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摘要：
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基于约束分流原理,以某厂生产的减速小齿轮为例,采用数值模拟和物理试验相结合的方法,对直齿圆柱齿轮精锻成形工艺进行了深入研究。通过分析小芯棒约束分流和凸缘分流两种方案下坯料孔径的大小对直齿圆柱齿轮成形过程的影响,确定出可以改善充填性与降低工作载荷的最佳工艺方案:浮动凹模下坯料尺寸为直径38 mm、孔径16 mm、高度27.3 mm的小芯棒约束分流与固定凹模下坯料尺寸为直径38 mm、孔径18 mm、高度25.5 mm的凸缘分流。由小芯棒约束分流浮动凹模形式下的力-行程曲线可知,试验结果与有限元数值模拟结果能很好地吻合。
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Taken a small reduction gear as an example,based on the principle of restrained distributary,precision forging process of spur gears was studied by the method of numerical simulation and physical experiment.Through the analysis of the influences of the blank aperture size to spur gears forming process on small mandrel restrained distributary and lugs distributary the optimised processes of improving filling and reducing load were determined.For the small mandrel distributary in the form of movable container,and the blank size is of 38 mm(diameter),16 mm(aperture),27.3 mm(height) and lugs distributary in the form of fixed container,and the blank size is of 38 mm(diameter),18 mm(aperture),25.5 mm(height).From the curve of load and stroke in the movable container of small mandrel distributary,the experiment results are commendably in accordance with the simulated results.
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基金项目：
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江西省教育厅科学技术研究资助项目(DB200701053)
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作者简介：
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参考文献：
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