为了快速获取牙齿模型的数字型面信息，提出一种基于三轴联动平台的数字化牙模激光扫描系统．该系统基于光机电一体化技术和三维数据处理技术实现了牙齿模型三维型面信息提取和牙齿模型的造型设计．系统由线结构光视觉传感器、三轴联动平台、电气控制系统、主控计算机及上位机软件组成．通过线结构光视觉传感器和三轴联动平台的协调控制实现牙齿模型的无缝数据获取．实验结果表明，该数字化牙模激光扫描系统的测量精度可达0．182mm，速度为8000点／s．该系统扫描速度快、测量精度较高、操作灵活方便，可以满足牙模三维型面数据采集的要求．%In order to quickly obtain the 3D digital surface of the dental wax, an original design and achievement of a novel digital laser dental scanning system is introduced based on three - axis platform. 3 D surface and design of Dental model are implemented by the presented system which integrates optical, mechanical, electronic technologies, data processing technology and so on. The system consists of laser probe, three - axis platform, electronic control system, master computer and system software. 3D point cloud of Dental wax without any blind point can be scanned through controlling line structured light vision sensor and three - axis platform in phase. Experiment demonstrates that the scanning precision of the system is 0. 182mm, scanning speed is 8 000 pts/s. Therefore, the system works fast with high accuracy, its operation is simple and flexi- ble, so it can meet requirements of collecting 3D surface of the dental wax.
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