INFLUENCE OF TECHNOLOGICAL PARAMETERS ON MACHINING ACCURACY IN INCREMENTAL FORMING

Abstract

The practise of single-point incremental forming (SPIF) is an advanced flexible manufacturing process initiated during the early 2000s, and since then, extensive research has been conducted in this area. Sheets can be formed incrementally, which not only reduces the amount of energy needed and raw materials, but also allows for multiple products types to be made using the same set of resources. Investigations existed have helped provide a thorough understanding of the macro SPIF deformation mechanism. In the present paper the following aspects have been highlighted: the execution accuracy of the incrementally formed part; determining the part surface roughness; ANOVA analysis of the factors influence on precision and surface roughness. The observed deformations in the shape of the part, can be attributed to the kinematics of the forming process. These deviations are evident in the curvature radius of the part side wall, the presence of a radius of connection between the wall and the bottom of the part, and the dimensional variations indicated by the forming depth. With regards to the surface smoothness, it was noticed that the TiN coated tool yielded the most favourable roughness outcomes. Key words: SPIF, Al 3003 sheet, ANOVA analysis, influence of tehnological parameters, TiN-coated tool.