主动螺旋伞齿轮双向镦挤精密成形试验

发布时间：2018-01-21 20:34

本文关键词： 主动螺旋伞齿轮精密成形双向镦挤数值模拟物理模拟　出处：《锻压技术》2017年12期 　论文类型：期刊论文

【摘要】：为实现主动螺旋伞齿轮精密成形,并克服现有工艺存在的轮齿角隅填充欠饱满、模具结构复杂、成形力大等不足,根据"积极摩擦"原理采用了一种双向镦挤闭塞模锻新工艺。以一种齿数为10的主动螺旋伞齿轮为研究对象,分析了成形工艺特点并创建了三维模型,利用Deform-3D对成形过程进行数值模拟,得到载荷-行程曲线,结果表明,变形过程可划分为自由变形、大变形、充满3个阶段。与单向镦挤对比,双向镦挤的大、小端载荷值分别降低了14%和30%;并对所获等效应力、等效应变等信息进行了分析,为模具设计优化提供了依据。通过物理模拟试验,得到了无飞边、齿形充填饱满、轮廓清晰、无折叠和开裂等缺陷的铅质主动螺旋伞齿轮。
[Abstract]:In order to realize the precision forming of the active spiral bevel gear, and to overcome the shortcomings of the existing technology, such as the underfilling of the corner corner of the gear teeth, the complex structure of the die and the large forming force, etc. According to the principle of "active friction", a new technology of bi-directional upsetting and extruding closed die forging is adopted. Taking a kind of active spiral bevel gear with tooth number of 10 as the research object, the characteristics of forming process are analyzed and a three-dimensional model is created. Deform-3D was used to simulate the forming process, and the load-stroke curve was obtained. The results show that the deformation process can be divided into three stages: free deformation, large deformation and full of three stages. The load values of large and small ends of bidirectional upsetting were reduced by 14% and 30 respectively. The information of equivalent stress, equivalent strain and so on are analyzed, which provides the basis for the optimization of die design. Through the physical simulation test, it is obtained that there is no flash edge, the tooth shape is full and the outline is clear. Lead active spiral bevel gears without folding and cracking defects.
【作者单位】：南昌大学机电工程学院;
【基金】：江西省发明专利研发引导项目(20143BBM26105) 江西省教育厅科技计划项目(GJJ13192)
【分类号】：TG316
【正文快照】： 螺旋伞齿轮在汽车、航空航天、航海、工程机械、机床等领域属于核心零部件[1-2],其质量的好坏直接影响整机的性能[3]。这就要求开发更能保证质量、更高效、更节材的加工方法。齿轮精密成形是指锻造出完整齿形而不需后续切削加工或仅留有精加工余量[4-5]。与切削加工相比,精密

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