Investigations of the springback compensation on air bending with incremental stress superposition

增量应力叠加空气弯曲回弹补偿研究

基本信息

项目摘要

Innovative lightweight technologies are more important than ever because of rising energy and raw material costs. For the implementation of lightweight high-strength thin-walled structures, sheet materials with constant or variable thickness offer numerous advantages over common materials. Forming these materials represents a high problem. Because of their comparatively high amount, and usually unknown springback, larger shape and dimensional variations occurs, so a subsequently calibration and post-processing processes are required. This is particularly true for air bending, which has found wide industrial application due to its high flexibility.In this project, technological options are examined to reduce the amount of springback significantly by applying the new method "air bending with incremental stress superposition". A particular feature and advantage of this new variant is the local compressive stress superposition in the forming zone. This results in a local springback compensation. Due the movement of the roll through the bending line, a constant bending angle can be achieved. Since this method neither requires expensive tools nor a complex control, it provides a flexible and cost effective alternative to other methods for forming of lightweight materials.For a reliable production of tailor-made and perfectly contoured bent parts by air bending with incremental stress superposition, a deep understanding of the process is required. So a detailed knowledge of the processes taking place during the stress superposition is needed. In the process both the achievable accuracy and quality of the component have to be well known in advance. The same is true for the applications and manufacturing limits in order to demonstrate the industrial application suitability for the bending of both thin sheets of high-strength materials and tailored blanks.So the objective of the project is the scientific development of fundamental knowledge and its implementation in a novel bending method. This novel process gives the possibility to manufacture flexible and economical innovative lightweight components made of new materials produced at a high level of quality.
由于能源和原材料成本的上升,创新的轻量化技术比以往任何时候都更加重要。对于轻质高强度薄壁结构的实现,具有恒定或可变厚度的板材提供了许多优于普通材料的优点。形成这些材料是一个很大的问题。由于其回弹量相对较大,且回弹量通常未知,会产生较大的形状和尺寸变化,因此需要进行后续的校准和后处理过程。特别是空气弯曲,由于其高度的柔性而得到广泛的工业应用。在本项目中,研究了通过应用新方法“增量应力叠加空气弯曲”来显著减少回弹量的工艺方案。这种新变型的一个特殊特征和优点是在成形区中的局部压应力叠加。这将导致局部回弹补偿。由于辊通过弯曲线的运动,可以实现恒定的弯曲角度。由于这种方法既不需要昂贵的工具,也不需要复杂的控制,因此它为轻质材料的成形提供了一种灵活且具有成本效益的替代方法。为了通过增量应力叠加的空气弯曲可靠地生产量身定制的完美轮廓的弯曲零件,需要对该工艺有深入的了解。因此,需要对应力叠加过程中发生的过程有详细的了解。在此过程中,必须事先了解组件可达到的精度和质量。同样,为了证明高强度材料薄板和定制坯料弯曲的工业应用适用性,应用和制造限制也是如此。因此,该项目的目标是科学发展基础知识并将其应用于新的弯曲方法。这一新工艺使制造灵活、经济的创新轻质部件成为可能,这些部件由高质量的新材料制成。

项目成果

期刊论文数量(2)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Bending of Tailored Blanks Using Elastic Tools
使用弹性工具弯曲拼焊板
  • DOI:
    10.4028/www.scientific.net/amr.1018.301
  • 发表时间:
    2014
  • 期刊:
  • 影响因子:
    0
  • 作者:
    A. Weinrich;Ch. Becker;F. Maevus;S. Chatti;A.E. Tekkaya
  • 通讯作者:
    A.E. Tekkaya
Analysis of the Potential of Incremental Stress Superposition on Air Bending
空气弯曲增量应力叠加潜力分析
  • DOI:
    10.4028/www.scientific.net/kem.622-623.1173
  • 发表时间:
    2014
  • 期刊:
  • 影响因子:
    0
  • 作者:
    A. Weinrich;Ch. Becker;F. Maevus;S. Chatti;A.E. Tekkaya
  • 通讯作者:
    A.E. Tekkaya
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Dr.-Ing. Frauke Maevus其他文献

Dr.-Ing. Frauke Maevus的其他文献

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{{ truncateString('Dr.-Ing. Frauke Maevus', 18)}}的其他基金

Entwicklung eines Systems zur optimierten rechnerintegrierten Produkt- und Prozeßgestaltung für die Biegeumformung von Feinblechen
开发用于薄板弯曲成型的优化计算机集成产品和工艺设计的系统
  • 批准号:
    5104298
  • 财政年份:
    1998
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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