齿轮

Based on the present studying state of cold precision forging process of spur gear both at home and abroad, the key technical problems of this process's practical application are deeply researched in this paper.

本文在对国内外齿轮精锻技术研究现状进行分析的基础上，针对目前困扰齿轮冷精锻技术在实际生产应用的关键问题进行了深入的研究。

Lightweight Spur Gear - A new lightweight spur gear reduces the weight of the drive train for increased acceleration.

轻巧的齿轮-一种新型的轻质齿轮减少了重量，驱动器列车增加加速度。

The heat transfer model of the spur gear used in the high speed train is established, and solved by using the finite differential method. The influence of the immersion depth on the equilibrium temperature is analyzed by using this model.

并建立齿轮箱的传热模型，采用有限差分法，在模型验证有效的基础上，计算分析了不同浸油深度对齿轮箱平衡温度场的影响。

The sources of noise are given mostly in the tube and gearbox of strander .

200型捻股机的噪声源主要在捻股机的筒体和齿轮箱体，提高筒体和齿轮的制造精度，合适选择轴承类型、精度，正确调整轴承的间隙和预紧力，可有效地控制200型捻股机的噪声。

Firstly, the developing principles of the cylindrical internal helical gear are proposed through analyzing the movement and geometry requirements, which provides continuous contact between the mating gear surfaces. The tooth surface of the internal helical gear in the new gearing can be imagined as being generated by the normal section of the conjugated surface of the ball-tooth, moving along the radial projection of helix line of the tooth-root circle. Also, the proposed surface can be approximate tangent to the conjugated surface of the ball-tooth along a spacial curve.

首先，通过分析保证行星轮作螺环运动时与内斜齿轮实现连续啮合传动的运动和几何条件，提出了圆柱内斜齿轮齿面的两种形成原理：即由球齿运动包络曲面的法截面沿其齿根圆螺旋线在径向的投影进行拓展所形成的内齿面，以及与球齿运动包络曲面呈近似相切接触的等螺距齿面构成的内齿面。

Firstly the dissertation analyses the reason of vibration and noise of the transmission gear and the box, drawing a conclusion that the change of gear mesh rigidity and transmission error are the crucial causation to engender vibration and noise of the gear-box; the main source of the noise is the syntonic noise in box vibration and noise.

本文首先分别分析了变速箱传动齿轮和变速箱箱体的振动噪声产生机理，得知产生变速箱传动齿轮振动噪声的主要因素是轮齿啮合刚度的变化和传动误差的影响；且在变速箱箱体振动噪声中自鸣噪声是汽车变速箱的主要噪声源。

It is rapid and accurate in design and drawing the finger milling-cutter templet with CAD.

本文着重阐述了渐开线齿轮齿根过渡曲线的确定以及使用微机设计齿轮指形铣刀样板的方法。

The finger milling-cutter templet of involute gear is the assistant tool mostly to machining big module gear.

齿轮指形铣刀样板是加工大模数齿轮的主要辅助工具。

Thus, it is of great theoretic and realistic sign...

因此，研究齿轮及齿轮加工的相关技术具有很大的理论和现实意义。

Gear ; EHL ; Gear Transmission ; Thermal analysis.

齿轮；弹流润滑；齿轮传动；热分析

The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作：对伸臂位于顶部的单层框架—筒体模型进行分析，提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。