齿轮

This paper describes the concaved gear tooth profile after shaving resulting from the unbalance of cutting forces due to the variation of numbers of contact points acting on the teeth flanks, during backlash-free meshing engagement between the shaving cutter and the gear workpiece.

本文认为剃齿齿轮产生齿形中凹现象的主要原因是由于剃齿刀和齿轮在无侧隙紧密啮合过程中，因两侧齿面接触点数量的变化引起切削力的不平衡而造成的。

Orthogonal experiment was adopted to analyze the effects of vacuum casting processing parameters such as mould temperature,resin temperature,vacuum deaerating time and curing temperature etc.

采用正交实验方法进行实验，研究了微齿轮真空铸型过程中模具温度、树脂温度、真空脱泡时间和固化温度对微齿轮外形尺寸的影响作用。

The research indicated that high precision micro-gear can be batch achieved by silicone mould vacuum casting and the vacuum deaerating time had the most important influence on the physical dimension of micro-gear.

研究结果表明，利用硅胶模进行微齿轮真空铸型可批量获得精度较高的成形件，真空脱泡时间对微齿轮成形件的外形尺寸影响最大。

Principle and methods of closed-forming for bevel gear and multi-motion distributaries for cylinder gear was introduced.

阐述了应用闭式成形技术成形伞齿轮的原理，以及复动分流技术成形圆柱齿轮的原理。

However, because of the differences of the transmission ratio and speed, the author enlarges the planet gear, solar gear, thickness of the inner circle ring as well as the enclasping radius of the enclasping brake through the mechanical design and calculation.

在设计过程没有改变原有的升降机零部件的位置关系，但由于，传动比以及传动速度的不同，所以，通过受力分析计算，加大了行星齿轮、中心齿轮、内齿圈的厚度；同时也加大了抱闸抱紧时的抱紧半径。

In this article , instead of changing the ubiety among the parts of the original elevator , the author keeps on using the original structure. However, because of the differences of the transmission ratio and speed, the author enlarges the planet gear, solar gear , thickness of the inner circle ring as well as the enclasping radius of the enclasping brake through the mechanical design and calculation .

在设计过程没有改变原有的升降机零部件〖需要本套毕业设计请联系QQ：809940198〗的位置关系，但由于，传动比以及传动速度的不同，所以，通过受力分析计算，加大了行星齿轮、中心齿轮、内齿圈的厚度；同时也加大了抱闸抱紧时的抱紧半径。

Among the various means of mechanical power transmission (including primarily gears,belts, and chains), gears are generally the most rugged and durable.

在各种不同的方法，主要包括机械传动齿轮，带，齿轮，通常是最坚固耐用。

Main design elements include: the determination of the project, choice of Motor and the speed of every axial, the calculation of power and torque, the design and calculation of the belt or gear and the Bevel gear, the smallest diameter of axis, calculation to the size of belt wheel and gears and Bevel gear and protracting the drawing of the project and the assemblage and the part.

主要设计内容有：方案的确定；电机的选择；各轴的转速、功率和转矩计算；带、齿轮、及锥齿轮的设计与计算；轴的最小直径；带、齿轮、及锥齿轮的尺寸计算以及方案图、装配图和零件图的绘制。

This removal of air from the pump casing produces a partial vacuum on the pump inlet ,here the fluid is trapped between the teeth of the upper and lower gears and the pump casing .continued rotation of the gears forces the fluid out of the pump discharge .

这种泵内空气运动使泵吸入口处形成了真空，于是外部油箱的液体在大气压的作用下，由泵的入口进入，聚集在上下齿轮和泵壳体之间，齿轮连续的旋转使液体流出泵的出口。

Through the model the computerized analysis of the speed,angle and acceleration of gear real tooth surface can be accomplished.

齿轮的冲击不仅是产生噪声的重要来源，而且还容易造成齿面的损伤，降低齿轮的使用寿命。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。