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在工业生产中确定焦点位置的简便方法有三种
 

(1)蓝色火花法:去掉喷嘴,吹空气,将脉冲激光打在不锈钢板上,使切割头从上往下运动,直至蓝色火花最大处为焦点。


(2)打印法:使切割头从上往下运动,在塑料板上进行激光束打印,打印直径最小处为焦点。

(3)斜板法:用和垂直轴成一角度斜放的塑料板使其水平拉动,寻找激光束的最小处为焦点。

 

(1) blue spark method: remove the nozzle, blow the air, the pulse laser on the stainless steel plate, so that the cutting head from the top down, until the maximum blue sparks focus.


(2) printing method: the cutting head from the top down, the laser beam on the plastic plate printing, printing the smallest diameter of the focus.


(3) the inclined plate method: with the vertical shaft into an angle of the plastic board to make it horizontal pull, looking for the minimum point of the laser beam as the focus.

 

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