Evaluation of formability for aa5052 aa6063 and aa7475 during single and multi point incremental sheet metal forming processes

Abstract

Conventionally a sheet metal component is manufactured with the help of dies and punches which are very costly Because of the high cost the conventional manufacturing method is adequate only for mass production Among the various methods developed over the years incremental forming process seems to be promising technology for sheet metal forming Incremental Sheet Forming ISF plays an important role in aerospace automotive and biomedical industries due to its capability to manufacture complex shapes which utilizes a simple tool In Single Point Incremental Forming SPIF and Multi Point Incremental Forming MPIF the blank is fixed firmly with the help of fixture The forming tool in the machine spindle moves along the prescribed path and deforms the blank incrementally into the required shape The tool movement can be controlled by three axes CNC vertical milling machine The tool moves along the pre defined path with step by step incremental in vertical direction until it achieved the desired shape The objective is to maximize the wall angleWA and sum of strain SOS and to minimize the surface roughness SR and processing timeT during incremental forming of AA5052 AA6063 and AA747 newline