Fig.1

Diagram of a feature flanging part

Fig.2

Rolling path of multi pass flanging

Fig.3

σT-εT and fitting curves of 5A06-O aluminum alloy

Fig.4

Grid division of sheet in different areas

Fig.5

Assembly diagram of simulation model

Fig.6

Motion path of roller

Fig.7

Feature flanging part obtained by simulation

Fig.8

Cloud diagram of equivalent plastic strain after flanging

Fig.9

Mises stress of each part at point B

Fig.10

Cloud chart of Mises stress distribution on flanging part

Fig.11

Stress of flanging part in deformation zone

Fig.12

Cloud chart of maximum principal stress distribution on outer edge of flanging part

Fig.13

Die clearance of flanging part

Fig.14

Calculation of die clearance

Fig.15

Simulation of die clearance distribution on feature part

Tab.3

Selected values of factors

Tab.4

Orthogonal text design of flexible flanging process

Tab.5

Simulation of die clearance under different test conditionsmm

Tab.6

Average value of die clearance by orthogonal test

Fig.16

Average value of die clearance versus different process parameters

Tab.7

Standard deviation of die clearance by orthogonal testmm

Fig.17

Standard deviation of die clearance versus different process parameters

Fig.18

Optimization results of process parameters

Fig.19

Test system of robot flexible flanging

Fig.20

Gauge for measuring die clearance

Tab.8

Die clearance of text and simulation

Fig.21

Die clearance curves of text and simulation