Abstract: A method and apparatus is disclosed for texturizing magnetic storage disks. The disk texturizing apparatus utilizes a combination of servomotors for rotating the disk and oscillating the disk towards and away from a texturizing media. The servomotors are controlled by a closed-loop control system which monitors and synchronizes the angular and linear position of the disk. Through such control, the disk rotation speed may be modulated in conjunction with the linear oscillation, thereby allowing a higher degree of triangularity in the texturization pattern. A pattern generation system and a graphical user interface for specifying, modeling, generating, modifying and displaying disk texturizing patterns are also disclosed. The texturizing pattern may be displayed in polar plot and linear plot form so that the user can more easily visualize and design the texturizing pattern.

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 blade sector has a plurality of blades and a circular body connecting the ends of the blades defining its own axis and is finished by the working of a lateral surface of the circular body itself; the working of the lateral outer surface is effected with the use of a disc tool having a shaped cutting surface by arranging the cutting surface of the disc tool in contact with the lateral surface and rotating the sector about an axis distinct from the axis of the circular body and, at the same time as the bladed sector is rotated, displacing the blade sector and the disc tool translationally relative to each other in two directions perpendicular to the first axis in such a way that a distance between the axis of the circular body and the instantaneous point of contact of the lateral surface with the disc tool is kept constant during the entire working of the lateral surface itself.

Abstract: An apparatus and method for sharpening skate blades operate by measuring the length of a skate blade, determining a predetermined profile corresponding to a desired radius of curvature for the blade, and coordinating the motion of a grinding wheel and the blade to grind the blade according to the predetermined profile. A grinding force is applied by the grinding wheel against the blade using a stepper motor coupled through a screw drive, thereby not allowing the grinding wheel to chatter or bounce against the blade. In addition, the blade is clamped end-to-end by a clamping assembly that also determines the length of the blade via the position of the clamp.

Abstract: This invention completely removes a plating layer on the edge faces of a plated steel strip.

Abstract: A method of forming a hydrostatic nut that cooperates with a lead screw for translating a wheel head, or carriage, on a grinding machine, such as a cam grinder. A lead screw, which is externally threaded, is inserted into a cylindrical mold, which is internally threaded. The lead screw is retained therein by pressure plates that seal off opposite ends of the open bore of the mold.A continuous cavity is defined between the internal threads on the nut and the external threads on the lead screw. An epoxy resin or other castable polymer is introduced through an inlet port in the mold into the cavity. The castable polymer is allowed to cure into a rigid mass that adheres to the internal threads on the mold. The lead screw is removed, and the mold may be machined to its final configuration as a hydrostatic nut.At least one helical channel is defined in the outer surface of the rigid mass adhered to the mold.

Abstract: A method of sharpening cutting blades of the type made from bar stock type material, the method comprising producing relief surfaces on the cutting profile surface. The method comprises forming first and second relief surfaces on the cutting profile surface. The first relief surface extends from a location inward of the cutting edge to the back face and is oriented at a first relief angle with respect to a side surface. The second relief surface extends from the cutting edge to the first relief surface and is oriented at a second relief angle with respect to the side surface with the second relief angle being smaller than the first relief angle. The cutting blades may comprise a uniform cross-section and the cutting profile may include a protuberant portion adjacent the top surface of the cutting blades.

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.

Abstract: The invention relates to an apparatus for fine-working or microfinishing of workpiece surfaces, particularly rotationally-symmetrically moved workpieces with oscillating or rotating tools such as honing stones or fine polishing stones, which are in-fed against the workpiece. Dependent on a measured parameter proportional to the machining force, the tool infeed is controlled such that a continuous workpiece material remove with constant removal speed is achieved. The reaction force is measured at any point in the flux of force to determine the machining force.

Abstract: A notch of a wafer is chamfered by a method which is characterized by disposing a rotary disklike grindstone and a wafer to be ground with the disklike grindstone in such a manner that the surfaces thereof intersect each other, relatively moving the grindstone and the wafer toward or away from each other, and meanwhile rotating the wafer within a prescribed angle around the central axis perpendicular to the surface of the wafer thereby effecting a work of chamfering the notch of the wafer in the circumferential direction and/or in the direction of thickness of the wafer.

Abstract: A method of forming a hydrostatic nut that cooperates with a lead screw for translating a wheel head, or carriage, on a grinding machine, such as a cam grinder. A lead screw standard, or master, which is externally threaded, is inserted into a cylindrical mold, which is internally threaded. The standard is retained therein by pressure plates that seal off opposite ends of the open bore of the mold. Beads of wax, or tape, or some other rigid instrumentality, are adhered to the exterior surfaces of the helical threads on the standard, while the rest of the standard is treated with a release coating.A continuous cavity is defined between the internal threads on the nut and the external threads on the standard. An epoxy resin or other castable polymer is introduced through an inlet port in the mold into the cavity. The castable polymer is allowed to cure into a rigid mass that adheres to the internal threads on the mold except for the helical beads.

Abstract: A crankshaft is rotated about its central longitudinal axis and abrasive belts are moved along paths substantially perpendicular to the crankshaft such that the abrasive surfaces of the belts grind the crankpin journals while the crankshaft rotates. The belts are guided independently of one another at the point of contact with the crankpin journals along a variable path according to the position of the crankpin journal around the central longitudinal axis of the crankshaft as the crankshaft rotates. Each belt may be guided by a thin, flat blade across which the belt slides, or it may be guided by a freely rotatable roller in substantially frictionless contact with the belt.