共查询到18条相似文献,搜索用时 156 毫秒
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《机电产品开发与创新》2016,(1)
为了解决空间多级齿轮传动系统方案求解和优化缺乏统一支撑体系、建模困难的问题,提出了空间多级齿轮传动系统设计的自动化系统架构,结合Visual Basics6.0研制了空间多级齿轮传动系统的方案设计、优化设计集成建模的自动设计软件系统,设计师仅需输入少许设计需求,系统能自动完成方案设计;并根据确定方案自动完成优化建模和求解,真正实现了空间多级齿轮传动系统设计的自动化。实例结果验证了系统的可行性和可靠性,是一款建模过程简单,设计质量和效率高的设计工具。 相似文献
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《机电工程》2021,38(8)
针对齿轮传动系统误差建模分析和精度分配这一问题,以新型转台传动系统为例,提出了一种具备良好鲁棒性、经济性及实用性的新传动系统优化设计方案。首先,建立了从单个齿轮到一对齿轮再到齿轮传动系统的传动误差分步计算体系,以概率统计法为基础创建了传动误差数学模型,对其传动误差进行了计算;然后,针对传统遗传算法进行多目标拓扑优化,创建了具备良好经济性和工程意义的齿轮精度分配方案,对齿轮精度进行了分配;最后,将两者进行有机整合,得到了新的传动系统优化设计方案,并设计实验对其正确性进行了验证。研究结果表明:采用新传动系统优化设计方案进行优化后,转台传动系统在满足设计要求的前提下,相关的齿轮精度等级得以降低,转台成本下降;同时,经过实验验证,采用该传动误差计算模型能够使齿轮传动系统的设计周期缩短7%,并降低对经验的依赖程度。 相似文献
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以航空发动机附件平行轴传动系统为研究对象,探讨了附件之间干涉和传动链传动设计准则对传动系统布局的影响。将附件传动系统视为单输入单元和多输出单元的黑箱,可行传动方案为遍历各单元的无内环路径。参考TSP(Traveling salesman problem)路径规划算法,运用图论知识可以确定表示单元之间关联疏远程度的邻接矩阵。采用广探法得到满足多约束条件的所有可行传动路径,并建立图论中单元节点度与传动形式的关系,实现了平行轴传动系统方案的自动布局。根据不同目标下最优约束条件,在可行方案中可自动获得最优方案。通过以传动链体积最小为目标的六轴附件传动方案设计实例,验证了该方法的有效性。 相似文献
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KISSSOFT是一个精确而又方便的计算软件,主要用于机械部件(轴,齿轮等)的大小和最优化计算。文中借助其齿轮专家系统对NGW型行星齿轮传动进行参数的设计和强度校核,不仅优化了设计参数,而且提高了产品的开发效率。 相似文献
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Quasi Ellipsoid Gear Surface Reconstruction Based on Meshless Local Petrov-Galerkin Method and Transmission Characteristic 总被引:1,自引:0,他引:1
《机械工程学报(英文版)》2010,(6)
Special transmission 3D model simulation must be based on surface discretization and reconstruction,but special transmission usually has complicated tooth shape and movement,so present software can't provide technical support for special transmission 3D model simulation.Currently,theoretical calculation and experimental method are difficult to exactly solve special transmission contact analysis problem.How to reduce calculation and computer memories consume and meet calculation precision is key to resolve special transmission contact analysis problem.According to 3D model simulation and surface reconstruction of quasi ellipsoid gear is difficulty,this paper employes meshless local Petrov-Galerkin(MLPG) method.In order to reduce calculation and computer memories consume,we disperse tooth mesh into finite points-sparseness points cloud or grid mesh,and then we do interpolation reconstruction in some necessary place of the 3D surface model during analysis.Moving least square method(MLSM) is employed for tooth mesh interpolation reconstruction,there are some advantages to do interpolation by means of MLSM,such as high precision,good flexibility and no require of tooth mesh discretization into units.We input the quasi ellipsoid gear reconstruction model into simulation software,we complete tooth meshing simulation.Simulation transmission ratio during meshing period was obtained,compared with theoretical transmission ratio,the result inosculate preferably.The method using curve reconstruction realizes surface reconstruction,reduce simulation calculation enormously,so special gears simulation can be realized by minitype computer.The method provides a novel solution for special transmission 3D model simulation analysis and contact analysis. 相似文献
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Hong-Zhong Huang Zhi-Gang Tian Ming J. Zuo 《Journal of Mechanical Science and Technology》2005,19(5):1080-1086
The preliminary design optimization of multi-stage spur gear reduction units has been a subject of considerable interest,
since many high-performance power transmission applications (e.g., automotive and aerospace) require high-performance gear
reduction units. There are multiple objectives in the optimal design of multi-stage spur gear reduction unit, such as minimizing
the volume and maximizing the surface fatigue life. It is reasonable to formulate the design of spur gear reduction unit as
a multi-objective optimization problem, and find an appropriate approach to solve it. In this paper an interactive physical
programming approach is developed to place physical programming into an interactive framework in a natural way. Class functions,
which are used to represent the designer’s preferences on design objectives, are fixed during the interactive physical programming
procedure. After a Pareto solution is generated, a preference offset is added into the class function of each objective based
on whether the designer would like to improve this objective or sacrifice the objective so as to improve other objectives.
The preference offsets are adjusted during the interactive physical programming procedure, and an optimal solution that satisfies
the designer’s preferences is supposed to be obtained by the end of the procedure. An optimization problem of three-stage
spur gear reduction unit is given to illustrate the effectiveness of the proposed approach. 相似文献
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针对四圆弧齿轮的轮齿是三维螺旋体的特点以及其几何设计与力学计算复杂的实际情况,采用三维有限元法,以VC++6.0为开发工具,基于OpenGL图形内核自主开发了一款四圆弧齿轮有限元分析专用软件,包括四圆弧齿轮三维实体模型参数化计算机辅助设计、有限元网格的自动生成、边界条件的建立、最恶劣加载点的确定以及应力的计算,工程人员只需输入四圆弧齿轮的基本参数,即可自动实现四圆弧齿轮的参数化CAD建模和有限元分析。通过与SolidWorks软件中的Simulation有限元分析模块进行对比,验证了所述软件分析结果的正确性。 相似文献
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齿轮是一种通用的机械传动零件.采用ASP.NET技术和网络数据库技术,使用C#语言开发了基于Web的齿轮设计系统.该系统利用Auto CAD的二次开发技术,实现了从强度计算到三维实体模型的自动生成的全过程,为基于网络的协同设计提供了一种通用零件的设计手段. 相似文献
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以风力发电机齿轮箱具体应用实例为载体,通过理论计算设计出的齿轮箱模型,并通过UG软件建模,得到了增速齿轮箱数字样机三维模型,并把该样机模型导入Adams软件进行运动仿真分析,验证了设计样机的合理性,并为UG软件和Adams软件结合提供了一种方法。 相似文献