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  • Author: Gabriela Petruța Rusu x
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Abstract

Incremental forming process is a relatively new process among researchers, which is yet to be implemented in automotive and aerospace industries. The researchers are studying various process strategies and methods to improve the geometrical accuracy of the parts obtained by incremental forming, because the geometry of the parts is one of the key factors holding back the process industrialization. One good method to investigate the benefits of a process strategy is by means of numerical analysis, from which the results obtained can confirm or disprove the gains of the researched strategy. The aim of this paper is to present the advantages of using a fluid under pressure as a supporting die instead of using a conventional fixed backing plate for the single point incremental forming process.

Abstract

Due to the fact that the requirements of the industry aim to improve the dynamics, the safety and the comfort during the use of the vehicles, it is recommended to use the finite element method for component quality optimization. The purpose of this paper is to provide an overview of the current state of analysis through the finite element method of the crimping process used to assemble air springs produced in the automotive industry. Starting from the prototype of an air spring, the researches are focused on the study of the assembly of the piston with the bellow and the crimping ring through the crimping process. After analysis with the finite element method and static tests, improvements were made to the piston, the results of the tests revealing an improvement as opposed the original variant of the piston.

Abstract

Single point incremental forming (SPIF) is a cold metal forming process, which is well known among researchers in the last years. This process differentiates itself from other classic cold forming processes due to the relatively low number of elements involved in the process, being suitable for small batches and prototypes parts. Taking advantage of their high flexibility, but at the same time losing the rigidity of CNC machines, industrial robots can be used in the incremental forming process, a process known as “roboforming”. One area of interest among researchers is represented by the forces which take place during the process, because they dictate whether an equipment is suitable or not in regards with material strenght. The aim of this paper is to investigate the influence of different toolpaths over the forces measured in SPIF which took place when DC04 sheet metal blanks were deformed with the help of KUKA KR210 robot.