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Springback Reduction by Using Tool Rollers

  • Chetan P. NikhareEmail author
Regular Paper
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Abstract

Springback is defined as a geometric defect, which occurs due to elastic recovery in the part after it has been unloaded. This challenge is most common in lightweight alloys as well as in advanced high strength steels. The materials, which exhibit lower elastic modulus or higher tensile strength, would be more prone to springback. In this paper, a novel patented technique is introduced to eliminate the springback by using rollers in the forming tool. It was found that due to the rotation of rollers in the tool during forming, reduces the stress in the part and, thus reduces the springback.

Keywords

Springback Channel forming Stress state Roller Numerical analysis 

Abbreviations

YS

Yield Strength, MPa

TS

Tensile Strength, MPa

%EL

Percentage Elongation

K

Strength Coefficient, MPa

n

Strain Hardening Exponent

40CCW

40 Roller rotations in counter clockwise direction

80CCW

80 Roller rotations in counter clockwise direction

40CW

40 Roller rotations in clockwise direction

Notes

Acknowledgements

Author would like to thank Penn State Erie, the Behrend College for undergraduate research scholarship, open lab research facilities and resources and Mr. Glenn Craig for tool manufacturing and specimen fabrication.

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Copyright information

© Korean Society for Precision Engineering 2019

Authors and Affiliations

  1. 1.Mechanical Engineering, The Behrend CollegeThe Pennsylvania State UniversityErieUSA

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