Knowledge Service Technology for Supporting Intelligent Product Design

Table 3

Similarity measurement of the performance requirements of the CNC tool holder.

Index	Data type	Matching level	Weight coefficient	New case X	Case Y in the library	Global similarity
Tool holder model	CS	Primary	—	SLT	SLT	1
Tool holder configuration	CS			Front	Front	1
Power source	CS			Servo motor	Servo motor	1
Center height (mm)	CN	Auxiliary	0.12	80	125	0.084
Stations’ count (N)	CN		0.12	8	12	0.080
Net weight (without cutter head)	FL		0.06	Light	Medium	0.003
Turn 30° and lock (S)	FN		0.11	0.3	0.41	0.049
Turn 180° and lock (S)	FN		0.11	0.6	0.86	0.052
Repeat positioning accuracy (mm)	FI		0.12	<0.003	<0.003	0.120
Maximum unbalanced moment (Nm)	CN		0.1	30	50	0.080
Maximum tangential moment (kNm)	CN		0.1	1.51	3.6	0.079
Maximum axial torque (kNm)	CN		0.1	1.62	3.40	0.082
Maximum load (kg)	CN		0.06	90	230	0.003
Total	—	—	1	—	—	0.632