Modeling and Prediction Method for CNC Machine Tools’ Errors Based on Spatial Feature Points

Table 2

The verification points’ prediction errors.

Predictive value		(μm)			(μm)			(μm)
		Cx	Cy	Cz	Cx	Cy	Cz	Cx	Cy		Cz
		2.140	0.210	0.290	−5.240	17.440	−23.230	−10.870	24.350		−28.510
		−0.520	7.690	−9.920	−6.810	18.290	−26.170	−13.250	27.920		−31.860
		−1.970	10.610	−20.340	−9.040	19.170	−28.420	−14.920	40.030		−35.750
		0.820	10.070	4.130	−3.120	19.130	−23.090	−11.990	28.660		−31.170
		−1.160	11.540	−4.890	−5.130	19.870	−24.960	−12.810	40.190		−32.490
		−1.980	16.120	−13.480	−8.730	24.380	−27.140	−14.950	42.810		−34.180
		3.170	15.120	−5.210	−3.620	20.240	−24.150	−9.770	38.040		−35.230
		1.320	19.460	−13.780	−5.140	22.610	−27.210	−13.270	41.040		−36.890
		−2.210	19.380	−22.940	−6.870	30.190	−31.360	−15.280	49.140		−37.540