Statistical tolerance analysis by integrating form deviations

The objective of this paper is to present the analysis of geometric tolerances of the assembly design with the deviations and clearance method. The authors will study initially the tolerance analysis using the worst case method, in the second step, they will integrate statistical tolerancing approach, and, finally, they will integrate form deviations of the parts to study the impact of these deviations on the tolerance analysis. To illustrate this process of analysis, the authors used a classic case of assembly and they considered the location tolerance (perpendicularity) and the form tolerance (flatness). Finally, a comparative study between the two statistical methods was illustrated.