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Definition and Key Technologies of Uniform Assembly for Precision Electromechanical Products

： Currently, assembly process plays an increasingly important role in ensuring the assembly accuracy and assembly performance stability of precision electromechanical products. Aiming at the problem that the existing assembly theory and method based on geometric control cannot fully guarantee the assembly accuracy and assembly performance stability of products with high precision in service, the concept of uniform assembly is proposed. Uniform assembly is the general term of all kinds of assembly methods, processes and equipment technologies for the uniform distribution of stress in a connection structure. The connotation system, main features, connection structure types and key technologies of uniform assembly are described in detail. In addition, the main research directions of uniform assembly are discussed in detail from six aspects: the design of electromechanical products oriented to uniform assembly, the process planning and design oriented to uniform assembly, the measurement and detection oriented to uniform assembly, the process equipment oriented to uniform assembly, the auxiliary assembly and adjustment oriented to uniform assembly, and the compensation strategy oriented to uniform assembly. Finally, the significance and function of uniform assembly to the assembly technology of electromechanical products is summarized.