Research Status of High-Pressure Water Jet Incremental Sheet Metal Forming and Research on a New Method of the Straight-Walled Sheet Metal Part Forming

2012 ◽  
Vol 217-219 ◽  
pp. 2093-2096
Author(s):  
Ling Yun Zhang ◽  
Peng Yuan
Keyword(s):  
High Pressure ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Water Jet ◽  
Sheet Metal Part ◽  
Metal Part ◽  
Incremental Sheet Metal Forming ◽  
Pressure Water ◽  
High Pressure Water Jet

The basic theory, process characteristics and advantages of high-pressure water jet incremental sheet metal forming were introduced. International research progresses in this field were summarized. The difficulty of straight-walled sheet metal part forming was analyzed, and a new method was researched, the result shows that the solution by regulating the contact angle which between sheet metal and water jet is practicable. The future developments were prospected.

System and Design of Five-Axis Water Jet Incremental Sheet Metal Forming Machine Tool

2013 ◽  
Vol 365-366 ◽  
pp. 926-931
Author(s):  
Hao Li ◽  
Jiu Hua Li ◽  
Kai He ◽  
Ru Xu Du
Keyword(s):  
High Pressure ◽  
Machine Tool ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Degrees Of Freedom ◽  
Water Jet ◽  
Incremental Sheet Metal Forming ◽  
Pressure Water ◽  
High Pressure Water Jet ◽  
Five Axis

High pressure water jet flexible incremental sheet metal forming (HPWJFISMF), which is a new kind of sheet mental dieless forming with good flexibility, is quite suitable for the production of multi-varieties and small batch products and trial-manufacture of new products. We have designed a five-axis forming machine tool with three translational degrees of freedom of workbench and two rotational degrees of freedom of the nozzle .in order to study the technology of HPWJFISMF. This paper gives a detailed introduction for the hardware structure and software system of machine tool of HPWJFISMF, which adopts an open control system with PC and motion controller. The control system of HPWJFISMF is designed on the platform of VC++6.0 in object-oriented way. The working performance stability of the machine tool has been verified by machining experiments, which offers a good platform for the study of high pressure water jet forming.

scholarly journals Modelling real contact areas caused by material straining effects in sheet metal forming simulation

2021 ◽  
Author(s):  
Peter Essig ◽  
Mathias Liewald ◽  
Maximilian Burkart ◽  
Maxim Beck
Keyword(s):  
Sheet Metal ◽  
Surface Pressure ◽  
Sheet Metal Forming ◽  
Deep Drawing ◽  
Metal Forming ◽  
Sheet Metal Part ◽  
Metal Part ◽  
Forming Simulation ◽  
Contact Areas ◽  
Surface Pressure Distribution

Shortened product development processes in automotive industry combined with the upcoming lack of experts do challenge sheet metal part production fundamentally. Tryout time and manufacturing costs of large forming dies today are significantly influenced by their digitally supported engineering. The forming process by such tools is beside other influences is affected by elastic deformations of forming dies and press structure as well as contact areas between die and sheet metal part. In deep drawing such contact areas are influenced by the blank properties and the flange behavior in terms of thickening and thinning. Recent developments in sheet metal forming simulation do consider advanced friction models and structural modeling of die and press components improving simulation accuracy. Nevertheless thinning or thickening of sheet metal results into localized surface pressure distribution during deep drawing. For this reason, it is not sufficient to use the currently common practice of homogeneous surface pressure distribution in sheet metal forming simulation. In this respect, this paper presents a numerical approach for consideration of straining effects in the sheet metal part during forming operation. For this purpose, a systematic process improvement was developed in this paper to identify contact areas via a numeric simulation parameter. Validating the numerical investigation, a rectangle cup die is used, considering major strain. The main results of this contribution for that reason show how simulated contact areas can be estimated by reverse engineering of real forming parts. Hereby straining based contact areas lead to a novel contact area design in process planning, resulting in efficient die tryout.

The Experiment Study of Water Jet Incremental Sheet Metal Forming

2011 ◽  
Vol 230-232 ◽  
pp. 1010-1013
Author(s):  
Xiao Min Cheng ◽  
Lin Zhou ◽  
Liang Wang ◽  
Gen Zhou
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Thick Target ◽  
Water Jet ◽  
Target Distance ◽  
Technological Parameters ◽  
Pressure System ◽  
Influence Of Water ◽  
Incremental Sheet Metal Forming

For the manufacture of panel parts, incremental sheet metal forming is significant in reality. This study put forward a method of incremental sheet metal forming: High-handed water jet with constant pressure and speed that caused by high pressure system acts on sheet metal and makes it out of shape, following transmutation superposition the requisite parts can be made. Based on this theory, a system of incremental sheet metal forming by using water jet is designed. At the same time, a forming experiment device is developed which is used to test the influence of water jet pressure, sheet metal thick, target distance to forming result. Finally, the optimized technological parameters of forming will be obtained. Within the work range, the higher pressure of water jet is, the more obvious forming result will be, and a great target distance will make forming result worse, besides sheet metal thick can make a difference of it. If sheet metal thick is invariable, there is interaction among pressure, target distance and feed velocity, so they influence forming result together.

Introduction of laminated supporting tools in water jet incremental sheet metal forming

2007 ◽  
Vol 37 (5-6) ◽  
pp. 496-503 ◽  
Author(s):  
Bostjan Jurisevic ◽  
Viktor Sajn ◽  
Franc Kosel ◽  
Mihael Junkar
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Water Jet ◽  
Incremental Sheet Metal Forming

A Study on Dieless Incremental Sheet Metal Forming Using Water Jet Technology

2011 ◽  
Vol 189-193 ◽  
pp. 795-800 ◽  
Author(s):  
He Kai ◽  
Jiu Hua Li ◽  
Qun Luo ◽  
He Mao ◽  
Ru Xu Du
Keyword(s):  
Simulation Model ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Fluid Structure Interaction ◽  
Water Jet ◽  
Structure Interaction ◽  
Incremental Sheet Metal Forming ◽  
Interaction Simulation ◽  
The Relationship

A new method of sheet metal forming, water jet incremental sheet metal forming (WJISMF) is presented. We give the schematic illustration of WJISMF system, which includes high pressure system, NC machine, control system, water recycle system, and some attachments, and then the virtual prototype of the system is designed. To predict the whole deformation process, some simulations are carried out. Firstly, fluid structure interaction simulation for WJISMF is performed. The water jet is modeled and simulated with a computational fluid dynamics (CFD) approach, while for the material flow in the workpiece a finite element analysis (FEA) is used. Secondly, the relationship between the workpiece material deformation and nozzle diameter, and the relationship between deformation and water pressure are presented. Thirdly, the fluid structure interaction simulation model is simplified to the structure simulation model, by adopting shell 181 element and using a pressure acting on the workpiece directly instead of the CFD model. Finally, a simulation for forming a cone box is done using the simplified model. The simulation provides a powerful rationale for the practical application of WJISMF.

Continuous Sheet Metal Forming - A Linearly Incremental Forming Method for Manufacturing 3D Surface Parts

2012 ◽  
Vol 486 ◽  
pp. 334-339
Author(s):  
Zhong Yi Cai ◽  
Zhi Qing Hu ◽  
Ying Wu Lan ◽  
Ming Zhe Li
Keyword(s):  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Three Dimensional ◽  
Sheet Metal Part ◽  
Metal Part ◽  
Forming Process ◽  
Downward Displacement ◽  
Flexible Roll ◽  
Continuous Sheet

In order to manufacture a three dimensional sheet metal part effectively, a continuous sheet metal forming process (CSMF) based on flexible roll bending has been proposed and developed. This paper mainly focuses on the fundamental aspects of the process, the principle of CSMF is introduced and the method to estimate the downward displacement of upper roll based on the desired curvature of the deformed sheet metal is presented. The variation of the upper rolls downward displacement with the desired bend radius is shown in graphically. The smoothness of the CSMF parts was measured and analyzed. In the results, it is shown that a three-dimensional sheet metal part can be formed without defects and the formed surfaces are in good agreement with the target shapes.

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