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Investigation of Effects (Welding Sequence, Fixturing, Welding Points) on Distortions after Spot Welding for Determining Individual and Cumulative Tolerances

机译：确定点焊和累积公差对点焊后变形的影响（焊接顺序，夹具，焊接点）的研究

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Abstract: The manufacturing and GPS (Geometrical Product Specifications and Verification) have to be thought and analysed together. Welding and Metal Forming are two of manufacturing methods, which are used to create sheet metal parts assembly groups. The dimensions do not stay steady and they change during these two manufacturing methods. Because firstly, after forming (for example bending) the springback and secondly, after welding (for example spot welding) the distortions exist. In this study, the distortions after spot welding are researched and their effects on tolerance chain and assembly tolerances are analysed. These distortions are determined with analysis software after designing some sheet metal part assembly examples. After that, these distortions are achieved with real measurement (scanning) after welding of the sheet parts. At the final step, the analysis and measurement results are compared.
机译：摘要：必须与制造和GPS（几何产品规格和验证）一起考虑和分析。焊接和金属成型是两种制造方法，用于创建钣金零件装配组。尺寸不稳定，并且在这两种制造方法中会发生变化。因为首先，在形成（例如弯曲）回弹之后，其次，在焊接（例如点焊）之后，存在变形。在这项研究中，研究了点焊后的变形，并分析了它们对公差链和装配公差的影响。在设计了一些钣金零件装配示例之后，可以使用分析软件确定这些变形。此后，在焊接板材后通过实际测量（扫描）实现这些变形。在最后一步，比较分析和测量结果。

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