Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Forces analysis of single point incremental sheet metal forming by variation process parameters
Submission Author:
Jordana Ferreira Rezio , GO , Brazil
Co-Authors:
Jordana Ferreira Rezio, Larissa Oliveira, Ecio Duarte, Paulo Vinicius Resende, Davi Judá De Souza Fraga
Presenter: Davi Judá De Souza Fraga
doi://10.26678/ABCM.COBEM2023.COB2023-1798
Abstract
The study of the manufacturing process is motivated by the growing need of industries for higher levels of accuracy and precision for their products in the shortest time. For this reason, the incremental sheet forming process has been used for produced small batch sizes that do not require the jigs or dies. This type of the forming processes highlights by reduced cost of manufacturing and is more versatile and flexible. The incremental sheet forming showed as an important technique in the maintenance and prototype sector since it eliminates the need for a die forming or specific tools. Due to its ease and low cost, this process stands out in the manufacture of parts, example at aeronautical sector. This work aims to analyze the forming forces during the forming of galvanized steel trouble single point incremental sheet forming (SPIF) due to variation of three parameters process: spindle speed tool, feed rate, step down. For the experiments was used a dynamometer, and the forces were measured in xyz axis. The material used was a galvanized steel sheet with 1,25 mm of thickness fixed in CNC milling machine. The single point increment was performed by a rotating cylindrical tool. The impacts of the interactions of these conditions were verified using the technique of full factorial design of the experiment (DOE) followed by the analysis of variance (ANOVA), allowing to plot the force variation graph. Finally, it has been concluded that galvanized steel presents good formability for the tested parameters. Furthermore, the range of forming mean force on the experiments ranged from 407 N to 1495 N. When doubling the spindle speed tool, regardless of the increase or reduction of the step down, the forming forces decrease in all directions. The force signal (Fx, Fy, Fz) was growing until the stability due the increased progressive contact area between the tool and the sheet metal. The most influence process parameter at mean forces was feed rate. For future works, expects to analyze the surface quality of the part and the relationship with the contact frequency obtained by the forming force signals.
Keywords
Sheet Metal Forming, Single point incremental stamping, Galvanized steel, Forming forces
