Abstract: A device for processing the finish of work pieces. The device has a feed unit with a slide and an NC-controlled drive, a motorized spindle unit with a motor-driven tool spindle, and a force measurement device. The force measurement device is for measuring the contact pressure that is brought to bear upon the tool spindle in the course of processing a work piece. According to the invention, the motorized spindle unit is seated on the slide with resilient elements that accept the weight of the motorized spindle unit and are movable only in the direction of processing. The slide is supported on leaf springs, which are oriented perpendicular to the direction of advance of the slide. The force measurement device is arranged on the motorized spindle unit and on the slide between the connective elements.

Abstract: The invention relates to a device for the finishing treatment of shaft workpieces, in particular crankshafts and camshafts. The device comprises a carrier, at least one jaw for exerting contact pressure on the workpiece, and a linear guide for guiding the jaw. The linear guide is supported by a transverse guide to form a cross guiding system which follows the rotational motion of the workpiece by revolving around its axis of rotation. The transverse guide contains a main carriage guided on the carrier. The main carriage is radially aligned with respect to the axis of rotation of the workpiece. The main carriage has a fork-shaped head facing towards the side of the workpiece. A guide rail for the linear guide is chucked between the between the legs of the fork-like head.

Abstract: A method for finishing a valve seat for ball valves, in particular for fuel injection valves in internal combustion engines. The workpiece to be finished and a finishing tool are driven in an opposite direction of rotation, whereby the axes of rotation of the workpiece and the finishing tool are aligned with each other at an angle of from 1° to 10°. The finishing tool rests against the inside surface of the workpiece to be finished over its entire circumference. The surface of the workpiece to be treated is provided with a crowned shape. A finishing stone with a wear-resistant and preferably cone-shaped working surface is employed as the finishing tool, whereby a narrow sealing zone with a convex contour in the longitudinal section is produced in the crowned surface of the workpiece by partial removal of material.

Abstract: A brake disk is machined the by first fitting to a wheel hub centered on a hub axis and having a radially projecting flange a wheel bearing having an outer bearing race formed with an axially directed mounting surface for attachment to a motor vehicle. Then the mounting surface of the outer bearing race is clamped axially to a stationary workpiece carrier so as to mount the wheel hub on the workpiece carrier. A brake disk having a pair of opposite faces extending substantially perpendicular to the axis is then secured to the flange and the wheel hub and the brake disk are rotated about the axis. Then the faces of the rotating brake disk are engaged with machining tools to surface machine the faces.

Abstract: An apparatus for finishing a surface of a camshaft extending along an axis with the surface offset from the axis has a drive for rotating the camshaft about the axis, a support displaceable radially of the axis, and a plurality of pusher heads on the support. The heads are movable independently of each other toward and away from the camshaft relative to the support along respective angularly offset pusher axes extending radially of the camshaft. All the pusher heads are biased along the respective pusher axes toward the camshaft axis with substantially the same force.

Abstract: A process for surface grinding of a flange surface of a wheel hub onto which a brake disk can be mounted for a motor vehicle includes the mounting of the wheel bearing on the wheel hub before the grinding operation. An outer bearing ring is then clamped on a stationary support and, as the wheel hub is rotated, the surfaces ground by a cup-shaped grinding disk rotated about an axis parallel to that of the axis of rotation of the hub.

Abstract: An apparatus for precision machining a part-spherical recess of a workpiece has a workpiece holder adapted to hold the workpiece which is rotated thereby about a symmetry axis of the recess and a honing tool which is rotated about a tool axis inclined to the workpiece axis while being urged along tool axis against a surface of the recess to hone the surface. In accordance with the invention a spacer body displaceable generally along the workpiece axis is engageable in a use position with the surface and carries a pair of feelers fixed relative to the spacer body. The feelers are in the use position of the spacer body spaced along the workpiece axis from the spacer body, symmetrically diametrally flank the workpiece axis, and engage the surface.