Laser Marking: A Step-by-Step Guide to Keeping Your Marking System Accurate

The company provides a detailed tutorial on how to calibrate the laser spectrometer, covering calibration steps, fine-tuning of marking precision, and daily maintenance of the equipment.The company has also developed a practical guide to help users solve problems such as laser misalignment and uneven energy distribution, ensuring that their laser equipment runs smoothly for a long time and improving their processing efficiency.

Preparing for calibration.

Before we calibrate the laser spectrometer, we have to make sure the equipment is in a safe state.Don't get too eager to start right away. First, make the following preparations.

Check the condition of the equipment.

Turn off the machine and disconnect the power source to prevent the machine from accidentally starting up during the cleaning process.Look at the exterior of the device to see if there are any obvious signs of damage, particularly around the diffraction grating and the mirror. If there are any oil stains or scratches, this may affect the accuracy of the calibration.

Clean the optical lenses.

Dip a lint-free cloth in alcohol and wipe the surface of the spectrometer and the lens.Be careful not to use too much force; the lenses are very delicate and scratches can be very costly.

Prepare the calibration tools.

Prepare a cross-head screwdriver, energy test paper and calibration target in advance.Place your tools in a convenient location, to avoid having to rummage around for things in the middle of the operation.

Calibration of the spectrometer.

After everything is ready, follow the steps below one by one.

Adjust the prism.

Using a screwdriver, he carefully adjusts the screws that hold the prism in place, turning each one only a quarter-turn at a time. Then he starts the machine up to see where the light spot appears.If the spot is off-center, it is minutely adjusted in the opposite direction until it hits the target dead center.

Testing energy uniformity.

The tester marks a series of lines on a piece of paper with the same settings and observes whether the lines are all the same depth.If one color is noticeably lighter, this indicates that the light is not being dispersed evenly, and the angle or cleanliness of the lens should be reexamined.

Lock on to the calibration parameters.

After adjusting, mark the adjustment screw with a marker, then tighten the lock nut.The last step is to save the parameters of the equipment, so that they can be used again when the machine is next turned on, saving the labor of having to repeat the process.

Tips for daily maintenance.

Calibration is not a one-time event. Regular maintenance is also very important.

Regularly check the light path.

Every week, before the machine is turned on, it is necessary to spend two minutes to check the optical path for misalignment, especially after moving the equipment.It's better to find and solve problems early on than to produce defective products.

Control the humidity of the environment.

Laser equipment is sensitive to humidity, so the workshop is kept at 40-60 %.Too much humidity makes the lenses fog up, and too much dryness makes the lenses attract dust.

Record maintenance logs.

Each time I calibrate, I write down the date and the calibration parameters in a notebook.With time, they can get a feel for the changes in the equipment's performance and carry out preventative maintenance.

Common questions.

If you encounter these problems, there's no need to panic. Try these methods first:

Some of the marks are deep, some shallow.

In 90 % of cases, the problem is that the angle of the prism is slightly off; the problem can be solved by re-calibrating the lens.If it still doesn't work, it's possible the laser tube has aged and needs to be checked by the manufacturer.

The edges are blurred.

First check if the lens is properly focused, then make sure it isn't installed backwards.Some beginners get the two sides of the prism mixed up, leading to confusion.

By following this method, your laser equipment's precision can be maintained for at least six months without any decline.Of course, if you're really hopeless, there's nothing to be ashamed of about hiring a professional. After all, safety first!