The motion control experts at Aerotech present the AGV5D, an innovative 5-axis laser precession scanner specially developed for laser micromachining. The combination of scanner and 5-axis laser motion system makes it possible to create high-precision bores, contoured slots and other complex geometries with dimensional tolerances in the sub-micrometre range.
“With its advanced design and versatile programming options, the AGV5D system sets new standards in laser micromachining and offers an ideal solution for industries that require flexibility and long-term precision,” says Simon Smith, European Director at Aerotech. “The special design significantly minimizes thermal drift during the machining process – a crucial aspect for long-term accuracy.”
Innovative control approach for complex boron and milling processes By combining precise linear motion axes and advanced control technology, the AGV5D offers complete control over the entire micromachining process, including laser, scan head and workpiece positioning. This G-code based approach enables the integration of standard CAM software, significantly expanding the range of applications. The AGV5D works in a similar way to a 5-axis CNC machining center, but uses the advantages of laser processing to ensure maximum precision and flexibility. By utilizing a single control system, smooth coordination between the movements of the laser beam and workpiece positioning is achieved, ensuring a consistently high quality of machined parts and a simplified programming.
How the 5-axis laser movement system works The AGV5D uses RS-274 compliant G-code commands to steer the laser beam along 2D and 3D paths such as lines and arcs. The beam is directed through a nozzle at the lowest point of the scan head so that the working volume in which the laser processing takes place is below this nozzle. The paths programmed for the X, Y, Z, A and C axes move the focussed point within this working volume. In addition to beam guidance in five degrees of freedom (DOF), the system also controls external X, Y and Z axes that position the workpiece under the scan head to extend the field of view and synchronize the movements with the beam path. Aerotech’s Automation1 software-based machine control (iSMC) monitors the entire system and coordinates the G-code trajectories with the powerful Aeroscript programming commands. Simon Smith points out: “Automation1 is much more than a programming tool – it is a comprehensive automation platform with advanced data visualization and process optimization functions that are standard in modern motion control systems for servo tables.” The ability to optimize parameters and simulate movements in both the virtual controller and the real hardware provides users with precise insights into the executed movement sequences and the control of the laser pulses.
Optimized design for high throughput without compromise To ensure optimum thermal stability, the AGV5D contains no electronics in the scan head, which minimizes heat transfer and thermal drift. The actively water-cooled motors provide additional stability during longer machining operations. The scan head operates with sealing air to minimize dust ingress, while the scan mirrors and optics are cooled by direct gas purging. These measures improve the repeatability and reproducibility of the machining results, which leads to a consistently high quality of the manufactured parts.
Pioneering in many industries Five-axis laser precession scanners play a crucial role in laser micromachining, as they enable the production of vertical sidewalls for high aspect ratio tasks, among other things. This capability is essential for precision applications that require complex geometries and tight tolerances. Simon Smith emphasizes: “With our technology, industries that demand exceptional accuracy and detail can make significant progress.” According to Aerotech, applications range from the production of medical devices such as cardiovascular implants to microelectronics processing and the manufacture of precision parts for the automotive industry.
A video shows how 5-axis laser micromachining works at:
https://www.youtube.com/watch?v=YAKzgwLcOoo
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Aerotech at SPS 2024 in Nuremberg, Hall 3, Stand 251 (November 12 to 14,
2024)
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(all pictures: source Aerotech)
