DVO 2
2Pages

Catalog excerpts

Oscillating Device For ODAC® Laser Gauges DVO 2 In-line height and width measurement of profiles. Very accurate readings, independent of position and twist. The Problem Non-contact in-line measurement of profile shapes has always been an issue. Most optical systems using laser or CCD cameras measure the height of the shadow of the product, and is subject to strong variations if the product is not perfectly aligned with the laser beam. A twist angle of 1° or less can already cause errors which are often larger than the specified product tolerance. Most profiles, in particular steel, can not be guided absolutely parallel due to their mechanical stiffness and due to the required forces for guiding. The oscillating device DVO 2 is a simple accessory for some ODAC laser head models used for such applications. With a continuously pivoting motion of the laser heads combined with the electronic "minimal value detection" of the relevant dimension, the height (or thickness) will be measured very accurately. The DVO 2 is an autonomous unit and can directly be connected to the mains, therefore it does not require an external control unit. The data acquisition, processing and display can be carried out via a processor of ZUMBACH's USYS series or via the CI 1J/ EN-RS, -DP, -EN, -PN -EI computer interface through a higher level computer system. Generic product shapes such as triangles, squares, rectangles etc, define the requirement of circumferential measurement needed to ensure all critical parameters are measured with optimal timing and precision. This ultimately led us to designing a solution with capabilities from 1 to 3 measurement axes. Where 3 axis measurement is the ultimate solution, providing precise ovality and dimensional measurement simultaneously. In consideration throughout the design phase, was what is it that is required for our end customers, as it is the case for all ZUMBACH developments. Ultimately a solution flexible enough to mount anything from a single axis to a 3 axis measurement gauge would be sought, ensuring that optimum measurement and capability could be realised. Hence the oscillating device DVO 2 has evolved as an all round all fitments solution for all markets. Typical product shapes and measured dimensions Measurable with 1-axis heads Measurable with 2-axis heads

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DESCRIPTION DVO 2 is a mechanical oscillating device for ODAC measuring heads. In the adjusted angle (adjustable between – 50° up to +50°), the device oscillates the measuring head (mounted on a disc) continuously around the product. The unit is driven by a stepper motor. The required cycle time is set by means of a potentiometer. Thanks to its rugged design, the DVO 2 can be easily installed and operated in each production line without additional reinforcement elements. The protection type of the oscillating device as well of the ODAC measuring heads is adequate enough for the integration...

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