The Multi-Step Multi-Point (MSMP) pressure straightening method is widely recognised for its effectiveness in manufacturing linear guideways. However, current theoretical analyses are limited to two-dimensional models, which oversimplify the complex nature of the straightening process. In reality, this process involves three-dimensional deformation and results in residual stress, adding complexity to the theoretical understanding of MSMP straightening. To address these challenges, this paper introduces an innovative MSMP straightening method specifically designed for three-dimensionally deformed linear guideways. It integrates both straightening and residual stress theories to thoroughly examine the impact of residual stress in various directions. Moreover, the paper develops a stroke-based straightening model that accounts for residual stress effects. Theoretical analyses are validated through comprehensive experiments, including bending and straightening tests. This research establishes a solid foundation for the study of pressure straightening three-dimensional deformed components.
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