Nikon Metrology has combined CMM metrology with X-ray Computed Tomography (CT) to develop its Metrology CT system.MCT225 is designed to provide Metrology CT for a range of sample sizes and material densities with 9+ L/50 µm accuracy in accordance with the VDI/VDE 2630 guideline. All internal and external geometry ismeasured in a single non-destructive process. A full 3D visualization of the sample volume provides insights into part deformations, porosity and internal structural integrity. “X-ray has long been used for industrial applications,” said a company spokesperson. “With X-ray CT, a number of 2D X-ray images are taken around the sample as it rotates 360°. All of the external and internal geometry is captured as the X-rays pass through the sample. CT software reconstructs a 3D volumetric model of the sample using these 2D images. Dimensional characteristics such as size, position and form can be measured directly using the model as well as full part-to-CAD comparison, section reporting and GD&T analysis.” MCT225 is pre-calibrated using accuracy standards. According to the company, “absolute accuracy” guarantees measurement accuracy without time consuming comparative scans or reference measurements; samples are simply placed on a rotary table inside the enclosure and measured without the need for granite or touch probes inside the machine. A key component of the MCT225 system is the Nikon Metrology 225 kV micro-focus X-ray source. It is designed to produce sharp images with low noise levels, enabling magnification levels up to 150x with 2µm feature detection. Additionally, its open tube design helps provide easy maintenance. High-precision linear guideways equipped with high-resolution optical encoders are error corrected using laser interferometer mapping techniques employed for enhanced accuracy and long-term stability. Tominimize thermal effects the interior of the MCT225 enclosure is temperature controlled, creating a conditioned measurement room stable to 20°C ± 1°C. “Plastic injection-mold, metal diecast manufacturers and additive manufacturers can significantly reduce correction cycles during tool development and production start-up, accelerating time to market for new products,” said the spokesperson. “All shrinkage, porosity, deformation and dimensional errors are clearly identified in easy to understand inspection reports, making it easier to define corrective actions. “Emerging production techniques like additive manufacturing now make it possible to produce small and highly complex components that cannot be inspected using touch probes or optical sensors. Here too MCT225 makes it possible to measure and analyze these components for porosity among other issues, in a single non-destructive operation.” For more information contact: Nikon Metrology, Inc. 12701 Grand River Avenue Brighton, MI 48116 810-220-4360 sales_us@nikonmetrology.com www.nikonmetrology.com