Some embodiments of the present disclosure provide a method for judging four key moments in a whole process (a feeding starting moment, an idling process, a cutting starting moment, cutting, a cutting ending moment, an idling process and a feeding ending moment) of a machining step for computer numerical control machine tools. The method includes that: the feeding starting moment and ending moment are determined according to a real-time execution state of a numerical control code; input power of a spindle of a machine tool is compared in real time with idling power to determine the cutting starting moment and ending moment; and for a special machining step in which power does not change obviously in a feeding process, the cutting starting and ending moments are determined in combination with a historical statistical average time of an idling process duration and a feeding moment.

A controller controls a machine tool, which performs thread cutting for a workpiece, according to a machining program. The controller analyzes operating conditions of a cutting-up/cutting-in motion commanded in the machining program and inserts a cutting-up/cutting-in motion created based on the analyzed operating conditions into the thread cutting. In the insertion of the cutting-up/cutting-in motion into the thread cutting, a cycle including a cutting-in operation, a cutting-up operation for separating chips by raising the cutting tool for cutting in the radial direction of the workpiece, and an operation to cause the cutting tool to approach a start position of an immediately preceding cutting-up operation so as not to interfere with the workpiece is repeatedly performed.

A display method includes: converting, by a fitting unit, a position information into a fitting parameter; constructing, by the fitting unit, a first pattern from the position information; constructing, by the fitting unit, a second pattern from the fitting parameter; calculating, by a calculation unit, an offset information between the first pattern and the second pattern; integrating, by an integration unit, the fitting parameter of the fitting unit and the offset information of the calculation unit into a reference information; and constructing, by the integration unit, a third pattern from the reference information. In a human-machine interface applying the display method, when a user enters an amount of tolerance into the human machine interface, the machining path represented by the third pattern is reproduced on the human machine interface. Thus, the display method can simplify operations of processing the machining path and reduce the load on the memory.

The support device acquires locus information in which a position of a machine tool corresponding to an instruction value generated by execution of an NC program is associated with time information indicating a control time using the instruction value, and variable history information in which a value of a variable updated by execution of the sequence program is associated with time information indicating an update time The support device selects a target period in an execution period of a program, displays a portion corresponding to the target period in transition indicated by the locus information on a display device, and displays the value of the variable in the target period on the display device based on the variable history information.

A tool track display device includes a position information acquisition unit which acquires position information of at least one drive axle from a numerical control device and a position sensor provided on the at least one drive axle, a tool coordinate calculation unit which calculates coordinate values of the tool based on the position information of the at least one drive axle and information regarding the mechanical structure of a machine tool, a display attribute modification unit which modifies the display attribute of the tool track in accordance with the motion direction of the tool, and a display unit which displays the tool track based on the coordinate values of the tool calculated by the tool coordinate calculation unit and the display attribute modified by the display attribute modification unit.

Provided is a display device that can automatically identify and display a vibration site and a vibration axis using empty processing. The present invention is a display device 1 that comprises: a trajectory error calculation unit 13 that, on the basis of a movement trajectory of a tool based on actual positions and a movement trajectory of the tool based on command positions, calculates time-sequence data of trajectory errors of the tool; an amplitude calculation unit 14 that calculates the amplitudes of frequency components by frequency analysis of the time-series data of the trajectory errors of the tool; a vibration detection unit 15 that detects a frequency component for which the amplitude of the frequency component exceeds a prescribed threshold value and detects a position corresponding to the detected frequency component as a vibration site; a vibration axis determination unit 16 that, by frequency analysis of time-sequence data of position deviations or torque commands of axes within a time range corresponding to the detected frequency component, determines an axis for which the amplitude of the frequency component identical to the detected frequency component is greatest to be a vibration axis; and a display unit 17 that displays the detected vibration site on the movement trajectory and displays the axis determined to be the vibration axis.

A system and a method is provided in which a CAD system receives a solid model and receives user input to select points on the surface of the solid model, to create a wire part program file based on the selected points, and to transmit the wire part program file to a bending machine. The wire part program files is configured such that the bending machine will manufacture a wire based on the wire part program file.

A display device and a display method to enable, by reducing the amount of data to be displayed, reduction of the time required for display even when the data to be dealt with is three-dimensional coordinate data are obtained.

A display device according to the invention includes a tool-movement-path calculation means 14 to calculate, on the basis of data of a machining program on which movement commands for a tool in a three-dimensional coordinate system are written, tool movement paths through which the tool moves in the three-dimensional coordinate system, a path-replacement-processing unit 19 to replace, on the basis of the tool movement paths calculated by the tool-movement-path calculation means 14 and a predetermined index, consecutive tool movement paths with a replacement path, and a display unit 20 to display the replacement path replaced by the path-replacement-processing unit 19.

A numerical controller performs control to rotate a turret, which holds a plurality of tools on the outer peripheral portion thereof, thereby moving one (selected tool) of the tools selected by a command to a predetermined position (selected position). The numerical controller sets and holds a partial area of the outer peripheral portion of the turret as an area (passage-prohibited area) prohibited from passing through the selected position and determines whether or not the selected tool is present in the passage-prohibited area or whether or not the passage-prohibited area passes through the selected position as the selected tool is moved to the selected position.

A machining simulation device includes a local-region setting unit that sets a local region for a workpiece, an offset-deformation processing unit that offsets and deforms a shape of a part of a whole three-dimensional shape model of the workpiece, for which the local region is set, and generates a local three-dimensional shape model of the workpiece, a local tool-movement-data output unit that outputs local tool movement data from whole tool movement data based on a tool model and movement path data of a tool, a local cutting-deformation processing unit that cuts and deforms the local three-dimensional shape model of a workpiece based on the local tool movement data, and a display superimposing unit that superimposes the cut and deformed local three-dimensional shape model of the workpiece on the whole three-dimensional shape model of the workpiece, and displays the superimposed result.