A method for producing abrasive products and an abrasive product. The abrasive products have a connector protruding therefrom, the connector being one of an interiorly-threaded hub, a protruding shaft and an exteriorly-threaded stud. The method includes a plurality of abrasive flaps secured to one another and to a disk from which the connector protrudes by adhesive. The improvement includes forming the connector separately from the disk and securing thereto after the plurality of abrasive flaps have been secured to the disk.

A chip suction cover is used for a machine tool including: a spindle configured to rotate a tool; and a suction mechanism unit configured to suck chips of a workpiece that are produced in accordance with rotation of the tool. The chip suction cover includes: a hollow body that is provided with an opening through which a rotation central axis of the spindle extends and that is arranged so as to surround the tool; and a cover body that is provided in the hollow body so as to partially close the opening and that is configured to cover a part of a tip end portion of the tool while exposing a remaining part of the tip end portion of the tool. A chip suction cover having such a configuration that improves the efficiency of sucking chips produced due to workpiece machining is provided.

A chip suction cover is used for a machine tool including: a spindle configured to rotate a tool; and a suction mechanism unit configured to suck chips of a workpiece that are produced in accordance with rotation of the tool. The chip suction cover includes: a hollow body that is provided with an opening through which a rotation central axis of the spindle extends and that is arranged so as to surround the tool; and a cover body that is provided in the hollow body so as to partially close the opening and that is configured to cover a part of a tip end portion of the tool while exposing a remaining part of the tip end portion of the tool. A chip suction cover having such a configuration that improves the efficiency of sucking chips produced due to workpiece machining is provided.

A coupling mechanism capable of preventing vibration of a rotating body from occurring due to a lower-bearing friction torque is disclosed. The coupling mechanism includes an upper spherical bearing and a lower spherical bearing disposed between a drive shaft and a rotating body. The upper spherical bearing has a first concave contact surface and a second convex contact surface, and the lower spherical bearing has a third concave contact surface and a fourth convex contact surface. The first concave contact surface, the second convex contact surface, the third concave contact surface, and the fourth convex contact surface are arranged concentrically. A lower-bearing radius of the lower spherical bearing is determined so that a lower-restoring torque is equal to or less than 0, the lower-restoring torque being the sum of a rotating-body friction torque generated in the rotating body due to a rotating-body frictional force between a polishing pad and the rotating body, and a lower-bearing friction torque generated in the rotating body due to a frictional force between the third concave contact surface and the fourth convex contact surface.

An abrasive grinding wheel (10) that comprises an annular body (20) made of abrasive material provided with a central hole (21) and a reducing ring (30) provided with a central attachment hole (32), wherein the reducing ring (30) is inserted into the central hole (21) so that the attachment hole (32) of the reducing ring (30) is coaxial with respect to the central hole (21) of the annular body (20), wherein the reducing ring (30) comprises two opposing enlarged axial end stretches (311 and 312) configured to axially lock the reducing ring (30) to the central hole (21) of the annular body (20).

An abrasive grinding wheel (10) that comprises an annular body (20) made of abrasive material provided with a central hole (21) and a reducing ring (30) provided with a central attachment hole (32), wherein the reducing ring (30) is inserted into the central hole (21) so that the attachment hole (32) of the reducing ring (30) is coaxial with respect to the central hole (21) of the annular body (20), wherein the reducing ring (30) comprises two opposing enlarged axial end stretches (311 and 312) configured to axially lock the reducing ring (30) to the central hole (21) of the annular body (20).

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.

A processing apparatus includes a chuck table that holds a workpiece by a holding face, a processing unit that processes the workpiece with a grinding whetstone or a polishing pad, a movement unit for moving the chuck table and the processing unit parallel to the holding face, a processing feeding unit for moving the chuck table and the processing unit in a direction orthogonal to the holding face, an inspection unit to inspect a process mark of the workpiece during processing, a dressing unit to dress the grinding whetstone or the polishing pad of the processing unit, and a control unit. When a process mark of a size exceeding a threshold value is detected on the process face of the workpiece, the control unit stops processing of the workpiece, and after the grinding whetstone or the polishing pad is dressed, restarts processing.

A processing apparatus includes a chuck table that holds a workpiece by a holding face, a processing unit that processes the workpiece with a grinding whetstone or a polishing pad, a movement unit for moving the chuck table and the processing unit parallel to the holding face, a processing feeding unit for moving the chuck table and the processing unit in a direction orthogonal to the holding face, an inspection unit to inspect a process mark of the workpiece during processing, a dressing unit to dress the grinding whetstone or the polishing pad of the processing unit, and a control unit. When a process mark of a size exceeding a threshold value is detected on the process face of the workpiece, the control unit stops processing of the workpiece, and after the grinding whetstone or the polishing pad is dressed, restarts processing.

An apparatus for abrading a surface is provided. The apparatus includes: a framework with a motor housed therein; a chassis housing a drivetrain, the drivetrain including a drive pulley operative connected to the motor, a plurality of tool assembly pulleys, a belt operatively connecting the drive pulley and the plurality of tool assembly pulleys; a plurality of tool assemblies operatively connected to the drive pulley and the plurality of tool assembly pulleys, each tool assembly including: a tool holder, a tool plate comprising a tool segment with an abrading surface, wherein the tool holder and tool plate are detachably connected by a plurality of equidistantly spaced pins, wherein the number of pins is a multiple of three.