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Stemmer supplies components for vision system

A Stemmer Imaging product story
Edited by the Engineeringtalk editorial team Dec 17, 2008

Pace Automation is building its Pace Vision System (PVS) around vision components supplied by Stemmer Imaging (formerly Firstsight Vision).

Used primarily in the automotive and aerospace industries, the PVS is an intelligent high-speed vision system for inspection of standard and special purpose fasteners, including screws and rivets at up to 1,200 parts/minute.

Stemmer Imaging supplies all the key vision components for the system, including Guppy F-033B cameras from AVT, high luminosity back lighting LEDs from CCS, lighting controllers from Gardasoft, Stemmer Imaging industrial PCs and all necessary lenses, cables and interface cards.

The inspection and measurement software has been developed by Pace Automation.

The PVS captures images of the fasteners and performs various user-configurable measurements on them.

Parts with measurements outside the chosen tolerances are automatically rejected.

The PVS is a modular system, capable of accommodating up to four cameras.

Up to two cameras may be used for inspection of fastener heads and up to three cameras may be configured for shank inspection.

General manager, Tony Crossland, said: 'Sourcing vision components from Stemmer Imaging for the PVS has brought us a number of benefits.

'The cameras, optics and illumination have been carefully selected to minimise image distortion and to maximise accuracy.

'We also know that Stemmer Imaging tests all its components for compatibility and this is especially important for our multi-camera systems.' A range of measurements is offered by the PVS including area measurements for both fastener shanks and heads.

Other head measurements include: head shape, average head diameter, maximum head diameter across corners and minimum head diameter across flats.

Head recess shape and diameter measurements can also be made.

Instead of using generic parameters, the shank options can be set for different thread types to give the most accurate measurements possible for each type.

The thread type can be set for fine, coarser or custom threads.

Measurements include outer thread diameter, inner thread diameter, thread pitch and thread helix angle.

Minimum, maximum and average diameter measurements can be made on non-threaded shanks.

Length measurements can be made of the total part, the length of the part's shank and the height of the part's head.

Find out more about this article. Request a brochure, download technical specifications and request samples here.

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