The Ultimate Solution to Uneven Depth in Carving: Optical Path Adjustment

In addition, the manual provides detailed instructions on how to adjust the laser beam to solve the common problem of uneven depth in laser engravings. It covers equipment inspection, calibration steps, and optimization techniques to help users quickly master the core methods of laser beam calibration and to improve engraving precision and efficiency.Key words: Laser engraving depth adjustment, light path calibration, engraving precision optimization.

Why are your carvings always uneven in depth?

When many people first start using lasers, they are often frustrated by the difficulty of achieving the desired depth.The parameters were all set correctly and the materials were fixed, but the finished product was like a zebra's stripes, light and dark.In fact, the key to the problem is often hidden in the light path-from the laser tube to the lens to the focusing mirror.Today we're going to put the theory aside and walk you through the whole process of adjusting the optical path.

Preparations before tuning.

Check equipment status.

Don't jump in and start adjusting the light path just yet. Many of these little problems actually stem from poor maintenance.For example, whether the lenses have become dusty, the laser tube has aged, or the worktable is level.Once we had a customer who spent two days trying to get the optical path to work, but to no avail. Finally we discovered that there was a tiny glob of glue, about the size of a sesame seed, on the focusing lens. After cleaning it off, the system immediately returned to normal.

Prepare a tool kit for debugging.

The following are recommended: heat-resistant tape (for attaching test patterns), a crosshairs target, and a strong flashlight.The flashlight is especially important, as it can help you locate the point where the light has deviated from the optical path, which is much more reliable than simply using your eyes.

Four steps to align the optical path.

Step 1: Adjust the angle of light emitted from the laser tube.

Wearing protective glasses, he fires the laser at the smallest power setting.The key is to observe whether the light spot falls on the center of the first mirror.If the deviation is more than two millimeters, the screws will need to be loosened for fine-tuning.Remember the mantra: First adjust the left and right, then the top and bottom. Stop and check after turning the screw half a turn.

Step 2: Aligning the three lenses.

From the first to the third mirror, each component must guarantee that the light beam goes where it's pointed.To save time, a piece of white paper can be placed in front of the last mirror, and the beam adjusted to always hit the center of a cross drawn on the paper.

Step 3: Focus test.

Don't rely on autofocus! Use the manual focus to raise and lower the stage and observe the changes in the delicacy of the carvings.The best focal point is where the lines suddenly become thinner.Try using different materials, and keep a record of the corresponding heights.

Step 4: Dynamic carving validation.

A 20-centimeter square grid pattern is etched, and the focus is on the corners and edges.If the color at a particular position becomes lighter, this may be because light has been deflected as it has traveled, and it may be necessary to go back and check whether the support for the mirror has become loose.

Daily maintenance and troubleshooting.

These are the three things I must do every week.

1. Clean lenses with alcohol (use a cotton swab, moving from center to outside).

Check that the air hose is not leaking (leaks can cause the lens to overheat).

3. Lubricate the tracks (don't use ordinary motor oil, it will attract dust).

What about sudden situations?

If you suddenly find that the depth of the entire engraved area has decreased, don't panic! The most likely cause is that the focus lens has loosened. Tighten the fixing ring with a hex wrench.If this still doesn't work, check the laser tube power supply voltage, because sometimes aging power sources can cause unstable power.

Following this approach, you will find that the problem of depth is not so frightening after all.The key is to get into the habit of regular maintenance, and don't wait until the car is already broken down before you think about fixing it.In the end, it is a stable light beam that is the key to the precision of the carving.