摘要
提出了一种提高扫略曲面三坐标加工速度的优化方法;在曲面加工中,经常使用比较昂贵的商业CAD/CAM软件来生成加工程序,对刀具位置和路径规划进行大量的计算;由于这些商业软件都基于一种比较可靠的算法,所以在功能上都具有相似的功能和效率;也就是说,现在使用的大多数的CAD/CAM系统,都是基于零件的几何特征来加工的;文中提出了主要集中在提出一种基于被加工零件精度自由曲面刀具路径生成方法,推导出前进步距函数,在给定加工误差和没有损失加工精度的情况下,计算出最大的CC(刀具接触点)点间的距离,来减少生成的CC点,减少加工时间,提高了加工效率。
In this paper, an NC data optimization approach for enhancing 3 axis machining speed of free-form surface of cross sectional design is presented. It is usual to use expensive commercial CAD/CAM programs for NC data of 3-axis machining, since it needs very large calculations for tool positioning and tool path planning. Since commercial CAD/CAM systems have similar functions and efficiency based on common algorithms of reliable theories, they do not have their own unique features for machining speed and efficiency. In other words, most commercial CAD/CAM systems consider only the characteristics of part geometry to be machined, which means that they generate almost the same NC data if the part to be machined is the same, even though different machines are used for the part. This paper focuses on developing algorithms that generate tool paths for free-form surfaces based on the accuracy of a desired manufactured part, and developing the forward -step function which determines the maximum distance, between two cutter contact （CC） points with a given tolerance. As a result, the speed of machining can increase without losing machining accuracy and surface quality.
出处
《计算机测量与控制》
CSCD
北大核心
2009年第10期2059-2061,2084,共4页
Computer Measurement &Control
