How to use a laser cutting machine to process precision parts?

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In the manufacturing industry, precision part processing requires extremely high accuracy, and laser cutting machines, with their unique advantages, have become a powerful tool. So, how can you use laser cutting machines to achieve this? Here are the key techniques.

Equipment Selection
To achieve precision part processing, you need to select equipment based on the part material and precision requirements. For example, processing thin metal sheets and thick steel plates requires different laser power and spot quality. For processing precision parts such as electronic components, you should choose equipment with a small spot size and high positioning accuracy. For example, a UV picosecond laser cutting machine offers short pulses, micron-level accuracy, and kerfs as narrow as 10μm, making it suitable for ultra-precision processing.

Adjusting Parameters
Power and Speed Balance: Power determines the degree of material melting and vaporization, while speed affects the energy received per unit area. Adjustments must be made to the material during processing. For example, when cutting thin aluminum plates, too high power can cause ablation, while too high speeds prevent through-cutting. When cutting thick carbon steel, too low power can lead to a continuous cut. Finding the right combination ensures both cut quality and precision. Gas assist has a

significant impact: Assist gas removes slag, which can affect cutting quality. Oxygen assists combustion and increases cutting speed when cutting carbon steel, but it can cause oxidation at the cut edge. Nitrogen is used for stainless steel and other materials to prevent oxidation and achieve high-quality cuts. Gas pressure also needs to be adjusted appropriately. High pressure improves slag removal but may also deflect the laser beam.

Focus and Optical Path
Precise Focus: The focal position significantly impacts cutting accuracy. When cutting materials of varying thicknesses, the focus position must be adjusted. For thick materials, the focus is located within the material, while for thin materials, the focus is close to the surface. This can be achieved using the machine’s automatic focusing system or manual fine-tuning.

Optical Path Maintenance: Regularly clean optical components, such as reflectors and focusing lenses, to prevent dust and impurities from affecting beam transmission and focusing, ensuring a stable and precise laser beam.

Secure Fixture and Positioning
Stable Fixture: Insecure part fixturing during processing can cause part movement, resulting in cutting deviation. Use high-precision fixtures or vacuum devices to minimize vibration and displacement.

Precise Positioning: Advanced laser cutting machines feature a vision positioning system that automatically identifies part position and orientation, compensates for positioning errors, and ensures precise cutting accuracy.

Programming and Simulation
Precision Programming: When programming the cutting path, consider the part’s shape, size, and cutting sequence. For complex shapes, use curve interpolation to create a smoother cutting path, reduce jerks at corners, and ensure precision.

Simulation Optimization: Before cutting, use software simulation to check the path and parameter settings, identify and optimize any issues beforehand, and avoid material waste and processing errors. Mastering these techniques will fully leverage the advantages of laser cutting machines, achieving high-precision machining of precision parts and meeting the increasingly stringent demands of the manufacturing industry.

As a professional laser equipment manufacturer, MenLuck offers comprehensive system solutions and dedicated after-sales service tailored to your product needs. Interested companies are welcome to contact us and we will provide you with the most professional and comprehensive solutions! Email: info@menlaser.com