A detection method for the coaxiality of the optical path of the laser output head

Abstract

The invention discloses a coaxial detection method of the optical path of a laser output head, which comprises the following steps: obtaining a laser output head to be detected, which includes a servo motor, a lens barrel assembly driven by the servo motor to move, fixedly arranged on the optical The nozzle seat on the road; respectively control the servo motor to drive the lens barrel assembly to move to the origin position, upper limit position and lower limit position, and install a customized nozzle on the nozzle seat in the corresponding position state, and then install the custom nozzle on the customized nozzle Paste a tape on the outermost surface; start the laser to emit light at a single point, and form three marking points and the circular outline of three custom nozzles on the three tapes; then judge whether the beam is based on the positions of the three marking points on the tape concentric. The invention can accurately, quickly and conveniently detect whether the optical path of the laser output head is coaxial.

Description

【Technical field】 [0001] The invention belongs to the technical field of beam coaxiality detection, in particular to a detection method for the optical path coaxiality of a laser output head. 【Background technique】 [0002] After the laser processing equipment is assembled, the optical path needs to be adjusted. The principle of adjustment is that the center of the mechanical circle and the center of the optical path are the same center. To achieve such an ideal state, we must have certain testing methods or testing aids. If the deviation between the mechanical axis and the laser beam axis is too large, the energy of the laser beam will be unevenly distributed along the axis, which will affect the cutting quality of the laser. At the same time, if the beam is not on the same axis or has a large deviation, it will affect the heating of the laser nozzle. [0003] The traditional beam coaxial detection is to judge whether the beam is coaxial by dotting at a fixed distance. In...

AI Technical Summary

Problems solved by technology

If the deviation between the mechanical axis and the laser beam axis is too large, the energy of the laser beam will be distributed unevenly along the axis, which will affect the cutting quality of the laser.

At the same time, the beam is not on the axis or the deviation is large, which will affect the heating of the laser nozzle

[0003] The traditional beam coaxial detection is to judge whether the beam is coaxial by dotting at a fixed distance. In this way, it is difficult to ensure that the beam can still be coaxial during the moving process; secondly, the requirements for assembly are also greatly improved. Increase the difficulty of homework

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