Assembly accuracy modeling of precision machine tool feeding system based on polychromatic sets theory

作者：Zhong Wei Yu; Wang Hui Fen^*; Liu Ting Yu; Liang Guang Xia; Cai Shang Wen

来源：Computer Integrated Manufacturing Systems, 2014, 20(10): 2440-2456.

DOI：10.13196/j.cims201410013

• Assembly tolerance
• Feed systems
• Polychromatic sets theory
• Representation model
• Small displacement torsor
• Tolerance information

To compensate for the shortage of precision in the mechanical assembly process, a product assembly precision modeling based on polychromatic sets theory was proposed, which provided an efficient assembly precision intelligent calculation methods for designers in the initial design stage of product. A set of computer-aided automatic generation process of assembly precision was provided by this model, the assembly constraint matrix, assembly surface features constraint contour relation matrix, assembly tolerances type contour boolean matrix and assembly spatial relationships contour boolean matrix were constructed. The adjacency matrix was used to storage the information in computer. Thus the whole process mapping from part assembly surface feature extraction and feature constraints to assembly whole precision was realized. The model contained the extrinsic constraint conditions of product functional requirements, geometry features, tolerance criteria and tolerance allocation rule, which could illustrate the accuracy and practicality of the model. The effectiveness of model was proved by CNC machine tool feed system application.

• 出版日期2014
• 单位南京大学