The processing efficiency of dentures is generally quite low due to the complex profile form and high brittleness of the dentures. However, there is little research for efficient path optimization and look-ahead speed control algorithm in denture machining field, which hinders the improvement of the machining efficiency and denture quality. In this work, an optimization method for both straight transition and curve paths was proposed, and look-ahead speed control algorithms for different machining paths were designed. The anomalous points were deleted according to the preprocessing algorithm before the path optimization. The straight transition path and curve path were fitted by the quasi-parabola model and cubic B-spline curve, respectively. The error between the optimized path and original path was analyzed, and the results demonstrated that the path optimization methods were reliable. A look-ahead speed control model based on S-type speed control was proposed, and the boundary conditions for different paths were calculated. The simulated and experimental results indicated that optimized algorithm significantly improved the machining efficiency and reduced the vibration of the machine tool. The accuracy and surface roughness of the denture processed using the optimized algorithm met the medical standard. This work can provide a theoretical guidance for high-efficiency and precision machining of dentures of glass ceramics.

由于假牙的复杂轮廓形式和高脆性，假牙的加工效率通常非常低。然而，在义齿加工领域中对有效路径优化和超前速度控制算法的研究很少，这阻碍了加工效率和义齿质量的提高。在这项工作中，提出了直线过渡和曲线路径的优化方法，并设计了不同加工路径的超前速度控制算法。在路径优化之前，根据预处理算法删除了异常点。直线过渡路径和曲线路径分别通过拟抛物线模型和三次B样条曲线拟合。分析了优化路径和原始路径之间的误差，结果表明，该路径优化方法是可靠的。提出了一种基于S型速度控制的超前速度控制模型，并计算了不同路径的边界条件。仿真和实验结果表明，优化算法显着提高了加工效率，降低了机床的振动。使用优化算法处理的义齿的精度和表面粗糙度符合医学标准。这项工作可以为玻璃陶瓷假牙的高效和精密加工提供理论指导。仿真和实验结果表明，优化算法显着提高了加工效率，降低了机床的振动。使用优化算法处理的义齿的精度和表面粗糙度符合医学标准。这项工作可以为玻璃陶瓷假牙的高效和精密加工提供理论指导。仿真和实验结果表明，优化算法显着提高了加工效率，降低了机床的振动。使用优化算法处理的义齿的精度和表面粗糙度符合医学标准。这项工作可以为玻璃陶瓷假牙的高效和精密加工提供理论指导。