A compensation lookup tables (LUTs) scheme is programmed using a CNC's indigenous LUTs capability to virtually correct geometric error parameters of a five-axis machine tool. Using variational kinematics, the geometric errors are forward propagated to the tool tip and the required axis command corrections are obtained in closed form by inverse kinematics. 40 lookup tables and multiplication and summation functionalities compensate ten inter-axis errors and three linear positioning gain errors. Validation tests on a wCAYFXZt topology machine with a 45° angle between the C- and A-axis show significant reductions in dominant geometric errors and a 79% improvement in volumetric errors.

使用 CNC 的本地 LUT 功能对补偿查找表 (LUT) 方案进行编程，以虚拟校正五轴机床的几何误差参数。使用变分运动学，几何误差向前传播到刀尖，并通过逆运动学以闭合形式获得所需的轴指令修正。40 个查找表以及乘法和求和功能可补偿十个轴间误差和三个线性定位增益误差。在 C 轴和 A 轴之间成 45° 角的 wCAYFXZt 拓扑机器上进行的验证测试表明，主要几何误差显着减少，体积误差改善了 79%。