An abrasive tool can include a bonded abrasive including a body and a barrier layer bonded to a major surface of the body. The body can include abrasive particles contained within a bond material. The barrier material can include a metal-containing film. In an embodiment, the barrier layer may further include a polymer-containing film. In another embodiment, the barrier layer may include a biaxially oriented material. The abrasive tool may be formed such that the barrier layer is formed in-situ with the formation of the bonded abrasive.

An annular grinding stone is provided which includes a cutting edge with a plurality of V-shaped slits defined in an outer circumferential portion thereof is provided. Each of the V-shaped slits is defined by a first surface and a second surface of the annular cutting edge. The first surface is positioned rearwardly of the second surface with respect to a direction along which the annular grinding stone rotates, and the second surface is positioned forwardly of the first surface with respect to the direction along which the annular grinding stone rotates. The first surface lies perpendicularly to the direction along which the annular grinding stone rotates at a radially outer end thereof and parallel to thicknesswise directions of the annular cutting edge. The second surface is inclined with respect to the first surface at an angle ranging from 30 to 60.

An annular grinding stone is provided which includes a cutting edge with a plurality of V-shaped slits defined in an outer circumferential portion thereof is provided. Each of the V-shaped slits is defined by a first surface and a second surface of the annular cutting edge. The first surface is positioned rearwardly of the second surface with respect to a direction along which the annular grinding stone rotates, and the second surface is positioned forwardly of the first surface with respect to the direction along which the annular grinding stone rotates. The first surface lies perpendicularly to the direction along which the annular grinding stone rotates at a radially outer end thereof and parallel to thicknesswise directions of the annular cutting edge. The second surface is inclined with respect to the first surface at an angle ranging from 30 to 60.

The present invention relates to a grinding disk or wheel, flap disk or cut-off disk which will increase the effectiveness of each battery charge during tool use.

A composite machining tool includes a tool body with at least one cutting edge and at least one grinding region. The grinding region is located adjacent to the cutting edge such that there is a gap between the grinding region and the cutting edge and such that when the tool performs a machining action the cutting edge and the grinding region act together on a material surface.

A composite machining tool includes a tool body with at least one cutting edge and at least one grinding region. The grinding region is located adjacent to the cutting edge such that there is a gap between the grinding region and the cutting edge and such that when the tool performs a machining action the cutting edge and the grinding region act together on a material surface.

Diamond grinding wheel, for grinding and abrasion of stratified solid materials including a cutting unit provided with a diamond crown and: a central tooth adapted to remove plastic material or similar materials, present on a sheet; holes adapted for cooling; cuts, based on the glass sheets and on the plastic material to be processed; external flange. The device is adapted to increase the quality of the sheets being processed once the grinding has terminated, rendering them polishable, lacking plastic material residues on the glasses; the dimensions of the device varying from a diameter and a height included between 30 mm and 400 mm; the grinding wheel including a base flange, and an external flange made of iron, aluminum and/or resin adapted to ensure a rigid structure for the entire device.

Diamond grinding wheel, for grinding and abrasion of stratified solid materials including a cutting unit provided with a diamond crown and: a central tooth adapted to remove plastic material or similar materials, present on a sheet; holes adapted for cooling; cuts, based on the glass sheets and on the plastic material to be processed; external flange. The device is adapted to increase the quality of the sheets being processed once the grinding has terminated, rendering them polishable, lacking plastic material residues on the glasses; the dimensions of the device varying from a diameter and a height included between 30 mm and 400 mm; the grinding wheel including a base flange, and an external flange made of iron, aluminum and/or resin adapted to ensure a rigid structure for the entire device.

An outer blade cutting wheel is provided comprising an annular thin disc base and a blade section of bonded abrasive grains on the periphery of the base. Provided that an imaginary range is delineated by two imaginary planes extending parallel to the planar surfaces of the base and tangent to widthwise side portions of the blade section and two imaginary circumferences defined about the rotational axis and extending tangent to inner and outer perimeters of the blade section, the blade section occupies 10-40% by volume of the imaginary range minus the region of the base, and the widthwise side portions of the blade section have a dented shape relative to the imaginary planes. The cutting wheel is capable of cutoff machining at a high feed speed while maintaining a high accuracy and a low cutting load.

An outer blade cutting wheel is provided comprising an annular thin disc base and a blade section of bonded abrasive grains on the periphery of the base. Provided that an imaginary range is delineated by two imaginary planes extending parallel to the planar surfaces of the base and tangent to widthwise side portions of the blade section and two imaginary circumferences defined about the rotational axis and extending tangent to inner and outer perimeters of the blade section, the blade section occupies 10-40% by volume of the imaginary range minus the region of the base, and the widthwise side portions of the blade section have a dented shape relative to the imaginary planes. The cutting wheel is capable of cutoff machining at a high feed speed while maintaining a high accuracy and a low cutting load.