3D relief knowledge points

26 May 2022

By BOGONG MACHINERY

laser relief is a kind of sculpture based on the surface of material,which uses laser beam as tool to cut or burn the material to form convex 3D graphics and texts.

In the 3D laser relief processing, there are some basic knowledge we need to know. Here I will introduce some knowledge from the3D dynamic focusing system, galva laser head to laser applications.

first, we need to know what files we can use to do 3D relief.

3D model need STL files, only this files we can do 3D relief and engrave of 3D concave convex relief.

图片 1(1).png 图片 2(1).png

second,process characteristics

3D dynamic system fiber laser machine has a wide range of applications. There are tree mainly characteristics for 3D laser engrave machine: widely applications, high efficiency and high precision.

Here I will introduce them one by one.

1. Widely applications

Almost metal we can use to do 3D relief. Such as brass,copper,silver, gold, die steel, stainless steel.The laser spot is thinner than the knife and the processing effect is finer.

Therefore, laser relief processing is widely applications in handicrafts industry,special industry, mold industry and so on.

图片 3(1).png 图片 5(1).png 图片 6(1).png 3D relief on metal.

2. High efficiency

3D dynamic axis and XY axis fully coordinated by software, and layered focus compensation is completed in microseconds with high efficiency. In the proper configuration, it’s efficiency can reach or exceed CNC machine. And we can get a very fantastic effect then CNC machine.

3. High precision

With the increase of processing layers, the dynamic axis of 3D dynamic focusing system cooperation to adjust the focal length and adjust the spot in real time , which can ensure that the focus spot is controllable by software in the whole processing , and can obtain higher accuracy than the traditional laser scan head.

图片 7(1).png 图片 8(1).png

3D relief 50times magnification effect display.

Third, how to make the effect of relief to be best.

Before laser relief engrave, the most appropriate parameters need to be tested, such as marking parameters, filling line distance,layer thickness and so on.

1. When debugging the marking fill parameters，it is necessary to make a uniform frosted shading.

图片 9(1).png

Filling parameters debugging effect as references

2. Layers parameters :Use the adjusted filling parameters to engrave 50~100 times on the material.Total depth/engraving times=the depth of a single process, that is the layered thickness of relief sample.

3. Laser on delay:when we need to do the sample what we want to test, we need to get the relief surface to be smooth, for example:

图片 10(1).png effect as references

4. Clean: dust is generated in the process of relief engraving, which needs to be cleaned every 3-5 layers of engraving, otherwise too much dust will cause the relief not to form.

图片 11.png

Finally,suggestions on laser power selection based on marking speed and effect:

laser power	efficiency	effect
20W	low efficiency	very good
50W	efficiency has improved	good ,suit for relief use
100W	high	high power not good for material form.

图片 12.png Different power to engrave effect as references.

In a word, 3D machine world is big, we can go to explore and discover more applications, also test more great parameters by ourselves.