4.6 Article

Forming characteristics of a novel robot-based tube bending process

期刊

出版社

SPRINGER LONDON LTD
DOI: 10.1007/s00170-022-09780-2

关键词

Robot-based tube bending; Rotary draw bending; Forming characteristics; Finite element simulation; Forming quality

资金

  1. Fundamental Research Funds for the Central Universities [NS2021046]
  2. National Natural Science Foundation of China [52105362, 52105360, 5201101342, U1937206]
  3. Natural Science Foundation of Jiangsu Province [BK20200453, BK20210310]
  4. Brain Pool Program - Ministry of Science and ICT through the National Research Foundation of Korea [NRF-2021H1D3A2A01100036]

向作者/读者索取更多资源

This study proposes a novel robot-based tube bending forming technology and investigates its forming mechanism and characteristics using finite element modelling. The obtained results show that the robot-based tube bending forming process improves the stress, strain, and thickening rate of the bent tube compared to traditional rotary draw bending.
With the advancement of 'Industrial 4.0', industrial robots are becoming increasingly widespread. Thus, this study proposes a novel robot-based tube bending forming technology (RTBF) to increase the flexibility of manufacturing thin-walled complex-shaped tubes and to improve their quality. The forming mechanism and characteristics of the proposed technology are investigated using finite element modelling. Besides, the theoretical models for calculating the tube's inner and outer sides' equivalent stress are also presented. The obtained results showed that the bending die feeds in the tube axis direction while rotating in the novel robot-based tube bending forming, and the axial tensile stress T on the tube during the bending process is reduced. Comparing these results with the traditional rotary draw bending (RDB), the tensile stress and strain on the outer side of the bent tube and the thinning wall rate are both lower. On the other hand, the compressive stress and strain on the inner side of the bent tube and the wall thickening rate are higher in the robot-based tube bending process. The maximum cross-sectional distortion of a bent tube in the robot-based tube bending forming process remains unchanged with increasing bending angle and is always smaller than in the RDB process: the larger the bending angle, the more noticeable the difference. In summary, the robot-based tube bending forming technology significantly reduces the small diameter tube's wall thickness and cross-sectional distortion.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据