Springback is a phenomenon that frequently occurs in bending processes and is detrimental to the manufacturing industry. Typical disadvantages include the incompatibility of the product's final dimensions and the need for additional processing. Indeed, these must also incur additional expenses and result in the inefficient production process flow. Consequently, the analysis of springback is attracted to studies to obtain a bending product that meets expectations. This study examined the springback phenomena on 60 mm x 19 mm x 2 mm aluminium alloy 6063-T5 materials using V-bending processes and approximately 40°, 50°, and 60° punch angles. This study also utilized the die opening and bending force variables, 35 mm and 2500 N, respectively. It was anticipated that these procedures would produce a 6063-T5 aluminium alloy with a bending angle of approximately 90 degrees. The results indicate that the bending angles produced by these processes with the various punch angles are 91.50°, 91.42°, and 91.67°, respectively. It indicates that the excess bending angle was referred to as springback. Consequently, a bending angle of approximately 90° can be obtained on aluminium alloy 6063-T5 using V-bending processes with the set parameters of die opening in 35 mm and bending force in 2500 N, in addition to the punch angle that was reduced based on the known springback value. In addition, it is anticipated that this result will contribute to the development of the manufacturing industry, particularly the aluminium alloy 6063-T5 materials industry, or serve as a reference for other relevant studies

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This study discussed the evaluation of bending process using high-strength SUS 304 (HS-SUS-304) material of high degree tolerances, and its application in a safe, strongbox, and strongroom protection system. This bending process is one of the several material-forming techniques widely used in the manufacturing industry. Moreover, incorrectly selected parameters such as the V-die punch radius, the angle of V-die bending, and the angle of machine parameters often leads to material failure and wrong final dimensions. The V-bending process was chosen for evaluation because it exhibits significant spring-back effect and has a wide range of industrial applications. The experimental method utilized HS-SUS 304 with a thickness of 3.0 mm that meets the ASTM A-240 requirement, and the input parameters used for V-die angle as well as tip punch radius were chosen in order to achieve the 90o ± 0.5o, and 50o ± 0.5o degrees of the workpieces. The V-die angle of 89o was selected with a tip punch radius of 1.0 mm and 1.2 mm. Furthermore, the spring-back effect was analyzed and evaluated to meet the standard angle requirement, and the results showed that the settings on the bending machine need to be adjusted to achieve angles within tolerances of degrees. It was observed that when the process bend angles on the machine was set at 93.75o and 52.83o with 1.0 mm V-dies tip punch radius, the spring-back factor results produce an average of 0.9609, 0.9618, and 0.9600. Meanwhile, this average increased to 0.9634, 0.9641, and 0.9655, by using 1.2 mm.