Abrégé

The present invention relates to an abrasive disk and to a method and a device for producing said abrasive disk. The abrasive disk is more particularly a cutting or grinding disk for use on a hand-held power tool, the abrasive disk comprising a circular disk body, in which a central cut-out is provided for holding the disk on the power tool. The circular disk body has at least two working regions having different abrasive properties. As the disk rotates, at least two working regions alternately come in contact with a region of the workpiece to be machined.

Classes IPC  ?

• B24D 5/12 - Meules de tronçonnage
• B24D 5/14 - Meules de dureté variableMeules composites comprenant différents abrasifs
• B24D 18/00 - Fabrication d'outils pour meuler, p. ex. roues, non prévue ailleurs
• B29C 64/112 - Procédés de fabrication additive n’utilisant que des matériaux liquides ou visqueux, p. ex. dépôt d’un cordon continu de matériau visqueux utilisant des gouttelettes individuelles, p. ex. de buses de jet

Abrégé

The invention relates to an abrasive medium which is bonded with a thermosetting material and comprises abrasive particles, a thermosetting binder and optionally further fillers, and contains a phosphate-based additive, the percentage of the phosphate-based additive being 1 to 10 wt.-% of the starting mixture of the abrasive medium. The phosphate-based additive is homogeneously distributed in the abrasive medium. The invention also relates to a method for producing corresponding thermosetting resin-bonded grinding disks.

Classes IPC  ?

• B24D 3/34 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants caractérisés par le fait que des additifs augmentent certaines propriétés physiques, p. ex. la résistance à l'usure, la conductibilité électrique, les propriétés d'auto-nettoyage
• B24D 3/28 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants et étant essentiellement organiques en résines

Abrégé

The invention relates to a resin-bonded grinding disk (9), especially for use in a hand-held power tool (1), comprising a central cut-out section (5) for holding the grinding disk (9) in a tensioning flange (4) of the power tool (1), a first reinforcing fabric (11), and a second reinforcing fabric (12), the reinforcing fabrics (11, 12) each being arranged on a lower face (18) and an upper face (17) of the grinding disk (9). The first reinforcing fabric (11) has a surface that substantially corresponds to the surface of the grinding disk (9) and the second reinforcing fabric (12) has a surface that is smaller than the surface of the grinding disk (9).

Classes IPC  ?

• B24D 5/04 - Meules d'une seule pièce munies d'armatures de renforcement
• B24D 5/12 - Meules de tronçonnage
• B24D 7/04 - Meules d'une seule pièce munies d'armatures de renforcement
• B24D 7/18 - Meules de forme particulière

Abrégé

The invention relates to a cutting tool (1) having a plurality of cutting disks (2), in particular diamond cutting disks, wherein the cutting disks (2) are coaxially arranged adjacent to each other along a common axis of rotation (A), wherein each cutting disk (2) comprises a blade body (5) having a plurality of cutting segments (4) distributed over the circumference of the blade body (5), wherein each blade body (5) defines a central cutting plate (E), wherein at least some of the cutting segments protrude axially from the central cutting plane (E), wherein a segment gap (3) remains between each pair of cutting segments (4) of a cutting disk (2) adjacent to each other in a circumferential direction (U), wherein a first of the cutting segments, which is arranged in a first axial position, is enlarged in comparison with a second cutting segment, which is arranged in a second axial position that deviates from the first axial position.

Classes IPC  ?

• B24D 5/12 - Meules de tronçonnage
• B24D 7/06 - Meules agglomérées, ou meules comportant des segments abrasifs rapportés, conçues pour travailler autrement que par la périphérie, p. ex. par le côtéBagues ou accessoires pour le montage de ces meules avec des segments abrasifs rapportés, p. ex. meules segmentées

Abrégé

The invention relates to an assembly having a handheld power tool, in particular an angle grinder (1), wherein the power tool (1) comprises: a housing (2), a drive shaft (3) supported on the housing (2) by means of a bearing (5), a drive unit (4) for driving the drive shaft (3), handles (6, 7), which are each rigidly attached to the housing (2), and fastening means for fastening a roughing disk (9) to the drive shaft, wherein the assembly also comprises the following: a first sensor means (11) for detecting a power consumption value (P) or an acceleration sensor (18) for producing position change information (19), evaluating means (13) for evaluating the detected power consumption value (P) or the position change information (19), and outputting means (14) for outputting an evaluation result of the evaluation by the evaluating means (13).

Classes IPC  ?

• B24B 23/00 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet
• B24B 23/02 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet
• B24B 49/16 - Appareillage de mesure ou de calibrage pour la commande du mouvement d'avance de l'outil de meulage ou de la pièce à meulerAgencements de l'appareillage d'indication ou de mesure, p. ex. pour indiquer le début de l'opération de meulage tenant compte de la pression de travail
• G01H 3/14 - Mesure de l'amplitude moyenneMesure de la puissance moyenneMesure de l'intégrale dans le temps de la puissance
• B23Q 17/09 - Agencements sur les machines-outils pour indiquer ou mesurer pour indiquer ou mesurer la pression de coupe ou l'état de l'outil de coupe, p. ex. aptitude à la coupe, charge sur l'outil

Abrégé

The invention relates to a method for producing a resin-bonded grinding tool, in particular a grinding disc, roughing disc or cutting-off disc, comprising the following method steps of: preparing a blank by introducing resin (2), abrasive particles (3) and a supporting structure (4) into a production mould (1), pressing the materials (2, 3, 4) introduced into the production mould (1), wherein the supporting structure (4) is furnished with a defined dye before introduction into the production mould (1) and wherein an optical monitoring method that is sensitive to the defined dye is used to check whether radiation (8) in the wavelength range of the defined dye is being emitted by the blank.

Classes IPC  ?

• B24D 3/34 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants caractérisés par le fait que des additifs augmentent certaines propriétés physiques, p. ex. la résistance à l'usure, la conductibilité électrique, les propriétés d'auto-nettoyage
• B24D 5/08 - Meules agglomérées, ou meules comportant des segments abrasifs rapportés, conçues pour travailler uniquement par leur périphérieBagues ou accessoires pour le montage des ces meules comportant des segments abrasifs rapportés, p. ex. meules segmentées munies d'armatures de renforcement
• B24D 5/12 - Meules de tronçonnage
• B24D 7/08 - Meules agglomérées, ou meules comportant des segments abrasifs rapportés, conçues pour travailler autrement que par la périphérie, p. ex. par le côtéBagues ou accessoires pour le montage de ces meules avec des segments abrasifs rapportés, p. ex. meules segmentées munies d'armatures de renforcement
• B24D 18/00 - Fabrication d'outils pour meuler, p. ex. roues, non prévue ailleurs
• B23Q 17/24 - Agencements sur les machines-outils pour indiquer ou mesurer utilisant des moyens optiques

Abrégé

The invention relates to a grinding tool for grinding, in particular for cut-off grinding or for rough grinding, in which the abrasive grain is bonded in a mixture containing a plastic, in particular a synthetic resin, wherein the mixture is at least partially interlaced with a stabilising support structure, wherein the support structure forms a honeycomb structure having a large number of cells 20, 21 adjoining one another, wherein the cell walls are thinner than the width and the depth of the individual cells 20, 21 and wherein the cells 20, 21 are filled with the mixture 4.

Classes IPC  ?

• B24D 5/04 - Meules d'une seule pièce munies d'armatures de renforcement
• B24D 5/12 - Meules de tronçonnage
• B24D 7/04 - Meules d'une seule pièce munies d'armatures de renforcement

Abrégé

The invention relates to a method for producing a flap wheel (4) having a plate-shaped carrier, wherein a plurality of grinding flaps (7) overlapping in a shingle-like manner are glued to an annular carrier section (3, 5) that is centered on a rotational axis A of the flap wheel (4), wherein the carrier section (3, 5) is produced from an amorphous thermoplastic material, in particular ABS, wherein the surface (8) of the carrier section (3, 5) is activated prior to gluing, a heat-curing adhesive (7) is applied to the activated surface (8) of the carrier section, and the grinding flaps (8) are placed and pressed onto the carrier section (5) provided with heat-curing adhesive (7).

Classes IPC  ?

• B24D 13/16 - Meules dont le corps comporte des parties flexibles au travail, p. ex. meules souples de polissageAccessoires pour le montage de ces meules travaillant par leur face frontale comprenant des lamelles ou bandes plissées en accordéon
• B24D 18/00 - Fabrication d'outils pour meuler, p. ex. roues, non prévue ailleurs

Abrégé

A segmented cutting disc, in particular a diamond cutting disc, having a disc body 1 and having cutting segments 2 distributed over the circumference of the disc body 1, wherein the disc body 1 defines a central cutting plane 4, and wherein a segment gap 3 remains in each case between two cutting segments 2, said segment gap having cutting segments 2 of which the cutting edges are arranged offset in relation to the central cutting plane 4.

Classes IPC  ?

• B24D 5/12 - Meules de tronçonnage
• B24D 18/00 - Fabrication d'outils pour meuler, p. ex. roues, non prévue ailleurs
• B23D 61/18 - Outils particuliers pour scier, p. ex. fil coupant comportant des dents de scie, lames de scie ou fil à scier comportant des diamants ou d'autres particules abrasives disposés individuellement dans des positions choisies
• B28D 1/12 - Lames de scie spécialement adaptées au travail de la pierre

Abrégé

The invention relates to a grinding wheel (10) having a disc-shaped or plate-shaped carrier (12) having a central bore (18) and having grinding lamellae (20, 22) which are arranged overlapping in a shingle-like manner on a ring-shaped outer region (16) of the carrier (12). According to the invention, at least two different types of grinding lamellae (20, 22) are arranged on the carrier (16), wherein said lamellae have different geometries. The grinding lamellae (20, 22) of the two different types can have different lengths and/or different widths and can be arranged in alternating sequence. The lamellae (22) of the second type can be approximately 1/3 shorter than the lamellae (20) of the first type and have approximately the same width. The lamellae (22) of the second type can have an abrasive having a coarser grit than the lamellae (20) of the first type.

Classes IPC  ?

• B24D 13/16 - Meules dont le corps comporte des parties flexibles au travail, p. ex. meules souples de polissageAccessoires pour le montage de ces meules travaillant par leur face frontale comprenant des lamelles ou bandes plissées en accordéon

Abrégé

The invention relates to a system for cutting objects, comprising a driven spindle (2) and a cutting wheel (1, 1a) bent at an angle with a central bore which is surrounded by a retaining region, said retaining region being recessed with respect to the surface of the cutting wheel. The cutting wheel is removably retained against a clamping flange of the spindle (2) by means of a clamping nut (4) acting on the base (8) of the retaining region. The retaining region entirely receives the spindle (2) and the clamping nut (4) without a protrusion over the surface.

Classes IPC  ?

• B24B 23/02 - Machines de meulage portatives, p. ex. à guidage manuelAccessoires à cet effet comportant des outils de meulage rotatifsAccessoires à cet effet
• B24B 27/08 - Machines à couper par meulage portatives
• B24D 3/00 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants
• B24D 5/12 - Meules de tronçonnage
• B23D 61/02 - Lames de scies circulaires

Abrégé

The invention relates to a reducing ring having a reducing segment 6 comprising an outer diameter for inserting in the central hole of a cutoff grinder grinding disc 3 and an inner diameter for centering relative to the centering area 4 of a clamping flange 1, comprising a contact area formed by a collar 7 having an outer diameter greater than the outer diameter of the reducing segment 6.

Classes IPC  ?

• B24B 27/08 - Machines à couper par meulage portatives
• B24D 5/12 - Meules de tronçonnage

Abrégé

Segment cut-off wheel for machining workpieces made of metal, and particularly cast metal, comprising a metal steel blade 1 and segments disposed on the circumference of the steel blade 1, wherein the outside edge of the segments 2 is provided with abrasive grains, wherein two types of segments 2 are provided, which differ with respect to the abrasive grains they are provided with, wherein the abrasive grains are held in the first type, these being the cutting segments 8, substantially on the cutting edge 5, while the second type, the abrasive segments 10, is provided with a grinding region 11 on a lateral surface, said region being provided with abrasive grains.

Classes IPC  ?

• B24D 5/12 - Meules de tronçonnage
• B24D 99/00 - Matière non prévue dans les autres groupes de la présente sous-classe
• B23D 61/18 - Outils particuliers pour scier, p. ex. fil coupant comportant des dents de scie, lames de scie ou fil à scier comportant des diamants ou d'autres particules abrasives disposés individuellement dans des positions choisies

Abrégé

The invention relates to an abrasive point for machining work pieces made of metal, in particular of cast metal, having a base body with a grinding region effective on the outer surface for grinding the work piece and a shaft for clamping the tool in the collet chuck of a machine, wherein the base body is produced from metal and wherein the outer surface of the base body has abrasive particles that are held on said surface in a firmly bonded manner.

Classes IPC  ?

• B24B 19/00 - Machines ou dispositifs conçus spécialement pour une opération particulière de meulage non couverte par d'autres groupes principaux
• B24D 3/00 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants
• B24D 5/02 - Meules d'une seule pièce

Abrégé

The invention relates to a synthetic-resin-bonded grinding disk comprising a mixture of abrasive grain, binding agent, and pore formers, wherein the pore formers are plant seeds and are contained in the finished grinding disk. The grinding disk is composed of 60 to 90 wt % of abrasive grain and 10 to 40 wt % of a binding agent, wherein the plant seeds constitute up to 80 wt % of the binding agent. The plant seeds can contain oil and can be rape seeds, poppy seeds, clover seed, lupin seeds, mustard seeds, serradella vetch seeds, or similar plant seeds. The grinding disk can be produced by mixing abrasive grain, binding agent, and plant seeds, pouring the starting mixture into a mold provided therefor, pressing the mixture, pre-drying the mixture, and curing the grinding disk. The plant seeds are not burned in the production of the grinding disk. The grinding disk is cured at temperatures of up to 250°C, preferably of up to 200°C, more preferably of up to 180°C, and more preferably of up to 150°C.

Classes IPC  ?

• B24D 3/20 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants et étant essentiellement organiques
• B24D 3/32 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants les constituants étant utilisés comme agglomérants et étant essentiellement organiques en résines à structure poreuse ou alvéolaire
• B24D 3/34 - Propriétés physiques des corps ou feuilles abrasives, p. ex. surfaces abrasives de nature particulièreCorps ou feuilles abrasives caractérisés par leurs constituants caractérisés par le fait que des additifs augmentent certaines propriétés physiques, p. ex. la résistance à l'usure, la conductibilité électrique, les propriétés d'auto-nettoyage

Abrégé

The invention relates to a flap wheel, comprising a plate-shaped carrier, which can be rotatably driven about an axis and carries a plurality of abrasive flaps overlapping in a tile-like manner, wherein the abrasive flaps are fastened to a circular carrier section centered on the axis, particularly by means of gluing, wherein the abrasive flaps have a straight first edge, the lower edge, and a second straight edge abutting thereon, the outer edge, and wherein the abrasive flaps have a third edge, the inner edge, which cuts both the lower edge and the outer edge at least in the extension of the flap, wherein the outer edges of the abrasive flaps form the outer contour of the flap wheel. The invention also relates to a method for producing the same.

Classes IPC  ?

• B24D 13/16 - Meules dont le corps comporte des parties flexibles au travail, p. ex. meules souples de polissageAccessoires pour le montage de ces meules travaillant par leur face frontale comprenant des lamelles ou bandes plissées en accordéon