新型人字齿同步带传动设计及仿真分析
发布时间：2018-11-04 12:58
【摘要】：人字齿同步带传动基础理论与应用研究是继直齿和斜齿同步带传动之后,带传动领域里新的热点研究课题。由于人字齿同步带靠带齿与轮齿相啮合来传递动力,兼有齿轮传动、链传动和摩擦型带传动的优点,具有传动平稳、传递功率大、传动比准确、承载能力大、结构简单、维护方便等优点。本文通过理论计算和有限元仿真分析,设计计算新型人字齿同步带齿形参数和结构参数,并确定了新型人字齿同步带的特殊加工工艺。 在分析新型人字齿同步带受力的基础上,讨论带齿部和带齿槽的变形量;考虑带齿弹性变形协调条件,求得在已知松边和紧边拉力时新型人字齿同步带的齿间载荷分布规律,得到主动轮紧边进入啮合的第一个带齿承受最大法向载荷的结论。考虑同步带材料的特殊性,建立带齿与轮齿啮合的弹性接触有限元数学模型,为后来的仿真分析奠定理论基础。 以直齿高齿同步带齿形为基础,利用保角映射法,以齿根最大应力最小为目标,计算带齿的齿根应力,确定最佳带齿齿形参数。根据啮合原理,用齿廓法线法求出新型人字齿同步带模具加工刀具及带轮加工刀具齿形方程,并用MATLAB软件画出相应的齿形。根据人字齿同步带的特点及其特殊加工工艺,完成人字齿同步带组合模具设计。根据人字齿同步带制备的反成型原理,进行人字齿同步带模具滚刀设计和带轮加工刀具的设计。确定新型人字齿同步带的加工工艺,将加工出的带与带轮进行啮合测试。 在对人字齿同步带传动进行合理简化的基础上,建立一对人字齿啮合的三维模型,利用ANSYS有限元软件对三维模型进行了受力分析及有限元仿真,得出新型人字齿同步带应力分布状态,说明新型人字齿同步带的齿根断裂是主要的失效形式之一;有限元分析结果还可确定以齿根最大主应力最小为目标时,新型人字齿同步带的最佳螺旋角为30°。
[Abstract]:The research of basic theory and application of herringbone synchronous belt drive is a new hot research topic in the field of belt drive after straight and oblique teeth synchronous belt transmission. Because the herringbone synchronous belt is meshed with gear teeth to transmit power, it has the advantages of gear transmission, chain transmission and friction belt transmission. It has the advantages of stable transmission, high transmission power, accurate transmission ratio, large bearing capacity and simple structure. The maintenance is convenient and so on. Through theoretical calculation and finite element simulation analysis, this paper designs and calculates the tooth shape parameters and structural parameters of a new type of herringbone synchronous belt, and determines the special processing technology of the new type herringbone synchronous belt. Based on the analysis of the force of the new type of herringbone synchronous belt, the deformation of the belt and the slot are discussed. Considering the compatibility condition of elastic deformation with teeth, the distribution law of load between teeth of the new type of herringbone synchronous belt is obtained when the tension of loose and tight edges is known, and the conclusion that the first belt tooth with compact edge of the active wheel entering into meshing bears the maximum normal load is obtained. Considering the particularity of the material of synchronous belt, an elastic contact finite element mathematical model for meshing of belt teeth and gear teeth is established, which lays a theoretical foundation for the later simulation analysis. Based on the tooth profile of the straight high tooth synchronous belt, the maximum stress of the tooth root and the minimum of the tooth root stress are calculated by the conformal mapping method, and the optimum tooth profile parameters are determined. According to the meshing principle, the tooth profile equations of the new type of herringbone synchronous belt die machining tool and the belt wheel machining tool are obtained by using the tooth profile normal method, and the corresponding tooth profile is drawn by MATLAB software. According to the characteristics of herringbone synchronous belt and its special processing technology, the combined die design of herringbone synchronous belt is completed. According to the reverse forming principle of the miter synchronous belt, the design of the die hob and the cutting tool with wheel are carried out. The processing technology of the new herringbone synchronous belt was determined, and the meshing test was carried out between the machined tape and the belt wheel. On the basis of reasonable simplification of herringbone synchronous belt transmission, a three-dimensional meshing model of a pair of herringbone teeth is established. The force analysis and finite element simulation of the three-dimensional model are carried out by using ANSYS finite element software. The stress distribution state of the new herringbone synchronous belt is obtained, which indicates that the root fracture of the new herringbone synchronous belt is one of the main failure forms. The results of finite element analysis can also determine that the optimum spiral angle of the new type of herringbone synchronous belt is 30 掳when the maximum principal stress of the tooth root is the minimum.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH132.32
本文编号：2309884
[Abstract]:The research of basic theory and application of herringbone synchronous belt drive is a new hot research topic in the field of belt drive after straight and oblique teeth synchronous belt transmission. Because the herringbone synchronous belt is meshed with gear teeth to transmit power, it has the advantages of gear transmission, chain transmission and friction belt transmission. It has the advantages of stable transmission, high transmission power, accurate transmission ratio, large bearing capacity and simple structure. The maintenance is convenient and so on. Through theoretical calculation and finite element simulation analysis, this paper designs and calculates the tooth shape parameters and structural parameters of a new type of herringbone synchronous belt, and determines the special processing technology of the new type herringbone synchronous belt. Based on the analysis of the force of the new type of herringbone synchronous belt, the deformation of the belt and the slot are discussed. Considering the compatibility condition of elastic deformation with teeth, the distribution law of load between teeth of the new type of herringbone synchronous belt is obtained when the tension of loose and tight edges is known, and the conclusion that the first belt tooth with compact edge of the active wheel entering into meshing bears the maximum normal load is obtained. Considering the particularity of the material of synchronous belt, an elastic contact finite element mathematical model for meshing of belt teeth and gear teeth is established, which lays a theoretical foundation for the later simulation analysis. Based on the tooth profile of the straight high tooth synchronous belt, the maximum stress of the tooth root and the minimum of the tooth root stress are calculated by the conformal mapping method, and the optimum tooth profile parameters are determined. According to the meshing principle, the tooth profile equations of the new type of herringbone synchronous belt die machining tool and the belt wheel machining tool are obtained by using the tooth profile normal method, and the corresponding tooth profile is drawn by MATLAB software. According to the characteristics of herringbone synchronous belt and its special processing technology, the combined die design of herringbone synchronous belt is completed. According to the reverse forming principle of the miter synchronous belt, the design of the die hob and the cutting tool with wheel are carried out. The processing technology of the new herringbone synchronous belt was determined, and the meshing test was carried out between the machined tape and the belt wheel. On the basis of reasonable simplification of herringbone synchronous belt transmission, a three-dimensional meshing model of a pair of herringbone teeth is established. The force analysis and finite element simulation of the three-dimensional model are carried out by using ANSYS finite element software. The stress distribution state of the new herringbone synchronous belt is obtained, which indicates that the root fracture of the new herringbone synchronous belt is one of the main failure forms. The results of finite element analysis can also determine that the optimum spiral angle of the new type of herringbone synchronous belt is 30 掳when the maximum principal stress of the tooth root is the minimum.
【学位授予单位】：哈尔滨工业大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH132.32
【引证文献】
相关期刊论文 前1条
1 刘伟;;同步带选型中的问题分析[J];科技信息;2013年19期
相关硕士学位论文 前1条
1 张衡;血型分析系统自动加样关键技术研究[D];重庆大学;2012年
，本文编号：2309884
本文链接：https://www.wllwen.com/kejilunwen/jixiegongcheng/2309884.html
