Precise measurement of ultra-fine surface structures
Particularly in the automotive industry, extremely high demands are placed on product quality. Confocal chromatic sensors from Micro-Epsilon enable highly accurate inspection of ultra-fine surface structures. The confocal chromatic confocalDT IFS2405-0,3 and IFS2407/90-0,3 sensors determine, for example, the surface roughness to micrometer accuracy.
These sensors are used, among other things, for measuring the roughness of brake discs. The disc is smooth, polished and often shiny. Surface structures are almost imperceptible to the human eye, these ultra-fine structures become clearly visible only with a microscope. These are absolutely necessary to create friction and to ensure a high braking force even after numerous braking maneuvers.
Both sensors differ in terms of their size and design. In addition, the IFS2407/90-03 has a lateral 90° beam path which means it is particularly suitable for special installation scenarios for example when inspecting cylinder liners. The axial beam path of the confocal sensors avoids shadowing effects, enabling measurements even in sleeves and recesses. High precision measurements with tilted objects are also possible.
Confocal chromatic measurement systems are used for micrometer precise displacement, distance measurements and intensity evaluation. Based on the determination of the distance, surface topographies of objects can be obtained. Unevenness and scratches influence the degree of reflectance causing a change of the signal intensity. Therefore, an exact image of the target and its fine structures is produced.