Abstract: Abrasive articles and method of making said articles are provided. The articles include an integral resilient member having a first and a second opposed major surface where the member includes a centrally disposed core that is substantially free of abrasive particles and a peripheral annulus that includes a plurality of abrasive zones that comprise abrasive particles. The particles protrude through at least one major surface of the integral member.

Abstract: A method for making an abrasive product comprising forming a structure of a sinterable retaining matrix having at least one first region containing a plurality of abrasive particles embedded therein and at least one second region containing substantially less or no abrasive particles adjacent the first region, at least one of the regions substantially surrounding the other of the regions, sintering the structure to form a unitary structure, wherein the first and second regions are integrated along a border between the regions, and extracting at least the first region from the unitary structure to form an abrasive product.

Abstract: A method for making an abrasive material comprising a plurality of hard particles providing the abrasive quality distributed in a retaining matrix for holding the particles in place, the method comprising the steps of placing a mask having openings therein against a carrier capable of supporting a plurality of the particles, providing an affixing capability to an outer side of the mask remote from the carrier to which hard particles will adhere, applying a plurality of hard particles to the outer side of the mask so that a portion of the particles pass through the openings of the mask and form a pattern of the particles on the carrier corresponding to the openings of the mask and another portion of the particles adhere to the mask, separating the mask containing the hard particles adhered to it from the carrier leaving the pattern of the particles on the carrier, at least partially surrounding the particles on the carrier with a retaining matrix material, and heating the retaining matrix material to cause the

Abstract: A method for making a sintered article comprising providing a plurality of individual blocks of sinterable matrix material, arranging said blocks in abutting relationship to form an assembly of said blocks in a sinter mold wherein said assembly comprises a plurality of said blocks extending in at least one direction thereof and sintering said assembly under pressure in the mold to form an integrated sintered article. The blocks may contain abrasive particles to provide a sintered abrasive article and individual abrasive segments may be extracted from the article.

Abstract: A cylindrical, abrasive grinding wheel having a cylindrical abrasive region with an abrasive surface at an outer circular band thereof. The abrasive region includes layers of abrasive particles. The layers of abrasive particles can be tilted with respect to an axis of rotation of the grinding wheel or they can such that grooving in the grinding wheel and a workpiece ground by the grinding wheel can be reduced. Alternatively, the abrasive region can be formed from a plurality of abrasive segments each having layers of abrasive particles. The layers of abrasive particles can be staggered in the direction of the axis of rotation from one segment to another. This can also reduce grooving in the grinding wheel and workpieces.

Abstract: A cylindrical, abrasive grinding wheel having a cylindrical abrasive region with an abrasive surface at an outer circular band thereof. The abrasive region includes layers of abrasive particles. The layers of abrasive particles can be tilted with respect to an axis of rotation of the grinding wheel or they can such that grooving in the grinding wheel and a workpiece ground by the grinding wheel can be reduced. Alternatively, the abrasive region can be formed from a plurality of abrasive segments each having layers of abrasive particles. The layers of abrasive particles can be staggered in the direction of the axis of rotation from one segment to another. This can also reduce grooving in the grinding wheel and workpieces.

Abstract: A method for making an abrasive material comprising a plurality of hard particles providing the abrasive quality distributed in a retaining matrix for holding the particles in place, the method comprising the steps of placing a mask having openings therein against a carrier capable of supporting a plurality of the particles, providing an affixing capability to an outer side of the mask remote from the carrier to which hard particles will adhere, applying a plurality of hard particles to the outer side of the mask so that a portion of the particles pass through the openings of the mask and form a pattern of the particles on the carrier corresponding to the openings of the mask and another portion of the particles adhere to the mask, separating the mask containing the hard particles adhered to it from the carrier leaving the pattern of the particles on the carrier, at least partially surrounding the particles on the carrier with a retaining matrix material, and heating the retaining matrix material to cause the

Abstract: A method for making an abrasive product comprising forming a structure of a sinterable retaining matrix having at least one first region containing a plurality of abrasive particles embedded therein and at least one second region containing substantially less or no abrasive particles adjacent the first region, at least one of the regions substantially surrounding the other of the regions, sintering the structure to form a unitary structure, wherein the first and second regions are integrated along a border between the regions, and extracting at least the first region from the unitary structure to form an abrasive product.

Abstract: A tool including abrasive segments, which can be superabrasive segment, mounted to a mounting plate and a method for making the same. The abrasive segments include hard particles and are formed by sintering layers of hard particles with layers of bond material to form a laminated sheet. The abrasive segments are then cut from the laminated sheet and mounted to a planar face of the mounting plate to form a portion of a working region of the tool. Each segment has a grinding surface which can be formed perpendicular to the layers of bond material and layers of hard particles so that the concentration of hard particles at the grinding surface is relatively high. This allows the portion of working surface made up of the abrasive segments to relatively small. The segments can also be mounted to the substrate disc such that the grinding surface of each segment is at an angle to the planar face.

Abstract: An abrasive surface for cutting and grinding tools and having abrasive particles embedded in a filler material. The abrasive surface is bonded to the perimeter edge of a rigid hub and has a circumferential dimension and a width dimension. The abrasive surface is divided along both the circumferential dimension and the width dimension into a plurality of hard regions and soft regions. The hard regions wear more slowly that the soft regions and so different patterns of hard regions and soft regions produce different cutting profiles. A method for fabricating the abrasive surface includes forming a laminated sheet from a plurality of laminated layers. Each laminated layer includes at least a layer of soft, easily deformable material and a layer of abrasive particles. The layers of abrasive particles can be formed into staggered rows to form the pattern of hard regions and soft regions. The layers of the laminated layers are sintered together to form the laminated sheet from which the abrasive surface is cut.

Abstract: A composite abrasive material is formed by coating a mesh-type material substrate with an adhesive, contacting the substrate with a quantity of hard, abrasive particles, then removing all particles not held by the adhesive within the openings of the mesh-type material. The particles are surrounded with a sinterable matrix material while the particles are temporarily held by the adhesive. The substrate can have the adhesive applied in a pattern, or covering uniformly to cause the particles to adhere in certain areas to achieve a desired pattern. While the particles are held on the substrate, physical force can be applied to orient the particles uniformly; then, a powder can be applied, or the substrate can be applied to a preform. Subsequent treatment with heat and pressure will complete the composite abrasive material.

Abstract: A composite abrasive material is formed by coating a mesh-type material substrate with an adhesive, contacting the substrate with a quantity of hard, abrasive particles, then removing all particles not held by the adhesive within the openings of the mesh-type material. The particles are surrounded with a sinterable matrix material while the particles are temporarily held by the adhesive. The substrate can have the adhesive applied in a pattern, or covering uniformly to cause the particles to adhere in certain areas to achieve a desired pattern. While the particles are held on the substrate, physical force can be applied to orient the particles uniformly; then, a powder can be applied, or the substrate can be applied to a preform. Subsequent treatment with heat and pressure will complete the composite abrasive material.

Abstract: Structurally independent cutting members are formed with abrasive material comprising a plurality of particles protruding through a surface of the retaining material comprising a mesh material for durable cutting members; and, the structurally independent cutting members are selectively continuous or discontinuous and spatially mounted along the working edge of a core. Some of the cutting members or portions of the cutting members are arranged for stock removal, and some are arranged for gauge keeping. Since the individual portions of the cutting portions are separate, more stock removal portions can be included, with fewer gauge keeping portions as may be required. The structurally independent cutting members may have a variety of profile shapes, such as contoured configurations to provide stock removal using high pressure cutting forces applied normal to the cutting face of the workpiece and gauge keeping functions using low pressure cutting forces applied laterally to the cutting face to the workpiece.

Abstract: A method for making abrasive articles uses a soft, easily deformable and flexible preform having a high binder content. The binder gives the preform its integrity, and is present in greater quantity than the retaining powder. The preform can have superabrasive particles mixed therein, or added later. The preform allows even distribution of a small quantity of retaining powder for thin superabrasive articles. A porous layer may be added to the assembly for making an abrasive article, the porous layer absorbing the liquid binder, supporting the retaining powder and superabrasive particles to prevent lateral movement, and perhaps giving strength to the preform. The final assembly to be heated or sintered (preferably under pressure) for making the abrasive article, which may include any number of layers of superabrasive particles, porous layers and preforms.

Abstract: An abrasive material is formed by coating a substrate with an adhesive, contacting he substrate with a quantity of hard, abrasive particles, then removing all particles not held by the adhesive. The remaining particles are surrounded with a sinterable or fusible material while the particles are temporarily held. The substrate can have the adhesive applied in a pattern, or covering uniformly and masked, to cause particles to adhere in certain areas to achieve a desired pattern. While the particles are held on the substrate, physical force can be applied to orient the particles uniformly; then, a powder can be applied, or the substrate can be applied to a preform. Subsequent treatment with heat and/or pressure will complete the abrasive material.

Abstract: A separator is placed between the mold, and a body of matrix material with hard particles being compacted, for forming an abrasive body. The separator may be relatively soft, so some of the hard particles will partially enter the separator during compaction. Subsequent removal of the separator leaves particles protruding through the retaining surface so the abrasive body does not necessarily require dressing. The separator may act as a release agent to facilitate removal of the abrasive body. The separator may also be contoured so the abrasive body will be contoured after compaction. A plurality of separators may be used to provide different functions simultaneously.

Abstract: An abrasive material has a contoured surface defining peaks and valleys, and side walls connecting the two. The peaks, side walls and valleys are covered with diamonds or other hard particles for effecting the grinding. In the beginning, the hard particles support one another laterally to prevent premature removal of particles, and the valleys provide for fluid flow for debris removal, cooling and protection of the retaining matrix. Later, the particles on the side walls, and eventually those in the valleys, become active in grinding, so that tool life is extended.

Abstract: An abrasive material is formed by uniformly spacing particles of diamond or other hard, abrasive material, on a flexible carrier, embedding the particles in the carrier, and fixing the particles to the carrier with the particles protruding from the carrier to perform the abrasive action. The particles can be distributed by placing them in the openings of a mesh; and, the mesh may be removed or may be a part of the carrier. Since the carrier is flexible, the carrier can be shaped to conform to substrates of complex shapes. A plurality of carriers having different concentrations can be bonded together to form tools having varying concentrations.

Abstract: A composite material is formed of a carrier having a cellular structure and diamonds or other hard, abrasive particles received within the cellular structure. A matrix material holds the diamonds in the carrier, and the matrix material may be the carrier itself or an additional substance such as a metal powder or resin. The diamonds may protrude from the composite material for aggressive working, or may be embedded for longer life of the material. The cellular carrier has a skeleton that protects and mechanically supports the diamonds within the composite material for greater durability of the composite material.

Abstract: An abrasive material is formed by uniformly spacing particles of diamond or other hard, abrasive material, on a flexible carrier, embedding the particles in the carrier, and fixing the particles to the carrier with the particles protruding from the carrier to perform the abrasive action. The particles can be distributed by placing them in the openings of a mesh; and, the mesh may be removed or may be a part of the carrier. Since the carrier is flexible, the carrier can be shaped to conform to substrates of complex shapes. A plurality of carriers having different concentrations can be bonded together to form tools having varying concentrations.