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1·Modified gear can break through the limit of spur gear in using. But modified gear must be manufactured with special design tools in some conditions.

变位齿轮可以有效突破标准渐开线齿轮存在的使用局限性，但在某些情况下必须采用专门设计的刀具加工。

2·The rational rough and technological parameter of profile modified gear is gained by analysis and optimizing of forming, and the preliminary shaping size of product is defined.

根据摩托车档位齿轮的产品特点，进行成型工艺分析优化，获得合理的产品精化毛坯，拔模斜度等参数，获取产品的预成型毛坯尺寸。

3·Calculation of the geometric size of the modified gear, analysis of the flow characteristics of the outer-engaged gear pump, leakage and gap, radial force are discussed in this paper.

分析了影响外啮合直齿轮机油泵容积效率的主要因素 ，对油泵齿谷产生空穴和间隙漏损的机理进行了探讨。

4·Also this method can be used to optimize the parameters of modified worm gear drive and analyse the contact condition under errors.

本文的方法还可用来分析优化齿面的曲率修正参数，以及误差作用下的齿面接触情况。

5·Although the cycloidal gear has much merits the pure cycloidal gear is less used in practice and the modified one is widely employed.

摆线齿轮具有许多优点，但是在实际应用中很少采用纯摆线齿轮，而大都采用修正摆线齿轮。

6·A modified tooth profile is thus developed taking accounts of gear strength, manufacturing and service, etc.

然后从强度、制造和使用等方面考虑，提出一种改进齿形。

7·The calculation of profile modified coefficient of large exposed gear and its application on ball pulveriser have been presented in this paper.

本文主要介绍了大变位开式齿轮变位系数的计算和在钢球磨煤机上的应用。

8·Owing to the modified error in principle, the manufacturing error and the variation of the load, there still exists the mesh impact in the transmission of modified spur gear.

由于存在修形原理误差、齿轮加工误差以及载荷工况的变化，渐开线修形齿轮在使用中仍会有啮合冲击现象。

9·Analysis of the forming principle of tooth flank of modified type worm gear pair was based on different geometry and spatial engaging theory.

基于微分几何和空间啮合理论，分析了修正型圆环面双包络环面蜗杆副齿面形成原理。

10·Sometimes the worm is modified to envelop the gear. This gives a greater area of contact, but requires extremely precise mounting.

有时把蜗杆齿制成包裹在蜗轮，这就提供了更大的接触面积，但安装精度要求更高了。