【作者】 任强；

【导师】 夏链；

【作者基本信息】 合肥工业大学 ， 机械制造及其自动化， 2019， 硕士

【摘要】 齿轮作为机械基础零部件,在机械行业的发展中扮演着越来越重要的角色。高精度齿轮的是生产高端机械产品的必要前提。内啮合强力珩齿作为一种齿轮精加工工艺,可以有效提高齿轮的承载性能、大幅减少齿轮的加工误差,同时高精度的齿面对于抗疲劳强度、耐磨性等性能有着良好的提升效果。珩齿产生的齿面特殊纹理能有效抑制齿轮啮合过程中的噪声,提高传动的稳定性,因此,内啮合强力珩齿工艺技术研究为加工高精度齿轮提供理论和实验基础。内啮合强力珩齿工艺比较复杂,目前国内外对于珩齿技术的研究还比较少。本文研究内容基于国家自然科学基金(51575154)“数控内齿珩轮强力珩齿机理研究”项目以及国家科技重大专项课题(2013ZX04002051)“Y4830CNC数控内齿珩轮强力珩齿机”项目,对于珩齿工艺理论、内齿珩磨轮表面微观形貌以及珩齿工件粗糙度预测等方面进行了研究,研究内容如下:(1)内啮合强力珩齿啮合数学方程的推导。基于内啮合强力珩齿空间啮合的方式,建立内啮合强力珩齿坐标系,通过齿轮啮合原理推导出内啮合强力珩齿齿面相对运动速度、接触线、啮合面方程等。建立了内啮合强力珩齿接触线、珩削纹路模型。(2)内齿珩磨轮表面微观形貌的建模。对于测量的内齿珩磨轮微观形貌结果进行滤波处理,去除高频信息;通过Johnson变换与频谱表示法建立一种非高斯随机表面,并引用“伯明翰14”参数对测量结果与仿真结果进行评价,证明了该模型的正确性。(3)珩齿加工工件表面粗糙度变化规律的研究。内啮合强力珩齿工艺的特殊加工方式会导致齿面不同齿高出粗糙度呈现差异。本文通过结合珩齿运动学方程及磨粒磨削粗糙度形成机理,预测了珩齿工件齿轮齿面从齿根到齿顶表面粗糙度的变化规律,并通过实验验证了该变化规律,同时探究了变轴交角对对工件表面粗糙度的影响。更多还原

【Abstract】 Gear,as a basic part of machinery,plays a more and more important role in the development of machinery industry.High precision gear is a necessary prerequisite for the production of advanced mechanical products.As a kind of gear finishing technology,internal meshing power honing can effectively improve the bearing performance of gear and greatly reduce the machining crror of gear.At the same time,the high precision tooth surface has a good effect on fatigue strength,wear resistance and other properties.The special texture of tooth surface produced by honing can effectively suppress the noise in the meshing process of gear and improve the stability of transmission.Therefore,the research of internal meshing power honing technology provides a theoretical and experimental basis for machining high precision gear.I’m sorry.The honing technology of internal meshing power honing is specially complex,and there is little research on honing technology at domestic and abroad at present.The research content of this paper is based on the National Natural Science Foundation of China(51575154)"Research on the strong honing Mechanism of CNC Internal Gear honing Wheel" and the National Science and Technology Major Project(2013ZX04002051)"Y4830CNC CNC Internal Gear honing Machine" project.The honing technology theory,the surface morphology of the honing wheel and the roughness prediction of the honing workpiece are studied.The research contents are as follows:(1)Derivation of meshing mathematical equation for internal meshing power honing teeth.Based on the spatial meshing mode of internal meshing power honing tooth,the coordinate system of internal meshing power honing tooth is established,and the relative motion velocity,contact line and meshing surface equation of internal meshing force honing tooth surface arc derived from the gear meshing principle.The contact line of internal meshing power honing tooth and the model of honing path are established.(2)Modeling of surface morphology of inner tooth honing wheel.The micromorphology of the measured inner tooth honing wheel is filtered to remove the high frequency information.A non-Gaussian random surface is established by Johnson transform and spectrum representation,and the measurement results and simulation results are evaluated by using "Birmingham 14" parameter,which proves the correctness of the model.(3)Study on the variation of surface roughness of honing workpiece.The special machining mode of internal meshing power honing technology will lead to the differen-ce of roughness between different teeth on the tooth surface.In this paper,based on the kinematic equation of honing and the formation mechanism of abrasive grinding roughness,the variation of tooth surface roughness from tooth root to tooth top surface of honing workpiece is predicted,and the change law is verified by experiments.At the same time,the influence of variable axis intersection angle on the surface roughness of workpiece is discussed.更多还原