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Studies on Precision Grinding of Internal Gears and Internal Speed Changers

内齿轮及内变速器精密磨削研究

基本信息

批准号：
04650136
负责人：
ISHIBASHI Akira
金额：
$ 1.09万
依托单位：
Saga University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1993
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04650136/
关键词：
Machine element Gear Internal gear Planetary gear Gear grinder Gear noise Traction drive Efficiency

项目摘要

An internal gear grinder was produced by improving the mechanism of a CNC (computer numerically controlled) external gear grinder which was previously designed and made by the present investigators. The form grinding wheel for internal gears was trued automatically on the gear grinder using the servo-motors and a dresser with a single diamond grain. Internal gears with a module of 4, 60 teeth and a face-width of 50 mm were finished on the trial internal gear grinder. Moreover, the external gears to be used for the sun and planetary gears were finished by the trial gear grinder. Power transmission efficiency of the internal gear drive with these gears is higher than 98% because the speed reduction ratio is not high and contains no differential mechanism.Two kinds of differential gear drives were designed and made to increase the reduction ratio, and running tests were conducted. Moreover some gears in the internal gear train of an automatic transmission of a passenger car were ground an … More d the effects of grinding on the running noise and power transmission efficiency were examined.The trial internal gear drives was high in the efficiency, but running noise was not low as expected. As hopeful high performance internal gear drives, internal hybrid reducer were designed and made, in which one of the two internal gears was replaced by a ring roller and the sun and planetary rollers were used instead of the gears. These hybrid reducers produced appreciably lower running noise than the internal gear drives because the shock loading between teeth is modified by the oil film between the rollers.However, it should be noted that the power transmission capacity of the hybrid reducers is lower than the internal gear drives when the sizes of the gear boxes are assumed to be constant. Therefore, further systematic investigation is required to reduce the running noise of internal gear drives in the field of the design and manufacturing method in gear systems together with gear grinding technology. Less

通过对自行设计制造的计算机数控外齿轮磨齿机进行机构改进，研制出一种内齿轮磨齿机。内齿轮成形砂轮在磨齿机上利用伺服电机和带单颗金刚石颗粒的修整器自动修整。在试制的内齿轮磨床上加工出模数为4，60齿，面宽为50 mm的内齿轮。此外，在试验磨齿机上完成了用于太阳的外齿轮和行星齿轮的加工。针对减速比不高且不含差动机构的内齿轮传动动力传动效率高于98%的问题，设计制造了两种提高减速比的差动齿轮传动，并进行了运行试验。此外，一辆客车自动变速器的内齿轮系中的一些齿轮被磨碎了…进一步考察了磨削对运行噪声和功率传输效率的影响，试验的内齿轮传动效率较高，但运行噪声并不像预期的那么低。为了满足高性能内齿轮传动的需要，设计并制造了内混合减速器，其中两个内齿轮中的一个用一个环形滚子代替，用太阳滚子和行星滚子代替齿轮。这些混合减速器产生的运行噪声比内部齿轮传动低得多，因为齿间的冲击载荷被滚子之间的油膜所修正。但需要注意的是，当齿轮箱的尺寸保持不变时，混合减速器的功率传输能力低于内部齿轮传动。因此，在齿轮系统的设计和制造方法以及磨齿技术方面，需要进一步系统地研究降低内齿轮传动的运行噪声。较少