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WO/2009/046091A1 |
Bonded abrasive tools, having novel porous structures that are permeable to fluid flow, comprise a relatively low volume percentage of abrasive grain and bond, and a relatively low hardness grade, but are characterized by excellent mecha...
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WO/2009/009558A1 |
A single-use grinding tool includes a wheel portion having a profiled recess (e.g., such as a U, V, or bowl shape) extending circumferentially along the wheel portion's periphery. A multi-layered bonded abrasive (e.g., 3-dimensional matr...
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WO/2008/133581A1 |
The invention concerns a method for grinding button drill bits, in which an abrasive wheel is used to restore the original form of a button in a button drill-bit. The grinding is carried out according to the invention at a temperature in...
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WO/2008/128362A1 |
The invention relates to a form (10) with a folding card, wherein said folding card is detachably connected to the form exclusively over a first adhesive layer (23) and has two foldable parts (A, B) lying adjacent to each other in the fo...
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WO/2008/119299A1 |
A braze-welding diamond tool improved structure, has diamond mill grain(2) and metallic basal body(l,3) comprising keywalls(12,31,34,35,14,15,16) setted in circumference. The diamond mill grain(2) is brazed in keywalls (12,31,34,35,14,15...
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WO/2008/099349A1 |
The invention provides a segment including a working portion comprising a bonding matrix including at least two regions which differ from each other in abrasive particle content, size, type or distribution wherein the regions are derived...
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WO/2008/100210A1 |
The invention relates to a machine and at least one tool (10) for machining floor and road surfaces. The tool comprises at least one rotatably mounted disc (20) driven during use, which disc (20) comprises at least one machining element ...
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WO/2008/098635A1 |
A cut-off wheel for machine tools, in particular for handheld power grinders, has a blade body (8), on the outer edge of which at least two cutting segments (9) are mounted. Seen in the circumferential direction, the outer edge of the bl...
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WO/2008/075020A1 |
A method of grinding a workpiece with a grinding wheel is provided wherein the shape of the wheel is distorted in a predetermined manner during grinding by changing the speed of rotation of the wheel. This deformation of the wheel during...
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WO/2008/075512A1 |
This invention provides a grind stone comprising a disk-like base metal having an outer peripheral surface, a grinding layer, and a lubricating layer covering the grinding layer. The grinding layer comprises a plating layer fixed to the ...
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WO/2008/056539A1 |
A grindwheel having sloping grooves provided on its grinding face without detriment to the strength of retention of superabrasives on the grinding face is easily fabricated at low cost. There is provided a process for fabricating a grind...
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WO/2008/047949A1 |
The grinding wheel 10 is manufactured in such a manner that; (a) any one of particles 44 for the abrasive grain layer 12 and particles 46 for the substrate layer 13 are put into the press-mold die, and the other particles are put onto th...
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WO/2008/044408A1 |
[PROBLEMS] To provide a grindstone that even in the event of chamfer machining of an edge portion of plate glass, ensures prevention of any defect or breakage thereof without productivity decrease, and provide a method of machining an en...
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WO/2008/044672A1 |
At least one inclined groove is vertically extended through a contact face, on which a grinding stone and a workpiece contact with each other, so that a dynamic pressure to rise in a grinding liquid fed toward the contact face is release...
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WO/2008/035383A1 |
A device (1) suitable for working hard stones and the like has a marked flexibility of use and comprises: abrasive means (3) apt to abrade a workpiece (P); a support (2) of substantially cylindrical shape, apt to give to said abrasive me...
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WO/2008/018505A1 |
In a grinding wheel (1) of electrodeposited internal gear type, a grinding part (3) of gear type having an abrasive grain layer on which super abrasive grains are electrodeposited is formed on the inner peripheral surface of a circular r...
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WO/2007/149704A1 |
Abrasive articles having a compressible composite layer are described. The compressible composite layers include a compressible binder and abrasive agglomerates. Methods of using such abrasive articles to modify the edge of a workpiece a...
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WO/2007/134372A1 |
This invention relates generally to an abrasive wheel (20) and a power tool including the abrasive wheel (20). The abrasive wheel (20) includes a brittle abrasive body (28) that is rotatable around an axis of rotation having an abrasive ...
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WO/2007/129122A1 |
A rotary machining tool, comprising a rotatable hub (10) carrying a plurality of tool elements (14) around its outer periphery for machining a work-piece at a predetermined contact region of the tool; a plurality of passages (26) extendi...
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WO/2007/097932A2 |
An abrasive article comprises an abrasive element (1) having at least a non-porous region, and a hub (3) for securing the abrasive element to a shaft (2) positioned adjacent the non-porous region, the hub having first and second flanges ...
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WO/2007/087820A1 |
The invention relates to a grinding and/or cut-off disc (1) and to a method of producing a grinding and/or cut-off disc comprising a) a central coupling region (2) for coupling to a rotary drive for rotating the grinding and/or cut-off d...
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WO/2007/077675A1 |
This invention provides a segment magnet that, even when a disk-shaped core is expanded or contracted, compression stress and the like do not act on an adhesive located between adjacent segment chips. In a plurality of segment chips (11)...
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WO/2007/057287A1 |
The invention describes a cutting disc (100) comprising a circular-disc-shaped body (10) with a central hole (11) for accommodating a drive spindle, an annular cutting region (13), containing abrasive, at the circumference (12) of the ci...
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WO/2007/057282A1 |
The invention describes a cutting disc comprising a disc-shaped body (20) having a central opening (21) for accommodating a drive spindle and comprising an annular cutting region (30), containing an abrasive, at the periphery (22) of the...
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WO/2007/054383A1 |
A holding fixture (1) for a grinding tool (30) is comprised, in essence, of a first tension plate (10) and a second tension plate (20). The first tension plate (10) can rotate relative to the second tension plate (20) about an axis (A). ...
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WO/2007/045960A1 |
An abrasive cutoff wheel comprising a central disk (2) and a plurality of sintered abrasive segments (6) that are undetachably affixed to the outer circumference (8, 30) of the central disk (2) and that bilaterally protrude beyond the ce...
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WO/2007/033396A1 |
In a rotating grinding or cutting tool, in particular a grinding wheel or grinding roller, a coating made of an abrasive material, such as cubic boron nitride (CBN) or diamond, is applied to a base. The base (2, 12, 22, 32, 42) comprises...
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WO/2007/032346A1 |
A cutter (51) is composed of a disc-shaped cutting blade (22) having a through hole (21) at the center; an annular piezoelectric vibrator (25), which is concentrically fixed with the blade (22), in a region inside an outer circumference ...
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WO/2007/026007A1 |
Disclosed is a separating and grinding device comprising a drive unit, a working spindle (12), and a clamping flange (14) and a nut (16) for clamping a tool (18) to the working spindle (12) through the hub bore of the tool (18). Vibratio...
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WO/2007/022016A2 |
An abrasive tool, suitable for cutting, slotting, grinding and polishing hard materials, such as ceramics, metals, and composites thereof, and methods for making same. The tool includes a plurality of pores positioned in an abrasive regi...
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WO/2007/005628A1 |
A system for packaging resin bonded molded abrasive articles having a flexible package (10) comprising at least one sidewall(lδ) dedining and enclosed volume and at least one resin bonded abrasive article (12) positioned within the encl...
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WO/2006/131280A1 |
The invention relates to a grinding tool comprising a support body (2) and an abrasive lining (28) that is disposed on the circumference thereof and has lamellae (30) with gaps (32) provided therebetween. Cooling means can be supplied fo...
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WO/2006/128960A1 |
The present invention provides a novel method and apparatus for producing pulp from lignocellulosic raw material, such as wood or annual or perennial plants, by mechanical defibration. According to the invention, fibers are peeled from t...
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WO/2006/123353A1 |
The present invention provides a carbide punch having complex facets resembling a real diamond, a process allows the worker to make a punch holding it in a clamp (4) and polishing the said punch in a way similar to a real diamond. The cl...
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WO/2006/119899A1 |
The invention relates to a grinding and/or cutting-off wheel comprising a) a central coupling area connectable to the rotating shaft of a rotatable drive for rotating the grinding and/or cutting-off wheel about a rotating shaft extending...
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WO/2006/117443A1 |
The invention relates to a method for working on the periphery of an ophthalmic lens (L) with an edge (C), whereby the edge of the lens is ground using a first grinder (31) which is mounted in such a way that it can rotate about a rotati...
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WO/2006/106391A1 |
The invention relates to an abrasive cutoff wheel which comprises a central disk (2) and a plurality of abrasive segments (4) which subtend between themselves a straight bonding line (10) that slants inward along a predetermined disk dir...
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WO/2006/091519A2 |
A coated abrasive article includes a substrate and a patterned set of abrasive structures. Each abrasive structure of the patterned set of abrasive structures has an engineered microfeature, such as an internal structured pore, a surface...
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WO/2006/091169A2 |
A grinding wheel, in particular a grinding wheel for the grinding of drill bits in a rock drill crown, in which the grinding wheel demonstrates a flange (15) that protrudes radially outwards from the principally cylindrical body (13) at ...
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WO/2006/084630A1 |
The invention relates to an internally cooled grinding disc shielding (16), wherein a cooling liquid (14) outwardly flows thorough a recess embodied in the peripheral surface of a grinding disk, the shielding is provided with a collectin...
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WO/2006/072324A1 |
In order to fix a grinding disk base body (1a) to the centring section (4) of a grinding spindle rotor in a centring manner, the base body (1) comprises an inner recess (10) from which two fixed projections (11) project inwardly. The bas...
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WO/2006/058898A2 |
The device for cutting and grinding contains a drive unit (10), a drive spindle (14), and means (16, 24) for chucking a rotating tool (20) onto the drive spindle (14). Vibration damping means are provided between the tool (20) and the ch...
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WO/2006/054674A1 |
A grinding wheel formed by alternately bonding a plurality of stone chips having abrasive grain-bonded stone layers and having different properties to the outer peripheral part of a disk-like base rotatingly driven about a rotating axis....
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WO/2006/042352A1 |
The invention relates to a composite system for a cut-off wheel (1), in particular with a diameter greater than 400 mm, consisting of an abrasive external cutting ring with depressions (3) on both sides in the vicinity of the bore, two f...
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WO/2006/032382A1 |
A tool is described, particularly for milling operations, capable of being driven in rotation about its own main axis (X) and comprising a core (2) provided with plurality of abrasive elements (6) extending from the core radially to the ...
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WO/2006/031044A1 |
A grinding wheel has a disc having a connection hole formed at a center thereof, to which a rotation axis of a grinder is connected, and a plurality of abrasive segments detachably connected to a surface of the disc. A plurality of fixin...
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WO/2006/024274A1 |
The invention relates to a grinding disc, comprising a particularly metal grinding disc base body and a grinding grit, applied to a surface of the grinding disc base body, in particular, made from cubic boron nitride. According to the in...
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WO/2006/015563A1 |
The invention relates to a preferably ceramic- or plastic-bonded grinding disc, comprising a reinforcement, the application of which is particularly suitable for precision grinding. The aim of the invention is to exclude or adequately da...
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WO/2006/008258A1 |
Disclosed is a grinding wheel (1) for producing external or internal ball threads (3) on workpieces (2), particularly ball screw shafts or ball screw nuts for motor vehicle steering systems. Said grinding wheel (1) comprises a grinding e...
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WO/2005/102576A1 |
A cutting segment for a cutting tool used for cutting or drilling a brittle workpiece, such as stone, brick, concrete and asphalt, a method of manufacturing the segment and a cutting tool provided with the segment are disclosed. The segm...
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