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Closed loop laser energy control method and system

A technology of laser energy and control method, used in laser welding equipment, manufacturing tools, welding equipment, etc., can solve problems such as poor cutting quality, and achieve the effect of improving cutting quality and reducing the influence of unstable factors

Inactive Publication Date: 2013-07-24
KUNSHAN THETA MICRO
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to at least solve one of the above-mentioned technical defects, especially solve the problem of poor cutting quality of existing cutting methods

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  • Closed loop laser energy control method and system
  • Closed loop laser energy control method and system

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Embodiment Construction

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be noted that unless otherwise specified and limited, the term "connection" should be understood in a broad sense, for example, it can be a fixed connection, an integral connection, or a detachable connection; it can be The internal communication between two elements can be direct connection or indirect connection through an intermediary. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific situation....

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Abstract

The invention provides a closed loop laser energy control method and a closed loop laser energy control system. The closed loop laser energy control method comprises the following steps of setting a variable to follow the vector speed of a cutting shaft systemin realtime; acquiring real-time average power output by a laser in real time through an analog input interface and performing proportional-integral (PI) operation according tothe difference betweenthe averagepower and the variable to perform closed loop control over output power of the laser; and controlling pumping current of the laser in real time according to an output signal. According to the closed loop laser energy control method and the closed loop laser energy control system, the power can be adjusted in real time by enabling the laser output power to follow the vector speed of cutting of a platform, and closed loop control is performed, so that the influence of unstable factors in a cutting process is reduced, thereby improving the cutting quality.

Description

[0001] technical field [0002] The invention belongs to the technical field of laser processing, and relates to an energy control method, in particular to a closed-loop laser energy control method; meanwhile, the invention also relates to a closed-loop laser energy control system. [0003] Background technique [0004] Laser cutting is widely used in SMT due to its simple process, fast speed, small slit width, good incision parallelism, small surface roughness, high dimensional accuracy, small workpiece deformation and heat-affected zone, no mechanical stress and surface damage, etc. In template production, the smoothness of the surface after laser cutting and the smoothness of the incision are directly related to the feasibility of the subsequent process. [0005] In actual production, the laser energy control method based on the continuous laser modulation mode is mostly based on the premise that the frequency is constant, and the laser receives an invariable pulse wi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/42B23K26/38B23K26/70
Inventor 魏志凌宁军谢香林
Owner KUNSHAN THETA MICRO