Controlled distance indicating method, marking method and controlled distance indicating device for 3D laser marking machine and 3D laser marking machine

Abstract

The invention discloses a controlled distance indicating method, a marking method and a controlled distance indicating device by using the marking method for a 3D laser marking machine and the 3D laser marking machine, wherein the controlled distance indicating device comprises a visible light indicator, a light splitting unit which is driven by a high-speed motor and a control unit; the light splitting unit performs high-speed reciprocating movement between a first position and a second position; a visible light beam is reflected by the light splitting unit at the first position to form a reference light beam and is reflected by the light splitting unit at the second position to form a deflected light beam; the reference light beam and the deflected light beam are two bundles of light when seen by naked eyes; the control unit can calculate the difference value of the first position and the second position, so that the intersection point of the deflected light beam and the reference light beam which is reflected by a reflector element corresponds to an initial focus of the 3D laser marking machine. According to the controlled distance indicating method, the marking method and the controlled distance indicating device by using the marking method for the 3D laser marking machine and the 3D laser marking machine, provided by the invention, the initial focal length for laser marking can be shown by controlling the intersection of visible light beams, the controlled distance indicating device can automatically focus and can further accurately and quickly complete the indication work for the initial focus length.

Description

technical field [0001] The invention relates to the field of laser marking, in particular to a controllable distance indication method for laser marking a three-dimensional surface of an object, a marking method, a controllable distance indication device applying the method, and a 3D laser marking machine. Background technique [0002] Laser marking machine (laser marking machine) is a technology that uses laser beams to permanently mark the surface of a material. This technology generates a laser beam through a laser, undergoes a series of optical transmission and processing, and finally focuses the beam through an optical lens, and then deflects the focused high-energy beam to a designated position on the surface of the object to be processed. Laser marking machines can mark various characters, symbols and patterns, and have broad market application prospects. [0003] Traditional laser marking machines only mark on two-dimensional planes. During marking, since the laser...

AI Technical Summary

Problems solved by technology

However, without a positioning structure, it is difficult for technicians to accurately place and adjust the position and height of the marking object, and 3D surface marking requires very high precision. As long as there is a deviation in the position or height of the marking object, it is likely to cause the entire Distortion of marking pattern

In addition, due to the complexity of the surface of the 3D marking object, the requirements for setting the reference point are flexible and variable, so the traditional fixed focus system has been unable to meet the requirements of 3D laser marking

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