Validation of in-line surface characterization by light scattering in Robot Assisted Polishing

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Abstract

The suitability of a commercial scattered light sensor for in-line characterization of fine surfaces in the roughness range Sa 1 – 30 nm generated by the Robot Assisted Polishing (RAP) was investigated and validated. A number of surfaces were generated and directly measured with the scattered light sensor on the machine in a shop floor environment. Scattered light roughness measurements of the whole surfaces were performed to investigate the measurement method suitability for 100% quality control. For comparison, the surfaces were measured with reference optical instruments in laboratory conditions. Comparison of the scattered light measurements results taken on the machine with the reference optical roughness measurements taken in laboratory demonstrate the capability of the scattered light sensor for robust in-line surface characterization. This allows for the RAP process control by proper process endpoint detection in a multi-step polishing sequence. The measurements of the whole polished surfaces demonstrate improved reliability of the measurements with fast measurement rate, well suitable for cost- efficient 100% quality assurance.
Original languageEnglish
Title of host publicationProceedings of the 3rd International Conference on Virtual Machining Process technology (VMPT)
Number of pages8
Publication date2014
Publication statusPublished - 2014
Event3rd International Conference on Virtual Machining Process Technology - University of Calgary, Calgary, Alberta, Canada
Duration: 20 May 201423 May 2014
Conference number: 3
http://www.nserc-canrimt.org/VMPT2014/index.html

Conference

Conference3rd International Conference on Virtual Machining Process Technology
Number3
LocationUniversity of Calgary
Country/TerritoryCanada
CityCalgary, Alberta
Period20/05/201423/05/2014
Internet address

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