An optical fiber head assembly with an adjustable collimation focal length

Abstract

The invention discloses an optical fiber head assembly with an adjustable collimation focal length mechanism, which comprises an optical fiber head and a collimation focusing assembly. Locking and positioning mechanism for fast positioning and locking / disassembly, the optical fiber head is inserted vertically into the locking and positioning mechanism and quickly positioned and locked by it, the optical channel for the optical fiber head to emit light is set in the fixed locking cylinder and the locking and positioning mechanism; fixed and locked A collimating and focusing knob is also provided at the insertion end of the matching optical fiber head of the barrel, which is screwed to the fixed locking barrel and the upper end surface of the collimating and focusing knob also resists the contact locking positioning mechanism, and the collimating and focusing knob drives The locking positioning mechanism and the optical fiber head move axially, so that the collimating and focusing components are placed on the matching collimating focus; Parallel light. The focal length of the optical fiber head of the optical fiber head assembly relative to the collimation and focus adjustment assembly of the present invention can be adjusted, and the insertion and locking of the optical fiber head is fast.

Description

technical field [0001] The invention relates to the technical field of laser cutting, in particular to an optical fiber head assembly with an adjustable collimation focal length mechanism. Background technique [0002] In recent years, the domestic demand for laser cutting machine tools has increased rapidly. Fiber laser cutting machine tools have many advantages such as easy maintenance, low consumption cost, and excellent cutting section, so the growth in demand is particularly prominent. As an important component of the fiber laser cutting machine, the fiber laser cutting head directly affects the cutting quality of the fiber laser cutting machine. [0003] The optical fiber cutting heads currently on the market do not have an adjustable collimation focal length. Although the size of the focal length of the collimating lens can be calculated very accurately when designing the fiber cutting head, and then the collimating focus assembly is cured, so that the output light o...

AI Technical Summary

Problems solved by technology

In actual use, if the light spots output from the optical fiber head and the collimated lens are not parallel, the cross-section quality will not be greatly affected when cutting thin plates, but when cutting thick plates, if the collimated light spots are not parallel, it will affect the cutting The impact on the surface quality of the fiber laser cutting machine is very obvious, that is, if the collimated light spots are not parallel, the quality of the products cut by the fiber laser cutting machine will be low, the yield rate will be low, and the waste of resources will be great.

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