Development of CAM system installed in CNC controller to achieve flexible and dynamic machining operations

开发安装在 CNC 控制器中的 CAM 系统，实现灵活动态的加工操作

• 批准号: 13650278
• 负责人: SHIRASE Keiichi
• 金额: $ 2.18万
• 依托单位: Osaka University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650278/
• 关键词: NC machine tool; Autonomous machining; Intelligent NC machine tool; Operation planning; CAM; Machining feature; Machining shape simulator; End milling operation; 知能型・自立型NC工作機械; 加工形状シュミレータ

For the target CAM system installed in CNC controller, (i) The operation planning module to adapt operation sequence and cutting tools, (ii) The simulation module to recognize machined shape during machining operation, and (iii) The real time tool path generation module to achieve flexible and dynamic machining operations, are developed in this study.(i) The operation planning module to adapt operation sequence and cutting toolsThe total removal volume is detected from 3D CAD models of a raw material shape and a final machined shape. The total removal volume is divided into several machining features in three ways for different geometrical consideration. The operation sequence is derived from the geometrical relations among the machining features. The cutting tool is selected according to the machining feature detected. The cutting conditions are determined by referring the past cutting case data.(ii) The simulation module to recognize machined shape during machining operationA machine … More d shape during machining operation can be detected by successive Boolean subtractions between 3D solid models of a workpice and a tool swept volume. The tool swept volume equals the space occupied by the cutting tool in motion. In case of cutting trouble such as tool breakage, the machined shape during machining operation is available to use as a raw material shape for a new operation planning.(iii) The real time tool path generation module to realize flexible and dynamic machining operationTool paths can be generated in real time by the digital copy milling system which is developed for this module. In the digital copy milling system, a stylus and a master model are defined as geometrical surface models of 3D CAD, the stylus motion corresponding to the tool motion is generated based on copy milling principle. The tool motion can be changed dynamically during machining operation without any NC program.NC programless milling of sculptured surface has been achieved by the CAM system which consists of those three modules. Based on a 3D CAD model of machined shape, suitable tool paths and cutting conditions can be determined without any NC program to achieve flexible and dynamic machining operation. Less

对于CNC控制器中安装的目标CAM系统，（i）调整操作序列和切割工具的操作计划模块，（ii）在加工操作过程中识别机加工形状的模拟模块，以及（iii）实时工具路径生成模块，以实现灵活和动态的机加工操作，在本研究中开发了材料和切割工具的材料。最终的加工形状。总去除量分为几个加工特征，以三种方式进行不同的几何考虑。该操作序列源自加工特征之间的几何关系。根据检测到的加工功能选择切割工具。切割条件是通过引用过去切割案例数据来确定的。（ii）在加工操作机器机器机器过程中识别加工形状的模拟模块可以通过成功的布尔下减法来检测到工程的3D实心模型与工具扫描体积之间的Boolean减法。该工具扫描的音量等于运动中的切割工具所占据的空间。如果切割诸如工具破裂之类的麻烦，则可以将加工操作过程中的加工形状用作新操作计划的原材料形状。（iii）实时工具路径生成模块可以通过为该模块开发的数字复制铣削系统实时生成灵活而动态的加工操作操作路径。在数字复制铣削系统中，手写笔和主模型定义为3D CAD的几何表面模型，基于复制铣削原理生成了与工具运动相对应的手写笔运动。无需任何NC程序即可在加工操作过程中动态更改工具运动。NC无计划的雕刻表面铣削是由由这三个模块组成的CAM系统实现的。基于加工形状的3D CAD模型，可以在没有任何NC程序的情况下确定合适的工具路径和切割条件，以实现灵活而动态的加工操作。较少的