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3D manufacturing tolerancing with probing of a local work coordinate system

Abstract : The safety and performance requirements for mechanisms are such that the necessary accuracy of part geometry is difficult to reach using classical manufacturing processes. This paper proposes a manufacturing tolerance stack-up method based on the analysis line method. This technique enables both the analysis and the synthesis of ISO manufacturing specifications through a new approach which relies on production specifications, adjustment specifications and their analysis to stack up the 3D resultant. The originality of the method resides in the 3D calculation for location requirements, which takes into account angular effects and probing operations on numerical-control machine-tools in order to define a local Work Coordinate System (WCS). For achieving tolerance analysis, deviations are modelled using Small-Displacement Torsor. This tolerance analysis method enables one to determine explicit three-dimensional linear relations between manufacturing tolerances and functional requirements. These relations can be used as constraints for tolerance optimization.
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Submitted on : Monday, June 6, 2016 - 10:54:38 AM
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Marie Royer, Bernard Anselmetti. 3D manufacturing tolerancing with probing of a local work coordinate system. International Journal of Advanced Manufacturing Technology, Springer Verlag, 2016, 84 (9), pp.2151-2165. ⟨10.1007/s00170-015-7797-4⟩. ⟨hal-01326951⟩



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