Patents by Inventor Jochen Bretschneider

Jochen Bretschneider 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: 10974385
    Abstract: Movable elements of a machine are moved by a control device of the machine by controlling drives of the machine. To monitor the movement of the movable elements for collision with each other or with a stationary element, two monitoring devices check, independently from each other, using a computer program, whether there is a risk of collision in the working space. Depending on whether the monitoring devices detect a risk of collision or not, they intervene, independently from each other, in a corrective manner, in the control of the drives or not, and/or independently emit an alarm message or not. The two computer programs are designed in a diverse manner. The two monitoring devices differ from one another. One monitoring device is identical to the control device, while the other monitoring device is embodied as an industrial PC with a data link to the control device.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: April 13, 2021
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Jochen Bretschneider, Jörg Handeck, Steffen Mihatsch, Steffen Schmauder, Curd Weber
  • Publication number: 20210080927
    Abstract: A numerical control system determines iteratively a group of position setpoint values for axes of a production machine based on presets. When no risk of a collision of one moved element with another element exists, the group of position setpoint values is stored in a buffer store. Another already stored group of position setpoint values is read from the buffer store which then controls the axes and moves the element along a path defined by the sequence of the groups of position setpoint values. This process continues for as long as no risk of a collision exists. If a risk of a collision exists, the numerical control system brings the axes to a standstill. Previously unknown real time events are considered only in the determination of the groups of position setpoint values not yet stored in the buffer store. The groups of already stored position setpoint values are not altered.
    Type: Application
    Filed: September 11, 2020
    Publication date: March 18, 2021
    Applicant: Siemens Aktiengesellschaft
    Inventors: Jochen Bretschneider, Stephen Graham, Steffen Mihatsch, Peter Schiffer
  • Publication number: 20210060776
    Abstract: Movable elements of a machine are moved by a control device of the machine by controlling drives of the machine. To monitor the movement of the movable elements for collision with each other or with a stationary element, two monitoring devices check, independently from each other, using a computer program, whether there is a risk of collision in the working space. Depending on whether the monitoring devices detect a risk of collision or not, they intervene, independently from each other, in a corrective manner. In the control of the drives or not, and/or independently emit an alarm message or not. The two computer programs are designed in a diverse manner. The two monitoring devices differ from one another. One monitoring device is identical to the control device, while the other monitoring device is embodied as an industrial PC with a data link to the control device.
    Type: Application
    Filed: August 28, 2018
    Publication date: March 4, 2021
    Applicant: Siemens Aktiengesellschaft
    Inventors: JOCHEN BRETSCHNEIDER, JÖRG HANDECK, STEFFEN MIHATSCH, STEFFEN SCHMAUDER, CURD WEBER
  • Patent number: 10884390
    Abstract: Milling errors are to be prevented by repairing in particular NC parts programs by evaluating spatial information for smoothing a cutting or milling path section instead of evaluating only information along an individual cutting or milling path section. Relationships between adjacent cutting or milling path sections are thus taken into consideration in a smoothing process.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: January 5, 2021
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Jochen Bretschneider, Thomas Pitz
  • Publication number: 20200356067
    Abstract: A machine tool has a tool and a workpiece clamped into a workpiece holder on a workpiece table and a tool. The workpiece table is rotatable about a rotation axis in a position-controlled manner by a plurality of complete revolutions, and the tool is movable at least parallel to the rotation axis in a position-controlled manner. While the workpiece table is rotated, the tool is placed at least temporarily against the workpiece on a side substantially facing away from the workpiece table, machines the workpiece, and the tool is at a distance being at least equal to a predefined minimum distance from the rotation axis. The first workpiece holder is displaced in a direction that has a component towards or away from the rotation axis on the workpiece table in a position-controlled manner during the machining of the first workpiece by the first tool.
    Type: Application
    Filed: October 12, 2018
    Publication date: November 12, 2020
    Applicant: Siemens Aktiengesellschaft
    Inventor: JOCHEN BRETSCHNEIDER
  • Publication number: 20200290166
    Abstract: A machine tool includes a first machine element movable in a travel direction and having first and second side faces. The first and second side faces of the first machine element run parallel to the travel direction and are oriented at a right angle to each other. The first machine element is moved in the travel direction in a guideway of a second machine element by a drive unit in a positionally controlled manner. The machine tool further includes first and second vibration dampers which are oriented at a right angle to the travel direction and configured to dampen vibrations of the first machine element in respective vibration directions. At least one of the first and second vibration dampers is oriented to solely dampen a vibration in a vibration direction that is neither parallel to the first side face nor parallel to the second side face.
    Type: Application
    Filed: March 13, 2020
    Publication date: September 17, 2020
    Applicant: Siemens Aktiengesellschaft
    Inventors: Jochen BRETSCHNEIDER, Uwe LADRA, Elmar SCHAFERS, Torsten SCHOR
  • Publication number: 20200061832
    Abstract: The invention relates to a method for the assessment of a drive system (22) of a machine tool (21) or of a production machine (21), the drive system (22) having an axis (23, 24, 25), wherein a load of the drive system (22) is simulated, a drive profile (20) being used for simulation, actual values of the drive system (22) being simulated, the simulated actual values (40) being correlated with comparative values (41). The drive system (22) has at least one axis (23, 24, 25), a simulated load of the drive system (22) being correlated with at least one comparative value (41) on the basis of a drive profile (20).
    Type: Application
    Filed: February 26, 2018
    Publication date: February 27, 2020
    Applicant: Siemens Aktiengesellschaft
    Inventors: Jochen Bretschneider, MAXIMILIAN KLAUS, DAVID BITTEROLF, CARSTEN HAMM, THEO REICHEL
  • Patent number: 10513034
    Abstract: A method of controlling a non-productive movement of a tool from a starting position to an end position in a travel envelope of a machine tool includes the steps of a) providing a collision-free first trajectory for the non-productive movement of the tool, b) determining a second trajectory that is improved over the first trajectory with regard to a selectable target parameter using an algorithm, and c) checking the second trajectory for collisions and, if the second trajectory is free of collisions, providing an instruction corresponding to the second trajectory. The first trajectory in step a) includes plural rectilinear segments and the second trajectory in step b) includes a polynomial segment and, if the second trajectory is not free of collisions in step c), steps b) to c) are repeated so that the algorithm is provided with a modified model of the travel envelope in a repeat of step b).
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: December 24, 2019
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Jochen Bretschneider, Hartmut Linke
  • Patent number: 10365627
    Abstract: A numerical controller of a processing machine determines corresponding setpoint axis values based on setpoint position values for position-regulated axes operating on machine elements. Before controlling the position-regulated axes, volumes to be occupied by protection bodies associated with the machine elements, a workpiece and a tool are defined and it is checked whether the protection bodies remain disjoint while controlling the position-regulated axes. Depending on the result of the checks, the controller either controls the position-regulated axes in accordance with the setpoint position values or merely executes an error response without control. The controller contains a position error field which specifies for any given setpoint axis value an actual position the tool relative to the workpiece.
    Type: Grant
    Filed: March 13, 2015
    Date of Patent: July 30, 2019
    Assignee: Siemens Aktiengesellschaft
    Inventor: Jochen Bretschneider
  • Patent number: 10126729
    Abstract: A control device of a machine with a plurality of position-controlled axes controls the position-controlled axes in accordance with a part program while processing a system program. Through the control of the position-controlled axes, an end effector is moved along a track defined by the part program via at least one intermediate element relative to a base body of the machine under position control. While processing the system program, the control device checks before control of the position-controlled axes with a parameterizable model of the machine, whether the end effector can move along the track without collisions. Before checking the part program, the control device receives initial measured values characteristic of an actual configuration of the machine, determines parameters of the model based on the initial measured values and parameterizes the model in accordance with the determined parameters.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: November 13, 2018
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jochen Bretschneider, Jens Stefan Ciesielski
  • Publication number: 20180314227
    Abstract: A method and control apparatus for generating control data for controlling a tool on a machine tool for machining a clamped-in workpiece, the machine tool having a control apparatus and a tool for controlling the tool, comprising: generating a path program using a setpoint geometry of generated setpoint parameters, the path program describing a path having supporting points and line elements; controlling the machine tool according to the generated path program; detecting actual parameters by a feedback loop; iteratively optimizing the path program using the detected actual parameters for generating a new path program with a new path, the new path program being dynamically supplied in real time and the new path program dynamically changing and/or dynamically replacing the previous path program; providing CAM functionality for changing an order of the supporting points; and embodying both the path program and the new path program as a CNC program.
    Type: Application
    Filed: September 1, 2016
    Publication date: November 1, 2018
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Jochen BRETSCHNEIDER
  • Publication number: 20180209839
    Abstract: In a method for detecting self-excited vibrations of a separating machine tool or of a tool of the separating machine tool or of a workpiece machined by the separating machine tool, detecting while the workpiece is machined by the separating machine tool, a measurement signal representing a physical variable; forming from the measurement signal a reference signal and a filtered filter signal; generating, with an envelope curve demodulator, from the reference signal an envelope curve reference signal and from the filtered filter signal an envelope curve filter signal; comparing the envelope curve reference signal with the envelope curve filter signal and generating at least one first comparison value defined as a ratio of a magnitude of the envelope curve reference signal and a magnitude of the envelope curve filter signal, and detecting the self-excited vibrations based on the first comparison value.
    Type: Application
    Filed: June 16, 2016
    Publication date: July 26, 2018
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: DAVID BITTEROLF, JOCHEN BRETSCHNEIDER, PHILIPP SIEGEL
  • Publication number: 20180207799
    Abstract: A method of controlling a non-productive movement of a tool from a starting position to an end position in a travel envelope of a machine tool includes the steps of a) providing a collision-free first trajectory for the non-productive movement of the tool, b) determining a second trajectory that is improved over the first trajectory with regard to a selectable target parameter using an algorithm, and c) checking the second trajectory for collisions and, if the second trajectory is free of collisions, providing an instruction corresponding to the second trajectory. The first trajectory in step a) includes plural rectilinear segments and the second trajectory in step b) includes a polynomial segment and, if the second trajectory is not free of collisions in step c), steps b) to c) are repeated so that the algorithm is provided with a modified model of the travel envelope in a repeat of step b).
    Type: Application
    Filed: June 9, 2016
    Publication date: July 26, 2018
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: JOCHEN BRETSCHNEIDER, HARTMUT LINKE
  • Publication number: 20170257370
    Abstract: A computer system includes a control device for controlling an industrial technical process, a logic unit and a memory device. The control device controls the industrial technical process in an operating cycle. It temporarily stores process data in the memory device when controlling the industrial technical process in an operating cycle. The logic unit accepts a request for the process data from an external computer outside of the computer system via an interface to a computer network. The logic unit transfers the process data stored in the memory device to the external computer in accordance with the request in an event of the request fulfilling an access condition. Otherwise, the logic unit preprocesses the process data stored in the memory device, so that the preprocessed process data have a reduced information content by a comparison with the stored process data.
    Type: Application
    Filed: March 3, 2017
    Publication date: September 7, 2017
    Applicant: Siemens Aktiengesellschaft
    Inventor: Jochen Bretschneider
  • Publication number: 20160124397
    Abstract: A handheld unit for an industrial technical system comprising some of the following: a proximity sensor, an acceleration sensor, an orientation sensor, a position-determining device and an image-capturing device. Commands input by a user to the handheld unit and output signals from the modules are fed to an evaluation device in the handheld unit that transmits control commands to a control device in the industrial technical system. The evaluation device compares output signals of the modules to predetermined first signal patterns and transmits commands that activate components in the industrial technical system to the control device only if the command requested and the output signals of the modules match one of the predetermined first signal patterns. Otherwise the evaluation device does not transmit the control commands.
    Type: Application
    Filed: August 27, 2013
    Publication date: May 5, 2016
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventors: JOCHEN BRETSCHNEIDER, OLE DRAEGER, WERNER EBERLEIN
  • Publication number: 20150355622
    Abstract: Milling errors are to be prevented by repairing in particular NC parts programs by evaluating spatial information for smoothing a cutting or milling path section instead of evaluating only information along an individual cutting or milling path section. Relationships between adjacent cutting or milling path sections are thus taken into consideration in a smoothing process.
    Type: Application
    Filed: June 5, 2015
    Publication date: December 10, 2015
    Applicant: Siemens Aktiengesellschaft
    Inventors: Jochen Bretschneider, Thomas Pitz
  • Publication number: 20150261201
    Abstract: A numerical controller of a processing machine determines corresponding setpoint axis values based on setpoint position values for position-regulated axes operating on machine elements. Before controlling the position-regulated axes, volumes to be occupied by protection bodies associated with the machine elements, a workpiece and a tool are defined and it is checked whether the protection bodies remain disjoint while controlling the position-regulated axes. Depending on the result of the checks, the controller either controls the position-regulated axes in accordance with the setpoint position values or merely executes an error response without control. The controller contains a position error field which specifies for any given setpoint axis value an actual position the tool relative to the workpiece.
    Type: Application
    Filed: March 13, 2015
    Publication date: September 17, 2015
    Applicant: SIEMENS AKTIENGESELLSCHAFT
    Inventor: JOCHEN BRETSCHNEIDER
  • Publication number: 20150094848
    Abstract: A control device of a machine with a plurality of position-controlled axes controls the position-controlled axes in accordance with a part program while processing a system program. Through the control of the position-controlled axes, an end effector is moved along a track defined by the part program via at least one intermediate element relative to a base body of the machine under position control. While processing the system program, the control device checks before control of the position-controlled axes with a parameterizable model of the machine, whether the end effector can move along the track without collisions. Before checking the part program, the control device receives initial measured values characteristic of an actual configuration of the machine, determines parameters of the model based on the initial measured values and parameterizes the model in accordance with the determined parameters.
    Type: Application
    Filed: September 26, 2014
    Publication date: April 2, 2015
    Inventors: Jochen Bretschneider, Jens Stefan Ciesielski
  • Patent number: 8322698
    Abstract: The invention relates to a method for reducing vibrations of a machine element (9) and/or a workpiece (5) in a machine tool, a production machine and/or in a machine which is embodied as a robot. A clamping force (F), which is used to lock the workpiece (5) and which makes the workpiece holder (2a, 2b, 2c, 2d, 2e, 11a, 11b) act upon the workpiece (5), is modified when vibrations occur. The invention also relates to a corresponding machine. Due to said invention, vibrations of a machine element (9) and/or a workpiece (5), which occur during a machining process, are reduced.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: December 4, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jochen Bretschneider, Maximilian Klaus
  • Patent number: 8152422
    Abstract: A control method for a tool machine is provided. The machine tool includes adjustment devices which are used to produce relative displacement between a machining head and a work piece. The adjustment movements are detected by sensors associated with the adjustment devices. A value for the relative displacement from the machining head to the work piece is determined from the signals of the sensors associated with the adjustment devices. The adjustment devices are controlled according to the value of relative displacement in order to produce predetermined adjustment movements. State variables which describe relative displacement between the machining head and work pieces are detected in at least one additional sensor. The state variables are taken into account when the value for the relative displacement is determined.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: April 10, 2012
    Assignee: Siemens Aktiengesellschaft
    Inventors: Jochen Bretschneider, Hans Vogler