Optical micrometers measure metal stampings in production

Micro-Epsilon: In a fully automatic measurement installation, optical micrometers are being used to measure the roundness and diameter of stainless steel metal stampings to micrometer accuracies.

With a cylindrical, ground stainless steel metal stamping, two optical micrometers of the optoCONTROL 2600 series from Micro-Epsilon are applied in a fully automatic measurement installation. Roundness and diameter are measured at three positions to a measurement accuracy of +/-2 µm. The roundness is determined reliably using two focal points connected via a laser line (imaginary centre axis). Using an encoder, rotations of the blank are performed in order to provide high precision edge and diameter measurements and assigned to the respective angle position. In this case, three rotations are conducting to the required measurement results. Next, concentricity and curvature of the blank are calculated. The optoCONTROL 2600 optical micrometer therefore provides a multi-segmented programme solving both tasks simultaneously. Due to a telecentric lens and optical filters, the system is also insensitive to ambient light. The digital RS232 interface outputs the edge and diameter values.

The optoCONTROL 2600 is a telecentric, optical micrometer with an internal high resolution CCD camera for geometrical measurements. LED technology and a minimum number of mechanical components provide an extremely long service life. Like all optical micrometers from Micro-Epsilon, optoCONTROL 2600 operates on a non-contact, wear-free basis.