A robust compliant grasper via shape deposition manufacturing

Joint compliance can enable successful robot grasping despite uncertainties in target object location. Compliance also enhances manipulator robustness by minimizing contact forces in the event of unintended contacts or impacts. In this paper, we describe the design, fabrication, and evaluation of a novel compliant robotic grasper constructed using polymer-based shape deposition manufacturing. Joints are formed by elastomeric flexures, and actuator and sensor components are embedded in tough rigid polymers. The result is a robot gripper with the functionality of conventional metal prototypes for grasping in unstructured environments but with robustness properties that allow for large forces due to inadvertent contact.

[1]  J. Salisbury,et al.  Active stiffness control of a manipulator in cartesian coordinates , 1980, 1980 19th IEEE Conference on Decision and Control including the Symposium on Adaptive Processes.

[2]  Daniel E. Whitney,et al.  Quasi-Static Assembly of Compliantly Supported Rigid Parts , 1982 .

[3]  R. Merz,et al.  Shape Deposition Manufacturing , 1994 .

[4]  Robert D. Howe,et al.  Towards grasping in unstructured environments: grasper compliance and configuration optimization , 2005, Adv. Robotics.

[5]  Imin Kao,et al.  Computing and controlling compliance of a robotic hand , 1989, IEEE Trans. Robotics Autom..

[6]  Cesare Stefanini,et al.  A high force miniature gripper fabricated via shape deposition manufacturing , 2003, 2003 IEEE International Conference on Robotics and Automation (Cat. No.03CH37422).

[7]  Robert D. Howe,et al.  Towards the development of a humanoid arm by minimizing interaction forces through minimum impedance control , 2001, Proceedings 2001 ICRA. IEEE International Conference on Robotics and Automation (Cat. No.01CH37164).

[8]  Shuguang Huang,et al.  A Passive Mechanism that Improves Robotic Positioning through Compliance and Constraint , 1996 .

[9]  S. Cowin,et al.  Biomechanics: Mechanical Properties of Living Tissues, 2nd ed. , 1994 .

[10]  J. Slotine,et al.  AUTONOMOUS ROCK ACQUISITION , 1996 .

[11]  Mark R. Cutkosky,et al.  Design by Composition for Layered Manufacturing , 2000 .

[12]  Claudio Melchiorri,et al.  Mechatronic design of innovative fingers for anthropomorphic robot hands , 2003, 2003 IEEE International Conference on Robotics and Automation (Cat. No.03CH37422).

[13]  Fritz B. Prinz,et al.  Scalable rotary actuators with embedded shape memory alloys , 2001, SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring.

[14]  Jonathan E. Clark,et al.  Biomimetic design and fabrication of a hexapedal running robot , 2001, Proceedings 2001 ICRA. IEEE International Conference on Robotics and Automation (Cat. No.01CH37164).

[15]  Andrew A. Goldenberg,et al.  Soft materials for robotic fingers , 1992, Proceedings 1992 IEEE International Conference on Robotics and Automation.

[16]  Mark R. Cutkosky,et al.  Skin materials for robotic fingers , 1987, Proceedings. 1987 IEEE International Conference on Robotics and Automation.

[17]  Josip Loncaric,et al.  Geometrical analysis of compliant mechanisms in robotics , 1985 .

[18]  Yoji Umetani,et al.  The Development of Soft Gripper for the Versatile Robot Hand , 1978 .

[19]  Saifallah Benjaafar,et al.  A miniature robotic system for reconnaissance and surveillance , 2000, Proceedings 2000 ICRA. Millennium Conference. IEEE International Conference on Robotics and Automation. Symposia Proceedings (Cat. No.00CH37065).