The control of multi-bending: A flexible method to fabricate complex structural parts

Jack X. Luo; Kim A. Stelson

doi:10.1115/CIE1994-0479

The control of multi-bending: A flexible method to fabricate complex structural parts

Jack X. Luo, Kim A. Stelson

Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

The CNC multi-axis bending process can achieve high productivity and flexibility over conventional forming processes for fabricating long slender structural components of arbitrary shape. However, generating a CNC program to produce an accurate part shape is currently a laborious procedure involving trial-and-error by the machine operator. A systematic method has been developed to replace the manual control method and increase the dimensional accuracy. The concept of an intrinsic representation from differential geometry is applied as a basis to represent the part shape and develop the process model. The feedback control is derived from two transfer functions that represent the bending and twisting processes. By applying shape errors to the inverse transfer functions, incremental control commands can be determined and used to improve the control performance. Experimental results have demonstrated that shape errors decrease on subsequent iterations.

Original language	English (US)
Title of host publication	ASME 1994 International Computers in Engineering Conference and Exhibition
Publisher	American Society of Mechanical Engineers (ASME)
Pages	829-838
Number of pages	10
ISBN (Electronic)	9780791813805
DOIs	https://doi.org/10.1115/CIE1994-0479
State	Published - 1994
Event	ASME 1994 International Computers in Engineering Conference and Exhibition, CIE 1994 and the ASME 1994 8th Annual Database Symposium collocated with the ASME 1994 Design Technical Conferences - Minneapolis, United States Duration: Sep 11 1994 → Sep 14 1994

Publication series

Name	Proceedings of the ASME Design Engineering Technical Conference
Volume	Part F168015-2

Conference

Conference	ASME 1994 International Computers in Engineering Conference and Exhibition, CIE 1994 and the ASME 1994 8th Annual Database Symposium collocated with the ASME 1994 Design Technical Conferences
Country/Territory	United States
City	Minneapolis
Period	9/11/94 → 9/14/94

Bibliographical note

Publisher Copyright:
© 1994 American Society of Mechanical Engineers (ASME). All rights reserved.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1115/CIE1994-0479

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Luo, J. X., & Stelson, K. A. (1994). The control of multi-bending: A flexible method to fabricate complex structural parts. In ASME 1994 International Computers in Engineering Conference and Exhibition (pp. 829-838). Article 0479 (Proceedings of the ASME Design Engineering Technical Conference; Vol. Part F168015-2). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/CIE1994-0479

The control of multi-bending: A flexible method to fabricate complex structural parts. / Luo, Jack X.; Stelson, Kim A.
ASME 1994 International Computers in Engineering Conference and Exhibition. American Society of Mechanical Engineers (ASME), 1994. p. 829-838 0479 (Proceedings of the ASME Design Engineering Technical Conference; Vol. Part F168015-2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Luo, JX & Stelson, KA 1994, The control of multi-bending: A flexible method to fabricate complex structural parts. in ASME 1994 International Computers in Engineering Conference and Exhibition., 0479, Proceedings of the ASME Design Engineering Technical Conference, vol. Part F168015-2, American Society of Mechanical Engineers (ASME), pp. 829-838, ASME 1994 International Computers in Engineering Conference and Exhibition, CIE 1994 and the ASME 1994 8th Annual Database Symposium collocated with the ASME 1994 Design Technical Conferences, Minneapolis, United States, 9/11/94. https://doi.org/10.1115/CIE1994-0479

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abstract = "The CNC multi-axis bending process can achieve high productivity and flexibility over conventional forming processes for fabricating long slender structural components of arbitrary shape. However, generating a CNC program to produce an accurate part shape is currently a laborious procedure involving trial-and-error by the machine operator. A systematic method has been developed to replace the manual control method and increase the dimensional accuracy. The concept of an intrinsic representation from differential geometry is applied as a basis to represent the part shape and develop the process model. The feedback control is derived from two transfer functions that represent the bending and twisting processes. By applying shape errors to the inverse transfer functions, incremental control commands can be determined and used to improve the control performance. Experimental results have demonstrated that shape errors decrease on subsequent iterations.",

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The control of multi-bending: A flexible method to fabricate complex structural parts

Abstract

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Bibliographical note

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