| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Robotic Roller Forming Process and Strategies to Eliminate Geometrical Defect of Edge Waves |
| Author(s) |
Yi Liu, Junying Min, Jianping Lin |
| On-Site Speaker (Planned) |
Yi Liu |
| Abstract Scope |
Robot-based roller forming (RRF) is a new dieless and flexible forming process using a roller mounted on an industrial robot to form sheet metal products by a number of passes with predefined tool paths. In this study, DP590 (dual-phase) steel sheets were initially formed to bent specimens having a right angle by RRF with 3 passes, and edge wave defects were observed at the flange of the DP590 specimens. Finite element analysis was utilized to reproduce the edge waves. According to finite element simulation, longitudinal plastic strains are generated at the flange edges due to excessive tensile and compressive stresses, which results in severe edge waves. Two strategies are introduced to reduce edge waves. One is to optimize forming parameters, and the effects of forming angle increment and moving direction of the roller on longitudinal peak strains at the flange edges were evaluated. Another strategy to reduce edge waves is to apply laser heating in RRF, where the heating spot is always in front of the roller. Experiments demonstrate that laser heating reduces forming forces and edge waves with fewer forming passes. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |