Common Problems Affecting the Accuracy of Laser Cutting Machine Cutting Dimensions

There are various factors that can cause deviations in cutting dimensions during laser cutting. Here are some common issues:

Mechanical Issues

Reverse clearance:
Reverse clearance refers to the motion delay caused by the clearance between gears and screws in mechanical transmission systems. This results in a deviation between the starting and ending points of the cutting.
Gear and rack meshing problem:
If the gear and rack meshing on the X or Y axis is improper, it can cause uneven movement, thereby affecting the accuracy of cutting dimensions.
Motor installation issue:
Improper motor installation (such as loose coupling or incorrect gasket installation) can result in inaccurate movement.
Guide rail issue:
Excessive errors in parallelism and perpendicularity of the guide rail can cause deviations in cutting dimensions.
Synchronization wheel issue:
Loose or damaged synchronization wheels can lead to inaccurate cutting dimensions, especially during high-speed cutting.
Sliding block issue:
Loose or damaged sliding blocks can cause jagged patterns to appear during the cutting process, affecting cutting accuracy.
Uneven worktable:
An uneven worktable can cause a change in the focus of laser cutting, thereby affecting the accuracy of cutting depth and size.

Misalignment of laser beam:
Misalignment of the laser beam can cause the cutting line to deviate from the predetermined path, thereby affecting the accuracy of cutting dimensions.
Optical component contamination:
Dust, dirt, or other contaminants on the lens or focusing lens can scatter the laser beam, reducing cutting accuracy.
Focusing lens issue:
Loose or incorrect focal length of the focusing lens can cause deviations in cutting dimensions.

Uneven material:
If the surface of the cutting material is uneven, it may cause a change in the focus of laser cutting, affecting the cutting quality and dimensional accuracy.
High reflectivity of materials:
For high reflectivity materials such as aluminum and copper, laser beams may be reflected, resulting in low cutting efficiency and affecting cutting quality and dimensional accuracy.

Improper setting of cutting parameters:
Cutting speed too fast or too slow, laser power too high or too low, inappropriate air pressure, etc., can all affect the accuracy of cutting dimensions.
Control system issues:
Control card, driver, or motor failures may result in inaccurate motion control, thereby affecting the accuracy of cutting dimensions.
Environmental factors:
Changes in environmental temperature and humidity may affect the accuracy of the machine, especially in places without air conditioning.

To ensure the accuracy of laser cutting dimensions, please make sure to:

Regularly maintain the machine, including cleaning optical components, lubricating guide rails, inspecting motors and transmission systems, etc.
Select appropriate cutting parameters based on different cutting materials and thicknesses.
Ensure that the surface of the cutting material is flat and firmly fixed on the workbench.
During the cutting process, closely observe the operating status of the machine, and promptly identify and solve problems.