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Study on smint NC processor which includes milling process model for process prediction to buill the next generation of machine tools

smint NC 处理器的研究，其中包括用于过程预测的铣削过程模型，以构建下一代机床

基本信息

批准号：
17360063
负责人：
SHIRASE Keiichi
金额：
$ 9.43万
依托单位：
Kobe University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-17360063/
关键词：
Milling process model Voxel model Milling simulation Intelligent machine tool Reactive scheduling NC processor CAD CAM CAE

项目摘要

1. Machining shape simulator based on Voxel modelIn order to predict the change of material shape during machining operation, a machining shape simulator based on the Voxel model was developed. By introducing the Oct-tree structure into the Voxel model to represent a material shape precisely, the total amount of the Voxel (memory usage of the computer) can be reduced to realize a practical machining shape simulation. Moreover. the machining shape simulation of five-axis controlled machining can be achieved successfully utilizing the feature of the Voxel model.2. Cutting force simulator of endmilling operationIn order to predict the change of cutting force during machining operation, a cutting force simulator for endmilling operation was developed. It was verified that the predicted cutting forces in several cutting conditions have good agreement with the measured one for both the square end mill and the ball end mill. In addition, a virtual machining simulation, which shows the change … More of material shape and cutting force during milling operation. was achieved.3. Process planning support system for 5-axis machine toolIn order to utilize the performance of 5-axis machine tools effectively a process planning support system, which assists to determine the suitable tool posture for 5-axis machine tools, was developed. The process planning support system is designed to perform the collision check and the tool path generation quickly by applying Voxel model expression of the material and the tooling shapes. It is verified that the suitable tool posture for 5-axis machine tools can be determined effectively.4. Reactive scheduling utilizing for autonomous machine toolIn order to achieve flexible operation of the autonomous machine tool with a smart NC processor, a reactive scheduling system which is able to change the machining operation schedule dynamically according to the observed situation of machine tools was developed. It was confirmed that the machining operation schedule was flexibly updated to the change and the difference of operation times by the computational experiment. Less

1.基于体素模型的加工形状模拟器为了预测材料在加工过程中的形状变化，开发了基于体素模型的加工形状模拟器。通过在体素模型中引入八叉树结构来精确地表示材料形状，可以减少体素的总量（计算机的内存使用量），以实现实际的加工形状模拟。而且。利用体素模型的特点，成功实现了五轴联动加工的加工形状仿真.为了预测切削力在加工过程中的变化，研制了一种端铣切削力模拟器。结果表明，无论是方头铣刀还是球头铣刀，在几种切削条件下的切削力预测值与实测值吻合较好。此外，还进行了虚拟加工仿真， ...更多信息材料形状和切削力的影响。3.被解雇。五轴机床的工艺规划支持系统为了有效地利用五轴机床的性能，开发了一个辅助确定五轴机床合适刀具姿态的工艺规划支持系统。该工艺设计支持系统通过应用材料和刀具形状的体素模型表达，实现了快速碰撞检查和刀具轨迹生成。验证了该方法可以有效地确定五轴机床的刀具位姿.自主机床的反应式调度为了实现智能数控加工器下自主机床的柔性操作，开发了一种反应式调度系统，该系统能够根据观察到的机床状况动态地改变加工作业计划。通过计算实验证实了加工作业计划能够根据作业时间的变化和差异灵活更新。少