Optical fiber head assembly with collimating focal length adjusting mechanism

Abstract

The invention discloses an optical fiber head assembly with a collimating focal length adjusting mechanism. The optical fiber head assembly comprises an optical fiber head and a collimating focusing assembly. A fixed locking cylinder is arranged at the upper end of the collimating focusing assembly, a locking positioning mechanism used for rapidly positioning and locking / dismounting and mounting of the optical fiber head is arranged on the fixed locking cylinder, the optical fiber head is vertically inserted in the locking positioning mechanism and is rapidly positioned and locked by the mechanism, and the fixed locking cylinder and the locking positioning mechanism are internally provided with a light channel for emitting of optical fiber head light; a collimating focusing rotary knob is further arranged at the position, matched with the inserting end of the optical fiber head, of the fixed locking cylinder and is in screw joint with the fixed locking cylinder, the upper end face of the collimating focusing rotary knob is in abutting contact with the locking positioning mechanism, the collimating focusing rotary knob drives the locking positioning mechanism and the optical fiber head to axially move, the collimating focusing assembly is placed on the matched collimating focal point, and the optical fiber head emits light along the light channel, is subject to collimating through the collimating focusing assembly on the collimating focus point and then outputs parallel light. The focal length of the optical fiber head of the optical fiber head assembly is adjustable relative to the collimating focusing assembly, and the optical fiber head is inserted and locked rapidly.

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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