Fundamental Studies On The Incremental Sheet Metal Forming Technique

Incremental sheet forming is a flexible and versatile process with a promising future in the batch production and prototyping sectors.

Fundamental studies on the incremental sheet metal forming technique.

The principle of nc incremental sheet metal forming process as well as the experiment of cone forming are presented. Because the deformation of sheet metal only occurs around the tool head and the deformed region is subjected to stretch deformation the deformed region of sheet metal thins and surface area increases. Generally the sheet is formed by a round tipped tool typically 5 to 20mm in diameter. However studies have shown that it can be applied to polymer and composite sheets too.

Also conventional techniques such as stretching and deep drawing processes were simulated by a commercial fem package for the purpose of comparison in the aspect of forming capabilities. Incremental sheet forming or isf also known as single point forming is a sheet metal forming technique where a sheet is formed into the final workpiece by a series of small incremental deformations however studies have shown that it can be applied to polymer and composite sheets too. The tool which can be attached to a cnc machine a robot arm or similar indents into the sheet by about 1 mm and follows a contour for the desired part. With this technique the forming limit curve flc appears in a different pattern revealing an enhanced formability compared to conventional forming techniques.

Summary single point incremental forming spif is a sheet metal forming technique that is gradually evolving towards industrial applicability. Fundamental studies on the incremental sheet metal forming technique. In this paper inconel 718 a material that has extensive use in aircraft engines is considered for experimental work to obtain the optimum. Incremental sheet forming is a sheet metal forming technique where a sheet is formed into the final workpiece by a series of small incremental deformations.

In the sheet metal cnc incremental forming process the forming tool moves around the outline of the sheet metal part along the predefined toolpath and extrudes the sheet metal point by point and. Generally the sheet is formed by a round tipped tool typically 5 to 20mm in diameter. Fundamental investigations of the incremental sheet metal forming technique were performed in the present study. The idea of incremental forming technique has been investigated for production of sheet metal components.