Design Of Progressive Die Using Fe Analysis
B. Jaya Laxmi et al. / International Journal of Research in ModernEngineering and Emerging TechnologyVol. 2, Issue: 1, April-May : 2014(IJRMEET) ISSN: 2320-6586Design of Progressive Die Using Fe AnalysisB.JAYA LAXMIDepartment of Mechanical EngineeringJ.B. Institute of Engineering and TechnologyY.VIJAYA KUMARProfessor Department of Mechanical EngineeringJ.B. Institute of Engineering and TechnologyHyderabad (India)Abstract:Advanced die achieves a succession of important sheet-metal processes at two or more positionsthrough each media stroke in order to mature an effort piece as the strip stock moves done the die.The main advantage of computer-aided progressive die design and machining is ability to buildprecision tooling in less time and at a lower cost. In this project main steps are Design,manufacturing and FEA analysis. This design is the optimal design. By using this design we canproduce accurate components. First step is manufacturing process. For manufacturing lever tool,manufacturing process is press tool design. Two tools are to be designed i.e. Punching tool andBending tool. Punching tool is a progressive tool which is having five stages, Lancing, blanking,forming.Keywords: ANSYS, Bending tool, Forming, Lancing, blanking, Progressive tool, Punching force,Punching tool1. IntroductionDesign of sheet metal dies is a large division of tool engineering, used in varying degree inmanufacturing industries like automobile, electronic, house hold wares and in furniture. There is nodoubt that accuracy achieved by the new ideas in design and construction applied by the press tooldesigner, coupled latest development made in related fields made more productive, durable andeconomical. These areThe variety in press specification gives the liberty to the designer to think innovative.The latest machining process made the complex designs made easy, like wire cut, EDM, ProfileGrinding.Good operation planningThe Safety Provisions has reduced the accidents and the productivity has been increased.“Simulation Software’s give the designer freedom from taking risky decisions.The use and availability of Standard Elements has reduced the design and development periodThe concept of “Flexible Blank Holder” has given the scope to control the flow of the material ina better way.Hardened and toughened new martial & heat treatment process made the design easy.Four factors are essential contributions to first class presswork areExcellent tool designAccurate tool designKnowledge press setting7 Online International, Reviewed & Indexed Monthly Journalwww.raijmr.comRET Academy for International Journals of Multidisciplinary Research (RAIJMR)
B. Jaya Laxmi et al. / International Journal of Research in ModernEngineering and Emerging TechnologyVol. 2, Issue: 1, April-May : 2014(IJRMEET) ISSN: 2320-65862. Progressive ToolA progressive or follow on die has a series of operations. At ration of the metal in which a hole hadbeen pierced at a previous station. Thus after the first stroke, when only a hole will be punched, eachstroke of the press produces a finished washer.Progressive tool differs from the stage tool by the following aspect, In progressive tool the finalcomponent is obtained by progressing the sheet metal or strip in many stages. In each and every stagethe component will get its shape stage by stage the full shape will be obtained at the final stage.Progressive dies provide an effective way to convert raw coil stock into a finished product withminimal handling. As material feeds from station to station in the die, it progressively works into acompleted part.Fig. 1 Progressive Tool3. Component AnalysisMaterial: S.S-304Thickness: 1 mmTemper grade: HardSupply condition: Strips3.1 PropertiesThese steel have good corrosion resistance.These steel have good ductility.These steel have non-magnetic character.These steel are mainly used for domestic vessel, medical equipment non magnetic character due toNI4. Design calculationComponent DataMaterialDie AssemblyThicknessTemper gradeSupply condition: S.S-304: 1 mm: Hard: StripsComponent DiagramThe EN31B material was chosen for the progressive tool and the design calculations was done as perthe shear force and different sheet metal processes, after completing the design calculations by usingthe PRO/E software the tool was designed.8 Online International, Reviewed & Indexed Monthly Journalwww.raijmr.comRET Academy for International Journals of Multidisciplinary Research (RAIJMR)
B. Jaya Laxmi et al. / International Journal of Research in ModernEngineering and Emerging TechnologyVol. 2, Issue: 1, April-May : 2014(IJRMEET) ISSN: 2320-6586Fig. 2 Parts of dieFig.3 Die BlockFig.4 Punch AssemblyFig.5 Blanking Punch9 Online International, Reviewed & Indexed Monthly Journalwww.raijmr.comRET Academy for International Journals of Multidisciplinary Research (RAIJMR)
B. Jaya Laxmi et al. / International Journal of Research in ModernEngineering and Emerging TechnologyVol. 2, Issue: 1, April-May : 2014(IJRMEET) ISSN: 2320-6586Fig.6 Total blanking tool assembly5. Structural AnalysisThe objective of the analysis of the functional elements like die set, die plate, punches, stripper plate,guide pillar and guide bush are include structural analysis to estimate the deflection and stresses.Fig.7 Analysis models5.1 Blanking punch (die block) SteelMaterial propertiesE 210000MPaPoisson’s Ratio 0.33Density 7850Kg/m3 0.00000785 Kg/mm3Analysis ProcedureSet Units - /units, si, mm, kg, sec, kFile- change Directory-select working folderFile-Change job name-Enter job nameSelect element-Solid-20 node 95Fig.9 Meshed model5.2 Post ProcessorGeneral Post Processor – Plot Results – Contour Plot- Nodal Solution – DOF Solution – DisplacementVector Sum.10 Online International, Reviewed & Indexed Monthly Journalwww.raijmr.comRET Academy for International Journals of Multidisciplinary Research (RAIJMR)
B. Jaya Laxmi et al. / International Journal of Research in ModernEngineering and Emerging TechnologyVol. 2, Issue: 1, April-May : 2014(IJRMEET) ISSN: 2320-6586Fig.10 General Post Processor – Plot Results – Contour Plot– Nodal Solution – Stress –Von Mises StressFig.11 General Post Processor – Plot Results – Contour Plot Nodal Solution – Total StrainIntensity5.3 Bending Punch Material-SteelMaterial propertiesE 210000MPaPoisson’s Ratio 0.33Density 7850Kg/m3 0.00000785 Kg/mm3Analysis ProcedureSet Units - /units, si, mm, kg, sec, kFile- change Directory-select working folderFile-Change job name-Enter job name11 Online International, Reviewed & Indexed Monthly Journalwww.raijmr.comRET Academy for International Journals of Multidisciplinary Research (RAIJMR)
B. Jaya Laxmi et al. / International Journal of Research in ModernEngineering and Emerging TechnologyVol. 2, Issue: 1, April-May : 2014(IJRMEET) ISSN: 2320-6586Fig.12 Meshed modelLoadsSelect loads Define loads Applyloads Structural displacement On areasSelect ALL DOF OkSelect Pressure On Areas 0.0855N/mm2SolutionSolution – Solve – Current LS – ok Select element-Solid-20 node 95Post ProcessorGeneral Post Processor – Plot Results – Contour Plot - Nodal Solution – DOF Solution DisplacementVector Sum.DISPLACEMENT VECTOR SUMFig13 Imported model12 Online International, Reviewed & Indexed Monthly Journalwww.raijmr.comRET Academy for International Journals of Multidisciplinary Research (RAIJMR)
B. Jaya Laxmi et al. / International Journal of Research in ModernEngineering and Emerging TechnologyVol. 2, Issue: 1, April-May : 2014(IJRMEET) ISSN: 2320-6586General Post Processor – Plot Results – Contour Plot – Nodal Solution – Stress – Von Mises Stress.VON MISSES STRESSTOTAL STRAINFig14. General Post Processor – Plot Results – Contour Plot– Nodal Solution –Total StrainIntensity6. ConclusionIn this thesis, progressive die has been designed for lever component used in thermostats withstandard calculations. The modelling of progressive die is done using Pro/Engineer package. Thecomponent can be produced with accurate dimensions.Forces are calculated when blanking and bending operations are done. The press tonnage calculated is17tons, force to shear is 12.39tons, and stripping force is 13.6293tons.The pressure produced while banking is 0.102N/mm2 and while bending is 0.0855N/mm2.Every step has taken to distribute the stresses evenly so as to provide the set with adequate strength toresist cutting force. Structural analysis is done on the blanking punch and bending punch to determinethe strength of the progressive die. By observing the results, the stress values for both are less than therespective yield stress value of steel. So our designed safe is under given load conditions.References1. Donaldson, Goold, Lecain (1988). ‘Tool Design.’ Tata McGraw-Hill Publishing Company, NewYork.2. Choi, J.C., Chul Kim(2001). ‘‘A compact and pratical CAD/CAM system for the blanking orpiercing of irregular shaped-sheet metal products for progressive working. ‘Journal ofMaterials Processing Technology, Volume 110, Issue 1, March 2001 Pages 36-46.3. Kumar, S., R. Singh. (2004). ‘A low cost knowledge base system framework for progressive diedesign. ‘Journal of Materials Processing Technology, Volumes 153-154,1. November 2004,Pages 958-964.13 Online International, Reviewed & Indexed Monthly Journalwww.raijmr.comRET Academy for International Journals of Multidisciplinary Research (RAIJMR)
The main advantage of computer-aided progressive die design and machining is ability to build precision tooling in less time and at a lower cost. In this project main steps are Design, manufacturing and FEA analysis. This design is the optimal design. By using this design we can produce accurate components. First step is manufacturing process .
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Keywords: Multi-stage forming, process design, progressive die sequence, temperature, friction. Abstract. Progressive and transfer dies are used for forming of sheet metal parts in large quantities. For a given part, the design of progressive die sequence involves the selection of the number of forming stages as well as the determination of the punch and die dimensions at each stage. This .
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Die holder design (a) Design flow for lower die set Punch design Punch plate design Backing plate design Punch holder design (b) design flow for upper die set Diagram 5. Design flow of punch & blanking die sets When punch holder, guide bushing, guide post and die holder are placed in one unit, we call this as “Die set”. When put together, this is called dies with die set. 1.2 Design flow .
I. DESIGN OF PROGRESSIVE DIE progressive die performs a series of fundamental sheet metal operations at two or more stations during each press stroke in order to develop a work piece as the strip stock moves through the die. The work piece on progressive dies travels from one station to another, with separate operations being performed at each station. Usually the work piece is retained in the .
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