A system for polishing an outer surface of a specimen, the system including a motor and a rotatable shaft extending from a first end of the motor, wherein the specimen is removably attachable to the rotatable shaft, a safety cover configured to at least partially surround at least a portion of the rotatable shaft, wherein the safety cover includes a top panel, a first side panel and a second side panel spaced from each other across a width of the safety cover and extending downwardly from the top panel, and at least one aperture extending through at least one of the first and second side panels. The system further includes an abrasive material insertable through the at least one aperture so that the abrasive material is positionable to contact the outer surface of the specimen.

A system for polishing an outer surface of a specimen, the system including a motor and a rotatable shaft extending from a first end of the motor, wherein the specimen is removably attachable to the rotatable shaft, a safety cover configured to at least partially surround at least a portion of the rotatable shaft, wherein the safety cover includes a top panel, a first side panel and a second side panel spaced from each other across a width of the safety cover and extending downwardly from the top panel, and at least one aperture extending through at least one of the first and second side panels. The system further includes an abrasive material insertable through the at least one aperture so that the abrasive material is positionable to contact the outer surface of the specimen.

To change the direction of water flowing toward a painted surface so as to flow toward the center side of a hood, a water deflecting member is provided that extends toward the center side of the hood while extending toward the painted surface as seen in a state where automatic wet sanding is performed. Thus, water bouncing off the painted surface is less likely to scatter over a wide area of the painted surface, and sanding dust is also less likely to scatter over a wide area of the painted surface. As a result, it is possible to eliminate the need for the troublesome task of wiping off sanding dust remaining on the painted surface, and to achieve a quality finish on the painted surface.

To change the direction of water flowing toward a painted surface so as to flow toward the center side of a hood, a water deflecting member is provided that extends toward the center side of the hood while extending toward the painted surface as seen in a state where automatic wet sanding is performed. Thus, water bouncing off the painted surface is less likely to scatter over a wide area of the painted surface, and sanding dust is also less likely to scatter over a wide area of the painted surface. As a result, it is possible to eliminate the need for the troublesome task of wiping off sanding dust remaining on the painted surface, and to achieve a quality finish on the painted surface.

A method for manufacturing a wire saw apparatus including a wire supply reel; a long roller; wire guides; a wire winding reel; and a tension arm controlled to move within a control angle of ±A (°) set in advance and configured to apply tension to the wire, the method including the steps of: measuring a surface roughness Rmax of the long roller; measuring an angle a (°) of the tension arm at which the tension arm swings outside a range of the control angle set in advance while the wire is extending from the wire supply reel; calculating R1×2×A÷(|a|+A)=R2, where R1 (μm) represents the measured surface roughness Rmax of the long roller; and adjusting the surface roughness Rmax of the long roller to the calculated numerical value R2 or less. The method for manufacturing a wire saw apparatus can prevent the tension arm from greatly swinging outside the control range.

The present invention relates to a chemical mechanical polishing (CMP) apparatus for polishing a workpiece, such as a metal body, to a mirror finish. The chemical mechanical polishing apparatus includes: a polishing pad (2) having an annular polishing surface (2a) which has a curved vertical cross-section; a workpiece holder (11) for holding a workpiece (W) having a polygonal shape; a rotating device (15) configured to rotate the workpiece holder (11) about an axis of the workpiece (W); a pressing device (14) configured to press a periphery of the workpiece (W) against the annular polishing surface (2a); and an operation controller (25) configured to change a speed at which the rotating device (15) rotates the workpiece (W) according to a rotation angle of the workpiece (W). The pressing device (14) is disposed more inwardly than the workpiece holder (11) in a radial direction of the polishing table (3).

A device for removing a tread from a wheel (e.g., a closing wheel of a planter, a gauge wheel of a planter, a gauge wheel of a cultivator, a gauge wheel of seed drill etc.) includes a body configured to support the wheel, and a fastener coupled to the body. The fastener is configured to engage the wheel when the wheel is supported by the body, and position the wheel on the body, and then compress the wheel against the body to thereby allow removal of a tread from the wheel.

A method for reconditioning a compactor wheel of a compaction machine is provided. The method includes mounting a compactor wheel on a positioning system configured to provide one or more of angular adjustment, vertical and horizontal translation, and rotation of the compactor wheel, so as to position the compactor wheel in a desired position. The method also includes providing a welding system configured to perform a submerged arc strip welding or weld cladding operation on the compactor wheel. The submerged arc strip welding or weld cladding operation is performed on at least one surface or edge of the compactor wheel to add weldable material thereto, so as to recondition the at least one surface or edge of the compactor wheel.

A method of preparing an engine valve is provided. The method includes hot forging a heat resistant steel at 1,150 to 1,250° C. to mold a valve, aging the molded valve and hollowed-out processing the aging valve. Additionally, the method includes nitride-heating the hollow valve and grinding a surface of a neck of the nitride-heated valve to remove a nitride layer.

To change the direction of water flowing toward a painted surface so as to flow toward the center side of a hood, a water deflecting member is provided that extends toward the center side of the hood while extending toward the painted surface as seen in a state where automatic wet sanding is performed. Thus, water bouncing off the painted surface is less likely to scatter over a wide area of the painted surface, and sanding dust is also less likely to scatter over a wide area of the painted surface. As a result, it is possible to eliminate the need for the troublesome task of wiping off sanding dust remaining on the painted surface, and to achieve a quality finish on the painted surface.