Abstract
The aim of this paper was to present a tolerance modeling method of complex features. Geometric deviation of a characteristic/feature is divided into intrinsic deviation and situation deviation based on the new generation geometrical product specification in the paper. On the basis of vector parametric representation of theoretical surface, intrinsic deviation between substitute surface and ideal surface is described by vector function. Based on 3D rigid body kinematics, homogeneous transformation matrix-based method is used to describe the situation deviation of the substitute surface relative to the reference feature in Euclidean space. An example was given using the proposed modeling method.
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