Patents by Inventor Hans Schrod

Hans Schrod has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5765270
    Abstract: The invention discloses a method of machining workpieces such as crankshafts, camshafts or similarly shaped members, having surfaces which are disposed both concentrically and also eccentrically relative to a workpiece axis and which are rotationally symmetrical or approximately rotationally symmetrical. The machining of the concentrically curved surfaces is effected by means of turning, rotational broaching and/or turning-rotational broaching and the machining of the eccentric workpiece surfaces is effected by means of end-milling wherein the axis of rotation of the milling cutter is transverse with respect to the spindle axis 3, and the workpiece is subjected to cutting finishing machining and the clamping means.
    Type: Grant
    Filed: December 22, 1995
    Date of Patent: June 16, 1998
    Assignee: Boehringer Werkzeugmaschinen GmbH
    Inventors: Hans Schrod, Wolf-Dietrich Voss, Rolf Santorius, Paul Dieter Schapf, Anton Horsky, Matthias Kohlhase
  • Patent number: 5078556
    Abstract: The present invention relates to a method and an apparatus for the finish-machining of the bearing diameters, particularly the main bearing diameters and of the adjoining cheek side surfaces on crankshafts and similar workpieces in a single chucking. In order that this machining can be carried out rapidly and nevertheless with a high quality of production, the following method steps are carried out, one after the other: milling of the cheek side surfaces to nominal size up to the bearing diameter; turning of the bearing diameter down to a small oversize; turning-broaching of the bearing diameters to nominal size in order to obtain a good quality surface, and possibly turning/turning-broaching of recesses, clearance cuts and undercuts in the region of the bearings.
    Type: Grant
    Filed: September 12, 1990
    Date of Patent: January 7, 1992
    Assignee: Boehringer Werzeugmaschinen GmbH
    Inventors: Hans Schrod, Wolf-Dietrich Voss