In the field of industrial manufacturing, the demand for cutting large-sized workpieces is increasing day by day, and high-power fiber laser cutting machines have become the core equipment with cutting efficiency and accuracy advantages. However, large-scale cutting faces challenges such as workpiece positioning deviation and thermal deformation control, and requires systematic adaptation techniques to improve processing quality. The following analysis will be conducted from key dimensions.
The basic adaptation of equipment is a prerequisite for large-scale cutting. Firstly, attention should be paid to the load-bearing capacity and motion accuracy of the worktable. A reinforced worktable should be selected based on the weight of the workpiece to avoid deformation of the worktable caused by long-term loading; Simultaneously calibrate the synchronization of X and Y axis movements, adjust the clearance of the transmission mechanism through laser interferometer detection, and ensure the trajectory accuracy during large stroke movements. In addition, the laser transmission system needs to be adapted to long-distance cutting requirements, using low loss optical fibers and regularly cleaning the joints to ensure stable transmission of laser energy and avoid a decrease in cutting quality due to energy attenuation.
Dynamic optimization of cutting parameters is the core technique. In large-scale cutting, parameters need to be adjusted according to the thickness of the workpiece material and the length of the cutting path. For large-sized cutting of thick plates, gradient power control strategy can be adopted. In the initial stage of cutting, the power is increased to ensure the penetration of the incision, and in the stable cutting stage, the power is moderately reduced to reduce heat input. At the same time, optimize the matching relationship between cutting speed and auxiliary gas pressure. For materials such as stainless steel, while ensuring the smoothness of the cutting surface, increase the speed reasonably to shorten the single cutting time and reduce the overall risk of thermal deformation of the workpiece.
The collaborative adaptation of auxiliary systems cannot be ignored. The design of fixtures and jigs should take into account both positioning accuracy and clamping stability, using a multi-point uniform clamping method to avoid deformation of the workpiece caused by excessive local stress; For ultra long workpieces, a synchronous support device can be configured to reduce the deformation of the suspended section. The dust removal system should adjust the position and air volume of the suction port according to the cutting range to ensure timely discharge of smoke and dust, and avoid affecting the laser focusing accuracy. In addition, the adaptation of the real-time monitoring system can effectively improve processing safety. By installing cutting head collision prevention and workpiece deformation monitoring modules, abnormal feedback can be provided in a timely manner and shutdown protection can be triggered.
In summary, the adaptation of high-power fiber laser cutting machines for large-scale cutting requires the coordinated optimization of equipment, parameters, and auxiliary systems. In practical applications, it is necessary to conduct trial cutting verification based on the specific characteristics of the workpiece. By continuously adjusting the adaptation scheme, production efficiency can be improved while ensuring cutting accuracy, providing reliable technical support for the processing of large-sized workpieces.