A grinding and/or cutting tool which has at least one surface region for a lateral grinding process and a surface region for a circumferential grinding process and/or a cutting process. The surface regions have different removal properties. The material properties of the surface regions differ in that the surface regions have different abrasive materials, grinding particle shapes, particle scattering patterns, particle sizes, degrees of hardness, structures, and/or binders. In one embodiment, the grinding and/or cutting tool has two of the surface regions for a lateral grinding process, and the two surface regions for a lateral grinding process are arranged at a distance from one another. The surface region for a circumferential grinding process or for a cutting process is arranged preferably between the two surface regions for a lateral grinding process.

The present invention relates to a polishing system (100) for providing a polishing finish to a concrete surface, said system comprises a pad lock (2) which, one a second surface (6) thereof, comprises a number of protrusions (32) which are able to enter into engagement with a voids (16) arranged on a first surface (12) of a pad (10) placed between a fixing ring and said pad lock. The use of such a system provides a higher degree of integrity during use of said polishing system.

A process can include forming at least one precursor abrasive component on a core and infiltrating at least a portion of the precursor abrasive component. The precursor abrasive component can include a body including a metal bond matrix and abrasive particles. Infiltrating can be performed after forming the precursor abrasive component with an infiltrant material. The infiltrant material can include a metal element, an alloy or a combination thereof. In an embodiment, forming at least one precursor abrasive component can include simultaneously joining the precursor abrasive component to the core.

A process can include forming at least one precursor abrasive component on a core and infiltrating at least a portion of the precursor abrasive component. The precursor abrasive component can include a body including a metal bond matrix and abrasive particles. Infiltrating can be performed after forming the precursor abrasive component with an infiltrant material. The infiltrant material can include a metal element, an alloy or a combination thereof. In an embodiment, forming at least one precursor abrasive component can include simultaneously joining the precursor abrasive component to the core.

This invention relates to a grinding wheel comprising a frame including a generally circular shape and adapted to rotate about a rotation axis thereof and a plurality of grinding assemblies radially located on the frame, each of the grinding assembly comprising a depth control element, a cutting element and a chip management element.

This invention relates to a grinding wheel comprising a frame including a generally circular shape and adapted to rotate about a rotation axis thereof and a plurality of grinding assemblies radially located on the frame, each of the grinding assembly comprising a depth control element, a cutting element and a chip management element.

A polishing or grinding pad with a multilayer reinforcement is provided. In one aspect, a floor polishing or grinding pad assembly employs a flexible pad, at least two reinforcement layers or rings with different characteristics, and multiple floor-contacting tools such as abrasive disks. In another aspect, a workpiece polishing or grinding pad assembly includes a flexible and rotatable pad, a polymeric reinforcement layer coupled to the pad and a metallic reinforcement layer to which are coupled abrasive tools. In yet another aspect, a floor-facing reinforcement is more flexible than a pad-facing reinforcement which is more rigid.

A polishing or grinding pad with a multilayer reinforcement is provided. In one aspect, a floor polishing or grinding pad assembly employs a flexible pad, at least two reinforcement layers or rings with different characteristics, and multiple floor-contacting tools such as abrasive disks. In another aspect, a workpiece polishing or grinding pad assembly includes a flexible and rotatable pad, a polymeric reinforcement layer coupled to the pad and a metallic reinforcement layer to which are coupled abrasive tools. In yet another aspect, a floor-facing reinforcement is more flexible than a pad-facing reinforcement which is more rigid.

An abrasive-containing element has at least one pellet provided with an abrasive-containing layer and an abrasive-free layer, and at least one holding member having one end connected with the abrasive-free layer of the pellet and another opposite end introducible into a tool body for connecting the pellet to the tool body, and an abrasive tool has a plurality of such abrasive-containing elements connected to its tool body.

An abrasive-containing element has at least one pellet provided with an abrasive-containing layer and an abrasive-free layer, and at least one holding member having one end connected with the abrasive-free layer of the pellet and another opposite end introducible into a tool body for connecting the pellet to the tool body, and an abrasive tool has a plurality of such abrasive-containing elements connected to its tool body.