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The effect of extrusion direction on the forming quality in CNC incremental forming with multidirectional adjustment of sheet posture

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Abstract

In the CNC incremental forming, the forming quality will be different with the different extrusion direction. The effects of the different extrusion directions on the forming quality in the CNC incremental forming with the multidirectional adjustment of sheet postures were studied by using three extrusion directions: parallel to the Z-axis, perpendicular to sheet surface and perpendicular to the surface to be formed. The algorithm for calculating the inclination angle of the extrusion tool and determining the extrusion direction vector in the multidirectional adjustment environment of sheet postures was presented. The feasibility of the algorithm was verified by an application example. The equivalent plastic strains under the three extrusion directions were analyzed through the numerical simulation. At the same time, the contour accuracy, thickness reduction and thickness distribution were compared and analyzed through the CNC incremental forming experiment with the multidirectional adjustment of sheet postures under the three extrusion directions.

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Abbreviations

α, β :

The rotation angles of the extrusion tool

v :

The direction vector of the extrusion tool

v x :

The components of the extrusion direction vector in the X-axis directions

v y :

The components of the extrusion direction vector in the Y-axis directions

v z :

The components of the extrusion direction vector in the Z-axis directions

N :

The normal vector of the triangular patch

Fi (i = 1,2,…, 12):

The force of the extrusion tool on the sheet metal

L1, L2, L3 :

The orientation of the sheet postures

Z1, Z2 :

The deformation distance of the sheet metal on the Z-axis direction

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Authors and Affiliations

  1. College of Mechanical and Electrical Engineering, Shenyang Aerospace University, Shenyang, Liaoning, 110136, China

    Hu Zhu & Yang Wang

  2. School of Mechanical and Automation Engineering, Kyungnam University, Changwon, 51767, Korea

    Jaeguan Kang

Authors
  1. Hu Zhu
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  2. Yang Wang
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  3. Jaeguan Kang
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Corresponding author

Correspondence to Hu Zhu.

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The authors declare that they have no conflict of interest.

Additional information

Recommended by Editor Hyung Wook Park

Hu Zhu is a Professor in the College of Mechanical and Electrical Engineering at Shenyang Aerospace University. He received his B.S. from Jilin University, and M.S. and Ph.D. in the Department of Mechanical Design and Production Engineering at Seoul National University. His current research interests include CAD/CAM, 3D printing, CNC incremental forming.

Yang Wang is currently a M.S. Student in the College of Mechanical and Electrical Engineering at Shenyang Aerospace University. He received his B.S. from the Mechanical Manufacturing and Automation at Shenyang Aerospace University. His research interests include CAD/CAM, CNC incremental forming.

Jaeguan Kang is currently a Professor in the Division of Mechanical Engineering at the Kyungnam University. He received his Ph.D. from Pohang University of Science and Technology, M.S. from Korea Advanced Institute of Science and Technology, B.S. from Seoul National University. His primary research interests include CAD/CAM, Incremental sheet metal forming.

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Zhu, H., Wang, Y. & Kang, J. The effect of extrusion direction on the forming quality in CNC incremental forming with multidirectional adjustment of sheet posture. J Mech Sci Technol 35, 1671–1679 (2021). https://doi.org/10.1007/s12206-021-0330-9

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  • DOI: https://doi.org/10.1007/s12206-021-0330-9

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