Patents by Inventor Elmar Schäfers

Elmar Schäfers 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).

  • Publication number: 20200301395
    Abstract: A method and a device operating according to the method automatically generate a control program designed for diagnostic purposes of a production machine or machine tool. The control program is generated using freely selectable parameters and/or machine-specific parameters by an algorithm which defines a movement profile. The movement profile incorporates at least one test run for at least one axis of the respective production machine or machine tool, wherein the at least one test run produces an axis excitation which is suitable for determining at least one mechatronic characteristic variable of the respective axis.
    Type: Application
    Filed: April 23, 2018
    Publication date: September 24, 2020
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Markus Stephan Haschka, Elmar Schäfers, Torsten Schür
  • Patent number: 10744608
    Abstract: A device for damping vibrations of a machine, in particular for damping vibrations of a machine tool, wherein the device includes a first linear motor primary part, a pendulum mass, mounted via at least one supporting sheet-metal assembly provide a relative motion of the pendulum mass along the first linear motor primary part, a first linear motor secondary part fastened to the pendulum mass such that the pendulum mass is actuated via the first linear motor primary part to dampen vibrations of the machine, a second linear motor primary part, and a second linear motor secondary part fastened to the pendulum mass such that the pendulum mass is additionally actuated via the second linear motor primary part to dampen vibrations of the machine so as to achieve an especially compact device that makes it possible to dampen vibrations of machines, in particular machine tools, effectively and without maintenance.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: August 18, 2020
    Assignee: Siemen Aktiengesellschaft
    Inventors: Markus Stephan Haschka, Elmar Schaefers, Torsten Schuer, Dietmar Stoiber
  • Patent number: 10697689
    Abstract: The efficiency of a household appliance device, in particular of a household refrigerator device, is improved. An inner container has at least one inner panel that delimits an interior at least partially. An air exchange unit is formed with at least two flow channels that run substantially parallel and that are in fluidic communication with the interior.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: June 30, 2020
    Assignee: BSH Hausgeraete GmbH
    Inventors: Andreas Lindel, Elmar Faehnle, Felix Wiedenmann, Thomas Schaefer
  • Publication number: 20200192326
    Abstract: An actuator of a machine is controlled by a control device with a controller structure in a normal operating mode and a special operating mode. The control device determines from a position setpoint value and a position actual value a control signal for the actuator. In the normal operating mode, the setpoint values are determined using a utility program, and in the special operating mode by a system program that is different from the normal operating program. In the special operating mode, a frequency characteristic for the actuator is determined on the basis of the sequence of setpoint values and associated actual values, and an evaluation for the actuator and/or of the controller structure is performed using the frequency characteristic and parameters of the controller structure. Depending on the evaluation, a message is transmitted to an operator of the machine or to a computing device over a network.
    Type: Application
    Filed: August 23, 2018
    Publication date: June 18, 2020
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Alexander Kubik, Philipp Rost, Elmar Schäfers, Torsten Schür, Stephen J. Yutkowitz
  • Patent number: 10684605
    Abstract: A control device for a machine, with at least one axis, is configured to accept first parameters and to render a first general technological problem as a first specific technological problem. The control device is configured to determine once in advance, for a sequence of values of a position or a temporal derivation of the position of the axis of the machine, a number of variables assigned to the respective value, to solve the first specific technological problem in an optimum way. The control device is configured to store the assigned variables in a memory and, after the storage of the assigned variables, is configured to accept a first execution command. Based upon the first execution command, it is configured to output the sequence of values to the axis and during output, is configured to activate the machine in accordance with the number of variables assigned to the respective value.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: June 16, 2020
    Assignee: Siemens Aktiengesellschaft
    Inventors: Carsten Hamm, Hartmut Linke, Thomas Puchtler, Gerald Reichl, Elmar Schäfers, Matthias Teuchert
  • Patent number: 10556341
    Abstract: The invention relates to a method (100) for determining an optimised trajectory for a non-productive movement of a tool (10) of a machine tool, from a starting position (12) to an end position (14). The non-productive movement is carried out in a spatially restricted travelling area (20) which is represented by geometric conditions. The method according to the invention is executed with the avoidance of collisions and comprises the step of determining a first trajectory (32) of the tool (10) by means of a travel-finding algorithm. In this step, the first trajectory (32) is optimised for the non-productive movement with respect to at least one selectable target parameter.
    Type: Grant
    Filed: June 3, 2016
    Date of Patent: February 11, 2020
    Assignee: Siemens Aktiengesellschaft
    Inventors: Klaus Geissdörfer, Carsten Hamm, Hartmut Linke, Elmar Schäfers
  • Publication number: 20200041975
    Abstract: An analysis unit and method for determining at least one forming process characteristic of a servo press includes the steps of determining a torque profile of a motor of the servo press, wherein the torque profile belongs to a first cycle of the servo press and wherein the first cycle describes a forming process without an item to be processed by the servo press, determining a torque profile of the motor of the servo press, wherein the torque profile belongs to a second cycle of the servo press and wherein the second cycle describes a forming process with an item to be processed by the servo press, and comparing the torque profile belonging to the first cycle with the torque profile belonging to the second cycle to ascertain the at least one forming process characteristic.
    Type: Application
    Filed: August 5, 2019
    Publication date: February 6, 2020
    Inventors: Bernd Dietz, Gerald REICHL, Elmar SCHÄFERS, Tina STÖCKEL
  • Patent number: 10539946
    Abstract: A closed-loop control device to control a system to be controlled includes a front node, back node, external tapping point, controller and compensating circuit. The compensating circuit has an inner node, frequency filter, front buffer and back buffer. The front node determines a difference; the back node supplies an external sum signal. A setting device automatically suppresses use of the output signal of the front buffer, supplies the back buffer and the back node with a first excitation signal as the compensation signal and detects a first result signal produced by the first excitation signal. The first result signal is one of the control difference, internal sum signal, output filtered signal of the frequency filter or output signal of the front buffer. The setting device evaluates the first excitation signal and the first result signal, sets a parameter of the frequency filter and the second propagation delay.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: January 21, 2020
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Markus Stephan Haschka, Philipp Rost, Elmar Schäfers, Torsten Schür, Björn Seelinger
  • Patent number: 10491195
    Abstract: The invention relates to a method (100) for switching between desired value filters (26, 28) of a drive means (52) for a machine axis (10, 12) during operation. An input signal (20) is applied to the first and to the second desired value filter (26, 28) for producing a first and a second output signal (23, 33). Then any deviation between the first and the second output signal (23, 33) is determined. If the deviation falls below a threshold value, the first desired value filter (26) is separated from the drive means (52) and substantially simultaneously the second desired value filter (28) is connected to the drive means (52). The desired value filters (26, 28) have different running times (19).
    Type: Grant
    Filed: August 9, 2016
    Date of Patent: November 26, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Klaus Geissdörfer, Carsten Hamm, Theo Reichel, Elmar Schäfers, Torsten Schür
  • Patent number: 10481578
    Abstract: A drivetrain for linear movement of a machine component along a linear guide of a machine includes a motor with a motor-measuring system. A length-measuring system is assigned to the linear guide for determining a position of the machine component. To determine rigidity of the drivetrain, a constant acceleration for the machine component is predetermined by a numerical controller for performing closed-loop control of the movement of the machine component. The numerical controller determines a difference between a position of the machine component derived from the motor-measuring system and a position of the machine component measured at the same time by the length-measuring system during the acceleration phase, and the difference is assigned to the acceleration or to a force required for the acceleration and storage in the numerical controller of the pair of values established in this way and/or of a rigidity value emanating from the pair of values.
    Type: Grant
    Filed: November 24, 2016
    Date of Patent: November 19, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: David Bitterolf, Gerhard Forster, Elmar Schäfers, Torsten Schür
  • Patent number: 10386810
    Abstract: A method for operating a technical system, an apparatus and method for determining a movement profile, control apparatus and the actual technical system that includes at least one drive to move at least one axis, wherein at least one optimized movement profile of the axis is calculated with the aid of an optimization method that calculates an optimized movement profile with reference to preset points of a movement profile and/or preset regions of the movement profile, where for simplified and particularly understandable use, the optimization method includes physical boundary conditions from the start of the optimization method, where the use and initialization of the technical system by the user is made more understandable, for example, and where the optimized movement profile is used to control the at least one drive of the technical system.
    Type: Grant
    Filed: December 18, 2015
    Date of Patent: August 20, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventors: Raimund Kram, Uwe Ladra, Hartmut Linke, Elmar Schaefers, Peter Wagner
  • Publication number: 20190047103
    Abstract: A device for damping vibrations of a machine, in particular for damping vibrations of a machine tool, wherein the device includes a first linear motor primary part, a pendulum mass, mounted via at least one supporting sheet-metal assembly provide a relative motion of the pendulum mass along the first linear motor primary part, a first linear motor secondary part fastened to the pendulum mass such that the pendulum mass is actuated via the first linear motor primary part to dampen vibrations of the machine, a second linear motor primary part, and a second linear motor secondary part fastened to the pendulum mass such that the pendulum mass is additionally actuated via the second linear motor primary part to dampen vibrations of the machine so as to achieve an especially compact device that makes it possible to dampen vibrations of machines, in particular machine tools, effectively and without maintenance.
    Type: Application
    Filed: February 16, 2017
    Publication date: February 14, 2019
    Applicant: Siemens Aktiengesellschaft
    Inventors: Markus Stephan HASCHKA, Elmar SCHAEFERS, Torsten SCHUER, Dietmar STOIBER
  • Publication number: 20190018390
    Abstract: A drivetrain for linear movement of a machine component along a linear guide of a machine includes a motor with a motor-measuring system. A length-measuring system is assigned to the linear guide for determining a position of the machine component. To determine rigidity of the drivetrain, a constant acceleration for the machine component is predetermined by a numerical controller for performing closed-loop control of the movement of the machine component. The numerical controller determines a difference between a position of the machine component derived from the motor-measuring system and a position of the machine component measured at the same time by the length-measuring system during the acceleration phase, and the difference is assigned to the acceleration or to a force required for the acceleration and storage in the numerical controller of the pair of values established in this way and/or of a rigidity value emanating from the pair of values.
    Type: Application
    Filed: November 24, 2016
    Publication date: January 17, 2019
    Applicant: Siemens Aktiengesellschaft
    Inventors: DAVID BITTEROLF, GERHARD FORSTER, ELMAR SCHÄFERS, TORSTEN SCHÜR
  • Publication number: 20180241376
    Abstract: The invention relates to a method (100) for switching between desired value filters (26, 28) of a drive means (52) for a machine axis (10, 12) during operation. An input signal (20) is applied to the first and to the second desired value filter (26, 28) for producing a first and a second output signal (23, 33). Then any deviation between the first and the second output signal (23, 33) is determined. If the deviation falls below a threshold value, the first desired value filter (26) is separated from the drive means (52) and substantially simultaneously the second desired value filter (28) is connected to the drive means (52). The desired value filters (26, 28) have different running times (19).
    Type: Application
    Filed: August 9, 2016
    Publication date: August 23, 2018
    Applicant: Siemens Aktiengesellschaft
    Inventors: Klaus Geissdörfer, CARSTEN HAMM, THEO REICHEL, ELMAR SCHÄFERS, TORSTEN SCHÜR
  • Publication number: 20180200887
    Abstract: The invention relates to a method (100) for determining an optimised trajectory for a non-productive movement of a tool (10) of a machine tool, from a starting position (12) to an end position (14). The non-productive movement is carried out in a spatially restricted travelling area (20) which is represented by geometric conditions. The method according to the invention is executed with the avoidance of collisions and comprises the step of determining a first trajectory (32) of the tool (10) by means of a travel-finding algorithm. In this step, the first trajectory (32) is optimised for the non-productive movement with respect to at least one selectable target parameter.
    Type: Application
    Filed: June 3, 2016
    Publication date: July 19, 2018
    Applicant: Siemens Aktiengesellschaft
    Inventors: KLAUS GEISSDÖRFER, CARSTEN HAMM, HARTMUT LINKE, ELMAR SCHÄFERS
  • Patent number: 9859870
    Abstract: A control facility for controlling a controlled system experiencing a disturbance includes a front nodal point receiving a target value and an actual value outputted by the controlled system and supplying a difference value corresponding to a difference between the target value and the actual value to a compensation circuit. The compensation circuit supplies a frequency-filtered and time-delayed signal formed as the sum of the weighted difference value and a weighted feedback signal as an input to a controller for the controlled system. The sum of a filter delay time and of first and second propagation delays is an integer multiple of the cycle duration of the disturbance, and a sum of the filter delay time and the first propagation delay is an integer multiple of the cycle duration minus a propagation time, which elapses until a change in the target value causes a change in the actual value.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: January 2, 2018
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Klaus Geissdörfer, Carsten Hamm, Markus Stephan Haschka, Elmar Schäfers
  • Publication number: 20170329306
    Abstract: A closed-loop control device to control a system to be controlled includes a front node, back node, external tapping point, controller and compensating circuit. The compensating circuit has an inner node, frequency filter, front buffer and back buffer. The front node determines a difference; the back node supplies an external sum signal. A setting device automatically suppresses use of the output signal of the front buffer, supplies the back buffer and the back node with a first excitation signal as the compensation signal and detects a first result signal produced by the first excitation signal. The first result signal is one of the control difference, internal sum signal, output filtered signal of the frequency filter or output signal of the front buffer. The setting device evaluates the first excitation signal and the first result signal, sets a parameter of the frequency filter and the second propagation delay.
    Type: Application
    Filed: May 11, 2017
    Publication date: November 16, 2017
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: MARKUS STEPHAN HASCHKA, PHILIPP ROST, ELMAR SCHÄFERS, TORSTEN SCHÜR, BJÖRN SEELINGER
  • Patent number: 9740179
    Abstract: A control device of a processing machine actuates an axle drive of the processing machine commensurate with a reference displacement movement, displacing a mechanical structure of the processing machine accordingly. The control device determines an absolute movement of the mechanical structure in space and therefrom, taking into account the reference displacement movement of the mechanical structure, a compensation movement for a compensating mass damping a vibration of the mechanical structure. Arranged on the mechanical structure is a compensating drive which acts on the compensating mass. The control device actuates the compensating drive in accordance with the compensation movement, displacing the compensating mass relative to the mechanical structure and thereby damping the vibration of the mechanical structure.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: August 22, 2017
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Uwe Ladra, Elmar Schäfers, Torsten Schür, Dietmar Stoiber
  • Publication number: 20160179079
    Abstract: A method for operating a technical system, an apparatus and method for determining a movement profile, control apparatus and the actual technical system that includes at least one drive to move at least one axis, wherein at least one optimized movement profile of the axis is calculated with the aid of an optimization method that calculates an optimized movement profile with reference to preset points of a movement profile and/or preset regions of the movement profile, where for simplified and particularly understandable use, the optimization method includes physical boundary conditions from the start of the optimization method, where the use and initialization of the technical system by the user is made more understandable, for example, and where the optimized movement profile is used to control the at least one drive of the technical system.
    Type: Application
    Filed: December 18, 2015
    Publication date: June 23, 2016
    Inventors: Raimund KRAM, Uwe LADRA, Hartmut LINKE, Elmar SCHAEFERS, Peter WAGNER
  • Patent number: 9316283
    Abstract: An active vibration damper has a damping device arranged on a vibration-susceptible mechanical structure. A force can be injected directly into the vibration-susceptible mechanical structure with the damping device. A damping force which damps a vibration of the mechanical structure is determined by a control device of the active vibration damper with reference to an absolute movement of the mechanical structure in space. A damping drive of the damping device which is arranged on the mechanical structure is activated by the control device in accordance with the determined damping force such that the determined damping force is injected into the mechanical structure with the damping drive. The control device determines the damping force such that the damping force is proportional at all times to the instantaneous velocity of the mechanical structure.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: April 19, 2016
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Uwe Ladra, Elmar Schäfers, Torsten Schür