Paper Details

There are many forming processes, being used in the global market for a long time. Many conventional sheetforming processes are tedious, time taking in design and development of punches, dies and costlier. In order to solvethese problems single point incremental forming process is introduced which is modern method for sheet forming forprototypes, customized parts and small size batch products.The SPIF (single point incremental forming) process is aflexible process which does not need dedicated tooling and dies. This paper presents the design of fixture arrangement inCATIA, static structural analysis is done using Ansys 14.5 to determine the deformations produced in the fixture duringforming. The designed fixture arrangement is fabricated using 3D printing process. Here the deformed tools withhemispherical shapes are used. Aluminum alloy 6061 sheet of 0.5 mm thickness is used for current experiment study.Screen printing technique with circular grid marking is used for measuring strains. These strains are used forconstructing Forming limit curves of aluminum alloy. Entire work is done by forming cone shape using CNC millingmachine for measuring strains in the final geometry. DOE has been used to study the effect of forming parameters suchas tool diameter, step size, feed rate and spindle speed on forming limit curves.Single point incremental forming processis used to form a cone shape and deformed circles on the sheet blank will measure the major and minor axis lengths.Using these values major and minor strains are calculated and FLC curves are drawn to study the behavior of sheetblanks.Finally comparison is done for all 27 experimental runs

G.Janardhan Reddy, B.Purushotham Naik, K.Pavankumar Reddy, “Development of Single Point Incremental FormingProcess on CNC Milling Machine Using 3D Printed Fixture Arrangment”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 9, pp. 296-301, September 2017.