Vollmer - Segment Roll for Shape Measurement

Friedrich Vollmer Feinmessgerätebau GmbH has engineered segment rolls specifically targeted at shape measurement in stretch, bending, and levelling lines. The design incorporates outer rings on individual segment bodies that operate with remarkable smoothness, eliminating the need for auxiliary drives even when engaging with low strip tension and varying wrap angles. These segment rolls allow for continuous and highly precise shape measurement, with segment bodies available in widths of 33, 50, or 100 mm. Constructed with a coated outer ring, each segment is affixed to an inner base ring using ball bearings, which are directed by a ball bearing system along a rigid central axis. Each segment's axis is equipped with a force sensor leveraging strain gauge technology to monitor radial force in the strip within each measurement zone. The collected data is transferred to the flatness computer through connections like Profinet, TCP/IP, or analog and digital I/Os. These technical features ensure accurate communication with the system technology.