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Rotating machinery is widely used in many fields of engineering. In rotating machinery design, the rotary precision is usually the first issue to determinate. Rotary precision is affected by many factors, such as tolerance design, assembly process and part deformation. In this paper, based on small displacement torsor (SDT) model, the tolerance representation and tolerance analysis was discussed firstly...
A method to substitute the actual mating surfaces into an ideal mating surfaces is proposed in this paper. A unit normal vector is used to express their position and orientation. To simulate the variation propagation in assemble process, an error accumulate model was built in the foundational coordinate system and can be solved by the homogeneous transformation matrix (HTM). Thus the accuracy prediction...
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