The invention relates to a method for collision avoidance of a laser machining head (102) in a machining space (106) of a laser machining tool (100), having the steps of; Monitoring a workpiece (112) in the machining space (106) with at least one optical sensor; Capturing images of the workpiece (112); Detecting a change in an image of the workpiece (112); Recognising whether the change comprises an object standing upright relative to the workpiece (112); Checking for a collision between the upright object and the laser machining head (102) based on a predetermined cutting plan and/or the current position (1016) of the laser machining head; Controlling the drives for moving the laser machining head (102) for collision avoidance in case of recognised risk of collision.

A numerical controller, which can handle information on a use tool, calculates the shape of a workpiece being machined, based on an input machining program, shape information of the use tool, shape information of a unmachined workpiece, and a tool trajectory, and sets, as a movable range of the tool, a range in which the tool never contacts the workpiece being machined, based on the calculated shape of the workpiece being machined, if manual operation is performed during machining.

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.

An information processing device controls operation trouble or a calculation amount related to a machine interference check by automatically creating a three-dimensional model optimal for the machine interference check. The information processing device optimizes, for the interference check, three-dimensional model data of a machine including a plurality of structures. The information processing device includes a check object selection unit that performs selection among the structures, and a model creating unit that creates three-dimensional model data for an interference check which data includes the selected structure. Since the information processing device can generate three-dimensional model data optimized for an interference check, there is no trouble for a user to create new three-dimensional model data by himself/herself, and a simple and effective interference check can be realized.

A control device includes: a storage unit that stores a working program and a tool length correction amount; a control unit that causes a table and a spindle to relatively move on the basis of the working program and the tool length correction amount; a region setting unit that sets an interference checking region including a tool held by the spindle on the basis of the tool length correction amount; and an interference determination unit that determines whether the interference checking region interferes or not with obstacles in surroundings of the tool in a case in which the tool and the table are caused to relatively move on the basis of the working program and the tool length correction amount.

The present invention relates to a method for parallelized simulation of the movement of a machine component in or near a work object, wherein: a planned trajectory of the machine component is divided into several trajectory portions; a simulation of at least a first trajectory portion and a second trajectory portion is performed at least partly in parallel yielding simulation results, wherein the simulation comprises determining incidents, preferably collisions, along the trajectory portions; at least the simulation results of the first trajectory portion and the second trajectory portion are merged yielding a merged simulation result; and the merged simulation result is outputted.

A numerical controller, which can handle information on a use tool, calculates the shape of a workpiece being machined, based on an input machining program, shape information of the use tool, shape information of a unmachined workpiece, and a tool trajectory, and sets, as a movable range of the tool, a range in which the tool never contacts the workpiece being machined, based on the calculated shape of the workpiece being machined, if manual operation is performed during machining.

An information processing device controls operation trouble or a calculation amount related to a machine interference check by automatically creating a three-dimensional model optimal for the machine interference check. The information processing device optimizes, for the interference check, three-dimensional model data of a machine including a plurality of structures. The information processing device includes a check object selection unit that performs selection among the structures, and a model creating unit that creates three-dimensional model data for an interference check which data includes the selected structure. Since the information processing device can generate three-dimensional model data optimized for an interference check, there is no trouble for a user to create new three-dimensional model data by himself/herself, and a simple and effective interference check can be realized.

A numerical control apparatus acquires a before-machining workpiece shape and an after-machining part shape from a cycle command analyzer that analyzes a machining cycle command and from the analysis result. Then, based on the workpiece shape and the part shape, a machining field is determined, and a toolpath of the tool of the machine tool is generated based on the machining field. Based on the shape and the position of the predetermined obstacle and the toolpath, it is determined whether the obstacle is expected to interfere with the tool. When the obstacle is determined to interfere with the tool, the toolpath is modified so that the obstacle will not interfere with the tool.

The numerical controller detects an abnormal interference between targets for interference check in a machine tool, including a tool and a workpiece, based on a machining program. The numerical controller changes a direction (contactable direction) in which the tool can contact the workpiece for machining and determines that an interference between the tool and the workpiece is abnormal if the tool compensation direction of radius compensation is not included in the changed contactable direction for the tool.