A device and method for calibrating laser focus
A focus and laser technology, which is applied in the field of rapid calibration of laser focus devices, can solve the problem of low identification accuracy and achieve high precision, simple and compact structure, and fast speed
Active Publication Date: 2021-01-08
HANS LASER TECH IND GRP CO LTD
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Problems solved by technology
Since the spot sizes near the focal point are very close and are all circular or elliptical, the discrimination accuracy of this method is not high
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[0030] The present invention is a calibration laser focus device, such as Figure 1 to Figure 3 As shown, it includes a laser processing head 1, a light-shielding ball 2 arranged in the laser processing head 1, a handle 3 passing through the laser processing head 1 and connected to the light-shielding ball 2, and a button 4 connecting the handle 3 and the laser processing head 1 , a spring 5 connected between the button 4 and the handle 3 , and a handle cover 6 fixed on the handle 3 .
[0031] Wherein, the laser processing head 1 is provided with a collimating optical lens (not shown in the figure), and the light-shielding ball 2 is arranged between the collimating optical lens (not shown in the figure) and the laser emission point (not shown in the figure).
[0032] Such as Figure 4 and Figure 5 As shown, the light-shielding ball 2 is provided with a slit 21, a through hole 23 that is arranged on the light-shielding ball and is 90 degrees to the slit 21, is arranged on on...
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The invention provides a laser focus calibration device and a method thereof. The device comprises a laser processing head, a collimating optical lens and a shading ball arranged in the laser processing head; the shading ball is located between the collimating optical lens and a laser emitting point, and the shading ball is provided with a slit penetrating through the shading ball and a through hole which is formed in the shading ball, and an included angle between the slit and the through hole is 90 degrees. According to the laser focus calibration device and the method thereof, one shading ball is arranged between the collimating optical lens and the laser emitting point of the laser processing head, one slit is formed in the shading ball, the laser can only pass through from the slit and finally focus on a workpiece, a laser beam carries out dotting on a stainless steel plate at a certain distance in the vicinity of the focus from low to high or from high to low, only when the focusposition on the steel plate is the smallest round point, the farther away from the focus, the longer a light spot is, and the identification degree is high; and after the position of the focus is found, the shading ball is rotated by 90 degrees to enable the through hole in the shading ball to be coaxial with the laser beam, and normal laser processing operation can be carried out.
Description
technical field [0001] The invention relates to the technical field of laser processing, in particular to a fast calibration laser focus device and a method thereof. Background technique [0002] Laser processing technology has the advantages of high processing precision and small heat-affected zone. When using laser technology for processing, in some cases, it is necessary to use a high-energy-density laser focus for processing, and in some cases, it is necessary to process at a certain distance from the focus, which requires quickly and accurately finding the position of the laser focus. The traditional methods mainly include dot method and inclined plate method. The former is to make dots on the stainless steel plate at a certain interval from low to high or from high to low near the focus, and determine the position of the focus according to the size of the dots and the intensity of burning; the latter The latter is to irradiate the steel plate obliquely with the vertic...
Claims
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IPC IPC(8): B23K26/035
CPCB23K26/035
Inventor 邬全兵谢泽楷王庆元曹锋王瑾高云峰
Owner HANS LASER TECH IND GRP CO LTD