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Abstract <p>This article examines the parameters of step bending, which is used in the manufacture of thin-walled structural parts. Its advantages over other bending methods include the ease of implementation and versatility, as well as the absence of specialized tooling and complex deformation equipment. Step bending is a method of forming a large curvature radius in a sheet metal part by creating a successive series of V-shaped flexures in close proximity to each other. Based on an analysis of the process of step bending of sheet metal, the relationship between the relative punch stroke and the number of bending steps at a full bending angle of 90° has been determined for commonly used slot-to-sheet thickness ratios. These results are used to determine step flexural parameters for the production of a number of structural parts. For ease of practical use, the expression for profile deviation is presented in dimensionless form.</p>

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Determination of Punch Stroke during Step Bending of Thin Sheet Metal

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • A. O. Karfidov,
  • N. A. Chichenev,
  • M. V. Vasiliev,
  • O. N. Chicheneva

摘要

Abstract

This article examines the parameters of step bending, which is used in the manufacture of thin-walled structural parts. Its advantages over other bending methods include the ease of implementation and versatility, as well as the absence of specialized tooling and complex deformation equipment. Step bending is a method of forming a large curvature radius in a sheet metal part by creating a successive series of V-shaped flexures in close proximity to each other. Based on an analysis of the process of step bending of sheet metal, the relationship between the relative punch stroke and the number of bending steps at a full bending angle of 90° has been determined for commonly used slot-to-sheet thickness ratios. These results are used to determine step flexural parameters for the production of a number of structural parts. For ease of practical use, the expression for profile deviation is presented in dimensionless form.