An abrasive grinding wheel (20) comprising an annular body (200) defining an abrasive front face (202) at least partly made of a layer of an abrasive mixture (21) and an opposite rear face (203), which grinding wheel (20) comprises an annular damping element (23) made of a resilient yielding material and fixed to the annular body (200), wherein the damping element (23) comprises a first face (231) facing towards the abrasive front face (202) and an opposite free second face (232) which defines at least a portion of the rear face (203) of the annular body (200).

An abrasive grinding wheel (20) comprising an annular body (200) defining an abrasive front face (202) at least partly made of a layer of an abrasive mixture (21) and an opposite rear face (203), which grinding wheel (20) comprises an annular damping element (23) made of a resilient yielding material and fixed to the annular body (200), wherein the damping element (23) comprises a first face (231) facing towards the abrasive front face (202) and an opposite free second face (232) which defines at least a portion of the rear face (203) of the annular body (200).

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 polymer including a biaxially-oriented material. In an embodiment, the barrier layer may include a polymer-containing film as an exterior surface of the abrasive tool. The abrasive tool may be formed such that the barrier layer is formed in-situ with the formation of the bonded abrasive.

The invention concerns a tool for machining of materials, specifically a grinding tool, which has a substantially rotationally symmetrical shape with respect to a rotation axis (R), the tool comprising an outer shell centered about the rotation axis and defining an internal space therein, wherein at least a part of a surface of the outer shell is provided with an abrasive coating or component, wherein the outer shell encases an internal skeleton structure in the internal space, the internal skeleton being integral with the outer shell and defining void volumes in the internal space thereby establishing material and void volumes of the internal space, and wherein the material to void ratio M/V is distributed substantially identically along each radius (r) centered around the rotation axis (R) and its corresponding symmetrical radius (r). The invention also concerns a method for producing such tool.

The invention concerns a tool for machining of materials, specifically a grinding tool, which has a substantially rotationally symmetrical shape with respect to a rotation axis (R), the tool comprising an outer shell centered about the rotation axis and defining an internal space therein, wherein at least a part of a surface of the outer shell is provided with an abrasive coating or component, wherein the outer shell encases an internal skeleton structure in the internal space, the internal skeleton being integral with the outer shell and defining void volumes in the internal space thereby establishing material and void volumes of the internal space, and wherein the material to void ratio M/V is distributed substantially identically along each radius (r) centered around the rotation axis (R) and its corresponding symmetrical radius (r). The invention also concerns a method for producing such tool.

A method of making a bonded abrasive article comprises urging crushed abrasive particles with agitation against the surface of a tool, thereby causing a first portion of crushed abrasive particles to become retained within horizontally-oriented precisely-shaped cavities at predetermined locations with respect to the surface of the tool, and causing a second portion of the crushed abrasive particles to remain as loose particles on the surface of the tool. The loose particles are separated from the tool. The tool is positioned within a mold containing a curable binder material precursor. The crushed abrasive particles retained in the precisely-shaped cavities into the mold are released, and the tool is removed from the mold. The crushed abrasive particles and the curable binder material precursor are shaped and cured to form the bonded abrasive article. A bonded abrasive article preparable by the method is also disclosed.

An abrasive article with an abrasive body a reinforcing member disposed within the body and a bond material that includes a bulk molding compound material. The abrasive article can have an average burst speed of at least (Formula (I)) wherein c is the circumferences of the wheel in mm.

[00001]$\begin{array}{cc}26800\mathrm{RPM}-27\frac{\mathrm{RPM}}{mm}*C& \left(I\right)\end{array}$

An abrasive article with an abrasive body a reinforcing member disposed within the body and a bond material that includes a bulk molding compound material. The abrasive article can have an average burst speed of at least (Formula (I)) wherein c is the circumferences of the wheel in mm.

[00001]$\begin{array}{cc}26800\mathrm{RPM}-27\frac{\mathrm{RPM}}{mm}*C& \left(I\right)\end{array}$

Carrier body (1) for a grinding or a cutting tool (2), comprising a central coupling area (3) for connecting the grinding or cutting tool (2) to a rotary drive for rotating the grinding or cutting tool (2) about an axis of rotation (4) passing through the coupling area (3), a carrier structure (6) adjacent thereto in the radial direction (5), wherein the carrier structure (6) has recesses (7, 8) separate from the coupling area (3), and two substantially annular side surfaces (9, 10) which are spaced apart from each other in the axial direction (11) across the carrier structure (6), wherein at least some, preferably all, of the recesses (7, 8) are open only to one of the side surfaces (9, 10) of the carrier body (1).

Carrier body (1) for a grinding or a cutting tool (2), comprising a central coupling area (3) for connecting the grinding or cutting tool (2) to a rotary drive for rotating the grinding or cutting tool (2) about an axis of rotation (4) passing through the coupling area (3), a carrier structure (6) adjacent thereto in the radial direction (5), wherein the carrier structure (6) has recesses (7, 8) separate from the coupling area (3), and two substantially annular side surfaces (9, 10) which are spaced apart from each other in the axial direction (11) across the carrier structure (6), wherein at least some, preferably all, of the recesses (7, 8) are open only to one of the side surfaces (9, 10) of the carrier body (1).