Fabrication Improvement of Cold Forging Hexagonal Nuts by Computational Analysis and Experiment Verification

Table 3

Comparison of the dimension between the simulation and actual forging parts.

Stage	First stage		Second stage		Third stage		Fourth stage		Fifth stage
Dimension	Diagonal	Thickness	Diagonal	Thickness	Diagonal	Thickness	Diagonal	Thickness	Diagonal	Thickness
Specification	—	—	—	—	—	—	—	—	14.38 Min.	6.14/6.50
Simulation (mm)	12.89	6.69	13.90	6.42	14.33	6.41	14.33	6.41	14.79	6.67
Experiment (mm)	13.80	6.58	13.68	6.06	14.15	6.09	14.40	6.28	14.62	6.38
Error (%)	−6.6	1.7	1.6	5.9	1.3	5.3	−0.5	2.1	1.2	4.5