In order to develop high efficiency and high precision cutting 3D CNC laser cutting machine, the following key technologies need to be studied.
Design and manufacturing technology of six axis mechanical system with high precision and long stroke. 3D CNC laser cutting machine has a total of 4 X/Y/Z/C linear motion axis and A/B two rotating axis. The requirements of the rotation range of the linear motion axis and the rotation range of the rotary motion axis are large, so it is difficult to design and manufacture for the complex six axis precision mechanical system. Method uses the empirical design and finite element analysis and experimental verification of the combination, make full use of the machine structure optimization design technology based on computer simulation, the key parts of the machine through the finite element analysis and integral of 3D CNC burning laser pointer cutting, by optimizing the mechanical structure, improve the dynamic characteristics of machine bed, to ensure stability in the process of high-speed cutting machine.
Long distance multi joint rotary optical path design. In order to avoid the vibration caused by laser cutting and ensure the quality of laser beam, 3D CNC laser cutting machine usually adopts the structure of laser and machine tool separated. Because 3D CNC laser cutting machine processing range is relatively large, which makes the laser light guide optical path length, the laser will appear a certain energy attenuation in long distance transmission process. In addition, 3D laser cutting machine with a large rotating range of A/B rotating axis, so that the light guide system not only need to change through the mirror position, but also need to change the angle of the mirror to achieve laser transmission. The laser reflection error amplification problem can be generated by changing the laser angle of the mirror.
Development of 3D laser processing head. 3D laser processing head is the key parts of 3D CNC high power laser pointer cutting machine, including the realization of rotational motion mechanism and C A/B axis focus auto tracking motion, auxiliary gas nozzle, laser focusing device, collision protection device, electrical interface and water vapor seal. The moving accuracy and precision of the 3D laser processing head directly affects the final machining precision of the laser, and the auxiliary gas nozzle and laser focusing device installation accuracy affects the quality of laser cutting, laser processing to prevent long time will lead to a processing head temperature affect the working characteristics of the technical problems, so 3D laser processing head the development is very difficult.
Six axis five linkage CNC system development. 3D laser cutting machine CNC system needs to have five axis linkage function. And because the laser cutting path for space curve in NC programming with a large number of small segments connected by the way of fitting, which requires in the process of high speed machining, CNC system has the function of looking, smooth transition between the speed through the line to prevent repeated lifting speed and could not reach the specified cutting speed for the cutting process, to avoid overheating. At present, 3D laser cutting machine numerical control system optional range is small, and difficult for laser cutting process of the two development.
(C) VIM CO., LTD. All Rights reserved