Method and system for checking perpendicularity between laser nozzle and machining surface

Abstract

The invention discloses a method for checking the perpendicularity between a laser nozzle and a machining surface. The method comprises the steps of: arranging three distance measuring sensors at the same position of the laser nozzle and making the distance measuring direction of a first distance measuring sensor be parallel to the axial direction of the laser nozzle, and making a second distance measuring sensor and a third distance measuring sensor form in an included angle alpha with the axial direction of the laser nozzle; measuring a distance a from the first distance measuring sensor to the machining surface, a distance b from the second distance measuring sensor to the machining surface, and a distance c from the third distance measuring sensor to the machining surface; and calculating the ratios of a and b and a and c, judging whether the two ratios are both equal to cosine alpha, if yes, judging that the laser nozzle is perpendicular to the machining surface, and if not, judging that the laser nozzle is not perpendicular to the machining surface. According to the method, three distance measuring sensors are adopted such that the observation by naked eye and the contact type ruler measurement method in the prior art are replaced, and the relation between the laser nozzle and the machining surface can be rapidly and accurately recognized. The invention also discloses a system for checking the perpendicularity between the laser nozzle and the machining surface, and the system has the beneficial effects as recited above.

Description

technical field [0001] The invention relates to the technical field of laser cutting, in particular to a method for checking the perpendicularity between a laser nozzle and a processing surface. The invention also relates to a checking system for the perpendicularity between the laser nozzle and the processing surface. Background technique [0002] With the development of China's machinery industry, the production, manufacture and processing of machinery and equipment have higher standard process requirements. [0003] Laser cutting is an efficient and high-level metal sheet cutting process. The laser cutting machine uses a high-power-density laser beam to irradiate the material to be cut, so that the material is quickly heated to the vaporization temperature, evaporates to form holes, and moves with the beam to the material. , the holes continuously form a narrow slit (such as 0.1mm) to complete the cutting of the material. Due to the small laser spot, high energy density...

AI Technical Summary

Problems solved by technology

However, the traditional verticality calibration method has low efficiency and large errors, which not only delays the production and manufacturing process, but also often fails to meet the high cutting process standard requirements

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