Siemens Aktiengesellschaft

Trumpf Werkzeugmaschinen Gmbh + Co. Kg

Siemens Aktiengesell Schaft

Ralf Spielmann

Thomas Pitz

Christof Sinn

Aleksandra Schermann

Jochen Bretschneider

Michael Krutzke

Philippe Stellwag

Tobias Kreilos

Loay Alkafafi

A method for operating a numerically controlled production machine includes defining a permissible value range determined by the design and construction of the production machine in which, in a normal operation during production of a workpiece, values representing a mechanical or electrical load described by acceleration and/or jolting of at least one component of the numerically controlled production machine are variable, and activating, for producing the workpiece, with a control signal a conservation operation for reducing the mechanical or electrical loads, wherein in the conservation operation the values of acceleration and/or jolting of the at least one component are variable within a part value range that is limited in comparison to the permissible value range.

Method for operating a numerically controlled production machine, and corresponding numerical control

A method for operating a machine tool having a first number of machine axes that are movable via a drive and actuatable via a control unit that is configured such that, relative to a reference point on the machine tool, a coordinates transformation is performed around a second number of machine axes, includes providing a parts program for machining of a workpiece via the machine tool, a second step of determining at least one axis of rotation from among the first number of machine axes and blocking the determined at least one axis of rotation for actuations, determining control commands for a plurality of machine axes, excluding the at least one axis of rotation determined in the second step, and a fourth step in which the at least one axis of rotation determined in the second step is brought into a machining position and a corresponding rotational movement is determined.

Method for operating a machine tool, computer program product, control unit, machine tool, simulation program product and use of the control unit

In a method for operating an at least two-axle machine tool, a geometric description of a path is specified, and according to the path, an advancing movement is carried out by simultaneously moving at least in one section a first axle and a second axle. A first maximum value for a first kinematic parameter relating to the advancing movement along the section of the path is defined by a control unit based on the geometric description. The advancing movement along the section is planned by the control unit by taking the first maximum value into consideration, and the axles are actuated so as to carry out the advancing movement according to the planned movement.

Operating an at least two-axle machine tool

A system program monitors a numerical controller executing a useful program controlling a machine. The numerical controller determines target values for position-controlled axes and controls the position-controlled axes in accordance with the target values. The numerical controller stores resources and determines whether, and optionally to which extent, the resources are enabled or disabled. Enabling or disabling the resources specifies how many processor cores are enabled for use, or how many processor threads are enabled for use, or to what extent a processor cache or a processor main memory are enabled for use, or which hardware components of the numerical controller are enabled for use, or to what extent use of external computing power is permitted. The numerical controller determines the target values for the position-controlled axes using only the enabled resources.

Numerical controller having scalable performance

In a method for severing a solid body, a defined contour is stored in a control unit configured to detect contour breaches and to avoid contour breaches. A high-energy beam is moved along a contour on a surface of the solid body, with the surface of the solid body facing the high-energy beam, to produce with the high-energy beam a cutting gap. The contour on the surface is compared with the defined contour stored in the control unit, and avoidance of the contour breach is automatically deactivated when the contour on the surface of the solid body matches the defined contour and a contour breach is detected. Otherwise, the contour is omitted. Advantageously, the high-energy beam travels along the contour with an averaged line movement.

Method for detecting and processing defined contours during severing of a solid body by means of a high-energy beam

A numerically controlled machine tool has at least one movement axis and is connected to a numerical controller which includes a parts program. Movements of each movement axis are limited by maximum permissible axis dynamics. The parts program has a sequence of instructions for machining a workpiece which specify different maximum desired speeds for the machining of the workpiece which change abruptly over time. The numerical controller approximates the different maximum desired speeds which change abruptly over time with a desired speed profile that is continuous over time and has a profile of the maximum desired speeds which is also continuous over time. The numerical controller uses the continuous desired speed profile to calculate the desired values of an actual movement profile of the movements for each movement axis.

Method for operating a numerically controlled machine tool, and machine tool therefor

A numerically controlled production system is connected to a numerical controller, which includes a control program with successive program sets, and a look-ahead module which determines therefrom for successive clock-cycle points a movement profile with guidance variables for a movement axis prior to a movement. Subject to a condition, the control program includes program branching with multiple alternative control program sections, and determines which of the alternative control program sections is to be additionally executed subject to the condition. The look-ahead module calculates and stores an alternative movement profile for each alternative control program section prior to an additional movement, and holds the alternative movement profile available for the conditional program branching in order to carry out the additional movement.

Method for operating a numerically controlled production system, and production system for same

In a method for 3D radius correction in CNC milling, a mill path of an original milling tool producing a surface contour on a workpiece is calculated for an original milling tool based on dimensions of the mill cutter tip, with the positions of the mill cutter tip specified by an NC program. A surface normal of an end face milling surface and a surface normal of a circumferential milling surface are then specified, for each position of the mill cutter tip taking into account dimensional differences between an actually available milling tool and the original milling tool. By specifying along the mill path a spatial orientation of the milling tool axis, a correction vector is specified from the milling tool orientation, dimensional differences and the surface normals, and the workpiece is machined by traversing the mill path with the actual milling tool under consideration of the correction vector.

Method for 3D radius correction in CNC milling and associated milling machine

A control device, a machine (tool) having the control device, a method for providing a travel profile and a computer program for providing the travel profile, wherein a reference line is generated, e.g., from a CAD drawing, to provide a travel profile for a tool, where approximation curves are created from the reference line using wavelet base functions, transformation curves are formed from the approximation curves via difference generation, and these are each adapted to a desired accuracy of the processing mode via modification, where modification curves are created via the modification of the transformation curves, where the travel profile is the sum of the modification curves, and where drive elements of the machine tool are controlled based on the travel profile such that the travel profile can be optimized via the selection of wavelet base functions, based on a processing mode, e.g. rough milling, fine milling, laser cutting.

Method for providing a travel profile, control device, machine, and computer program

To optimize an automatically optimized machining time for machining a workpiece in a machine tool, an original parts program is loaded into a machine tool controller. The machining of the workpiece using the original parts program is simulated, where a motion path generated by the original parts program in the machine tool is determined. The motion path is classified into at least one area of potential optimization in which there is no workpiece contact. The at least one area of potential optimization is assigned a tolerance space. An optimized motion path is determined within the tolerance space. The machining of the workpiece using the modified parts program is simulated. The optimized motion path is displayed and marked. Once a user has approved the modification in the parts program, machining of the workpiece takes place using the modified parts program.

Method for machining a workpiece in a machine tool with optimized machining time

The invention relates to a method () for orientation of a workpiece () to be processed, comprising the steps of: a) providing a processing path () fixed on the workpiece for processing the workpiece (); b) selecting a rigid transformation () of the positioning of the workpiece (); c) simulating the processing path () taking account of the rigid transformation () of the positioning of the workpiece (); d) determining at least one process variable () of the machining of the workpiece (); wherein the steps b) to d) are repeated by modifying the at least one rigid transformation () of the positioning of the workpiece () until the at least one process variable () reaches a target value ().

Orientation method for workpieces

A subroutine executable by the numeric controller to control a production machine is disclosed. A user selects at least one program instruction of the subroutine and the numeric controller outputs a parameterized description of the selected program instruction or of a sequence of program instructions that contains the selected program instruction to the user using the user interface. The user enters a change in the parameterized description and stores a modified subroutine that corresponds to the changed parameterized description. The numeric controller sends a message to a predetermined address identifying. the original subroutine and the change made in a form that can be evaluated in automated fashion. The CAM system that generated the subroutine uses the message to independently and automatically ascertain a data record on which the original subroutine is based and to modify the data record accordingly.

Numeric controller with notification of a CAM system in the event of a change in the subroutine

A sub-program carried out by a numerical control unit that controls a production machine is disclosed. The numerical control unit transmits a piece of information identifying a program instruction, by means of which the sub-program was generated to a CAM system after the instruction is selected by a user through an operator interface. The numerical control unit receives, a parameterized description of the sequence of program instructions containing the selected program instruction from the CAM system. The numerical control unit outputs the parameterized description to the user via the operator interface and receives a modification of the parameterized description from the user. The numerical control unit then transmits the modified parameterized description to the CAM system and receives a modified sub-program corresponding to the modified parameterized description from the CAM system.

Growing community of inventors

Stuttgart, Germany

Ralf Spielmann