Optimization of Bending Process Parameters for Seamless Tubes Using Taguchi Method and Finite Element Method

Table 1

Control factors and levels.

Factors		Levels
		1	2	3
A	Feed axis strokes 1, 2	135 mm	140 mm	—
B	Feed axis stroke 3	110 mm	115 mm	120 mm
C	Rotation axis stroke 1	−245°	−250°	−255°
D	Rotation axis stroke 2	−225°	−230	−235°
E	Rotation axis stroke 3	−75°	−80°	−85°
F	Bending axis stroke 1	45.5°	46°	46.5°
G	Bending axis stroke 2	46.5°	47°	47.5°
H	Bending axis stroke 3	48°	48.5°	49°