Experimental and Numerical Investigation of Single Point Incremental Forming of Aluminium Alloy Foils
AbstractSingle Point Incremental Forming (SPIF) is a flexible process to manufacture sheet metal parts that is well adapted and profitable for prototypes or small batch production. Compared to traditional sheet forming technologies this relatively slow process can be used in different applications in automotive and aircraft industries, in architecture engineering and in medical aids manufacturing. In this paper indirectly obtained axial forming force on SPIF of variable wall angle geometry were studied under different process parameters. The estimation of the forces on AlMn1Mg1 sheets with 0.22 mm initial thickness is performed by continuous monitoring of servo motor currents. The deformation states of the formed parts were analysed using the ARGUS optical strain measurement system of GOM, while the roughness measurements were carried out by a System of Mitutoyo. Some initial Finite Element Analysis simulations and a crack monitoring method together with an interaction plot of forming speed, incremental depth, tool diameter and lubrication were also reported.
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