A precision laser cutting head follower device and its control method

Abstract

The present invention relates to the technical field of laser processing, and discloses a precise laser cutting head follow-up device and a control method thereof. The follow-up device comprises a laser cutting head, a Z-axis adjusting mechanism controlling the laser cutting head to move up and down, a transmitter arranged at one side of the laser cutting head and used for sending a detection laser beam onto the surface of a to-be-cut part, a receiver arranged at the other side of the laser cutting head and used for receiving a reflecting laser beam generated by the detection laser beam on the surface of the to-be-cut part, and a central controller connected with the transmitter, the receiver and the Z-axis adjusting mechanism and used for controlling the Z-axis adjusting mechanism to drive the laser cutting head to move up and down according to the energy and a focus position of the reflecting laser beam received by the receiver. According to the device and the method, the central controller controls the Z-axis adjusting mechanism to drive the laser cutting head to move up and down according to the energy and the focus position of the reflecting laser beam received by the receiver, thus to enter into an ideal focusing plane of the laser beam. The method is suitable for cutting of any materials.

Description

technical field [0001] The invention relates to the technical field of laser processing, and more specifically, to a precision laser cutting head follower and a control method thereof. Background technique [0002] Due to its advantages of high brightness, high directivity, high monochromaticity and high coherence, laser has been widely used in scientific research, national defense, industry and other important aspects of national production. In the industrial field, laser processing, as an advanced manufacturing technology, has the advantages of high efficiency, high precision, high quality, wide range, energy saving and environmental protection, and can realize flexible processing and ultra-fine processing. It is used in automobiles, electronic circuits, electrical appliances, aerospace, iron and steel metallurgy , machinery manufacturing and other fields have been widely used, and have reached a higher level in some industries (such as automobiles, electronics industries,...

AI Technical Summary

Problems solved by technology

However, the method of using a capacitance height controller is only feasible when cutting metal materials, because only when the material 7 to be cut is a metal material, a capacitance will be formed between the material 7 to be cut and the nozzle, and the capacitance height controller can be used to measure it. Capacitance, when the material to be cut is non-metallic, there may be no capacitance between it and the nozzle, or the capacitance is very small and difficult to detect, so this method cannot be used

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