Abstract: One example provides a grinding positioning plate for a reel-type mower unit including a cutting reel having a rotational axis. The grinding positioning plate includes a main body including a pivot element having a pivot axis, and at least one pair of clamping assemblies, each clamping assembly to clamp to a corresponding mounting flange of the reel-type mower unit to mount the main body to reel-type mower unit such that the pivot axis is in parallel with the rotational axis and at a known horizontal distance from the rotational axis.

Abstract: A blade sharpening system for log saw machines is provided. An example multiphase grinding wheel has a grinding face with one or more abrasive concentric rings for sharpening the cutting blade of the log saw machine, and one or more padded concentric rings consisting of fiber padding. Sharpening with the multiphase grinding wheel improves cut quality, increases blade life, removes glues and varnishes from the cutting blade, reduces blade deformation, and hones the edge of the cutting blade. A pneumatic tensioning system uses air bladders to apply a dynamically cushioned pressure between the grinding wheels and the cutting blade. The fiber-padded grinding wheels and the air bladder tensioner provide improved sharpness of the cutting blade and longer life for the mechanical components. The padded grinding wheels decrease fire risk, and the tensioner can be operated remotely, decreasing human injuries common with conventional setup actions near the sharp cutting blade.

Abstract: Complex laminated composites may be repaired by removal of individual damaged plies through peeling in order to exploit the weaker interlaminar properties of these composites. Upon removal of the individual damaged plies through peeling, replacement plies may be added to restore the laminated composite. In addition, when damage extends through the thickness of a laminated composite, a plug may be used to allow plies to be replaced while maintaining contour within the repair region. A caul plate also may be used to stiffen and maintain the contour of a repair region while peeling and removing plies from the repair region.

Abstract: The method is for sharpening a blade. An automatic sharpening apparatus is provided that has a housing with an elongate opening defined therein. A blade is placed inside the elongate opening. The blade is tightened between self-centered clamp holders. The rotation of the grinding wheel is turned on. The rotating grinding-wheel engages an underside of the blade and automatically moves along the blade by following a contour of the blade. While the grinding wheel moves along the blade, a counter-weight provides a counter-weight to the grinding wheel. The blade is sharpened while the blade is stationary inside the elongate opening of the housing.

Abstract: The method is for sharpening a blade. An automatic sharpening apparatus is provided that has a holder. A blade is placed into the holder. A grinding-wheel driving motor, in operative engagement with a wheel on a spindle, rotates a grinding wheel. A grinding assembly motor moves the grinding wheel in an x-direction towards the blade. A linear motor moves the grinding wheel from a first position to a second position in a z-direction without moving the grinding-wheel driving motor. The rotating grinding wheel engages the blade. The grinding wheel sharpens the blade.

Abstract: A grinding/polishing machine includes first and second grinding units. The first grinding unit is mounted slidably on a column on a base support to move along a Z-axis direction, and has a first grinding wheel. The second grinding unit is mounted slidably on the first grinding unit to move along a Y-axis direction and has a second grinding wheel aligned with the first grinding wheel. When the second grinding wheel is in a grinding position, the second grinding wheel is situated between the first grinding wheel and a platform mounted on the base support to hold a workpiece. When the second grinding wheel moves away from the first grinding wheel, the first grinding wheel is movable to the platform for a grinding operation. The first and second grinding wheels have different levels of coarseness/fineness.

Abstract: It comprises a plurality of carrying units mounted on a turntable, with each of the carrying units securing a wheel rim or the like to be polished, and a plurality of polishing units, each one of which includes a polishing element that carries out a polishing operation on the wheel rim, in such a way that for each position of the turntable each one of the carrying units is situated facing a polishing unit. It is characterized in that the central shaft of each carrying unit is inclined with respect to the horizontal by a predetermined angle. It permits to polish a wheel rim or the like completely, and it is not necessary to polish manually the parts of the wheel rim which it is more difficult to reach.

Abstract: The apparatus, especially a grinding machine, comprises a frame (14) on which two working planes (A, B) are used, at least two oscillating elements (11, 12) disposed on one of the planes and each including at least one tool device (15, 16), at least one further tool device disposed on the other plane, and at least one means for generating oscillating motion (20) whereby a reciprocating movement can be generated at the level of each of the oscillating elements, so that the resultant of the vectors representing the dynamic forces associated with the movement of each of the oscillating elements is substantially equal to zero. There is then little or no induced vibration.

Abstract: A machine tool apparatus, and a linear motion track therefore, are disclosed where the linear motion track is comprised of a tube having a circular cross-section with at least two bearings longitudinally disposed on opposite exterior sides of the tube such that the tube forms a pair of arches joined by the two bearings. The tube arches minimize localized bending moments when radial or moment loads are applied to the tube arches through the bearings and from the longitudinally slidable carriage on the tube. In addition to the linear motion track, the machine tool apparatus also includes a table, for supporting a workpiece, to which the linear motion track is attached, and a machine tool attached to the linear motion track.