发布时间:2012/11/19 10:57:53 作者:李素云,胡正西 【字体:
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李素云,胡正西
(贺州学院,广西 贺州 542899)
摘要:相对于标准齿轮,变位齿轮具有配凑中心距、避免根切、使机构结构紧凑等优点,但设计计算复杂,模型很难精确建立。基于变位齿轮的变位特点、加工原理及渐开线齿廓的参数化方程,结合实例,利用Pro/E中拉伸、阵列等参数化建模方法,建立齿顶圆、分度圆、齿根圆、基圆等几何参数与模数、齿数及压力角等基本参数的关系,实现变位齿轮的三维参数模型的精确建立;通过修改相应的设计参数及关联关系式,能够实现不同变位系数齿轮的快速造型,同时避免复杂的尺寸计算和重新建模的过程,提高了设计效率。
关键词:变位齿轮;参数化建模;Pro/E;变位系数
中图分类号:TH132.41 文献标识码:A 文章编号:1006-0316 (2012) 11-0045-04
Research on the method of molding of parameterc for modified gear based on Pro/E
LI Su-yun,HU Zheng-xi
( Hezhou University, Hezhou 542899, China )
Abstract:Relative to standard gear , the variable gear is used to form centre distance and prevent tooth undercutting, but it is difficult to build model,design and calculate for variable gear .Based on variable-bit features, processing principle and parametric equation of involute tooth profile, 3D parameterized model is not built accurately by building the relationship between the geometric parameters (such as addendum circle , dedendum circle, base circle) and basic parameters ( such as module, pressure angle ) in this paper. Only changing relevant parameter relational expressions,it can carry out automatically modeling of various displacement coefficient and avoid calculating complex dimensions and re-modeling. At the same time the design efficiency is raised.
Key words:modified gear;parametric modeling;Pro/E;displacement coefficient
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收稿日期:2012-02-27
基金项目:2011广西自然科学基金面上项目(2011GXNSFA018038)
作者简介:李素云(1974-),女,山东菏泽人,硕士,讲师,主要研究方向为机械CAD/CAM、机械设计;胡正西(1976-),男,湖南永州人,博士,副研究员,主要研究方向为金属材料、虚拟样机技术。