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IJAT Vol.8 No.2 pp. 169-176
doi: 10.20965/ijat.2014.p0169
(2014)

Paper:

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Prototype Development of a Parallel-Link Robot Actuated by Pneumatic Linear Drives with Variable Inclination Mechanisms

Takahiro Kosaki*, Yoshihiro Morinaga*, and Manabu Sano**

*Faculty of Information Sciences, Hiroshima City University, 3-4-1 Ozuka-higashi, Asaminami-ku, Hiroshima 731-3194, Japan

**Faculty of Informatics, Osaka Gakuin University, 2-36-1 Kishibe-Minami, Suita-shi, Osaka 564-8511, Japan

Received:
September 13, 2013
Accepted:
January 27, 2014
Published:
March 5, 2014
Creative Commons License
Keywords:
fluid power system, pneumatic actuator, parallel-link robot, workspace, kinematics
Abstract
Parallel-link robots are generally high in power and precision because of their parallel arrangement of actuators. However, they have a workspace smaller than that of serial-link robots. In this paper, we develop a parallel-link robot prototype with pneumatic linear drives in which a mechanism for varying the actuator inclination is incorporated to enlarge the workspace. Our parallel-link robot realizes the rotational and translational motions of the end effector principally by means of the linear reciprocating motions of pneumatic linear drives mounted on the base. Auxiliary pneumatic actuators are used to adjust the inclination angles of those main pneumatic linear drives. The use of pneumatic actuators to realize the proposed parallel-link robot results in a lightweight, compact, and low-cost construction. The workspace and motion transmissibility of our parallel-link robot are analyzed through simulations based on kinematics; then, experimental investigations are carried out using the prototype.
Cite this article as:
T. Kosaki, Y. Morinaga, and M. Sano, “Prototype Development of a Parallel-Link Robot Actuated by Pneumatic Linear Drives with Variable Inclination Mechanisms,” Int. J. Automation Technol., Vol.8 No.2, pp. 169-176, 2014.
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