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Development of Advanced Machine Tool to Realize Autonomous Machining Operation Unconstrained by NC program

开发先进机床实现不受NC程序约束的自主加工操作

基本信息

批准号：
13555035
负责人：
SHIRASE Keiichi
金额：
$ 6.91万
依托单位：
Kobe University (2003)Osaka University (2001-2002)
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2003
项目状态：
已结题

项目摘要

Required functions for an advanced NC machine tool, which realizes autonomous machining operation unconstrained by NC program, have been developed. Following experimental verifications were performed successfully.1. Direct machining operation controlled by flexible process and operation planning systemA flexible process and operation planning system was developed to generate cutting parameters dynamically for flexible machining operation. The flexible process and operation planning system can generate the production plan from the Total Removal Volume (TRV). The TRV is extracted from initial and finished shapes of the product represented as 3D CAD models. In additional, a technique called digital copy milling was developed to control the NC machine tool in real time. A prototype of autonomous machine tool was implemented, and the experimental cutting tests were carried out successfully.2. Intelligent monitoring to recognize machining conditionsA virtual machining simulator, which predic … More ts cutting torque in real time, was developed. In addition, a monitoring technique, which detects actual cutting torque by detecting the control signals in NC controller, was developed. In the intelligent monitoring system developed, the actual cutting torque can be compared with the predicted one. The comparison of the actual and predicted, torques during machining operation is very helpful to detect machining trouble or recognize machining conditions.3. Adaptive control of cutting parameters to keep stable machining operationThe digital copy milling system developed can generate the tool paths in real time and it permits to change the cutting parameters during the machining operation. In addition, a control algorithm to change cutting parameters for avoiding machining trouble and keeping stable machining operation was proposed. An adaptive control system, which is integrated the digital copy milling system and the control algorithm, was implemented. In the experimental cutting tests, not only the feed speed but also the axial and radial depths can be changed suitably to keep stable machining operation. Less

开发了先进数控机床所需的功能，实现了不受数控程序约束的自主加工。成功地进行了以下实验验证.柔性工艺与操作规划系统控制的直接加工柔性工艺与操作规划系统是为实现柔性加工而开发的动态切削参数生成系统。灵活的工艺和操作计划系统可以从总去除量（TRV）生成生产计划。TRV是从表示为3D CAD模型的产品的初始和成品形状中提取的。此外，开发了一种称为数字仿形铣削的技术，用于对数控机床进行真实的实时控制。实现了自主机床的样机，并成功进行了实验切削试验.智能监控以识别加工状态--虚拟加工仿真器， ...更多信息 ts切削扭矩的真实的时间，开发。此外，开发了一种通过检测数控控制器中的控制信号来检测实际切削扭矩的监测技术。在所开发的智能监测系统中，可以将实际切削扭矩与预测扭矩进行比较。加工过程中的实际扭矩与预测扭矩的比较，对于发现加工故障或识别加工状态是非常有帮助的.切削参数的自适应控制，以保持稳定的加工操作开发的数字仿形铣削系统可以产生真实的时间的刀具轨迹，它允许改变切削参数在加工过程中。提出了一种改变切削参数的控制算法，避免了加工故障的发生，保证了加工的稳定性。将数字仿形铣削系统与控制算法相结合，实现了自适应控制系统。在实验切削试验中，不仅可以适当地改变进给速度，而且可以适当地改变轴向和径向深度，以保持稳定的加工操作。少