Laser processing device and laser focal length compensation method
A technology of laser processing and focal length, applied in the direction of metal processing equipment, laser welding equipment, manufacturing tools, etc., can solve the problems of welding defects, not on the same level, etc.
Active Publication Date: 2021-01-05
HUATING HEFEI POWER TECH
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Problems solved by technology
However, the existing galvanometer-type lasers also have some problems in actual production, mainly reflected in the fact that due to the great influence of the focal length, the focal points generated by the laser in the central area and edge positions within the laser welding range of the galvanometer are affected by the focus of the field lens , may not be on the same horizontal plane, resulting in welding defects in some areas within the scope of the field lens
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[0047] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is only a part of the embodiments of the present application, but not all the embodiments. The components of the embodiments of the application generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.
[0048] Accordingly, the following detailed description of the embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the application. Based on the embodiments in this application, all other embodiments obtained by persons of ord...
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The invention provides a laser processing device and a laser focal length compensation method. The laser focal length compensation method comprises the following steps that, firstly, a laser beam is emitted by a laser, and the laser beam is polarized by a galvanometer set and reflected to a field lens; then, the focal length compensation value is obtained through a data processing device accordingto the coordinate values of to-be-marked points formed by the laser beam and a preestablished focal length compensation model, the offset value of the field lens is obtained according to the focal length compensation value, and a control signal containing the offset value is sent to a controlling device; and finally, according to the received control signal, the controlling device controls the field lens to offset according to the offset value. According to the method, the focal length compensation model is established in advance, and when marking is carried out, the offset value is obtainedaccording to the coordinate values of the marked points and the focal length compensation model, and the field lens is controlled, and thus the problem that focal points are not in the same horizontalplane due to the fact that the focal points are affected by the focusing of the field lens, so that the making effect is influenced is solved.
Description
technical field [0001] The invention relates to the technical field of laser marking, in particular to a laser processing device and a laser focal length compensation method. Background technique [0002] At present, laser welding, laser marking, laser cutting and other processes are widely used in the manufacturing industry, especially in the emerging new energy industry. Laser welding technology is widely used. At present, the mainstream application of laser technology in the battery industry mainly includes battery inner tab welding, outer surface welding, sealing welding, pole welding, manifold welding and soft connection welding. [0003] Compared with the traditional method, the galvanometer laser welding machine replaces the two-dimensional worktable with a high-speed moving galvanometer scanning film, and cooperates with powerful graphics processing software to realize program-controlled instantaneous multi-point welding, which effectively improves production efficie...
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IPC IPC(8): B23K26/06B23K26/046
CPCB23K26/046B23K26/06
Inventor 杜宏波王保全黄秋桦周鹏
Owner HUATING HEFEI POWER TECH