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 rotating apparatus includes a body connected to a power generation part to rotate a member to be rotated and comprises a driving shaft formed at a side thereof and coupled to the power generation part, a disc-shaped seating part formed at another side thereof, multiple fixing protrusions protruding at an uniform interval on an edge portion of an upper surface of the seating part, a boss protruding from the center thereof, and multiple latching protrusions formed on the outer peripheral surface of the boss; a locking part coupled to the upper surface of the seating part to make in contact with the upper surface of the seating part, and a reverse rotation prevention means maintaining a coupling state between the locking part and the body.

A polishing device (1) includes a polishing brush (3) and a polishing brush holder (4) that holds the polishing brush (3). The polishing brush holder (4) includes a shank (6), a support mechanism (21) that has a sleeve (7) and supports the polishing brush (3) so as to be movable in an axial direction L of the shank (6), and a moving mechanism (22) that moves the polishing brush (3) in the axial direction L. The polishing brush holder (4) includes a pressure sensor (53) that detects a load (sensor detection pressure (P)) applied from a workpiece (W) to the polishing brush (3) when the workpiece (W) is polished by the polishing brush (3) supported by the support mechanism (21), and a control unit (51) that drives the moving mechanism (22) on the basis of the output (sensor detection pressure (P)) from the pressure sensor (53) to move the polishing brush (3) in the axial direction L.

A polishing device (1) includes a polishing brush (3) and a polishing brush holder (4) that holds the polishing brush (3). The polishing brush holder (4) includes a shank (6), a support mechanism (21) that has a sleeve (7) and supports the polishing brush (3) so as to be movable in an axial direction L of the shank (6), and a moving mechanism (22) that moves the polishing brush (3) in the axial direction L. The polishing brush holder (4) includes a pressure sensor (53) that detects a load (sensor detection pressure (P)) applied from a workpiece (W) to the polishing brush (3) when the workpiece (W) is polished by the polishing brush (3) supported by the support mechanism (21), and a control unit (51) that drives the moving mechanism (22) on the basis of the output (sensor detection pressure (P)) from the pressure sensor (53) to move the polishing brush (3) in the axial direction L.

The subject of the present invention is a rotationally drivable rotary tool device and in particular a rotary brush tool. The invention is equipped, in its basic construction, with a tool holder (1, 2) having at least one drive-side clamping element (1) and a tool-side clamping element (2). The two clamping elements (1, 2) are connected releasably together and receive a rotary tool (5, 6). Furthermore, the two clamping elements (1, 2) ensure that the rotary tool (5, 6) is held. According to the invention, the tool-side clamping element (2) and the rotary tool (5, 6) define a structural unit (2, 5, 6). To this end, the clamping element (2) in question is configured as a holding cage (2) that encloses the rotary tool (5, 6) radially and axially at least in part.

The subject of the present invention is a rotationally drivable rotary tool device and in particular a rotary brush tool. The invention is equipped, in its basic construction, with a tool holder (1, 2) having at least one drive-side clamping element (1) and a tool-side clamping element (2). The two clamping elements (1, 2) are connected releasably together and receive a rotary tool (5, 6). Furthermore, the two clamping elements (1, 2) ensure that the rotary tool (5, 6) is held. According to the invention, the tool-side clamping element (2) and the rotary tool (5, 6) define a structural unit (2, 5, 6). To this end, the clamping element (2) in question is configured as a holding cage (2) that encloses the rotary tool (5, 6) radially and axially at least in part.

A bayonet coupling for mounting of a tool on a drive shaft of a machining unit is provided. The drive shaft is connected to the tool via a bayonet coupling, which includes two coupling parts. The one coupling part is provided with a receiving groove for an engaging tab placed on the other coupling part. The receiving groove has a first section with an extension parallel to the axis of rotation and the second section of the receiving groove has an extension transverse, perpendicular, to the axis of rotation, so that the tool is driven via the engagement of the bayonet coupling.

An operation control unit includes a storage device storing a program which includes commands of: obtaining a correlation between a supply position of the polishing liquid in the radial direction of the polishing pad using the liquid injection nozzle and an average polishing rate of the substrate and an distribution of the polishing rate within the substrate; determining a movable range of the liquid injection nozzle according to a predetermined range of an allowable average polishing rate and the correlation between the supply position of the polishing liquid and the average polishing rate; determining an optimal supply position of the polishing liquid from the correlation between the supply position of the polishing liquid and the distribution of the polishing rate within the substrate within the determined movable range of the liquid injection nozzle; and moving the liquid injection nozzle to the determined supply position to polish the substrate.

An operation control unit includes a storage device storing a program which includes commands of: obtaining a correlation between a supply position of the polishing liquid in the radial direction of the polishing pad using the liquid injection nozzle and an average polishing rate of the substrate and an distribution of the polishing rate within the substrate; determining a movable range of the liquid injection nozzle according to a predetermined range of an allowable average polishing rate and the correlation between the supply position of the polishing liquid and the average polishing rate; determining an optimal supply position of the polishing liquid from the correlation between the supply position of the polishing liquid and the distribution of the polishing rate within the substrate within the determined movable range of the liquid injection nozzle; and moving the liquid injection nozzle to the determined supply position to polish the substrate.

A rotary wire brush, such as a wheel brush, e.g., double-stringer or dually brush, cup brush, bevel brush, or knotted end brush, composed of knotted brush wire tufts of multistrand construction each having at least a plurality of brush wire strands, preferably at least a plurality of pairs of, i.e., at least three, strands each formed of at least a plurality, preferably at least a plurality of pairs of, i.e., at least three, wires. The wires forming strands are twisted, braided, or twisted and braided, and the strands that form tufts are twisted, braided, or twisted and braided. A preferred brush employs a center disc, e.g., hub, with radially offset tuft anchor holes, which can have different sizes, from which twist knot tufts, which also can have different sizes, can outwardly extend from the disc different distances by being configured with an offset trim preferably having different trim lengths