The problem of achieving fast and high-quality measurements that provide feedback on product quality in industries is very common. In the case of extremely complex products, where a narrow tolerance is required for proper assembly, the reliability of the obtained measurements is very important. The geometric properties of such finished products, where welding is part of the assembly, also depend on the deformation of the material during the thermal treatment of joining smaller pieces. The shape of the welded pieces on the final product is therefore different from the shape of the welded pieces, which can pose a problem during assembly.
Therefore, we built and created a measurement system for complex products, such as a wheel carrier, with the help of a scanning device, where we analyzed the quality of the obtained measurements. The measuring system consists of a measuring and scanning program, which we have described in more detail. We also presented the results of the analysis of the measuring system according to MSA procedures 1 and 3, along with an additional analysis comparing the two measuring devices. We also described the improvements that we made to achieve a more stable and robust measuring system with improved accuracy and precision of the measurement results.
Furthermore, we also presented a methodology for defining new stamping parts for the purpose of compensating the deformation of sheet metal during welding. We verified the methodology with a simple model of welding two identical plates. We conducted a detailed analysis of the obtained results and determined the methodology’s applicability. We also applied the principle of defining a new stamping part to one of the wheel carrier stamping parts and created a proposal for a new stamping part shape in the form of a CAD model. After careful consideration, we also upgraded the methodology for the new computer-generated stamping part.
The thesis is equipped with descriptive and pictorial material. In the first chapter, we started by presenting the topic of the final work. Then we provided a more detailed presentation of the hardware and software that we used. In the Methodology chapter, we presented the operation of the scanning device, the scanning principle and the method of generating a mesh. We also described the concepts of the measuring program and presented the general methods of analysis of the measuring system. In this chapter, we also described the concepts and equations for the definition of a new stamping part.
In the Results chapter, we presented the scanning and measuring program for the wheel carrier, as well as all the results and descriptions of the analysis of the built measuring system. In addition, the results of a simple two-plate welding model with detailed descriptions and analyses are included. The results of the concept used on a real stamping part and the results of the analysis of the new computer-generated stamping part shape are also presented.
|
