A New Forming Strategy to Realise Parts Designed for Deep-drawing by Incremental CNC Sheet Forming

2005 ◽  
Vol 76 (2-3) ◽  
pp. 160-166 ◽  
Author(s):  
Gerhard Hirt ◽  
Jochen Ames ◽  
Markus Bambach
Keyword(s):  
Deep Drawing ◽  
Sheet Forming ◽  
Forming Strategy

Experimental Study of the Small Lubrication Holes on the Die Shoulder on the Formability in Cylindrical Cup Deep-Drawing

2010 ◽  
Vol 37-38 ◽  
pp. 428-431
Author(s):  
Yu Qing Shi
Keyword(s):  
Deep Drawing ◽  
Mechanical Characteristics ◽  
Experimental Methods ◽  
Sheet Forming ◽  
Drawing Process ◽  
Forming Process ◽  
Deep Drawing Process ◽  
Forming Quality ◽  
Forming Technology ◽  
Cylindrical Cup

Wrinkling and tearing are major defects that usually occur in the deep-drawing process. This study presents a new sheet forming technology, together with machining small lubrication holes on the die shoulder. Deep drawing process of cylindrical cups with flange is investigated. Mechanical characteristics of die shoulder with small lubrication holes in deep drawing are analyzed. Numerical simulation and experimental methods are used to determine the influence on formability of machining small lubrication holes on the die shoulder. The results show that this new sheet forming process can improve formability and forming quality.

Experimental Investigations and Numerical Analysis for Improving Knowledge of Incremental Sheet Forming Process for Sheet Metal Parts

2009 ◽  
Vol 623 ◽  
pp. 37-48 ◽  
Author(s):  
Steeve Dejardin ◽  
Jean Claude Gelin ◽  
Sebastien Thibaud
Keyword(s):  
Sheet Metal ◽  
Incremental Forming ◽  
Single Point ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Experimental Investigations ◽  
Metal Parts ◽  
Sheet Metal Parts ◽  
Forming Strategy ◽  
Set Up

The paper is related to the analysis of shape distortions and springback effects arising in Single Point Incremental Forming. An experimental set up has been designed and manufactured to carry single point incremental forming on small size sheet metal parts. The experimental set up is mounted on 3-axes CNC milling machine tool and the forming tool is attached and move with the spindle. Experiments have been carried out on sheet metal parts to obtain tronconical shapes. The forming strategy associated to the movement of the forming tool has been also investigated. The experiments indicate that shape distortions arising in the corners of the tronconical shape are clearly related to forming strategy. The springback of rings cut in the tronconical parts have been also investigated. It is shown that positive or negative springback could be also related to forming strategy. In order to enhance experimental investigations, Finite Element simulations of the incremental sheet forming have been performed. Results obtained from the simulations prove that if boundary conditions and forming strategy carefully are taking into account, the finite elements results are in good agreement with experiments. So it is then possible to use FEM as a design tool for incremental sheet forming.

Ductile Failure Modelling in AA5182 Aluminium Alloy Sheet Forming

2013 ◽  
Vol 554-557 ◽  
pp. 47-62
Author(s):  
Holger Aretz ◽  
Stefan Keller ◽  
Olaf Engler ◽  
Henk Jan Brinkman
Keyword(s):  
Aluminium Alloy ◽  
Deep Drawing ◽  
Ductile Failure ◽  
Sheet Forming ◽  
Alloy Sheet ◽  
Failure Model ◽  
R Value ◽  
Experimental Findings

A modular ductile failure model is presented and applied to the forming of an AA5182 aluminium alloy sheet. A detailed description of the failure model and its calibration is provided. The final application of the calibrated failure model to the deep drawing of a cruciform cup reveals a good correlation with the experimental findings. Finally, a study on the influence of the r-value on formability is conducted.

Learning Activities through Academic Papers Focused on Forming Processes

2017 ◽  
Vol 903 ◽  
pp. 70-75
Author(s):  
Rosario Domingo ◽  
Marta María Marín ◽  
Beatriz de Agustina
Keyword(s):  
Research And Development ◽  
Technological Innovation ◽  
Deep Drawing ◽  
Sheet Forming ◽  
Learning Activities ◽  
Scientific Journals ◽  
Bulk Deformation ◽  
Master Degree ◽  
Learning Tasks ◽  
Manufacturing Engineering

This work analyses the learning tasks, related to forming processes, realized by students of a Master degree focused on Manufacturing Engineering. The forming processes include bulk deformation and sheet forming. The objective of these activities is to identify if these practices are linked to research and development or technological innovation. The students must select works from database of international scientific journals and analyze the contents. The results show that the students have identified 62 papers from 21 different journals and of authors from 17 countries; mostly traditional processes (bending, extrusion, deep-drawing, mainly) have been chosen and studied, recognizing important advances in them; moreover the learning tasks have contributed to the acquisition the basic, general and specific competences.

scholarly journals Studying Formability Limits By Combining Conventional and Incremental Sheet Forming Process

2021 ◽  
Vol 34 (1) ◽  
Author(s):  
Fabio Andre Lora ◽  
Daniel Fritzen ◽  
Ricardo Alves de Sousa ◽  
Lirio Schaffer
Keyword(s):  
Numerical Simulation ◽  
Deep Drawing ◽  
Sheet Forming ◽  
Measured Data ◽  
Incremental Sheet Forming ◽  
Forming Process ◽  
Strain Evolution ◽  
Strain Paths ◽  
Incremental Process

AbstractIn this work it is assessed the potential of combining conventional and incremental sheet forming processes in a same sheet of metal. This so-called hybrid forming approach is performed through the manufacture of a pre-forming by conventional forming, followed by incremental sheet forming. The main objective is analyzing strain evolution. The pre-forming induced in the conventional forming stage will determine the strain paths, directly influencing the strains produced by the incremental process. To conduct the study, in the conventional processes, strains were imposed in three different ways with distinct true strains. At the incremental stage, the pyramid strategy was adopted with different wall slopes. From the experiments, the true strains and the final geometries were analyzed. Numerical simulation was also employed for the sake of comparison and correlation with the measured data. It could be observed that single-stretch pre-strain was directly proportional to the maximum incremental strains achieved, whereas samples subjected to biaxial pre-strain influenced the formability according to the degree of pre-strain applied. Pre-strain driven by the prior deep-drawing operation did not result, in this particular geometry, in increased formability.

scholarly journals Design and manufacturing of a fixing device for incremental sheet forming process

2018 ◽  
Vol 178 ◽  
pp. 02004 ◽  
Author(s):  
Daniel Nasulea ◽  
Gheorghe Oancea
Keyword(s):  
Sheet Metal ◽  
Deep Drawing ◽  
Incremental Forming ◽  
Single Point ◽  
Fem Simulation ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Single Point Incremental Forming ◽  
Forming Process ◽  
Design And Manufacturing

In incremental sheet forming processes, the expensive dedicated tool are avoided and replaced with a cheap and simple fixing device which support the sheet metal blanks. The current paper presents how a fixing device used for single point incremental forming device is designed, FEM simulated and manufactured. The fixing device can be used for parts with a cone frustum and pyramidal frustum made of DC05 deep drawing steel. The forces developed in the process and the device displacements were estimated using FEM simulation. The device components were manufactured using a CNC machines and the physical assembly is also presented in the paper.

Simulation Analysis on the Deep Drawing Property of Brake Chamber Shell

2012 ◽  
Vol 502 ◽  
pp. 149-153
Author(s):  
Cheng Ge Wu ◽  
Wei Li ◽  
Shao Fu Shan ◽  
Qiang Han Fang ◽  
Kang Pei Zhao ◽  
...  
Keyword(s):  
Deep Drawing ◽  
Simulation Analysis ◽  
High Reliability ◽  
Sheet Forming ◽  
Brake System ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Fem Method ◽  
Simulation Results ◽  
High Consistency

Brake chamber shell is an important part in brake system, and it is produced by twice deep drawing process. This paper adopts the DYNAFORM software, simulate drawing process of brake chamber shell by using FEM method, and make a comparison with the actual production. The result shows that there is a high consistency between the simulation results and semifinished products produced by twice deep drawing process, meanwhile, analysis results of Dynaform sheet forming are accurate with high reliability.

Sign in / Sign up

Export Citation Format

Share Document