Patents by Inventor Patrick MAINDA

Patrick MAINDA 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: 10160025
    Abstract: A deep drawing die is provided having a top die with a hold-down clamp, a bottom die with a die plate, and at least one device arranged in a flange region, by which the distance between the hold-down clamp and the die plate can be modified in portions or partially. A method for deep drawing a workpiece with a deep drawing die includes inserting a workpiece between top and bottom dies, deep drawing by closing the dies, and controlling at least one actuator to generate a holding force during deep drawing. By selectively increasing forces in the flange feed at selected locations between hold-down clamp and die plate, it is possible to control the flow of material into the die plate and relieve load on regions having high deforming work, so that tears or cracks at these points in the finished component can be prevented.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: December 25, 2018
    Assignee: Audi AG
    Inventors: Hans-Jürgen Roscher, Klaus Wolf, Patrick Mainda, Matthias Kerschner
  • Publication number: 20150202675
    Abstract: A deep drawing die is provided having a top die with a hold-down clamp, a bottom die with a die plate, and at least one device arranged in a flange region, by which the distance between the hold-down clamp and the die plate can be modified in portions or partially. A method for deep drawing a workpiece with a deep drawing die includes inserting a workpiece between top and bottom dies, deep drawing by closing the dies, and controlling at least one actuator to generate a holding force during deep drawing. By selectively increasing forces in the flange feed at selected locations between hold-down clamp and die plate, it is possible to control the flow of material into the die plate and relieve load on regions having high deforming work, so that tears or cracks at these points in the finished component can be prevented.
    Type: Application
    Filed: March 20, 2015
    Publication date: July 23, 2015
    Inventors: Hans-Jürgen ROSCHER, Klaus WOLF, Patrick MAINDA, Matthias KERSCHNER