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Research on Laser Thread Form Bending of Stainless Steel Tube

Authors
  • Li, Fuqiang1
  • Liu, Shourong2
  • Shi, Aiping1
  • Chu, Qiulu1
  • Shi, Qiang1
  • Li, Yuxiang1
  • 1 Jiangsu University, School of Agricultural Equipment Engineering, 301, Xuefu Road, Zhenjiang, 212013, China , Zhenjiang (China)
  • 2 China Agricultural University, College of Engineering, 17, Tsinghua East Road, Haidian, Beijing, 100083, China , Beijing (China)
Type
Published Article
Journal
International Journal of Precision Engineering and Manufacturing
Publisher
Korean Society for Precision Engineering
Publication Date
Apr 24, 2019
Volume
20
Issue
6
Pages
893–903
Identifiers
DOI: 10.1007/s12541-019-00068-2
Source
Springer Nature
Keywords
License
Yellow

Abstract

Compared to traditional bending methods, laser bending can yield products with better shapes and higher quality using the simpler equipment. In this paper, the mechanism of Laser-assisted tube bending is elaborated, and then the influence of processing parameters (including laser power, scanning speed, spot diameter, and scanning times) on the bending angle is studied with both the finite element method and experiments. The bending angle increases with an increase of laser power and spot diameter and with a decrease in the scanning speed. Three-dimensional (3D) thread form bending can be achieved by planning the optimal route, scanning parameters, and the number of laser scans. In contrast to the desired thread diameter of 20 mm and thread pitch of 180 mm, the resulting thread of the stainless steel tube is close to the target shape with errors of 3% for thread diameter and 2.5% for thread pitch, which are both in an acceptable range and thus verify the validity of the parameters selection and route planning method.

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