This paper proposes an Intelligent Process Model (IPM), founded on the concept of data mining, for predicting springback in the context of sheet metal forming, in particular, Single Point Incremental Forming (SPIF). A limitation with the SPIF process is that the application of the process results in geometric deviations, which means that the resulting shape is not necessarily the desired shape....

Sheet-metal forming is one of the most important manufacturing processes in automotive industry. This study proposes a multiobjective optimisation scheme that controls both sheet-metal formability and springback. First, mechanical properties DP590 steel were characterised to obtain parameters limit diagram (FLD) DP590. Then, FLD, thinning rate, average springback selected as quality evaluation ...

With a view to reducing the springback and twist of PEEK during incremental forming process, ultrasonic vibration is introduced into polymer thermal single-point process (SPIF). In this study, effects temperature on formed parts are investigated. Several modified tool trajectories developed, influence trajectory also studied. Finally, microstructures analyzed by XRD. The results show that incre...

The principle of this process is shown in Figure 1. Only one die (the stretch-block) is needed, which contains the shape of the part. The sheet, clamped with two gripper jaws, is formed around the stretch-block, when the grippers move along the given trajectories. Accurately shaped products can be obtained with minimal springback, when stretch deformation is added to the bending deformation of ...

The forming defects of parts mainly include fracture, springback, thermal expansion, and rough surface during electric hot incremental forming, in which the springback expansion directly affects dimensional accuracy parts. In this paper, combined optimization process parameters unsupported distances was proposed to control sheet process. predictive model major errors established through respons...

A simplified (one step) method called “inverse approach” (IA) for the numerical analysis of the stamping process has been continuously developed by the authors since the end of the eighties. In the present paper we recall the main finite element formulation aspects, for an efficient estimation of the large elastoplastic strains encountered in deep drawing operations. The capabilities of the cod...

The concept of shape-manifold is applied here to the optimization of a deep drawn blank considering parameterized tool geometries. By adopting this concept, a realistic post-springback shape of the blank closest to a given ideal target shape is obtained. The global approach is fully automated, from the generation of the tool geometries, to the identification of the optimized design parameters. ...

Springback is considered as one of the most common problems in metal forming processes, which poses an inaccuracy product angle during assembling parts. The estimation springback difficult to predict for formed parts since it depends on many factors such mechanical properties, sheet thickness, and die angle. In this work, experimental investigation drawbead different material thicknesses use lu...