A cleaning grinding head structure includes a main body, a connecting member connected with the main body, a stop ring mounted between the main body and the connecting member, and an operation member mounted on the connecting member. The main body has a first end provided with a fitting section and a second end provided with a connecting section. The main body has a mounting section arranged on the connecting section. The mounting section is provided with a plurality of slots. The connecting member has a first end provided with a locking section and a second end provided with a driving section. The locking section is provided with a mounting recess mounted on the connecting section. The mounting recess has a periphery provided with a plurality of ribs inserted into the slots of the main body.

A grinding disc device for a grinding apparatus is described, having at least one grinding layer and a carrier disc fixedly connected to the grinding layer. The grinding layer has at least one connection surface (F.sub.V) connected to the carrier disc and forms an abrasive grinding surface (F.sub.S) lying opposite the connection surface (F.sub.V) and facing away from the carrier disc. The carrier disc made of a plastic material is produced by injection molding and is connected immediately and directly to the connection surface (F.sub.V) of the grinding layer, wherein the plastic material of the carrier disc is sprayed by injection molding immediately and directly onto the connection surface (F.sub.V) of the grinding layer, such that the carrier disc and the grinding layer are connected to one another in a material-locking manner.

A grinding disc device for a grinding apparatus is described, having at least one grinding layer and a carrier disc fixedly connected to the grinding layer. The grinding layer has at least one connection surface (F.sub.V) connected to the carrier disc and forms an abrasive grinding surface (F.sub.S) lying opposite the connection surface (F.sub.V) and facing away from the carrier disc. The carrier disc made of a plastic material is produced by injection molding and is connected immediately and directly to the connection surface (F.sub.V) of the grinding layer, wherein the plastic material of the carrier disc is sprayed by injection molding immediately and directly onto the connection surface (F.sub.V) of the grinding layer, such that the carrier disc and the grinding layer are connected to one another in a material-locking manner.

An abrasive article and method of making same wherein the abrasive article comprises a mounting assembly and an abrasive attachment assembly wherein the first interlock member of the mounting assembly and the second interlock member of the abrasive attachment assembly are configured to align the central axis of the abrasive attachment assembly and the central axis of the mounting assembly, and the first interlock member releasably engages the second interlock member. The abrasive article is adapted to clean a work surface area around studs using a rotary tool, including, for example, a drills or die grinder.

An abrasive article and method of making same wherein the abrasive article comprises a mounting assembly and an abrasive attachment assembly wherein the first interlock member of the mounting assembly and the second interlock member of the abrasive attachment assembly are configured to align the central axis of the abrasive attachment assembly and the central axis of the mounting assembly, and the first interlock member releasably engages the second interlock member. The abrasive article is adapted to clean a work surface area around studs using a rotary tool, including, for example, a drills or die grinder.

Three dimension (3D) model generation systems and methods are operable to generate 3D model data corresponding to images of a physical object of interest that are viewed in a presenting media content event. An exemplary embodiment receives a user request that is associated with an interest by the user to obtain a 3D model of a physical object of interest that is being shown in a scene of a currently presenting media content event. A plurality of video image frames are selected from the scene. Then, 3D model data of the physical object of interest is generated based on at least the selected video image frames of the scene.

The present invention relates to an accessory for a polishing machine, suitable for the incorporation thereof in a polishing machine comprising a plurality of blades, characterized in that it comprises abrasive means and magnetic means, wherein the abrasive means and the magnetic means are mutually fitted out so as to be mutually fixable, the magnetic means in turn being fitted out for the incorporation thereof in the blades, with the abrasive means thereby being incorporated in the blades through said magnetic means, and with the same blades also being suitable and having movement capacity to allow floor polishing by means of the abrasive means incorporated therein.

A connecting device may be provided comprising a positive connecting element and a negative connecting element, wherein the positive connecting element has an elevation arranged on a base surface and the negative connecting element has a depression introduced into a contact surface, into which the elevation of the positive connecting element can be introduced, wherein the positive and the negative connecting element may be connected to one another by rotation relative to one another.

A method of recoating an abrasive tool, wherein the abrasive tool includes a main tool body, which has at least one accommodating surface for accommodating abrasive bodies, wherein the abrasive bodies are adhesively bonded to the accommodating surface by an adhesive. The method includes at least the following steps: degenerating the adhesive, detaching the worn-out abrasive bodies from the main tool body, detaching the degenerated adhesive from the main tool body, reapplying the adhesive; and recoating the main tool body with new abrasive bodies.

An apparatus for surface finishing includes a robot and an end effector. The end effector includes a compliance wrist having an axis of movement and coupled to the robot and a grinder tool coupled to the compliance wrist. The robot is configured to controllably position the end effector in three-dimensional space. The compliance wrist is configured to bias the grinder tool to a biased position relative to the robot and enable the grinder tool to move relative to the robot in response to an external force acting upon the grinder tool.