Springback Compensation of Sheet Metal Bending Process Based on DOE & ANN

2008 ◽  
Vol 32 (11) ◽  
pp. 990-996 ◽  
Author(s):  
Jae-Hong An ◽  
Dae-Cheol Ko ◽  
Chan-Joo Lee ◽  
Byung-Min Kim
Keyword(s):  
Sheet Metal ◽  
Springback Compensation ◽  
Bending Process ◽  
Sheet Metal Bending

A New Springback Compensation Method for Sheet Metal Bending Based on Curvature Correction

2010 ◽  
Vol 97-101 ◽  
pp. 130-134 ◽  
Author(s):  
Juan Liao ◽  
Chi Zhou ◽  
Feng Ruan ◽  
Yin Zhu
Keyword(s):  
Sheet Metal ◽  
Analytical Calculation ◽  
Compensation Method ◽  
Two Dimensional ◽  
Experiment Data ◽  
Springback Compensation ◽  
Curvature Correction ◽  
Shaped Part ◽  
Tool Shape ◽  
Sheet Metal Bending

The dimensional inaccuracy caused by springback is a major problem for most stamping applications. One of the most promising ways to solve this problem is to compensate it by means of appropriate tool shape modifications. In this paper, a new springback compensation method is introduced. A coefficient of curvature correction, which reflects the deviation of the experiment data and the analytical calculation data, is also proposed to redesign the tooling shape. This method was applied to a two-dimensional wavy-shaped part forming case for verification. The experiment results demonstrated that this method is efficient.

scholarly journals Hydraulic Sheet Metal Bending System

2020 ◽  
pp. 251-257
Keyword(s):  
Sheet Metal ◽  
Space Constraint ◽  
Metal Plate ◽  
Spring Back ◽  
Constraint Factors ◽  
Bending Process ◽  
Punch Radius ◽  
Human Effort ◽  
Sheet Metal Bending ◽  
Manufacturing Methods

Due to increasing Globalization it is very much essential for manufacturers to produce goods having highest reliability and in required time. This is achieved by using various manufacturing methods. The transformers which are currently assembled for Welding Machines require hammering of the extruded Metal plate. This method requires large Human effort in form of Hammering. Hence the safety of the operator is also at a risk. The main purpose of this system is to automate the bending process so that almost negligible amount of Human Effort is required and the process becomes completely safe. This paper concentrates on the basic factors which should be considered while designing bending machine especially when sheet metal can’t be bent separately and having space constraint. Factors considered are force required, punch radius, reduction of spring back,

Application of Incremental Forming in Sheet Metal Bending Process

2014 ◽  
Vol 900 ◽  
pp. 561-564 ◽  
Author(s):  
Xiao Bing Dang ◽  
Kai He ◽  
Shu Guo Wei ◽  
Jiu Hua Li ◽  
Ru Xu Du
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Motion Control ◽  
Sheet Metal ◽  
Incremental Forming ◽  
Single Point ◽  
Element Analysis ◽  
Motion Control Card ◽  
Bending Process ◽  
Sheet Metal Bending

Based on the thought of incremental forming, a new kind of sheet metal bending process has been described and investigated in this article. The software of the control system for the specific machine is developed combining motion control card and servo motors. Both single point and multi-points bending are taken into consideration from experimental and finite element analysis. Curved sheet and hyperbolic sheet metal are examined through experiments to extend the application for more smoothed and complicated curved sheet metal. The effectiveness of the process to deal with complex curved sheet metal is shown by all the experiments.

Enhanced Semi-Analytical Process Simulation of Air Bending

2005 ◽  
Vol 6-8 ◽  
pp. 729-736 ◽  
Author(s):  
N. Ridane ◽  
D. Jaksic ◽  
Matthias Kleiner ◽  
B. Heller
Keyword(s):  
Sheet Metal ◽  
Process Simulation ◽  
Simulation Software ◽  
Thick Sheet ◽  
Process Data ◽  
Air Bending ◽  
Bending Process ◽  
Sheet Metal Bending ◽  
Punch Displacement ◽  
Analytical Approaches

The air bending process is one of the most widely used process for the manufacturing of sheet metal bending parts made of thin as well as of thick sheet metal. Although the air bending process offers a very high production potential due to its great flexibility, it is associated with certain problems which can negatively influence the shape and dimensional accuracy of the bending parts. Examples for such negative influences are the springback of the material, the batch variations, or the deflections of the bending machine and tools. These differences have to be considered either in the determination of the process parameters or they have to be compensated later on in the manufacturing process itself. A well established approach to calculate process data for forming processes is the use of a process simulation. At the Institute of Forming Technology and Lightweight Construction (IUL) a simulation software called Sheet Metal Bending Simulation (SMBS) has been developed and successfully been tested for the field of sheet metal bending, based on semi-analytical approaches. Although it already provides very satisfactory results in general, disturbances such as material and batch variations as well as the deflections of C-frame, machine table, and press brake ram can still negatively affect the prediction of the punch displacement necessary to achieve a certain bend angle. While material and batch variations cannot properly be considered in a process simulation at present, the afore mentioned influences offer a promising potential for improvements. Therefore, in order to further improve the accuracy of predicted quantities such as punch displacement and bending angle, a new module describing the elastic machine behaviour of press brakes has been developed and successfully been integrated in the process simulation SMBS. Experimental investigations have been carried out on a conventional CNC press brake to verify the efficiency of the newly implemented approach.

Development of a Virtual Machine for the Sheet Metal Bending Process Simulation for Educational Purposes

2011 ◽  
Vol 692 ◽  
pp. 16-23 ◽  
Author(s):  
Pedrofa Fernández ◽  
Braulio Álvarez ◽  
D. Blanco ◽  
E. Cuesta ◽  
Sabino Mateos
Keyword(s):  
Sheet Metal ◽  
Virtual Machine ◽  
Process Simulation ◽  
Graphical Interface ◽  
Metal Part ◽  
The Press ◽  
Bending Process ◽  
Sheet Metal Bending ◽  
Bending Sequence ◽  
Selection Of

In this work the development of a virtual machine for the simulation of the sheet metal bending process is presented. The developed software is based on SolidEdge® as commercial CAD base, and allows the student to design the whole sheet metal part in a 3D environment. The application guides the student during all process, including the selection of the press brake and the tools (dies and punches) by means of a graphical interface. Finally, the bending sequence is introduced and the application simulates the bending process. This way the student can see the problems during the manufacturing process, in particular collisions, that arise from the design of the part, from the tools selected or, in most cases, from the bending sequence. Finally, the student should fix these problems in order to manufacture the part.

Sign in / Sign up

Export Citation Format

Share Document