| Tool selection and collision-free in 5-axis numerical control machining of free-form surfaces |
| |
| 作者姓名： | 杨长祺 QIN Datong |
| |
| 作者单位： | StateKeyLaboratoryofMechanicalTransmission,ChongqingUniversity,Chongqing400044,P.R.China |
| |
| 基金项目： | Funded by the Doctorate Degree Program Foundation of the Ministry of Education (No. 2000061120) |
| |
| 摘 要： | The methodology of 5-axis cutter selection to avert collision for free-form surface machining by flat-end cutters is presented.The combination of different cutters is adopt aiming at short machining time and high precision.The optimal small cutter is determined based on the geometric information of the points where a cutter most probably collide with the machined surface.Several larger cutters are slected to machine the surface in order to find the interference-free area.The difference of machining time for this area between the optimal small cutter and the large cutters is calculated.The functional relationship between the machining time and the radius of a cutter is established,by which the optimal number of cutters is obtained.The combination of cutters,which possesses the minimum overall machining time,is selected as the optimal cutter sizes.A case study has demonstrated the validity of the proposed methodology and algorithms.
|
| 关 键 词： | 5轴数控加工 自由曲面 最优工具选择 刀具路径规划 |
Tool selection and collision-free in 5-axis numerical control machining of free-form surfaces |
| |
| YANG Changqi,QIN Datong,SHI Wankai State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing,P. R. Chinna.Tool selection and collision-free in 5-axis numerical control machining of free-form surfaces[J].Journal of Chongqing University,2002,1(2):20-23. |
| |
| Authors: | YANG Changqi QIN Datong SHI Wankai State Key Laboratory of Mechanical Transmission Chongqing University Chongqing P R Chinna |
| |
| Institution: | YANG Changqi,QIN Datong,SHI Wankai State Key Laboratory of Mechanical Transmission,Chongqing University,Chongqing 400044,P. R. Chinna |
| |
| Abstract: | The methodology of 5-axis cutter selection to avert collision for free-form surface machining by flat-end cutters is presented. The combination of different cutters is adopt aiming at short machining time and high precision. The optimal small cutter is determined based on the geometric information of the points where a cutter most probably collide with the machined surface. Several larger cutters are selected to machine the surface in order to find the interference-free area. The difference of machining time for this area between the optimal small cutter and the large cutters is calculated. The functional relationship between the machining time and the radius of a cutter is established, by which the optimal number of cutters is obtained. The combination of cutters, which possesses the minimum overall machining time, is selected as the optimal cutter sizes. A case study has demonstrated the validity of the proposed methodology and algorithms. |
| |
| Keywords: | optimal tool selection collision-free tool path generation free-form surfaces flat-end cutter |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《重庆大学学报(英文版)》浏览原始摘要信息 |
| 点击此处可从《重庆大学学报(英文版)》下载免费的PDF全文 |
