Research on assembly accuracy of vertical launcher based on shape error

As an important part of the shipborne missile weapon system, the overall assembly accuracy of the shipborne vertical launcher will affect the initial accuracy of the test missile launch to varying degrees. Therefore, it is of great significance to research on the assembly accuracy of the launching device. Aiming at the geometric error characteristics of the contact surfaces between the assemblies in the launching device, this paper uses small displacement spins to represent the geometric error of the contact surfaces, and proposes a method for calculating the fit error based on the contact state. The research results show that this method can determine the contact state of the launcher assembly, and the influence of the shape error distribution of the contact surface on the precision assembly cannot be ignored.