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Research on the Three-roll Cross Rolling Forming Laws of the Duplex Gear Blank

Author: ZhouXiuMei
Tutor: HuaLin；ShiDaFang
School: Wuhan University of Technology
Course: Materials Engineering
Keywords: Double gear blanks Three-roll cross rolling Theoretical analysis Numerical Simulation Test
CLC: TG335
Type: Master's thesis
Year: 2011
Downloads: 44
Quote: 0
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Abstract


The Double Gear is the basis for parts of machinery, automobile , shipbuilding , widely used in the aircraft industry , the geometric characteristics of the round billet for the shape of the cake with a double step . Traditional manufacturing techniques for structural parts for the forging billet system , cutting manufacturing processes in the production energy consumption , material consumption large , low efficiency . With the advent of low - carbon society , all walks of life and development requirements tends to be low energy consumption , low pollution and low emission double gear blanks forming this paper, a new manufacturing process of an energy saving - three-roll cross rolling process . Three - roll rolling process is a continuous local plastic forming process and materials section , efficient , the small vibration impact , low-cost and significant technical and economic advantages . Double gear blanks is also a non- stable and highly nonlinear process of forming a three-roll cross rolling , and by the coupling effect of multiple factors . Thus play to its strengths , for the three-roll cross rolling new technology applied to actual production , from the theoretical aspects , numerical simulation and test of basic research , the main work is as follows : 1 . Theoretical analysis . Reasonable double gear blank three-roll cross rolling bite into the model , the rolling motion model as well as the active roller displacement calculation model , derived double gear blank three-roll cross rolling conditions bite into the the instantaneous workpiece size rolling process and the rotation speed of expression as well as the completion of the workpiece forming the required active roll total feed amount of expression , and analysis of the impact factors and the impact of the law . Numerical simulation . Roll cross rolling coupled thermal model twin gear blanks , theoretically and verify its effectiveness . Based on the finite element model reveals double gear blank three-roll cross rolling process of forming regularity explore the various process parameters on the deformation of the workpiece after rolling uneven , rolling force and rolling torque and temperature distribution investigated. 3 trial . To double gear blank to meet the three-roll cross rolling the need of the follow-up test , a simple transformation of existing laboratory new vertical CNC hot rolled rings machine and design accordingly rolls , workpiece and process parameters .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Rolling > Rolling process
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