Abstract: A drive plate attachable to a driven shaft of a floor-finishing machine has a central circular recess and a plurality of radially extending pockets having beveled side edges formed in a surface thereof. Located in the pocket is a rectangular stabilizing bar. The abrasive tool includes a plate sized and shaped to fit into the pockets when inserted from the central recess and having a groove formed therein for receiving the stabilizing bar. On the surface of the tool plate opposite the groove are abrasive members.

Abstract: A remote operating tool capable of replacing work units contains: a control unit, a connection assembly, and a work unit. The control unit includes a first plier part, a second plier part, and a fixing shaft. The first plier part has a first grip portion and a limitation extension, the second plier part has a second grip portion and an accommodation extension, and the accommodation extension has an aperture. The connection assembly includes a cable and an accommodation sleeve, the cable has a knob, and the accommodation sleeve has a fitting member, wherein the fitting member has a large-diameter section and a small-diameter section. The limitation extension has a first cutout, and the accommodation extension has a second cutout. The control unit further includes a stopper, wherein the defining member is a shell and includes a first chamber.

Abstract: A pipe clamping apparatus of a pipe processing machine includes first and second slide rails on inner and outer end surfaces of the clamping apparatus, a turntable with slot openings, first and second rotating rings with a gear rack, plural linkage modules and plural clamping components. A rod of the pneumatic cylinder is fixed to the inner end surface; the pneumatic cylinder has a rack engaged with the gear rack and is fixed to a block having an oblique slot and a rail slot; and the clamping component has a claw, a slider passing through the slot opening and oblique slot, and a rail slot. Air drives the pneumatic cylinder to move, while the rack is driving the first or second rotating rings to move the opposite pneumatic cylinder in an opposite direction, and the slider slides in the oblique slot to drive the claw to clamp the pipe.

Abstract: The system includes a forward clamping assembly, steady rests and compression assembly upon which the fuselage of a rocket is secured. The forward clamping assembly secures the forward fuselage of the rocket and the steady rests secure the middle fuselage of the rocket. The compression assembly includes a fluted nozzle rotator which engages the flutes of the nozzle of the rocket. Rotation of the nozzle rotator results in torque being applied to the joint connecting the rocket nozzle with the motor casing of the rocket so as to allow insertion or removal of an Ortman key that secures the motor casing and nozzle.

Abstract: A grinding apparatus includes a table that holds a workpiece, and a grinding unit including a grinding wheel mounted to a spindle. The grinding wheel has a grindstone formed by binding abrasive grains with a bonding agent. In addition, the grinding apparatus further includes: a grinding water supply unit that supplies grinding water to at least the grindstone; a light applying unit that is disposed adjacent to the table and that applies light to a grinding surface of the grindstone grinding the workpiece held by the table; and a light applying unit moving section by which the light applying unit can be positioned at a first position on a rotational trajectory of the grinding wheel in the case where the grinding wheel has a first diameter and a second position on a rotational trajectory of the grinding wheel in the case where the grinding wheel has a second diameter.