How does the thermal expansion of Manhart (Guangdong) CNC Machine Tool Co., Ltd.’s laser cutting machine affect accuracy?

The thermal expansion of laser cutting machines is an important factor affecting their cutting accuracy. During the laser cutting process, the cutting head, workpiece, and machine tool components are all affected by heat and undergo thermal expansion. This thermal expansion may cause changes in the relative positions between components, thereby affecting the positioning accuracy and cutting quality of the laser beam.
Specifically, thermal expansion may cause the following effects:
1. Decreased positioning accuracy of the cutting head: The positioning accuracy of the cutting head is crucial for the accuracy of laser cutting. However, during the cutting process, the cutting head may experience thermal expansion due to the influence of heat, resulting in a change in its position. This position change may cause the laser beam to be unable to accurately focus on the workpiece, thereby affecting cutting accuracy and quality.
2. Workpiece deformation: Workpieces can also experience thermal expansion due to the influence of heat during laser cutting. For thinner workpieces, this thermal expansion may cause deformation of the workpiece, thereby affecting cutting accuracy. In addition, the thermal expansion of the workpiece may also lead to loose fit between it and the fixture, further affecting cutting accuracy.
3. Decreased machine tool accuracy: The machine tool of the laser cutting machine is one of the key components to ensure cutting accuracy. However, during long-term operation, machine tools may experience thermal deformation due to the influence of heat, leading to a decrease in their accuracy. This decrease in accuracy may affect the positioning accuracy of the laser beam, thereby affecting the cutting quality.
To reduce the impact of thermal expansion on laser cutting accuracy, the following measures can be taken:
1. Optimize cutting parameters: Select appropriate cutting parameters, such as laser power, cutting speed, and gas pressure, to reduce the impact of heat on the workpiece and cutting head.
2. Control environmental temperature: Maintain a stable temperature around the laser cutting machine to reduce the impact of thermal expansion.
3. Use high-precision fixtures: Use high-precision fixtures to fix the workpiece to reduce deformation during the cutting process.
4. Regular maintenance and inspection: Regularly maintain and inspect the laser cutting machine to ensure it is in good working condition. This includes cleaning equipment, checking the wear and tear of components, etc.
In summary, the thermal expansion of laser cutting machines is an important factor affecting their cutting accuracy. To reduce this impact, a series of measures need to be taken to control the impact of heat on the equipment and maintain its good working condition.