal comprising a width greater than the thickness of the circular core and a length equal to the circumference of the outer periphery of said circular core. The width of the rim defines the working width of the abrading wheel.
  • the width of the rim may vary according to the use, but may be at least 20 mm or may be at least 200 mm. However, it should be noted that the width and in fact the entire abrading wheel may be scaled according to the desired use.
  • the rim is mounted along an edge to the outer periphery.
  • the rim is a circular element mounted onto said outer periphery.
  • a grit material is meant a material preferably having a hardness substantially higher than the product which the abrading wheel is meant to grind.
  • the grit material constitutes grit.
  • the grit material may be tungsten carbide.
  • the grit material may be formed as small grains comprising a plurality of sharp spikes, or it may be other structures comprising sharp edges capable of grinding products.
  • the abrading wheel is cooled during operation, heat is more easily dissipated, and accumulation of particles from the product being grinded is minimised.
  • Due to the plurality of openings in the circular core air is forced onto the inner surface of the rim thereby providing air cooling.
  • Due to the presence of grooves on the outer surface the surface area of said outer surface is inevitably increased thereby increasing the dissipation of heat and providing additional cooling to the abrading wheel.
  • By disposing a main part of the grit material on spaces between the grooves said grooves are kept free of grit material thereby minimising the risk of accumulation of material or particles in said grooves.
  • the combination of cooling the abrading wheel and reducing the risk of accumulation of particles further increases the lifetime of said abrading wheel.
  • the circular core may comprise a central axis and a central aperture for mounting the abrading wheel on a rotation tool.
  • a central axis is meant an axis arranged orthogonally to the plane, wherein the outer periphery lies, and where said axis is arranged in the centre of the circular core. Thereby, the central axis is positioned equidistant from the outer periphery of the circular core.
  • a central aperture is meant a through-going opening arranged in the centre of the circular core.
  • the central aperture is arranged in a displaced depression, said depression being an integral part of the circular core.
  • the depression is displaced such that the central aperture is positioned in a position providing the highest amount of stability to the abrading wheel when said abrading wheel is rotating at operational speeds. Such position may be in a central position of the abrading wheel when considering the abrading wheel as a whole, i.e. centrally to the circular hub and midway of the width of the rim.
  • the abrading wheel may be mounted on a rotation tool and set into rotation around the central axis.
  • the central aperture may have a shape corresponding to a shape of the rotation tool, such that rotation is secure and efficient.
  • the central aperture comprises at least one indentation for engaging with a corresponding protrusion on the rotation tool, such that the abrading wheel is fastened securely.
  • the cross section of the grooves may be V-shaped.
  • the grooves extend into the outer surface of the rim.
  • the cross section of the grooves being V-shaped, particles are less likely to accumulate in the grooves, since the surface area in the vicinity of the vertex of the groove is minimised compared to other shapes, such as U-shaped grooves.
  • the plurality of grooves may be arranged in a helix having an axis collinear and coinciding with the central axis.
  • the plurality of grooves may be tilted relative to an edge of the rim.
  • the grooves are oblique to a normal cutting angle between the product to be grinded and the outer surface of the rim.
  • a normal cutting angle may be defined as the cutting angle, wherein the product to be grinded is applied orthogonally to the outer surface of the rim. That means normal incident of the product to be grinded onto the outer surface of the rim.
  • the grooves may be tilted relative to an edge of the rim, said edge being collinear with the outer periphery of the central core.
  • a larger amount of grit material disposed on the spaces between the grooves makes impact onto the product to be grinded.
  • the plurality of grooves arranged in a helix provide clearance for a majority of the grit, i.e. a majority of the grit is arranged aggressively relative to the product to be grinded, such that the efficiency of the grinding process in increased.
  • being arranged aggressively is meant that shadowing of grains of the grit material is minimised with respect to subsequent grains when the abrading wheel is rotating.
  • an increased free space is provided for the grit material to come into contact with the product to be grinded.
  • the arrangement of the grooves along the direction of rotation provides an enhanced free flow of particles, such that accumulation in the grit of said particles originating from the product being grinded is minimised.
  • Said free flow of particles causes said particles to be guided away from the abrading wheel along the grooves.
  • the particles formed from the grinding process are guided in a route given by the arrangement of the grooves, and where said arrangement of grooves are in a helix, the route leads the particles out of the abrading wheel.
  • the abrading wheel has an inherent self-clearing effect. In combination with the aggressively arranged grit due to the helix or tilt arrangement, the abrading wheel experiences an increased lifetime.
  • the plurality of grooves may be arranged parallel to each other and parallel to the outer periphery of the circular core.
  • the grooves are arranged orthogonally to the central axis of the abrading wheel, i.e. the central axis of rotation.
  • grains of the grit material disposed on spaces between the grooves may be said to shadow subsequent grains of same grit material, i.e. the grinding efficiency of the abrading wheel is lowered which may be desired in certain use.
  • the resistance between the grit and product to be grinded is reduced. That means that due to the grooves and accompanying spaces with grit material being aligned to the normal cutting angle, a smaller amount of grit material is exposed to the product to be grinded at a given time. Thus, the resistance is reduced which may be useful for certain products or situations.
  • the rim may be a ribbon mounted onto the outer periphery of the circular core along an edge of said ribbon.
  • a ribbon is meant a primarily rectangular piece of material bent to fit the outer periphery of the circular core.
  • the ribbon comprises two side edges and two end edges, said end edges being joined to form a circular ribbon.
  • One of said side edges are mounted on the outer periphery of the circular core, such that the abrading wheel resembles a bowl.
  • the thickness of the circular core may be smaller than the width of the rim, such that the inner surface of the rim is exposed to air.
  • the mounting may be through welding, or the mounting may be through means of pressing, stamping, or casting the abrading wheel in a single piece.
  • a tongue may be attached to each opening of the circular core, a plurality of tongues thereby being arranged in said circular core.
  • the tongues may be formed from excess material bent away from the opening, the tongues thereby being an integral part of the circular core.
  • the tongues are oriented such that air is forced onto the inner surface of the rim, thereby providing air cooling to the abrading wheel.
  • a tongue By a tongue is meant a partially free piece of material freed from the circular core.
  • a tongue and an opening may be formed simultaneously by making appropriate cuts in the circular core, followed by bending an uncut edge away from the plane of the circular core.
  • the tongue is attached to the circular core through the bow and may therefore be considered an integral part of the circular core.
  • the openings may be said to comprise integrated tongues.
  • the tongues may be said to be cooling tongues.
  • the tongues may be regarded as wings.
  • the plurality of tongues are bent towards an inner volume partly defined by the inner surface of the rim and the circular core.
  • the tongues are arranged in a homogenous pattern, such that the tongues are positioned identically relative to the opening for all openings provided in the circular core.
  • the openings are quasi-quadratic and the uncut edge is oriented orthogonally to the outer periphery of the circular hub.
  • passive means for guiding an air flow onto the inner surface of the rim is realised.
  • passive means is meant that said air flow is pulled into the abrading wheel and guided onto the inner surface of the rim by the combination of high rotation speed of the abrading wheel and the orientation of the tongues. Said orientation of the tongues is chosen to maximise the air flow onto the inner surface of rim during high speed rotation of the abrading wheel.
  • the passive means for guiding an air flow onto the inner surface of the rim provides passive cooling means of the abrading wheel.
  • said passive cooling means causes a lower working temperature of the abrading wheel.
  • the grit material may form an overhang above said grooves.
  • an overhang is meant that free space is provided between the outer surface of the rim and parts of the grit material disposed primarily on the spaces between the grooves.
  • the combined surface area of grit material exposed to the surroundings is increased compared to a situation where no overhang is provided.
  • a larger part of said product may be in contact with the grit thereby increasing the efficiency of the abrading wheel.
  • the amount of grit may be increased by allowing an overhang while maintaining the presence of grit-free grooves for avoiding accumulation of particles as described earlier.
  • an increased surface area of grit material results in an increased amount of heat dissipation thereby increasing the cooling abilities of the abrading wheel.
  • the grit material may be tungsten carbide.
  • the grit material has a hardness superior to most materials which it is expected to grind.
  • Materials possessing similar hardness such as silicon carbide, are foreseen within the scope of the invention.
  • the grit size may be between 14 and 220.
  • the grit size disclosed is standardised according to Federation of European Producers of Abrasives (FEPA).
  • a grit size of 14 corresponds to a particle size (mean diameter) of 1.47 mm
  • a grit size of 220 corresponds a particle size (mean diameter) of 0.058 mm.
  • the grit may be varied according to use and the desired smoothness of the grinded product.
  • the abrading wheel may be mounted onto a rotation tool, said rotation tool being capable of providing rotation around a central axis of the abrading wheel.
  • the mounting is done by engaging a rotational part of the rotation tool in the central aperture and the indentation, where said central aperture and indentation corresponds to the dimension of the rotational tool and a protrusion in said rotational part, respectively.
  • the abrading wheel may be set in an efficient and secure rotation.
  • Fig. 1 is a perspective view of a part of an abrading wheel 100 according to the invention.
  • the abrading wheel 100 comprises a circular core 101 having an outer periphery 103 and a central aperture 105. Said central aperture 105 is arranged in a depression 109. Said depression 109 protrudes into an inner volume (not shown) partly defined by said circular core 101 and a rim 111 arranged orthogonally to said core 101 on said outer periphery 103.
  • the abrading wheel 100 may be said to be bowl-shaped with a central depression 109.
  • the depression 109 is an integral part of the core 101 therefore being considered as part of the core 101 in this context.
  • the central aperture 105 comprises at least one indentation 107 for mounting the abrading wheel 100 securely onto a rotation tool (not shown).
  • the indentation 107 may be formed to correspond to a protrusion on said rotation tool (not shown).
  • Said rotation tool may be used to rotate the abrading wheel 100 around a central axis L by engaging with the central aperture 105 and the at least one indentation 107.
  • the rim 111 may be either mounted through e.g. welding onto the outer periphery 103 of the core 101, or the combined rim 111 and core 101 may be formed from a single piece of material, such that the outer periphery 103 is formed when bending/stamping said single piece of material.
  • the core 101 and rim 111 are formed in a casting process.
  • the core 101 is equipped with a plurality of openings 121.
  • said openings 121 are arranged equiangularly in a circular pattern at a fixed distance from a centre point of the central opening 105.
  • the openings 121 are equipped with tongues 123, said tongues 123 preferably being an integral part of the core 101 and formed from bending the material along an uncut edge 124.
  • the openings 121 may be rectangular, such that the tongues 123 are formed from cutting along three edges thus leaving a fourth edge uncut and thereby allowing said fourth edge to be bent.
  • the tongues 123 are bent towards the inner volume (not shown).
  • the tongues 123 are bent evenly for all openings 121, such that a homogenous pattern of the openings 121 and tongues 123 is formed.
  • the tongues and accompanying openings draw in an air flow, such that said air is forced onto an inner surface (not shown) of the rim 111.
  • said air flow provides air cooling of the abrading wheel. Air cooling is essential when using the abrading wheel 100 for grinding purposes, where heating may occur due to friction.
  • the rim 111 is arranged orthogonally to the plane of the core 101, i.e. the rim extends in a direction parallel to the central axis L.
  • the rim comprises an outer surface 113 and an inner surface (not shown).
  • the inner surface is oriented towards the inner volume (not shown) of the abrading wheel 100 partly defined by the core 101 and the rim 111.
  • the outer surface 113 comprises a plurality of grooves 131, for example carved into said outer surface. Said plurality of grooves 131 twists around the central axis L.
  • the grooves 131 are arranged in a helix with an axis collinear and coinciding with the central axis L.
  • the grooves 131 are parallel to each other and to the outer periphery 103 of the core 101.
  • the grooves 131 are tilted relative to the outer periphery 103.
  • intermediate protruding spaces 132 are formed, said spaces 132 inevitably having the same course, e.g. a helix, as the grooves 131.
  • a grit material 141 is disposed primarily onto said spaces 132 thereby leaving the grooves 131 free of grit material 141. See Fig. 5a and Fig. 6a for a cross-sectional view of the grooves 131, the spaces 132 and the disposed grit material 141.
  • Said grit material 141 is made from a hard material such as tungsten carbide having a hardness of 9 on the Mohs-scale.
  • the grit material 141 grinds said product. Due to the absence of grit material 141 in the grooves 131, particles grinded off the applied product are less likely to accumulate in the grooves thereby increasing the lifetime of the abrading wheel 100. In otherwords, particles entering the grooves 131 are free to move and eventually escape said grooves 131, contrary to the case wherein grit material 141 would be disposed in the grooves 131, whereby particles would get trapped and accumulate more easily.
  • the grooves 131 and accompanying intermediate spaces 132 are arranged in a helix or tilted relative to the outer periphery 103, a larger amount of grit material 141 makes contact with the product to be grinded at any given time during rotation of the abrading wheel 100, assuming the product makes normal incident onto the rim 111.
  • the helix arranged or tilted grooves 131 and spaces 132 provide an increased free space for a product making contact to the grit material 132 disposed in the spaces 132.
  • the grinding efficiency of the abrading wheel 100 is increased.
  • grooves 131 and the accompanying intermediate spaces 132 being arranged in a helix or tilted relative to the outer periphery 103 are guided out of the abrading wheel.
  • grooves 131 arranged in a helix or tilted inevitably comprise ends 133 terminating along an edge of the rim 111, where said ends 133 allow the particles to escape the abrading wheel 100.
  • grooves 131 further increases the surface area of the abrading wheel 100 which in turn increases the dissipation of heat and thereby increases the cooling capabilities of said abrading wheel 100.
  • Fig. 2 is a perspective view of the part of the abrading wheel 100 of Fig. 1 shown from another angle.
  • the inner volume partly defined by the core 101 and the rim 111 is exposed.
  • the inner surface 115 of the rim is shown in this view.
  • the depression 109 protrudes into said inner volume.
  • the central aperture 105 and the indentation 107 are partly visible.
  • the tongues 123 are shown to be bent into the inner volume along an uncut edge 124.
  • the openings 121 are shown to be cut along three edges 221, 222, 223, thereby leaving the uncut edge 124 uncut.
  • the tongues 123 are all bent along the same uncut edge 124 relative to the core 101 thereby forming a homogenous pattern along the entire diameter along which the openings 121 are arranged.
  • the uncut edge 124 is orthogonal to the rim 111.
  • a grit material 141 is disposed on spaces between a plurality of grooves (not shown in this embodiment) on the outer surface 113 of the rim 111. The grit material 141 is shown in further detail in Fig. 5 and Fig. 6 .
  • Fig. 3 shows a top view of the abrading wheel 100.
  • the top view exposes the inner volume.
  • the direction of the central axis L serves as reference to Fig. 1 .
  • the plurality of openings 121 is shown without tongues 123. However, it should be noted that in the case of said tongues 123 being an integral part of the core 101, it is not optional to detach or attach said tongues 123.
  • the plurality of openings 121 is shown to be equiangularly spaced on the core 101 around the central axis L.
  • the central aperture 105 is shown to be arranged symmetrically around the central axis L.
  • the abrading wheel 100 is shown with two indentations 107, 107', for improved stability when mounting the abrading wheel onto a rotation tool (not shown).
  • the depression 109 is indicated by a dotted line.
  • the grit material 141 is shown disposed on an outer surface 113 of the rim 111. Three cross sections, A-A, B-B, and C-C, are indicated in Fig. 4 and described in further detail below.
  • Fig. 4 shows the cross sections indicated in Fig. 3 .
  • Fig. 4a illustrates the cross section A-A comprising two of the plurality of openings 121.
  • the tongues 123 are shown to be an integral part of the core 101 and being bent along an uncut edge 124 indicated by a dotted line.
  • Fig. 4b illustrates the cross section B-B.
  • the tongue 123 attached to the opening 121 is shown as a displaced dotted box due to the choice of viewing angle.
  • the rim 111 is shown being arranged orthogonally to the core 101.
  • An edge of the rim 101 is shown to be mounted onto the outer periphery 103 of the core 101, the rim 111 thereby forming an acute angle of 90 degrees and an obtuse angle of 270 degrees relative to the core 101.
  • the rim 111 comprises a plurality of grooves 131 arranged in the outer surface 113.
  • the plurality of grooves 131 are separated by a plurality of spaces 132.
  • a grit material 141 is disposed onto said spaces 132.
  • Fig. 4c illustrates the cross section C-C.
  • the abrading wheel is rotationally symmetric around the central axis L.
  • the direction of the central axis L corresponds to the direction given from Fig. 1 .
  • the depression 109 protrudes towards the inner volume partly formed by the core 101 and the rim 111. More specifically, the depression 109 displaces the central aperture 105 towards a midway point defined from the width of the rim 111. Thereby, stability of the abrading wheel 100 is increased when said abrading wheel 101 is exposed to rotational forces.
  • Fig. 5 and Fig. 6 show two possible excerpts of the outer surface 113.
  • the orientation of the excerpts relative to the rim 111 is indicated by the directions x and z which are further defined in Fig. 1 .
  • a cross view of each excerpt is shown in Fig. 5a and Fig 6a .
  • the excerpts are examples of possible arrangements of the grooves 131 and accompanying spaces 132 thereby not limiting the scope of the invention.
  • Fig. 5 illustrates an excerpt of an outer surface 113 comprising a large separation of grooves 131, i.e. large spaces 132. Further, the grooves 131 and the accompanying spaces 132 are tilted at an angle 1 relative to the x-direction. The tilt forms a helix along the circumference of the rim 111 and around an axis coinciding with the central axis L (not shown).
  • the grit material 141 is disposed on the spaces 132, such that the grooves 131 are free of grit material 141.
  • a shaded triangle indicates a possible impact area 150 for a product to be grinded by the abrading wheel 100.
  • a product making normal incident i.e.
  • Fig. 5a illustrates a cross-sectional view of the excerpt in Fig. 5 .
  • the grooves 131 are V-shaped as illustrated.
  • the grit material 141 overhangs parts of the grooves 131 illustrated by the overhang 142.
  • Fig. 6 and Fig. 6a (cross-sectional view) illustrate an excerpt of an outer surface 113 comprising a small separation of grooves 131, i.e. narrow spaces 132. Further, the tilt given by the angle 1 is smaller than the excerpt illustrated in Fig. 5 .
  • Fig. 7 illustrates a close-up cross-sectional view of a V-shaped groove 131 and grit material 141 disposed primarily on intermediate spaces 132 between said grooves 131. It is noted how an overhang 142 of grit material 141 is formed, such that free space is provided between the slopes of the groove and said grit material 141.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Braking Arrangements (AREA)

Claims (9)

  1. Schleifscheibe, umfassend
    einen kreisförmigen Kern (101) mit einem Außenumfang (103),
    einen Rand (111), der orthogonal zu dem kreisförmigen Kern an dem Außenumfang angeordnet ist, wobei der Rand eine innere Oberfläche (115) und eine äußere Oberfläche (113) umfasst, und
    ein Körnungsmaterial (141), das auf mindestens einem Teil der äußeren Oberfläche (113) angeordnet ist,
    wobei die äußere Oberfläche (113) des Randes (111) mit einer Vielzahl von Rillen (131) versehen ist, die um eine zentrale Achse (L) der Schleifscheibe gedreht und in einer Helix angeordnet oder relativ zum Außenumfang (103) geneigt sind, wobei die Rillen im Wesentlichen frei von Körnungsmaterial sind, und wobei ein Hauptteil des Körnungsmaterials (141) auf der äußeren Oberfläche des Randes auf Flächen (132) zwischen den Rillen angeordnet ist, wodurch Partikel, die von einem zu schleifenden Produkt gebildet werden, entlang der Rillen von der Schleifscheibe weggeführt werden,
    dadurch gekennzeichnet, dass eine Vielzahl von Öffnungen (121) in dem Kern (101) angeordnet sind, um einen Luftstrom bereitzustellen, der auf die innere Oberfläche (115) gerichtet ist, und eine Zunge, die an jeder Öffnung des kreisförmigen Kerns angebracht ist, wodurch mehrere Zungen in dem kreisförmigen Kern angeordnet sind, wobei die Zungen so ausgerichtet sind, dass Luft auf die Innenfläche des Randes gedrückt wird, wodurch eine Luftkühlung der Schleifscheibe bereitgestellt wird.
  2. Schleifscheibe nach Anspruch 1, wobei der kreisförmige Kern eine Mittelachse und eine zentrale Öffnung zum Montieren der Schleifscheibe an einem Rotationswerkzeug umfasst.
  3. Schleifscheibe nach Anspruch 1 und 2, wobei der Querschnitt der Rillen V-förmig ist.
  4. Schleifscheibe nach einem der vorhergehenden Ansprüche, wobei der Rand ein Band ist, das an dem Außenumfang des kreisförmigen Kerns entlang einer Kante des Bandes angebracht ist.
  5. Schleifscheibe nach einem der vorhergehenden Ansprüche, wobei die Zungen aus überschüssigem Material gebildet sind, das von den Öffnungen weggebogen ist, wobei die Zungen dadurch ein integraler Bestandteil des kreisförmigen Kerns sind.
  6. Schleifscheibe nach einem der vorhergehenden Ansprüche, wobei das Körnungsmaterial einen Überhang über den Rillen bildet.
  7. Schleifscheibe nach einem der vorhergehenden Ansprüche, wobei das Körnungsmaterial Wolframcarbid ist.
  8. Schleifscheibe nach einem der vorhergehenden Ansprüche, wobei die Korngröße zwischen 14 und 220 liegt, wobei eine Korngröße von 14 einer Partikelgröße mit einem mittleren Durchmesser von 1,47 mm entspricht und eine Korngröße von 220 einer Partikelgröße mit einem mittleren Durchmesser von 0,058 mm entspricht.
  9. Schleifscheibe nach einem der vorhergehenden Ansprüche, wobei die Schleifscheibe auf einem Rotationswerkzeug montiert ist, wobei das Rotationswerkzeug in der Lage ist, eine Rotation um eine Mittelachse der Schleifscheibe bereitzustellen.
EP17715119.8A 2017-03-31 2017-03-31 Verbessertes schleifrad Active EP3600771B1 (de)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PT211955109T PT3957438T (pt) 2017-03-31 2017-03-31 Roda abrasiva melhorada
DK21195510.9T DK3957438T3 (da) 2017-03-31 2017-03-31 Forbedret slibeskive
ES21195510T ES2924097T3 (es) 2017-03-31 2017-03-31 Rueda de abrasión mejorada
EP22171607.9A EP4074459A1 (de) 2017-03-31 2017-03-31 Meule à roder améliorée
EP21195510.9A EP3957438B1 (de) 2017-03-31 2017-03-31 Verbessertes schleifrad
PL17715119T PL3600771T3 (pl) 2017-03-31 2017-03-31 Ulepszona tarcza ścierna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2017/057724 WO2018177541A1 (en) 2017-03-31 2017-03-31 Improved abrading wheel

Related Child Applications (4)

Application Number Title Priority Date Filing Date
EP22171607.9A Division EP4074459A1 (de) 2017-03-31 2017-03-31 Meule à roder améliorée
EP21195510.9A Division-Into EP3957438B1 (de) 2017-03-31 2017-03-31 Verbessertes schleifrad
EP21195510.9A Division EP3957438B1 (de) 2017-03-31 2017-03-31 Verbessertes schleifrad
EP21186309.7 Division-Into 2021-07-19

Publications (2)

Publication Number Publication Date
EP3600771A1 EP3600771A1 (de) 2020-02-05
EP3600771B1 true EP3600771B1 (de) 2022-03-30

Family

ID=58464553

Family Applications (3)

Application Number Title Priority Date Filing Date
EP17715119.8A Active EP3600771B1 (de) 2017-03-31 2017-03-31 Verbessertes schleifrad
EP21195510.9A Active EP3957438B1 (de) 2017-03-31 2017-03-31 Verbessertes schleifrad
EP22171607.9A Withdrawn EP4074459A1 (de) 2017-03-31 2017-03-31 Meule à roder améliorée

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP21195510.9A Active EP3957438B1 (de) 2017-03-31 2017-03-31 Verbessertes schleifrad
EP22171607.9A Withdrawn EP4074459A1 (de) 2017-03-31 2017-03-31 Meule à roder améliorée

Country Status (12)

Country Link
US (1) US20210162565A1 (de)
EP (3) EP3600771B1 (de)
CN (1) CN110621443A (de)
BR (1) BR112019019667B1 (de)
CA (1) CA3056693C (de)
DK (2) DK3957438T3 (de)
ES (2) ES2915555T3 (de)
MX (1) MX2019011498A (de)
NZ (1) NZ757271A (de)
PL (2) PL3957438T3 (de)
PT (2) PT3957438T (de)
WO (1) WO2018177541A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3134326B1 (fr) 2022-04-07 2024-03-15 Yona Chocard Dispositif de ventilation pour meule abrasive et meule abrasive comprenant un tel dispositif de ventilation

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2049874A (en) * 1933-08-21 1936-08-04 Miami Abrasive Products Inc Slotted abrasive wheel
US2047649A (en) * 1935-11-06 1936-07-14 Harry G Robinson Abrasive wheel
US3579928A (en) * 1969-07-14 1971-05-25 Gerhard R Held Self-air cooling abrading wheel
US3916579A (en) * 1975-02-10 1975-11-04 Tunco Manufacturing Inc Slotted abrasive wheel
US4516560A (en) * 1982-07-29 1985-05-14 Federal-Mogul Corporation Abrasive cutting wheel and method of cutting abradable material
JPH052293Y2 (de) * 1986-05-30 1993-01-20
IT232262Y1 (it) * 1993-09-24 1999-12-17 Quintilio Lupi Mola a base elastica per la levigatura e lucidatura di profili toroidali in materiali duri.
US5611724A (en) * 1995-12-01 1997-03-18 General Electric Company Grinding wheel having dead end grooves and method for grinding therewith
US6007415A (en) * 1995-12-08 1999-12-28 Norton Company Sanding disks
FR2752762B1 (fr) * 1996-08-29 1998-10-02 Snecma Meule de rectification avec arrosage incorpore
JP4566375B2 (ja) 2000-09-26 2010-10-20 天龍製鋸株式会社 メタルボンド工具
US20050064799A1 (en) * 2003-09-24 2005-03-24 Inland Diamond Products Company Ophthalmic roughing wheel
JP5034427B2 (ja) * 2006-10-12 2012-09-26 株式会社ジェイテクト 研削加工における研削液の動圧開放方法、その方法を利用した研削方法およびその研削方法に用いる砥石
JP5100225B2 (ja) * 2006-11-06 2012-12-19 株式会社ジェイテクト 傾斜溝入り砥石及びその製造方法
CN101386155A (zh) * 2008-07-25 2009-03-18 浙江迪邦达轴承有限公司 大接触面磨削用砂轮
CN101890678B (zh) * 2009-05-19 2011-09-28 好来化工(中山)有限公司 一种磨轮及带有该磨轮的磨刷装置
US8597079B2 (en) * 2011-01-07 2013-12-03 Inland Diamond Products Company Abrasive wheel with closed profiles in cutting surface
KR20150083733A (ko) * 2014-01-10 2015-07-20 주식회사 세한텍 유리 시트 가공용 연마 휠
CN205218870U (zh) * 2015-12-25 2016-05-11 郑州磨料磨具磨削研究所有限公司 一种新型结构的金刚石磨头

Also Published As

Publication number Publication date
MX2019011498A (es) 2019-11-01
PT3600771T (pt) 2022-06-17
EP3600771A1 (de) 2020-02-05
DK3600771T3 (da) 2022-05-09
CA3056693C (en) 2022-05-03
CN110621443A (zh) 2019-12-27
US20210162565A1 (en) 2021-06-03
PL3957438T3 (pl) 2022-08-16
BR112019019667A2 (pt) 2020-04-22
ES2915555T3 (es) 2022-06-23
CA3056693A1 (en) 2018-10-04
PL3600771T3 (pl) 2022-06-20
DK3957438T3 (da) 2022-08-29
EP3957438B1 (de) 2022-06-15
WO2018177541A1 (en) 2018-10-04
EP3957438A1 (de) 2022-02-23
PT3957438T (pt) 2022-08-17
BR112019019667B1 (pt) 2022-09-27
EP4074459A1 (de) 2022-10-19
NZ757271A (en) 2022-02-25
ES2924097T3 (es) 2022-10-04

Similar Documents

Publication Publication Date Title
EP2997223B1 (de) Strassenbeseitigungssystem mit polykristallinen diamantpresskörpern
WO2015016144A1 (ja) フライス用インサートおよび刃先交換式フライス
EP3600771B1 (de) Verbessertes schleifrad
EP2403683B1 (de) Schleifscheibe
US20150147945A1 (en) Adaptable Abrasive Cutting Assembly for Sharpener
US20030209125A1 (en) Circular cut-off saw blade
JP6364717B2 (ja) フライス用インサートおよび刃先交換式フライス
US20050113003A1 (en) Method for forming a cutting edge along an edge portion of a blade stock
JP5953173B2 (ja) 切削工具
KR100579938B1 (ko) 방열보강구조를 구비한 다이아몬드커터
JP5994800B2 (ja) メタルソー及びそのメタルソーを用いた加工方法
CN210452383U (zh) 高散热磨砂轮
JP3111998U (ja) ダイヤモンドカッター
ES1287709U (es) Rueda de abrasion mejorada
JP4756242B2 (ja) 研削砥石
CN218254660U (zh) 一种金刚石磨盘
JP2007021710A (ja) ブレード
TWM547449U (zh) 砂輪切割片
CN214765852U (zh) 一种粉碎设备的碟片结构
CN211466986U (zh) 一种风火轮齿金刚石圆锯片
JP6109717B2 (ja) 切り粉破砕装置、および切り粉破砕刃
KR102631378B1 (ko) 차량용 브레이크 냉각 유니트
CN2813997Y (zh) 自散热刹车毂
CN207229633U (zh) 一种中心阵列打孔划线双层刹车盘
CN207634562U (zh) 一种打孔划线单层刹车盘

Legal Events

Date Code Title Description
REG Reference to a national code

Ref country code: DE

Ref legal event code: R138

Ref document number: 202017007316

Country of ref document: DE

Free format text: GERMAN DOCUMENT NUMBER IS 602017055174

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20191029

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20210319

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTC Intention to grant announced (deleted)
INTG Intention to grant announced

Effective date: 20210805

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602017055174

Country of ref document: DE

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1478735

Country of ref document: AT

Kind code of ref document: T

Effective date: 20220415

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: FI

Ref legal event code: FGE

Ref country code: DK

Ref legal event code: T3

Effective date: 20220505

REG Reference to a national code

Ref country code: NL

Ref legal event code: FP

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: PT

Ref legal event code: SC4A

Ref document number: 3600771

Country of ref document: PT

Date of ref document: 20220617

Kind code of ref document: T

Free format text: AVAILABILITY OF NATIONAL TRANSLATION

Effective date: 20220608

REG Reference to a national code

Ref country code: NO

Ref legal event code: T2

Effective date: 20220330

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2915555

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20220623

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220701

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220730

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602017055174

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220331

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20220331

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20230103

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NO

Payment date: 20230216

Year of fee payment: 7

Ref country code: FI

Payment date: 20230323

Year of fee payment: 7

Ref country code: CZ

Payment date: 20230310

Year of fee payment: 7

Ref country code: AT

Payment date: 20230322

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20230215

Year of fee payment: 7

Ref country code: PT

Payment date: 20230301

Year of fee payment: 7

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230528

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20230404

Year of fee payment: 7

Ref country code: CH

Payment date: 20230401

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20240223

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20220330

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20240213

Year of fee payment: 8

Ref country code: GB

Payment date: 20240212

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20170331

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20240220

Year of fee payment: 8

Ref country code: PL

Payment date: 20240213

Year of fee payment: 8

Ref country code: IT

Payment date: 20240222

Year of fee payment: 8

Ref country code: FR

Payment date: 20240228

Year of fee payment: 8

Ref country code: DK

Payment date: 20240212

Year of fee payment: 8

Ref country code: BE

Payment date: 20240221

Year of fee payment: 8