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Virtual Design and Numerical Analysis on Cylindrical Gear Rolling Process

Author: SunYuZhu
Tutor: WangHuaJun
School: Wuhan University of Technology
Course: Materials Processing Engineering
Keywords: Cylindrical gear Roll forming process Optimization Theory Defect prediction and analysis
CLC: TG61
Type: Master's thesis
Year: 2011
Downloads: 74
Quote: 0
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Abstract


Along with the extensive application of gears , gear manufacturing technology constantly improve and develop . Forging, rotary forging , extrusion, wedge rolling, rolling and other gear plastic forming process because of its high efficiency, high strength, high precision machining characteristics and become an effective way of energy saving , but also get a lot of research and attention . Gear roll forming process as a new process , based on the characteristics with a gear meshing , the use of the machine feed characteristics , under the action of the mold , the surface of the metal billets continuous plastic deformation occurs gradually , between filling the mold and the billet rolling the gap until a complete tooth . In the process of the gear rolling metal flow billets , rolling round the smooth rolling motion , forming force changes , the physical field distribution will change with the rolling process change accordingly . Meanwhile , helical gears roll forming process , the axial force of the roll process is not yet determined . Since the gear roll forming lack of relevant data and empirical theory , the rolling process, rolling wheel and billet size and motion parameters are needed to determine experimental phase . Therefore, this paper DEFORM-3D software on Gear roll forming process simulation analysis, the cylindrical gear rolling process to verify the feasibility of the gear roll forming process were studied. Cylindrical gear roll forming technology research contents and results : ( a ) establish roll models : Determine blank size parameter , roll process parameters. Create and identify with rolling wheels with billet model . ( 2 ) Gear rolling mechanism: Based on DEFORM-3D finite element analysis software , the gear roll-forming process simulation analysis . Get the gear blank roll-forming process of the relationship between deformation and mechanical loads ; obtain gear rolling process, the gear blank metal flow ; detection of rolling process, gear blanks stress field and temperature distribution . ( 3 ) gear roll-forming process and optimization: Analog cylindrical gear roll-forming process , and the rolling process parameters to optimize the analysis : According to the gear teeth forming conditions on the billet size optimization. ( 4 ) gear roll-forming defect prediction and analysis: cylindrical gear roll forming process to predict defects ; actual defects on the roll forming process analysis and improvement.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Gear cutting and gear machine
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