Experimental investigation of effect of process parameters on springback in v bending process

Dc01 quality sheet metal parts which were shaped by bending are commonly used in white goods, furniture, kitchen, a variety of household goods and in various industries, particularly the automotive industry. the most important shaping flaw of the bended parts is spring-back. in this study, the effects of holding times (0 s, 10 s, 20 s and 40 s), bending angles (15°, 30°, 45°, 60°, 75° and 90°) and punch radii (0 mm, 2 mm, 4 mm and 6 mm) on spring-back while v bending were investigated. at the end of the experiments the following results were observed; spring-back angles decreased 0.18 degrees on average while the holding times were increasing 10 seconds, spring- back angles increased 0.44 degrees on average while bending angles were increasing 15 degrees. furthermore, an increase of 2 millimeters in punch radii resulted in an increase in spring-back angles (0.27 degrees on average).