Introduction
During long-term operation, many components of a large laser cutting machine will inevitably experience wear and tear, especially commonly used accessories. If these parts are not replaced in time, it may affect normal machine operation, delay production schedules, and even cause damage to the equipment itself.
To ensure stable and continuous production, factories and enterprises usually prepare sufficient stocks of common accessories in advance. This article introduces several high-frequency accessories used in a large laser cutting machine, helping users better manage equipment maintenance and reduce downtime risks.
Commonly Used Accessories of Large Laser Cutting Machine
Beam Expander Lens
A beam expander is an optical lens assembly used to adjust the laser beam diameter and divergence angle.
For a large laser cutting machine, the beam expander plays a critical role:
It converts the laser beam into a collimated (parallel) beam, allowing the focusing lens to generate a smaller, high-power-density focal spot.
In laser measurement applications, it improves beam collimation to achieve accurate long-distance results.
It adjusts beam diameter for compatibility with different optical systems.
When used with spatial filters, it improves beam symmetry and ensures more uniform energy distribution.
Protective Lens
The protective lens is an essential accessory in a large laser cutting machine.
Its main functions include:
Blocking metal spatter and debris during cutting operations.
Preventing damage to internal optical lenses and protecting operators.
Reducing laser reflection through high-damage-threshold anti-reflective coatings on both sides.
Under normal operating conditions, protective lenses are typically replaced every three months, or earlier depending on the working environment.
Reflective Mirror
In a large laser cutting machine system, there are usually one or two transmissive optical components, such as the output coupler of the laser resonator and the final focusing lens.
In addition, reflective mirrors are widely used:
As rear mirrors and folding mirrors inside the laser cavity.
To guide and redirect the laser beam within the beam delivery system.
To ensure stable beam transmission and precise cutting paths.
Some laser systems may require five or more reflective mirrors depending on machine configuration.
Copper Nozzle
The copper nozzle is a key consumable component in a large laser cutting machine.
Its functions include:
Assisting high-speed gas flow to remove molten material.
Preventing molten slag and debris from rebounding upward, thus protecting the focusing lens.
Controlling the gas diffusion area, which directly affects cutting quality.
The nozzle aperture size varies according to the thickness and type of cutting material. The typical replacement cycle is around two months, depending on usage intensity.
Importance of High-Quality Accessories for Large Laser Cutting Machine
The performance and reliability of a large laser cutting machine are closely related to the quality of its accessories. Choosing professional and reputable laser accessory manufacturers ensures:
High integration accuracy.
Stable optical performance.
Improved processing efficiency.
Longer service life of the entire laser system.
About Eagie Laser
Eagie Laser is a high-tech enterprise specializing in the R&D, manufacturing, and sales of large laser cutting machine and laser welding equipment. The company provides cost-effective products and comprehensive one-stop services, including pre-sales consultation, technical support during installation, and reliable after-sales service—fully safeguarding customer interests worldwide.