Impact of fixture design on sheet metal assembly variation

Impact of Fixture Design on Sheet Metal Assembly Variation

This paper presents a new fixture design methodology for sheet metal assembly processes. It focuses on the impact of fixture position on the dimensional quality of sheet metal parts after assembly by considering the effect of part variation, tooling variation and assembly springback. An optimization algorithm combines finite element analysis and nonlinear programming methods to determine the op...

Fixture Failure Diagnosis for Sheet Metal Assembly with Consideration of Measurement

A Simple Model of Sheet Metal Assembly

This paper is meant to serve as a case study of mathematical modeling in industry. The problem, which arises in the automotive industry, is to predict the variation in the final assembly given the variation in the parts and tooling. In this paper, we present a simple model of welding and clamping of beams which demonstrates that the order in which the clamps and welds are applied influences the...

Development of a Prediction Model Based on RBF Neural Network for Sheet Metal Fixture Locating Layout Design and Optimization

Fixture plays an important part in constraining excessive sheet metal part deformation at machining, assembly, and measuring stages during the whole manufacturing process. However, it is still a difficult and nontrivial task to design and optimize sheet metal fixture locating layout at present because there is always no direct and explicit expression describing sheet metal fixture locating layo...

Flexible Beam-Based Modeling of Sheet Metal Assembly

In this paper, a flexible beam-based modeling method is proposed for dimensional control of the sheet metal assembly process. This method uses developed decomposition principles of key design and manufacturing characteristics for integration of assembly process and product design. It allows for modeling of assembly processes and product in the early design stage of process and product design. T...