Tech Front


phases of decoding the original design details with program- matic analysis and reproducing an “identical” counterpart. The most challenging technical tasks in both phases are related to manufacturing processes because the history or trials of many manufacturing processes are erased in the final product. In TP13PUB47, Michel Dechape updates a 1976 paper by


V.R. Burrows on the principles and applications of pneumatic gaging. Pneumatic gaging—controlling the supply of com- pressed air to a system and using simple flow or pressure indicators to display the dimensional relationship between a nozzle and a workpiece—served industry admirably before electronic gaging became a reliable and economical workshop system. Patented advances in electronic converters make air gaging more valuable than ever, allowing linear measurements over a range four times that of previous systems, easier tooling design and machining, less air consumption, operation with no adjustments or maintenance and precise and repeatable regulation and measurement (microinch resolution).


Metrology Research T


he science of precise measurement was represented at the recent NAMRC41-MSEC 2013 advanced manufactur- ing conference. Two MSEC papers were presented by authors from Carl Zeiss IMT’s US and German offices. Marcin Bauza and Hubert Lettenbauer describe the advantages and chal- lenges of the migration of computed tomography (CT) from medical (qualitative) applications to industrial (quantitative) metrology. CT provides unique information on the metrological aspects of complex structures and inaccessible features in applications ranging from consumer products to electronics, automotive, aircraft and medical. Bauza, Christopher Cilip and Daniel Pratt also investigate visual inspection of freeform glossy surfaces using phase-shifted deflectometry. Phase de- flectometry also provides a means to validate prototype parts and fully optimize their processes before final implementation into manufacturing.


See us at SOUTH-TEC Booth #411


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