3D measurement system claims big speed boost
An
Acticm product story
Edited by the Engineeringtalk editorial team
Mar 4, 2005
Following extensive prototype trials, Renault has chosen ActiCM's new optical measuring system for control and inspection of car bodies.
Following extensive prototype trials, Renault has chosen ActiCM's new optical measuring system for control and inspection of car bodies.
ActiCM will be present at several trade fairs in 2005, including Industrie Lyon, France, from 8th to 11th March 2005 and Control in Sinsheim, Germany, from 26th to 29th April 2005.
AdventCR is a noncontact fully automatic 3D optical measuring system, for ultrafast offline control and inspection of car bodies, designed for use on production lines.
It can be used for both geometric and surface point measurements and is 10 times faster than current systems.
It is accurate to between 50 and 300um, depending on the material and the measurement volume.
Renault will purchase a version that is even more efficient than the prototype the French car maker has approved, which had only one IVD (intelligent vision device), whereas the final version will have four IVDs, to reduce control times even further.
"Today, measuring the complete car body takes eight to ten hours, as opposed to two hours with the AdventCR prototype", said Baptiste Faivre d'Arcier, leader of the PACA project (photogrammetry applied to car bodies) at Renault, which validated the AdventCR prototype.
These two hours can be reduced to 30 minutes if four IVDs are used, and the cost of this system would still be equivalent to that of a current CMM (co-ordinate measuring machine).
Calculations and measurements can be deferred, so that the measured part is available immediately.
AdventCR is a complete solution composed both of software and hardware.
The software handles the powerful calculation and analysis of the image processing, the photogrammetry process and the results analysis and statistics report.
The hardware manages the data, and includes up to eight IVDs - a very compact optical sensor that incorporates two digital high-definition CCD cameras, along with several light sources.
Each IVD can be mounted in a measurement tunnel or on a robot's arm.
The robot is only used for transporting the IVD and is not involved in the system's precision chain in any way.
The Advent range is available in several versions: AdventCR for automobile manufacturing production lines; AdventSU for automotive subcontractors; AdventSP for the aerospace sector; and AdventME for mechanical machining.
These different versions will be marketed progressively from 2005 to 2007.
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