We present a hand specialized for climbing unstructured rocky surfaces. Articulated fingers achieve grasps commonly used by human climbers. The gripping surfaces are equipped with dense arrays of spines that engage with asperities on hard rough materials. A load-sharing transmission system divides the shear contact force among spine tiles on each phalanx to prevent premature spine slippage or grasp failure. Taking advantage of the hand’s kinematic and load-sharing properties, the wrench space of achievable forces and moments can be computed rapidly. Bench-top tests show agreement with the model, with average wrench space errors of 10–15%, despite the stochastic nature of spine/surface interaction. The model provides design guidelines and control strategy insights for the SpinyHand and can inform future work.
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June 2019
Research-Article
SpinyHand: Contact Load Sharing for a Human-Scale Climbing Robot
Shiquan Wang,
Shiquan Wang
1
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: shiquan.wang@flexiv.com
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: shiquan.wang@flexiv.com
1Corresponding author.
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Hao Jiang,
Hao Jiang
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: hao.jiang@flexiv.com
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: hao.jiang@flexiv.com
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Tae Myung Huh,
Tae Myung Huh
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: taemyung@stanford.edu
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: taemyung@stanford.edu
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Danning Sun,
Danning Sun
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: dannings@stanford.edu
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: dannings@stanford.edu
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Wilson Ruotolo,
Wilson Ruotolo
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: wruotolo@stanford.edu
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: wruotolo@stanford.edu
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Matthew Miller,
Matthew Miller
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: millerm2@stanford.edu
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: millerm2@stanford.edu
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William R. T. Roderick,
William R. T. Roderick
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: wrtr@stanford.edu
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: wrtr@stanford.edu
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Hannah S. Stuart,
Hannah S. Stuart
Assistant Professor
Department of Mechanical Engineering,
2521 Hearst Avenue, Berkeley, CA 94709
e-mail: hstuart@berkeley.edu
Department of Mechanical Engineering,
University of California
,2521 Hearst Avenue, Berkeley, CA 94709
e-mail: hstuart@berkeley.edu
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Mark R. Cutkosky
Mark R. Cutkosky
Professor
Department of Mechanical Engineering,
416 Escondido Mall, Building 550, Stanford, CA 94305
e-mail: cutkosky@stanford.edu
Department of Mechanical Engineering,
Stanford University
,416 Escondido Mall, Building 550, Stanford, CA 94305
e-mail: cutkosky@stanford.edu
Search for other works by this author on:
Shiquan Wang
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: shiquan.wang@flexiv.com
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: shiquan.wang@flexiv.com
Hao Jiang
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: hao.jiang@flexiv.com
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: hao.jiang@flexiv.com
Tae Myung Huh
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: taemyung@stanford.edu
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: taemyung@stanford.edu
Danning Sun
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: dannings@stanford.edu
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: dannings@stanford.edu
Wilson Ruotolo
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: wruotolo@stanford.edu
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: wruotolo@stanford.edu
Matthew Miller
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: millerm2@stanford.edu
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: millerm2@stanford.edu
William R. T. Roderick
Department of Mechanical Engineering,
424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: wrtr@stanford.edu
Stanford University
,424 Panama Mall, Building 560, Stanford, CA 94305
e-mail: wrtr@stanford.edu
Hannah S. Stuart
Assistant Professor
Department of Mechanical Engineering,
2521 Hearst Avenue, Berkeley, CA 94709
e-mail: hstuart@berkeley.edu
Department of Mechanical Engineering,
University of California
,2521 Hearst Avenue, Berkeley, CA 94709
e-mail: hstuart@berkeley.edu
Mark R. Cutkosky
Professor
Department of Mechanical Engineering,
416 Escondido Mall, Building 550, Stanford, CA 94305
e-mail: cutkosky@stanford.edu
Department of Mechanical Engineering,
Stanford University
,416 Escondido Mall, Building 550, Stanford, CA 94305
e-mail: cutkosky@stanford.edu
1Corresponding author.
2
Present address: Flexiv Robotics, Ltd., 4500 Great America Pkwy, Santa Clara, CA 95054.
Contributed by the Mechanisms and Robotics Committee of ASME for publication in the Journal of Mechanisms and Robotics. Manuscript received December 31, 2018; final manuscript received February 4, 2019; published online April 9, 2019. Assoc. Editor: Veronica J. Santos.
J. Mechanisms Robotics. Jun 2019, 11(3): 031009 (13 pages)
Published Online: April 9, 2019
Article history
Received:
December 31, 2018
Revision Received:
February 4, 2019
Accepted:
February 15, 2019
Citation
Wang, S., Jiang, H., Myung Huh, T., Sun, D., Ruotolo, W., Miller, M., Roderick, W. R. T., Stuart, H. S., and Cutkosky, M. R. (April 9, 2019). "SpinyHand: Contact Load Sharing for a Human-Scale Climbing Robot." ASME. J. Mechanisms Robotics. June 2019; 11(3): 031009. https://doi.org/10.1115/1.4043023
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