<1>, the standard square print trapezoidal or rhombic;
<2>, square border occurs pillow or barrel deformation.
D / A card shows several major problems
<1>, the fourth foot does not have sound and light to open the signal (+5V), resulting in sound and light sources can not be opened;
<2>, the analog signal output can not accurately reflect the design of the contents of the phenomenon of garbled code;
<3>, the AD work does not normal, the phenomenon manifested in the print line for the dotted line.
The laser print line into a dotted line
<1>, whether the signal line is connected, there is no soldering;
<2>, the vibration lens driver board to the motor connecting line is not a problem;
<3>, the D/A card inserted into the PCI slot when the position is correct;
< ;4>, Whether the AD is working properly.
The galvanometer scanning head print distortion solution
<1>, produce pillow or barrel distortion is an inherent phenomenon of galvanometer marking, it is determined by the galvanometer scanning method. The solution is the distortion of the signal correction;
<2>, there are two methods of correction, one is the hardware calibration, currently used less. The other is software calibration, which is one of the ones we use more at present;
<3>, the method of hardware calibration is to pass the analog signal output from D/A card through a calibration card to change its voltage value according to a certain law, and then send the signal to the vibration lens;
<4>, the method of software calibration is that the marking software itself is equipped with a correction function, during the process of marking, the marking software can be used to calibrate the signal. In the marking process, the digital signal will be processed according to a certain method first, and then the signal will be transmitted to the D/A card.
Problems in the optical path
<1>, due to long time running, krypton lamp aging, resulting in a decrease in laser output power;
<2>, due to a long time running, the media diaphragm appeared to varying degrees of fouling, resulting in the total reflection mirror leakage or output power drop;
<3>, Due to human factors, the customer side, without understanding the specific situation, adjust the position of the resonant cavity or the position of the dielectric diaphragm, resulting in a decrease in the laser output power or laser divergence angle becomes larger, resulting in a large change in the output laser position.
Circuit problems
<1>, due to a long time running, the krypton lamp wiring terminal loosening, resulting in krypton lamp light does not ignite or fire phenomenon;
<2>, due to a long period of time, the air-conditioning phenomenon of cooling, first of all, should be identified in the connecting parts are tight, and secondly, you should check the temperature controller of the upper and lower temperature limit Setting is reasonable. Temperature controller should be set according to the lower limit of the ambient temperature ± 4 ℃ or so take the value. If there is Freon leakage, the connecting parts should be strengthened and professional personnel should be asked to add Freon.
Problems to be noted when the software call PLT file
<1>, dwg file into a plt file, pay attention to the printer settings;
<2>, call the size of the graphics to be adjusted from the new;
<3>, zoom in, zoom out to use a fixed ratio to avoid distortion of the design graphics. Design graphics to produce distortion
Beam expander mirror adjustment
<1>, the adjustment of the beam expander mirror requirements: incident light in the beam expander mirror into the center of the hole, out of the light in the center of the hole;
<2>, the adjustment of the beam expander mirror good or bad on the laser marking effect has a great impact. Mainly manifested in:
(1), the laser power drop;
(2), marking amplitude within the laser intensity is not uniform;
(3), the computer software design center deviates from the vibration lens out of the physical center of the light;
(4), can not be played to expand the beam effect.
Laser output spot flicker phenomenon:
<1>, resonance cavity adjustment is accurate;
<2>, diaphragm frame is fixed firmly;
<3>, the spotlight cavity fixed whether there is a problem;
<4>, the YAG crystal is fixed whether it is loose or tight. moderate.
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