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

Table 4

The residual value of the 27 verification points’ errors.

Residual value		(μm)			(μm)			(μm)
		∆x	∆y	∆z	∆x	∆y	∆z	∆x	∆y	∆z
		0.770	0.320	0.580	−0.630	−0.460	−0.680	0.550	−0.420	0.190
		0.750	0.460	0.290	−0.780	0.250	−0.410	−0.760	0.340	0.450
		0.880	−0.330	−0.330	0.440	−0.220	−0.660	−0.390	0.380	−0.330
		−0.750	0.140	−0.440	0.670	0.310	0.510	0.340	0.430	0.350
		−0.830	−0.320	−0.260	0.340	−0.230	−0.250	0.780	0.340	−0.240
		0.140	−0.530	0.310	−0.450	0.340	0.440	0.310	−0.320	−0.530
		0.750	0.540	0.320	−0.680	0.450	−0.580	0.690	−0.160	0.350
		0.180	0.410	0.570	−0.610	0.240	−0.620	−0.360	0.230	0.670
		−0.350	−0.230	0.360	0.580	−0.420	−0.210	−0.860	0.520	0.210