The Development Of The Key Modulesof The Command Valve Digital Assembly System

Assembling is the key process of the production of mechanical products. The efficiency and quality of assembling has critical influence of increasing productivity and ensuring the production quality.Command valve is the critical part of rockets, which is of great importance for insuring the safety of the rocket’s power devices. Even through having a high manufacturing accuracy requirement, it still has the problem of unstable quality and low acceptance because of the complex structure. To meet the demand of the rockets’ frequently launching, it is urgent needed to make an improving on the base of existing method and process of command manufacturing to ensure the quality stability.This thesis made a demand analysis of the key parts of the command valve digital assembling system, which guide the system to form on the base of database and dimension input modules. The pivotal module of the system is the match module. The system also formed with the temperature-structure coupling field analysis module and the demo module. The dimension input module is built in the environment of VB.NET. An ACCESS database is built after the analysis and design for the system. Union programming technology of VB.NET and ACCESS is applied in the process of dimension input module developing. Facing on the structural features and the problems of the valves, this paper studied the algorithm of valve matching, on the basis of precision match we put forward an algorithm which takes the advantage of heurism searching, and develop the matching module with the stratage of the matching algorithm. The coupling analysis module is developed on the basis of matching results. The demo module is designed to give an assembling process demo of every assembly.The development of command valve matching module makes it convenient to manage the part and to match, which helps ensuring the quality stability of the valves. The coupling analysis module can give advice to valve manufacturing and assembling process. And the demo module accelerates the digital factory upgrading. The work did in this paper is of great importance to improving the command valve reliability.