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Modeling of variation propagation in multistation machining process is one of the most important research fields. In this paper, a mathematic model to depict the part dimensional variation of the complex multistation manufacturing process is formulated. A linear state space dimensional propagation equation is established through kinematics analysis of the relationships among of locating parameter...
A self-servicing system of satellite is one coupling system. The attitude of satellite is affected by the movements of a manipulator. According to the structure of the arm, a dynamic model of the self-servicing system is put forward. The operations of the self-servicing system are simulated in ADAMS, which result shows that different movement paths of the arm make different influence on the attitude...
Assembly process directly affects quality and performance of the product. In this paper, the model of the missile's cabin is built under its structure design. According to the constrained relationship among parts, the integrated interference matrix of the missile's cabin is defined, the digraph of the assembly relations among parts of the missile cabin is provided, and the assembly precedence relation...
Assembly processes involve a large number of operations and uncertain factors, which makes the random deviation of assembly quality. How to quantifiably evaluate the final assembly quality remains a question. This paper presents a new methodology to fulfill the task. Based on the analysis of the factors influencing assembly quality of missile cabin, assembly quality model is formulated to establish...
The analytic model of machining errors caused by the deformation of workpiece-fixture system is put forward for the thin walled parts. To facility the analysis, the traditional mathematical model of tolerance zone is redefined. According to the deformation value of workpiece-fixture system calculated by FEA (Finite element analysis), transform matrixes of workpiece location and cutting points deviation...
The deformation error for the machining of thin-walled part has a great influence on the machining quality of the part. However the traditional methodologies are still unsuccessful in studying the influence between the workpiece-fixture system's stiffness and machining errors of part. In this paper a framework to curb the machining errors based on the deformation of workpiece-fixture system is provided...
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