Manufacturing Technology 2021, 21(5):668-681 | DOI: 10.21062/mft.2021.081

Improving Rotary Draw Bending Process by Changing a Geometry of the Pressure Bar

Jan Řiháček ORCID..., Eva Peterková ORCID..., Michaela Císařová ORCID...
Brno University of Technology, Faculty of Mechanical Engineering, Institute of Manufacturing Technology, Technická 2896/2, 616 69 Brno, Czech Republic

The paper is focused on an analysis and optimization of the rotary draw benging process to eliminate bent tube ovality by modification of the pressure bar geometry. The bending process is realized on WafiosCNC bending machine. A tube that is bent for an automotive application is made of 34MnB5 steel. Currently, after tube bending process by an angle of 120°, an unacceptable ovality occurs. Therefore, it is necessary to improve the quality of production and thus prevent the formation of unacceptable ovality. In this case, the optimization of the pressure bar geometry is performed. For this reason, a numerical simulation using finite element method in ANSYS software is performed. Before the actual optimization, an accuracy of the simulation is verified by analysing of the current state and comparing it with simulation results.

Keywords: FEM, numerical simulation, ANSYS, 34MnB5 steel, tube bending
Grants and funding:

The paper was supported by the project "Analysis of formability and weldability of materials produced by 3D wire metal printing" within the specific research of Faculty of Mechanical Engineering, Brno University of Technology relating to grant no. FSI-S-20-6336.

Received: April 9, 2021; Revised: August 30, 2021; Accepted: October 21, 2021; Prepublished online: October 21, 2021; Published: November 25, 2021  Show citation

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Řiháček J, Peterková E, Císařová M. Improving Rotary Draw Bending Process by Changing a Geometry of the Pressure Bar. Manufacturing Technology. 2021;21(5):668-681. doi: 10.21062/mft.2021.081.
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