The Effect of Blankholder Pressure on the Amount of Springback in the U-Draw Bending Process
Springback in sheet metal forming processes is a phenomenon that makes it difficult to obtain products with the desired geometry. This paper presents the results of research on the effect of the blankholder pressure on the elastic deformations of sheets during the forming of strip specimens (50 mm w...
Saved in:
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
The Publishing House of the Rzeszow University of Technology
2024-12-01
|
| Series: | Advances in Mechanical and Materials Engineering |
| Subjects: | |
| Online Access: | https://journals.prz.edu.pl/amme/article/view/1826 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | Springback in sheet metal forming processes is a phenomenon that makes it difficult to obtain products with the desired geometry. This paper presents the results of research on the effect of the blankholder pressure on the elastic deformations of sheets during the forming of strip specimens (50 mm wide and 400 mm long) into U-shaped components. A special die was developed for the forming of sheet metals under variable blankholder pressure conditions in the range between 1 and 3 MPa. Three grades of sheets with significantly different properties were used as the research material: 6063 aluminium alloy, S235JR structural steel and X46Cr13 stainless steel. The research was conducted under dry friction conditions. The elastic deformations of the sheet metal in the U-draw bending process were of a different character in the punch radius and die radius areas. In the area of the punch edge, the springback coefficient decreased with increasing blankholder pressure. This relationship was observed for all the tested materials. In the area of the die edge, a decrease in the value of the bending angle was generally observed in relation to the bending angle in the loaded state. |
|---|---|
| ISSN: | 2956-4794 |