Machining chatter simulation in multi-axis milling using graphical method
Machining chatter simulation in multi-axis milling using graphical method
复制标题
使用图形方法模拟多轴铣削中的加工颤振
DOI：
10.1016/j.ijmachtools.2008.09.002
复制
发表时间：
2009
影响因子：
14
通讯作者：
F. Ismail
中科院分区：
文献类型：
--
作者：
S. Khachan;F. Ismail
在这项工作中，开发了一种计算机图形方法，用于多轴铣削中颤振的时域模拟。新的颤振模拟方法基于 Roth、Ismail 和 Bedi 的局部自适应深度缓冲方法 [Mechanistic modelling of the milling process using a Adaptive Depth buffer, CAD 35 (4) (2003) 1287–1303;Mechanistic modelling of the milling process using Complex tool Geometry, Journal of Advanced Manufacturing Technology 25 (1–2) (2005) 140–144]，该方法最初是为计算切削力而开发的。刚性工具。在当前的工作中，考虑了工具尖端的动态特性以及再生机制。给出了所提出方法的实现细节。讨论了像素大小与振动幅度和频率相关的图形方法的局限性。图形颤振模拟方法与传统的数值模拟方法一致。它还在一维以及同步三轴加工中进行了实验验证。在三轴测试中，刀具/工件的啮合沿刀具路径变化。
In this work, a computer graphics approach is developed for time-domain simulation of chatter in multi-axis milling. The new chatter simulation method is based on the local adaptive depth buffer method of Roth, Ismail, and Bedi [ Mechanistic modelling of the milling process using an adaptive depth buffer, CAD 35 (4) (2003) 1287–1303;Mechanistic modelling of the milling process using complex tool geometry, Journal of Advanced Manufacturing Technology 25 (1–2) (2005) 140–144] that was originally developed to calculate the cutting forces for a rigid tool. In the current work, the dynamic characteristics at the tool tip as well as the regeneration mechanism are accounted for. Implementation details of the proposed method are given. Limitations of the graphical method imposed by the pixel size in relationship to the vibration amplitude and frequency are discussed. The graphical chatter simulation approach is shown to agree with the traditional numerical simulation method. It is also experimentally verified in one dimension as well as simultaneous three-axis machining. In the three-axis test, the tool/workpiece engagement varied along the tool path.