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生产自动化是先进制造技术的发展方向之一，而可靠的数控程序是实现自动化的重要保证，针对当前数控程序检证算法的不足，提出了一种基于观察坐标系的长方体单元表示法，在精度要求范围内对工件和刀具进行近似表示，将复杂的三维布尔运算简化为一维的布尔运算，从而在微机上实现了多轴数控加工过程仿真，并提高了仿真速度，该算法通过了实验验证．
Production automation is one of the development directions of advanced manufacturing technology. Reliable NC program is an important guarantee to realize automation. Aiming at the shortcomings of current NC program verification algorithm, a rectangular cube unit representation based on observation coordinate system is proposed, The requirements of the workpiece and the tool within the approximate representation, the complexity of the three-dimensional Boolean operation is reduced to one-dimensional Boolean operation, which in the computer to achieve a multi-axis CNC machining process simulation and improve the simulation speed, the algorithm passed the experimental verification .