Координатно-измерительные машины HEXAGON LEITZ PMM-C LINE - страница 8

SOLID AS A ROCK Every detail of the Leitz PMM-C series shows the emphasis placed on measurement certainty. The characteristic feature of the series is the Closed Frame design, which is comprised of a solid granite base, a fixed portal with cast iron pedestals and a granite crossbeam. Features Benefits Solid design: granite base, fixed portal of cast iron with a Compared to aluminium, granite shows hardly any move- granite crossbeam ment with temperature fluctuations. It ensures long-term stability, high stiffness of the measurement axes and consistent accuracy over the entire measurement volume. Travelling measuring table on pre-loaded air bearings The spindle drive ensures constant dimensional relation- with centrally positioned spindle drive ships and efficient movement sequences with no tilting or twisting. Decoupled X and Y axes Deviations in the guidance of one axis has no effect on the other axis. For quick correction and restart. Servo-drives with recirculating ball screws These accelerate rapidly while retaining positional accuracy, reaching top speeds even over short movement paths. Supporting and guiding air bearings with the largest The table is guided on a unique Leitz dovetail guideway, possible bearing base friction- and wear-free. The air bearings are mainte- nance-free. Precision steel scale bars The scale bars have the same expansion coefficients as most measured parts. Errors of measurement due to changes in temperature or faulty operation are also minimized. High-resolution scale bars: up to 0.004 µm for the Leitz For the highest reproducibility of measurement results. Infinity, all other models having 0.02 µm resolution Integrated temperature sensors Automatic compensation for temperature-conditional residual errors of the scale bars. State-of-the-art electronic control Controls complex movement sequences and evaluates the measurement data. Remote diagnosis over the Internet Servicing downtime kept short. Full safety and collision protection system for the Leitz In the event of a detected collision, the measuring se- PMM-C, Ultra and Infinity: probe head, probe styli and quence stops and a crash is avoided. This minimizes quill are protected by sensors repair costs and maximises operating times. 8 | LEITZ PMM-C LINE – Coordinate Measuring Machines