A rotatable head and arbor for use with abrasive parts includes a rotatable head and an arbor connected to the rotatable head at a central axis of a rotatable head, wherein an outward extending end of the arbor has a polygonal cross-sectional configuration. Another aspect of the invention is a rotatable head and arbor for use with abrasive articles includes a head which includes a polyfoam material and a rigid plate member formed into the polyfoam material and an arbor connected to the head at a central axis of the rotatable head.

The invention relates to a sanding pad for a sander, such as an eccentric sander, which sanding pad includes a disc-shaped body with a rotation axis. The disc-shaped body has a first and second side extending substantially radially from the rotation axis and a third peripheral side extending between the first and second side. The sanding pad includes a coupling arranged on the first side, concentrically with the rotation axis, for coupling to a sander, a disc-shaped flexible plate which is arranged concentrically with the rotation axis and which lies with a first side against the second side of the disc-shaped body, where the disc-shaped flexible plate extends beyond the peripheral side as seen in radial direction; and attaching means for attaching a sanding layer arranged on a second side of the disc-shaped flexible plate opposite the first side of the plate.

A rotatable head and arbor for use with abrasive parts includes a rotatable head and an arbor connected to the rotatable head at a central axis of a rotatable head, wherein an outward extending end of the arbor has a polygonal cross-sectional configuration. Another aspect of the invention is a rotatable head and arbor for use with abrasive articles includes a head which includes a polyfoam material and a rigid plate member formed into the polyfoam material and an arbor connected to the head at a central axis of the rotatable head.

A disc changing system for a robotic defect repair system is presented. The system has a first abrasive disc and a second abrasive disc. The first and second abrasive discs are coupled to a liner. The system includes an abrasive disc placement device configured to automatically: remove the first abrasive disc from the liner, transport the first abrasive disc to a robotic tool of the robotic defect repair system, and place the first abrasive disc on a backup pad coupled to the robotic tool. The system also includes an abrasive disc remover configured to automatically remove the first abrasive disc after receiving a removal signal. The system also includes a controller configured to send an instruction to the disc placement device to remove, transport and place the first abrasive disc, instruct the robotic tool to conduct an abrasive operation. The controller is also configured to send the removal signal. The controller is a processor and the instructions are stored on a non-transitory computer-readable medium and executed by the processor.

A sanding tool attachment includes an annular attachment body, a plurality of dust extraction holes, a tool fastening feature, a primary hook fastening feature, and a secondary fastening feature. The annular attachment body includes a first base wall, a second base wall, a lateral wall, and a central axis. The plurality of dust extraction holes is radially distributed around the central axis and traverses from the first base wall to the second base wall. The tool fastening feature is integrated onto the first base wall so that the sanding tool attachment can be secured to a random orbital sander. The primary hook fastening feature is integrated onto the second base wall and removably secures existing round sanding pads to the sanding tool attachment. The secondary fastener feature is integrated onto the lateral wall thus fastening a rectangular sanding strip to the sanding tool attachment.

The application relates to a backing pad arrangement suitable for an abrading system. The backing pad arrangement comprises a backing pad (413, 513, 523), and an additional layer (418, 518, 528) or an abrading article (417, 527) adapted to be attached to the backing pad (413, 513, 523) with at least one fixing member (319, 419, 519, 529), which at least one fixing member (319, 419, 519, 529) is hollow in its longitudinal direction. The application further relates to the abrading system comprising the backing pad arrangement according to the application.

A device for exchanging a polishing disc that coated with a polishing agent during operation includes the polishing disc being made from a foam material, foam rubber, felt or lambskin and fastened to a support plate of a polishing tool held on a robot. The device includes an exchanging device having at least one dispenser in which a stack of polishing discs is arranged. The dispenser has a discharge opening, the clear width of which is smaller than the assigned dimension of the polishing disc and larger than the assigned dimension of the support plate. An axially movable sliding device on which the stack rests is provided on the side facing away from the discharge opening.

A tool with tool elements, rotating grinding and/or sanding tool is provided. The tool consists of a tool portion and a mounting portion, which secures the tool elements in the tool. The tool is distinguished in that the tool portion comprises first mount, and the mounting portion includes second corresponding mount for engaging with the first mount. The first and second mount include one or more resilient tabs, each of which is provided with at least one barb, and furthermore the mount comprises one or more recesses. When the tool portion and the mounting portion are assembled, the barbs on the resilient tabs will lock in the recesses of the mounting portion which are designed for this, locking the tool portion and the mounting portion to each other.

A tool driver for a power trowel, the tool driver comprising a combination of a magnetic fastening arrangement and a hook and loop based fastening arrangement for releasably holding an abrasive tool to the tool driver, wherein the magnetic fastening arrangement is configured symmetrically around a rotational center of the tool driver, wherein the hook and loop based fastening arrangement is adapted to provide increased shear strength during abrasive operation of the tool, and wherein the magnetic fastening arrangement is adapted to provide increased pull strength during lifting of the tool driver.

A system for replacing an abrasive sheet in a sanding machine including a working head in which it is provided a support body having an engagement surface arranged to engage with an abrasive sheet. The sanding machine also includes a handling device arranged to actuate the support body in space according to at least two degrees of freedom. The system may include a computing device to compute the spatial orientation of the support body. Furthermore, the system may include a removal station having a gripping element configured to grip the abrasive sheet in order to disengage the abrasive sheet from the support body.