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.
B24D 5/14 - Zonally-graded wheelsComposite wheels comprising different abrasives
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
B29C 64/112 - Processes of additive manufacturing using only liquids or viscous materials, e.g. depositing a continuous bead of viscous material using individual droplets, e.g. from jetting heads
2.
ABRASIVE MEDIUM COMPRISING A PHOSPHATE-BASED FILLER
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.
B24D 3/34 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
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).
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.
B24D 7/06 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front faceBushings or mountings therefor with inserted abrasive blocks, e.g. segmental
5.
ASSEMBLY HAVING A HANDHELD POWER TOOL AND A ROUGHING DISK
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).
B24B 23/00 - Portable grinding machines, e.g. hand-guidedAccessories therefor
B24B 23/02 - Portable grinding machines, e.g. hand-guidedAccessories therefor with rotating grinding toolsAccessories therefor
B24B 49/16 - Measuring or gauging equipment for controlling the feed movement of the grinding tool or workArrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation taking regard of the load
G01H 3/14 - Measuring mean amplitudeMeasuring mean powerMeasuring time integral of power
B23Q 17/09 - Arrangements for indicating or measuring on machine tools for indicating or measuring cutting pressure or cutting-tool condition, e.g. cutting ability, load on tool
6.
METHOD FOR PRODUCING A RESIN-BONDED GRINDING TOOL, GRINDING TOOL PRODUCED BY THE METHOD, AND ARRANGEMENT FOR CARRYING OUT THE METHOD
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.
B24D 3/34 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
B24D 5/08 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their peripheryBushings or mountings therefor with inserted abrasive blocks, e.g. segmental with reinforcing means
B24D 7/08 - Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front faceBushings or mountings therefor with inserted abrasive blocks, e.g. segmental with reinforcing means
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
B23Q 17/24 - Arrangements for indicating or measuring on machine tools using optics
7.
GRINDING TOOLS HAVING THREE-DIMENSIONAL REINFORCING STRUCTURES
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.
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).
B24D 13/16 - Wheels having flexibly-acting working parts, e.g. buffing wheelsMountings therefor acting by the front face comprising pleated flaps or strips
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
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.
B24D 18/00 - Manufacture of grinding tools, e.g. wheels, not otherwise provided for
B23D 61/18 - Sawing tools of special type, e.g. wire saw strands, saw blades or saw wire equipped with diamonds or other abrasive particles in selected individual positions
B28D 1/12 - Saw blades specially adapted for working stone
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.
B24D 13/16 - Wheels having flexibly-acting working parts, e.g. buffing wheelsMountings therefor acting by the front face comprising pleated flaps or strips
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.
B24B 23/02 - Portable grinding machines, e.g. hand-guidedAccessories therefor with rotating grinding toolsAccessories therefor
B24B 27/08 - Grinders for cutting-off being portable
B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents
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.
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.
B24D 99/00 - Subject matter not provided for in other groups of this subclass
B23D 61/18 - Sawing tools of special type, e.g. wire saw strands, saw blades or saw wire equipped with diamonds or other abrasive particles in selected individual positions
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.
B24B 19/00 - Single purpose machines or devices for particular grinding operations not covered by any other main group
B24D 3/00 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents
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.
B24D 3/20 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents the constituent being used as bonding agent and being essentially organic
B24D 3/32 - Resins for porous or cellular structure
B24D 3/34 - Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special natureAbrasive bodies or sheets characterised by their constituents characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
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.
B24D 13/16 - Wheels having flexibly-acting working parts, e.g. buffing wheelsMountings therefor acting by the front face comprising pleated flaps or strips
patents