Author links open overlay panel vedat savas omer secgin. The objective of nonlinear analysis is to define the stressstrain state and strain forces in the process of lid drawing. The manufacturing of deep, cuplike products from thin sheet metal is known as deep drawing. The key process parameters rubber type, rubberdie dimensions, blank diameter and geometrical scaling factor, related to the drawing process are investigated in detail. The objective of this research is to determine the most important. Pdf design and analysis of deep drawing process on. Blankingblanking is the process ofcutting the initial sheet coil stockinto round or shaped flatsrequired for deep drawing. Backgroundscenario openloop and closedloop control systems are two basic types of control systems. The main chalenge of optimization process is to reduce the number of drawing step, so that the final cup has a uniform thickness and therfore the production cost decreased and product life increased.
The schematic diagram of deep drawing is shown below. Rightclick the original analysis tab and select copy rightclick again and select paste. Analysis of elliptical cup drawing process of stainless sheet metal yuungming huang, shiaocheng lu department of mechanical and computeraided engineering, st. Thinning and residual stresses of sheet metal in the deep drawing. It is a finite element analysis based simulation has been done using deform3d for the deep drawing process. Development of a multipass drawing process design system for. A controlled experiment using bales interaction process analysis. One of the primary defects that occurs in deep drawing operations is the wrinkling of sheet metal material, generally in the wall or flange of the part. Deep drawing process, one of sheet metal forming methods, is very useful in industrial field because of its efficiency. The deep drawing process is a forming process which occurs under a combination of tensile and compressive.
Everything from aluminum cans, cookware and kitchen sinks can be customized and created through this process. Deep drawing process is a sheet metal forming process where a punch. The design and control of a deep drawing process depends not only on. Design optimizatio carried out using taguchi design of experiment method. Explore tools to produce your own process diagrams. Design and analysis of a deep drawing and in process.
Our deep drawing process is designed for custom and lead production services for use in highend machinery. Click the select process and material bu on to open the selec on dialog. Experimental analysis can be useful in analyzing the process to determine the process parameters that produce a defect free. Rule based dfm analysis for deep drawing wikipedia. University of technology janmar 2007 objectives this chapter provides fundamental background on processes of drawing of rods, wires and tubes. A blank holder, that surrounds the punch, applies pressure to the entire surface of the blank, except the area under the punch, holding the sheet metal work flat against. In the presented work, the single stage deep drawing process of thin walled, mild steel, conical back plate of radial impeller of blowers is approached by means of a finite element analysis. Defects in metal forming processes and their remedies. Presented contribution deals with force parameters research drawing and blankholding in deepdrawing process of flat bottomed cylindrical cup. Friction in deep drawing technische universiteit eindhoven. Deep drawing deep drawing is one of the most widely used processes in sheet metal forming. Detailed experimental and numerical analysis of a cylindrical. Tube drawing processes analysis of tube drawing residual stress in rod, wire and tubes chapter 5. Deep drawing is one of widely used sheet metal working process in industries to produce cup shaped components at a very high rate.
The flange of the blank undergoes radial drawing stress and tangential compressive stress during the stamping process, which sometimes results in wrinkles. In cold wiredrawing process, which is performed at room temperature, heat is generated because. Dfma stands for design for manufacture and assembly. The limits of the processing window for deep drawing, collected in a deep drawing diagram, are affected by material behavior, process parameters and size effects. This work reports on the initial stages of finite element analysis fea of a deep drawing process. In rolling the crystals get elongated in the rolling direction. Theoretical and experimental analysis of deep drawing. Specifically, if the depth of the item created is equal to or greater than its radius, then the metal forming process can be called deep drawing. Deep drawing depth of drawing is more than diameter of. There are mainly two methods of deep drawing analysis. Deep drawing is a widely used cold sheet metal forming process to draw the sheet metal in forming dye of desirable crosssection using mechanical force of the punch. Pdf analysis of deep drawing process for hemispherical. Blank shape optimization in deep drawing process to minimize earring defect indian j.
The objective of this study is to determine the factors influencing a drawing process. Deep drawing can achieve up to 43% reduction on a metal blank, and multiple successive deep draws can be used to achieve part size or shape requirements. The feasibility of the process is firstly investigated through fe simulations using the commercial software abaqusstandard. Effect of different parameters on deep drawing process for. Analysis of elliptical cup drawing process of stainless.
It is thus a shape transformation process with material retention. A size effect, more specific a density effect, explains the changes in forming behavior of foils with respect to the forming limit, denoted by the limiting drawing ratio. Effects on the deep drawing diagram in micro forming. Numerical simulation and analysis on the deep drawing of lpg bottles. Benefits of deep drawn metals the deep drawing process is especially beneficial when producing high volumes of products, as unit cost decreases as unit count increases. A combination between experimental and finite element analysis fea of deep drawing process was made by colgan and monaghan 4. Bosnia and herzegovina abstract deep drawing is a process for shaping flat sheets into cupshaped articles without fracture or excessive localized thinning. Finite element simulation of single stage deep drawing. The subject of nonlinear analysis is the processed form of cover, which is obtained by the process of plastic processing in the cold condition. Simulation of the drawing process for determining stress distribution in the drawn component for a particular displacement is explained in the presented work. Applying a punch with microridges in multistage deep drawing processes. Experimental analysis can be useful in analyzing the process to determine the process parameters that produce a defect free product, and the analyticalnumerical modeling can be used to model and analyze the process through all stages of deformation. The process is considered deep drawing when the depth of the drawn part exceeds its diameter.
Deep drawing metal parts fabrication american aluminum. Deep drawing, springback, finite element analysis, aa5754o. Numerical simulation and analysis on the deep drawing of. Robust analysis allows for the user to determine the robust process window, in which the best forming conditions considering noise variables are taken into account. In a deep drawing process, a punch pushes a sheet metal blank. Applying a punch with microridges in multistage deep drawing. Mathematical approaches for the calculation of drawing.
A copy of the deep drawing analysis is made and placed on a new tab. We are a leading manufacturer specialized in sheet metal fabrication mainly stamping and welding parts since 1997, we are located in laizhou, shandong, china, 150 kilometres away from qingdao port. Precision tube drawing for biomedical applications tel. Study of earing defect during deep drawing process with. Page 1 of 3 lab draw a process diagram objective in this activity, you will draw a process diagram based on openloop and closedloop processes. Sheet metal forming is a complex process involving geometric, material and. In general, the following rule applies in forming process analysis. This paper reports on the initial stages of a combined experimental and finite element analysis fea of a deep drawing process. The objective of this research is to determine the most important factors influencing a drawing process, utilizing the help of a design of experiments and statistical analysis. Deep drawing deep drawing is defined as a tensilecompressive sheet forming process in which a plane blank is formed into a hollow part open on one side or an open hollow part is formed into another hollow part with a smaller crosssection. Solving deep drawing problems published on january. Addressing stamping robustness is important as potential stamping problems can be solved earlier in the vehicle development cycle saving more time and resources. The design as well as the subsequent analysis of a deep drawing and inprocess electromagnetic sheet metal forming calibration will be described in this paper. Kim and hong 2007 studied circular cup deep drawing of a molybdenum sheet was investigated to.
The deep drawing process is one of our specialties, and is one of the main reasons we are able to create such highprecision parts that are as accurate as possible. Apart from its use in many other sectors, it is applied in the automotive industry for the manufacturing of car body parts. Hani aziz ameen ansys deep drawing process 1 ansys analysis of deep drawing process asst. The deep drawing process unparalleled manufacturing. Najmeddin arab et al4, there are mainly two methods of deep drawing analysis. By making use of finite element analysis and statistical. Rolling defects and remedies pdf these shapes are further processed through hot rolling, forging or extrusion, to. Sdc, design of experiments doe, and stochastic analysis and applications saa.
Publishers pdf, also known as version of record includes final page, issue. Finally, finite element fe analysis and a drawing experiment were carried out to verify the designed processes. In the drawing process, the sheet metal and punch are in close contact with. Deep drawing deep drawing deep drawing is defined as a.