A lapping device is provided that is capable of precisely lapping a surface of an object having a complicated shape, the lapping device including a driving unit, a shank connected to the driving unit through a driving shaft, and a lapping portion coupled to the shank. The lapping portion includes an abrasive layer and an elastic member between the abrasive layer and the shank.

A self-contained fibrous buffing article comprising at least one layer of a fibrous nonwoven fabric comprising lyocell fiber and having a hardened adherent coating comprising a crosslinked binder, abrasive particles, and a lubricant.

The method includes a step of applying glue including carrying out with a pad printing machine a sequence of steps in which is driven a transfer pad from a glue taking position to an applying position in which the distal surface of the transfer pad is in contact with one surface of one component of the tool and in which is simultaneously driven another transfer pad from a glue taking position to an applying position in which the distal surface of the another transfer pad is in contact with one surface of another component of the tool, whereby the glue is applied simultaneously to the one surface of the one component and to the one surface of the another component.

The method includes applying glue onto one surface of one component of the tool placed in a support of a first supporting member and/or onto one surface of another component of the tool placed in a support of a second supporting member while the support of the first supporting member and the support of the second supporting member are side by side; then driving the first supporting member and the second supporting member relative to one another to a second position where the support of the first supporting member and the support of the second supporting member are aligned; and then pressing the first supporting member and the second supporting member towards one another for applying onto each other the one surface of the one component and the one surface of the another component.

A support assembly for supporting a surface treatment pad on a backing plate mounted on the spindle of a surface treatment tool includes a plurality of petal-shaped segments, each segment separated from an adjacent segment by a radially extending slit. The support assembly, which may be a unitary body printed from a single material using a 3-D printer may include three layers: a rear layer that rests against the backing plate, a front layer that rests against the surface treatment pad and includes the petal-shaped segments, and a compressible central layer interposed between the rear and front layers. The front layer may also include circumferentially extending grooves and ribs.

A grinding tool includes a substrate having a surface provided with a plurality of openings, and a plurality of grinding studs. Each of the grinding studs includes a stud portion and an abrasive particle attached to each other, the stud portions being respectively attached into the openings, and the abrasive particles protruding outward from the surface, each of the abrasive particles having a pattern cut across a tip thereof to define multiple apexes adjacent to one another.

The present disclosure illustrates an eraser wheel assembly structure in which an eraser wheel body is fastened with a shell cover by a fastener, so the eraser wheel body can be driven by the grinding tool to rotate for removing glue. The eraser wheel body is disposed in the shell cover and has a plurality of glue removing blocks. The shell cover has a plurality of positioning studs and configured to respectively insert positioning holes of the eraser wheel body. The shell cover has a blocking wall facing a peripheral edge of the disc-based base and a gap to tolerate a radial extension of the disc-shaped base during operation, so as to prevent the peripheral edge of the disc-shaped base from being escaped from the blocking wall and unable back to its former position because of no gap tolerable for the radial extension of deformed disc-shaped base.

The present disclosure illustrates an eraser wheel assembly structure in which an eraser wheel body is fastened with a shell cover by a fastener, so the eraser wheel body can be driven by the grinding tool to rotate for removing glue. The eraser wheel body is disposed in the shell cover and has a plurality of glue removing blocks. The shell cover has a plurality of positioning studs and configured to respectively insert positioning holes of the eraser wheel body. The shell cover has a blocking wall facing a peripheral edge of the disc-based base and a gap to tolerate a radial extension of the disc-shaped base during operation, so as to prevent the peripheral edge of the disc-shaped base from being escaped from the blocking wall and unable back to its former position because of no gap tolerable for the radial extension of deformed disc-shaped base.

Polishing pad for use with high-speed mechanical buffers or for use by hand. More specifically, a polishing pad and methods of use for the polishing pad, the polishing pad having a foam pad, and having a cloth, a foam, or both attached to a top surface of the foam pad, with the cloth, the foam, or both covering part of the top surface of the foam pad such that gaps in the coverage allow for the foam pad and either the cloth, the foam, or both to touch a polishing surface at the same time.