US 12,269,114 B2
Automatic determination of a dynamic laser beam shape for a laser cutting machine
Michael Berger, Bern (CH); Titus Haas, Zofingen (CH); and Simon Scheidiger, Langenthal (CH)
Assigned to BYSTRONIC LASER AG, Niederönz (CH)
Appl. No. 18/701,048
Filed by BYSTRONIC LASER AG, Niederönz (CH)
PCT Filed Oct. 24, 2022, PCT No. PCT/EP2022/079623
§ 371(c)(1), (2) Date Apr. 12, 2024,
PCT Pub. No. WO2023/072846, PCT Pub. Date May 4, 2023.
Claims priority of application No. 21204460 (EP), filed on Oct. 25, 2021.
Prior Publication US 2024/0326160 A1, Oct. 3, 2024
Int. Cl. B23K 26/06 (2014.01); B23K 26/38 (2014.01); B23K 31/00 (2006.01); B23K 31/10 (2006.01)
CPC B23K 26/0604 (2013.01) [B23K 26/38 (2013.01); B23K 31/006 (2013.01); B23K 31/10 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A computer-implemented method for determining a dynamic laser beam shape for laser cutting by means of a laser cutting machine, comprising at least one optical module for varying the shape of the laser beam dynamically, the method comprising:
receiving a cutting plan to be processed for cutting out parts of a workpiece, wherein each part is defined by a cutting contour, including of a set of cutting segments, wherein each workpiece is characterized by a property indicator, selected from a group consisting of a material indicator and/or a thickness indicator;
providing a shape storage, wherein the shape storage is configured for storing a set of dynamic laser beam shapes;
accessing, by a processor, the shape storage and automatically allocating a dynamic laser beam shape from the set of dynamic laser beam shapes to each of the cutting segments iteratively for all parts to be cut out of the workpiece wherein different dynamic laser beam shapes are allocated to different types of the cutting segments and wherein a type of each of the cutting segments is selected from a group, comprising: a straight line; a circle or circle segments with a configurable particular radius; a corner with a configurable angle; a parameterized curve; a pierce-in; a lead-in; a lead-out; and/or an engraving and wherein the dynamic laser beam shapes are allocated to the cutting segments based on the property indicator of the workpiece and is specific for the respective cutting segment;
providing, by the processor, control instructions on an output interface for controlling the laser cutting machine for executing the received cutting plan by applying the determined dynamic laser beams shapes for each cutting segment specifically.