文献类型：期刊文献

中文题名：重型液力自动变速器中的变矩器参数化设计方法研究

英文题名：Research on the Parametric Design Method of Torque Converters of the Heavy-duty Hydraulic Automatic Transmission

作者：李正伟 吴怀超 聂龙 潘克强 路芳 陈兴燕

第一作者：李正伟

机构：[1]贵州大学机械工程学院,贵州贵阳550025;[2]贵州理工学院机械工程学院,贵州贵阳550003

第一机构：贵州大学机械工程学院,贵州贵阳550025

年份：2023

卷号：47

期号：11

起止页码：57-64

中文期刊名：机械传动

外文期刊名：Journal of Mechanical Transmission

收录：CSTPCD;;北大核心:【北大核心2020】；

基金：国家自然科学基金项目(51965011);贵州省基础研究计划项目(黔科合基础-ZK[2023]一般133);贵州省科技创新人才团队项目(黔科合平台人才[2020]5020)。

语种：中文

中文关键词：液力变矩器;参数化设计;B样条曲线;NX二次开发

外文关键词：Hydraulic torque converter;Parametric design;B-spline curve;NX secondary development

摘要：现阶段工程机械等装备对重型液力自动变速器的需求越来越大,作为该类变速器核心部件之一的液力变矩器,其设计要求更准确、更高效。由于尺度及转矩差异,普通变矩器的设计方法已不再适用。当前,变矩器参数化设计过程与三维软件模型生成过程相分离,延长了设计周期。为此,提出了一种适用于重型液力自动变速器变矩器的参数化设计方法,并开发了参数化设计软件。通过两段椭圆弧构建中间流线的方法建立了循环圆几何模型,采用4次B样条曲线设计叶片骨线,提出了通过两级进、出口角和顶点坐标控制骨线形状的方法;在叶片骨线形状控制方法和曲线控制点之间建立联系,设计骨线控制参数的约束条件;基于NX Open软件开发变矩器自动化设计程序,以参数合理性检查为约束条件,建立了中心调度式数据处理框架。实例验证结果表明,该设计系统能使液力变矩器快速获得合理造型。
At present,the demand for heavy-duty hydraulic automatic transmission in engineering machinery and other equipment is increasing.As one of the core components of such kind of transmission,the design of hydraulic torque converters requires better accuracy and efficiency.Due to the difference of scale and torque,the design method of common torque converters is no longer applicable.The torque converter parametric design process is separated from the 3D software model generation process currently,which prolongs the design cycle.Therefore,this study presents a parametric design method for torque converters of the heavy-duty hydraulic automatic transmission and develops the parametric design software.Firstly,the geometric model of torus is established by constructing the middle streamline by two elliptical arcs,the camber line is designed with the quartic B-spline curve,and a method of controlling the shape of the camber line through the two-level inlet and outlet angles and vertex coordinates is proposed.The connection is established between the blade camber line shape control method and the curve control points,and the constraint conditions of camber line control parameters are designed.The automatic design program of torque converters is developed based on the NX Open software,and the central scheduling data processing framework is established with parameter rationality checking as the constraints.The instance results show that the design method can make the torque converter get reasonable shape quickly.