基于solidworks减速器设计和应力分析.doc

基于solidworks的圆柱齿轮应力分析 [摘要] 齿轮传动的失效将直接影响机械传动，从而影响整个生产过程。齿轮折断则是其中主要的失效方式。因此对轮齿弯曲应力进行准确的、深入的研究就显得尤为重要。 本文在Solidworks环境中，利用其机构运动仿真功能基于齿轮加工原理精确建立了齿轮三维模型。具有准确过度曲线的齿轮模型的建立，为齿根动应力的研究奠定了基础。 solidworks是求解接触、碰撞问题的显式动力学软件。本文利用solidworks对齿轮副的动力接触进行了仿真，通过主动轮的连续转动，带动从动轮运转，动态地仿真了齿轮啮合过程，得到了一个啮合周期内的齿根动应力的变化规律。 并且，准确求接触的齿根应力，以此为齿轮结构设计的应力约束条件，对齿轮的腹板结构进行了优化设计，降低了成本，这种将有限元技术应用到优化设计中的方法，真正意义上实现了零部件的计算机辅助设计，是实现零部件设计自动化的主要途径。 [关键词] 齿轮；动应力；solidworks；优化设计 Analysis of the cylindrical gear stress on solidworks Abstract The fail of gear transmission will directly affects machine driving motion，and thereby affects the whole production process。Break-off of the gear tooth is the most one of all fail manners。So it is very important for us to exactly and thoroughly study bending stress of gear tooth. In the paper，we exactly set up gear’s 3D model based on gear machining principle using mechanism movement emulation function of Solidworks.It established base of research of dedendum dynamic stress that the gear model with exact transition curve was built. Solidworks is explicit dynamics software resolving for contact，collision problem.So the paper used Solidworks to emulate dynamic contact of gear pair，andused driver’s continuous running to drive driven’s running，consequently emulated gear’s dynamic meshing process and got variational rule of dynamic stress of root of tooth within a meshing cycle. Besides，the paper used exact stress of root of tooth that was resolved as stress constraint condition，and carry out optimum design in the web plate structure.The method that applying finite element technology to optimum design achieves computer aided design（CAD）of parts in deed，and it is the main approach of achieving automatic design of parts. Key words：gear；dynamic stress；Solidworks；optimum design 目录 1 引言 1 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc343993859 2 传动装置的总体设计 2 HYPERLINK \l _Toc343993860 2.1 拟定传动方案 2 HYPERLINK \l _Toc343993861 2.2 选择原动机——电动机 3 HYPERLINK \l _Toc343993865 2.3 传动装置总传动比的确定及各级传