基于MasterCAM方法的圆柱齿轮的数控加工工艺研究

发布时间：2018-03-23 00:00

本文选题：齿轮加工　切入点：五轴加工　出处：《长安大学》2017年硕士论文　论文类型：学位论文

【摘要】：齿轮的主要作用是传递运动和动力,它对现代工业的发展起到了重要作用。大型齿轮的种类繁多,常见的主要包括圆柱齿轮、斜齿轮、圆锥齿轮等。对于结构简单的大型齿轮,最常用的加工方法有仿形法铣齿轮、滚齿加工和插齿加工等;但是对于形状复杂、尺寸庞大的齿轮而言,会存在诸多加工难题:一方面普通设备很难保证加工出来的质量能满足要求;另一方面尽管这类齿轮的需求量不大,但其加工往往需要在专用的设备上进行。这些都使得大型齿轮在五轴加工中心中的应用越来越多。在五轴加工中心中,我们可以通过计算机辅助设计(CAD)进行零部件的结构设计、零件建模、应力分析等,也可以通过计算机辅助制造(CAM)进行模拟走刀、实体仿真、实际加工等,为机械产品的生产提供了诸多便利。MasterCAM作为机械产品的仿真软件,可以识别多种建模软件的文件,如UG、Solidworks、Proe、Inventor等,同时自身还具备二维绘图、三维建模、图形分析等功能。而且MasterCAM简单易学,具有良好的人机交互式页面,能同时兼容多种机床、同时提供了一个强大的刀具系统库,实用价值高。五轴加工中心可以加工任意一种齿轮。本文中,以一个常用的直齿圆柱齿轮为例:先对其进行实体模型,然后利用MasterCAM软件设置其加工过程中的各个参数,最后得出齿轮加工的轨迹图,以获得最优路径。我们可以进行图形模拟仿真,也可进行实体模拟仿真,及时查看加工过程中的走刀是否有错误以便及时改正。最后可以生成加工中心能够识别的NC程序代码,对实际的生产加工提供了参考依据。
[Abstract]:The main role of gears is to transfer motion and power, it has played an important role in the development of modern industry. There are many kinds of large gears, such as cylindrical gears, helical gears, bevel gears and so on. The most commonly used machining methods are copying milling gears, hobbing and gear shafting, etc., but for gears with complex shapes and large sizes, There are many processing problems: on the one hand, it is difficult for ordinary equipment to ensure that the quality of the finished gear can meet the requirements; on the other hand, despite the small demand for such gears, But it often needs to be processed on special equipment. All of these make the large gears more and more used in the five-axis machining center. In the five-axis machining center, we can design the structure of the parts by computer aided design (CAD). Part modeling, stress analysis, and so on, can also be simulated by computer aided manufacturing (CAM), physical simulation, actual processing, etc., which provides many convenience for the production of mechanical products. Mastercam is used as the simulation software of mechanical products. It can recognize the files of many kinds of modeling software, such as UGG solid workstations ProeInventor and so on. At the same time, it also has the functions of 2D drawing, 3D modeling, graphic analysis and so on. Moreover, MasterCAM is simple and easy to learn, it has good human-computer interactive page, and it can be compatible with many machine tools at the same time. At the same time, a powerful tool system library is provided, which is of high practical value. The five-axis machining center can process any kind of gear. In this paper, a commonly used spur cylindrical gear is taken as an example: first, the solid model of the gear is carried out. Then the MasterCAM software is used to set the parameters in the machining process, and finally, the trajectory diagram of the gear machining is obtained to obtain the optimal path. We can carry out the graphic simulation simulation, or the entity simulation simulation. The NC program code which can be recognized by the machining center can be generated in the end, which provides a reference for the actual production and processing.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TG659;TG61

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