减变速一体化齿轮啮合原理的研究

发布时间：2019-06-11 18:05

【摘要】：突破常规非圆齿轮副的节曲线都是非圆形的限制,提出由普通直齿圆柱齿轮和非圆面齿轮组成的传动机构,可实现任意的减变速一体化传动,从而最大限度地简化传统减变速装置的传动结构,节省传动空间,提高传动效率。提出用非圆曲线代替普通面齿轮节圆的设想,根据传动过程中两齿轮节曲线之间进行纯滚动的原理,建立圆柱齿轮的空间节曲线方程,从而揭示正交轴圆柱齿轮与非圆面齿轮的传动机理;将圆柱齿轮与非圆面齿轮的传动比分解成减速比和变速比两部分,建立几何参数与两部分传动比的对应关系,可方便地设计任意减变速传动规律。根据齿轮空间啮合原理,建立由标准齿轮插刀包络非圆面齿轮的齿面模型,可为进一步轮齿几何特性分析及强度计算提供理论基础。计算出不同设计参数下非圆面齿轮副的传动比,分析了其独特的传动性能,并利用数字化制造仿真技术模拟标准齿轮插刀加工非圆面齿轮的过程,得到与齿廓数学模型完全吻合的齿面数据,从而验证了新型齿轮的传动机理及齿面模型的正确性。
[Abstract]:Breaking through the limitation that the pitch curve of the conventional non-circular gear pair is non-circular, a transmission mechanism composed of ordinary spur gear and non-circular gear is put forward, which can realize arbitrary speed reduction integrated transmission, thus simplifying the transmission structure of the traditional speed reduction device to the greatest extent, saving transmission space and improving transmission efficiency. The idea of replacing the ordinary gear pitch circle with the non-circular curve is put forward. According to the principle of pure rolling between the two gear pitch curves in the transmission process, the spatial pitch curve equation of the cylindrical gear is established, so as to reveal the transmission mechanism of the orthogonal shaft cylindrical gear and the non-circular gear. The transmission ratio of cylindrical gear and non-circular gear is decomposed into two parts: deceleration ratio and variable speed ratio, and the corresponding relationship between geometric parameters and transmission ratio of two parts is established, which can conveniently design the law of arbitrary speed reduction transmission. According to the principle of gear spatial meshing, the tooth surface model of non-circular gear enveloped by standard gear insert cutter is established, which can provide a theoretical basis for further analysis of geometric characteristics and strength calculation of gear teeth. The transmission ratio of non-circular gear pair under different design parameters is calculated, its unique transmission performance is analyzed, and the process of machining non-circular gear with standard gear cutter is simulated by using digital manufacturing simulation technology, and the tooth surface data which are in good agreement with the mathematical model of tooth profile are obtained, thus verifying the correctness of the transmission mechanism and tooth surface model of the new gear.
【作者单位】：燕山大学机械工程学院;燕山大学国家冷轧板带装备及工艺工程技术研究中心;
【基金】：河北省自然科学基金(E2016203183) 秦皇岛市科技支撑计划项目(201502A014) 燕山大学青年教师自主研究计划(14LGB003)资助项目
【分类号】：TH132.41

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