A Recognition Methodology for the Key Geometric Errors of a Multi-Axis Machine Tool Based on Accuracy Retentivity Analysis

Table 5

Weight coefficients of the geometric error terms based on feature extraction.

Error	Parameters	Weight index
δxx	1	1.23
δyx	2	2.06
δzx	3	1.59
εxx	4	3.84
εyx	5	1.81
εzx	6	3.99
δxy	7	2.17
δyy	8	2.01
δzy	9	1.04
εxy	10	3.38
εyy	11	1.49
εzy	12	1.51
δxz	13	1.93
δyz	14	2.86
δzz	15	1.50
εxz	16	3.07
εyz	17	1.47
εzz	18	1.75
δxb	19	2.81
δyb	20	1.79
δzb	21	1.95
εxb	22	1.96
εyb	23	1.69
εzb	24	1.46
γxy	25	3.74
βxz	26	2.48
αyz	27	3.62
αyb	28	2.19
γyb	29	1.93
δzby	30	2.05