Abstract: The present invention concerns a brake caliper and a method for assembly of a brake mechanism for a disc brake in said caliper. The caliper surrounds the brake disc on both sides and has a cavity for receiving the brake mechanism. The caliper is of an open design having an opening in the wall furthest from the brake disc. The inside of the caliper may be machined through the opening, before the brake mechanism is assembled in the caliper.

Abstract: The invention involves a tool head 10, which can be rotated around an axis of rotation 24, with a tool-holding fixture 14, 16 for a tool 20 having a cutting edge 18 and with equipment 38, 40, 44 for adjustment of the radial position of the tool cutting edge 18 with regard to the axis of rotation 24. The invention distinguishes itself by the fact that the tool-holding fixture is divided up into a base element 14, which is supported in a first bearing system 40 in a carrier sleeve 44 so as to be able to rotate around the axis of rotation 24, and a tool-holding element 16, which is supported in a second bearing system 38 in the carrier sleeve 44 so as to be able to rotate around an eccentric axis 42 that is positioned in an eccentric fashion, as well as in parallel to, the axis of rotation 24.

Abstract: An eccentric facing unit wherein a tool driving shaft is concentrically disposed in a spindle for relative rotation with respect to the spindle. A tool-shaft supporting shaft is eccentrically disposed in a spindle and is connected with the tool driving shaft through a geared transmission so as to rotate at speed two times faster than that of the tool driving shaft. A tool shaft is eccentrically disposed in the tool-shaft supporting shaft in an eccentricity equal to that of the tool-shaft supporting shaft with respect to the spindle and is connected through an Oldham's shaft coupling with the tool driving shaft for integral rotation therewith.

Abstract: Apparatus is disclosed for finishing the inside of hollow work-pieces such as long hydraulic or pneumatic cylinders. A rotatable skiving and roller burnishing tool is advanced into one end of the work-piece and advanced through the cylindrical interior of the work-piece. The skiving section is located at the front of the skiving and roller burnishing tool, and the roller burnishing section comprises the rearward section of the tool. The skiving section of the tool has a knife holding portion which holds a skiving knife to skive the interior from a start diameter to a larger, finish diameter. The skiving section also has a plurality of cavities, forward of the knife holding section, which are disposed circumferentially around the skiving section of the tool. A plurality of probe centering location finders are located in the respective cavities.

Abstract: A tool head for use in machine tools comprising a base body coupled to a machine spindle, comprising at least one tool-receiving means for a cutting tool, and comprising a rotatable slide mechanism, which eccentrically carries the tool-receiving means, and is rotated about an eccentric axis parallel to the base-body axis with respect to the base body in order to facilitate an adjusting of the cutting radius of the cutting tool. A second rotatable slide mechanism is provided which carries a second eccentric tool-receiving means, and is rotated about a second eccentric axis parallel to the base-body axis with respect to the base body in order to facilitate an adjusting of the cutting radius of the respective cutting tool. Furthermore, transmission means is arranged in the base body to facilitate a simultaneous driving of the two rotatable slide mechanisms.

Abstract: An eccentric facing unit wherein a tool driving shaft is concentrically disposed in a spindle for relative rotation with respect to the spindle. A tool-shaft supporting shaft is eccentrically disposed in a spindle and is connected with the tool driving shaft through a geared transmission so as to rotate at speed two times faster than that of the tool driving shaft. A tool shaft is eccentrically disposed in the tool-shaft supporting shaft in an eccentricity equal to that of the tool-shaft supporting shaft with respect to the spindle and is connected through an Oldham's shaft coupling with the tool driving shaft for integral rotation therewith.

Abstract: A thread-cutting device with a thread-cutting head that rotates and includes a tool guide with at least two pairs of tool slides. The pairs of tool slides can shift radially relative to the axis of rotation and include cutting surfaces. The device also includes a propulsion element that rotates with the thread-cutting head. The propulsion unit includes spiral gear toothing that is indirectly or directly integrally engaged with the pairs of tool slides.

Abstract: A method of rotational milling of a thread on a workpiece and including providing a device having a rotatable workpiece spindle for supporting the workpiece and a rotatable milling cutter spindle for supporting a thread milling cutter, and displacing axially the workpiece spindle and the milling cutter relative to each other by a distance shorter than a length of the thread, while rotating the workpiece spindle and the milling cutter spindle with respective rotational speeds a ratio of which is not equal to 1; and displacing radially the workpiece spindle and the milling cutter spindle relative to each other.

Abstract: A turning lathe for interior cutting of hollow work pieces using a boring rod onto which a tool holder device is fitted and on which there is a mechanism for holding a work piece in such a way that it encloses at least part of the boring rod characterized by the fact that the boring rod is gripped and held in place at both ends and by the fact that the tool holder device is fitted onto the boring rod in such a way that it is movable.

Abstract: A method for forming a spherical concave surface includes the steps of bringing a tool into contact with a material to be formed, rotating the material around a predetermined axis, and moving the tool in a first direction parallel to a central axis of the tool and in a second direction perpendicular to the first direction for forming the spherical concave surface on the material. The method also may include the steps of forming an acute first angle between the central axis and the predetermined axis, and forming an acute second angle between the central axis and a tangent line parallel to the central axis and passing through a first end point of the spherical concave surface.

Abstract: Apparatus is disclosed for finishing the inside of hollow work-pieces such as long hydraulic or pneumatic cylinders. A rotatable skiving and roller burnishing tool is advanced into one end of the work-piece and advanced through the cylindrical interior of the workpiece. The skiving section is located at the front of the skiving and roller burnishing tool, and the roller burnishing section comprises the rearward section of the tool. The skiving section of the tool has a knife holding portion which holds a skiving knife to skive the interior from a start diameter to a larger, finish diameter. The skiving section also has a plurality of cavities, forward of the knife holding section, which are disposed circumferentially around the skiving section of the tool. A plurality of probe centering location finders are located in the respective cavities.

Abstract: A lathe includes a frame for supporting rotatable chucking equipment adapted to hold a work piece. The frame further supports at least one lathe tool for machining the work piece. The chucking equipment and the lathe tool are displaceable relative to each other in at least a radial direction. The lathe includes a housing attached to the frame, with the housing extending about a longitudinal axis and having a cylindrical inner space extending from one end of the housing. The inner space has a longitudinal axis parallel to, though offset from, the longitudinal axis of the housing. An angularly displaceable shaft is arranged in the inner space and carries the chucking equipment. A rotatable outer casing peripherally encloses the cylindrical elongate housing. The rotatable outer casing carries the lathe tool. Rotation of the rotatable outer casing causes the lathe tool to effect a radial displacement relative to the chucking equipment.

Abstract: An apparatus radially adjusts a position of a plurality of tool cartridges of a machine tool having rotatable, concentric, elongate, inner and outer drive spindles. A plurality of pockets are formed through the outer spindle to communication with a passage for the inner spindle. A wedge is disposed in each pocket for longitudinal movement in response to relative rotation of the inner spindle when the inner spindle is in a predetermined selectable position. A rotatable member is disposed in each pocket and has a threaded external surface operably engageable to move the rotatable member longitudinally in response to rotation of the rotatable member with respect to the outer spindle. A tool cartridge is operably engaged within each pocket for radial movement in response to relative movement of the corresponding wedge.

Abstract: A method of machining a differential housing defining a cavity having opposed concave interior surfaces from a workpiece having first and second transverse bores defined therein. A tool having a retractable cutting insert is mounted on a spindle of a machining center, the cutting insert being pivotably mounted within the tool to rotate about a pivot axis and having distal and proximal cutting edges at opposite ends thereof. The tool is inserted into the first bore defined in the workpiece while the cutting insert is retained in a retracted position within the tool. A force is applied to the cutting insert so as to overcome a bias urging the cutting insert into the retracted position, the force being sufficient to urge the distal and proximal cutting edges into contact with corresponding interior portions of the work piece.

Abstract: A method of machining seats of a compressor piston having an approximately hemispherical recess. A surface of a piston extending perpendicular to an axis of the piston is machined by annularly moving a cutting element while the cutting element is rotated with respect to the piston to form an annularly cut portion. The surface is further machined by moving the same cutting element in a direction toward the surface while the cutting element and the piston are relatively rotated to form a hemispherical recess in the surface. The firstly formed annularly cut portion becomes an annular chamfered portion on the periphery of the hemispherical recess. In this way, it is possible to form the hemispherical recess, and the annular chamfered portion on the periphery thereof, with the common cutting tool.

Abstract: A tool for the machining of workpiece surfaces, especially of drilled-hole surfaces, has at least two parts which are displaceable relative to each other. The tool for the machining of the workpiece surfaces is rotatable and includes at least one control member (19) which is displaceable relative to the tool (1) substantially perpendicularly to the axis of rotation (9) of the tool. The control member, preferably from a preset threshold speed of rotation, effects a movement of one part (5) relative to the other (3).