What Is The Reason for Cutting Errors in Fiber Laser Cutting Machines?

What is the reason for the error in cutting with a fiber laser cutting machine?

The introduction of fiber laser cutting machines has significantly increased productivity in metal processing. These machines offer high precision, small cuts, fast speeds, and minimal cutting deformities, resulting in superior finished products compared to traditional methods. As a result, laser cutting equipment now plays a significant role in the metal processing industry.

Despite the benefits of using laser cutting machines, issues may still arise during operation. For instance, even when parameters are set correctly, cutting errors can occur. In such cases, it is crucial to identify the root cause of the problem before making any adjustments or attempting to resolve it. Let's explore some common reasons for cutting errors.

1. There are geometric errors in the product itself. For example, if the processed product itself is uneven or has small particles of residue on the surface, the cutting process defaults to setting the flat plate cutting data. If the product surface is uneven, different areas may be heated unevenly during cutting, and the thin plate surface will be overheated and melted, while the thick plate surface may not be melted through. Due to the uneven surface, the laser focus changes randomly with the position of the surface of the processed object and the ideal position.

2. Error in Fiber Laser Cutting Machine Programming

When programming a fiber laser cutting machine, the processing trajectory on a complex surface is approximated using straight lines, arcs, and other shapes. However, there is a discrepancy between the fitted curve and the actual curve. These discrepancies result in errors in the relative positioning of the actual focus and the surface of the object being processed, causing deviations from the ideal programming position.

3. The actual thickness of the material exceeds the cutting range. For example, a 1500W power device can cut a carbon steel plate with a thickness of up to 12mm. Now it is forced to cut a 14mm carbon steel plate. Even if it can be cut through, there will definitely be errors or slag at the bottom. Therefore, before cutting, it is necessary to determine the thickness of the plate and the actual thickness that the equipment can cut. The quality accuracy beyond the cutting range cannot be guaranteed.

4. During the cutting process of the fiber laser cutting machine, the error of the focus position will also cause errors during cutting. Many factors will change the relative position of the focus and the surface of the product, which will also affect the accuracy of the processed product. For example, the clamping method of the fixture, the horizontal degree of the placement of the machine tool itself, the degree of wear of the bed rack, etc. Check before cutting to reduce errors.