Because of the increasing demand in industry for A/B-axis tool heads, particularly in thin wall machining applications for structural aluminium aerospace components, the three-degree-of-freedom articulated tool head with parallel kinematics has become very popular. This paper addresses the dimensional optimization of two types of tool head with and parallel kinematics (P, R, and S standing for prismatic, revolute, and spherical joint, respectively; the subscripts V and H indicating that the direction of the P joint is vertical or horizontal, and the joint symbol with underline means the joint is active) by considering their orientation capability and positioning accuracy. We first investigate the tilt angle of the spherical joint, the orientation capability, and the error of one point from the mobile platform caused by input errors. Optimization of the tool head is easy. For the tool head, a design space is developed to illustrate how the orientation capability and error index are related to the link lengths. An optimization process is accordingly presented. Using the optimization method introduced here, it is not difficult to find all the possible optimal solutions.
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e-mail: XinJunLiu@mail.tsinghua.edu.cn
e-mail: Ilian.Bonev@etsmtl.ca
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February 2008
Research Papers
Orientation Capability, Error Analysis, and Dimensional Optimization of Two Articulated Tool Heads With Parallel Kinematics
Xin-Jun Liu,
Xin-Jun Liu
Institute of Manufacturing Engineering, Department of Precision Instruments,
e-mail: XinJunLiu@mail.tsinghua.edu.cn
Tsinghua University
, Beijing, 100084, People’s Republic of China
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Ilian A. Bonev
Ilian A. Bonev
Department of Automated Manufacturing Engineering,
e-mail: Ilian.Bonev@etsmtl.ca
École de Technologie Supérieure
, 1100 Notre-Dame St. W., Montreal, Quebec, H3C 1K3, Canada
Search for other works by this author on:
Xin-Jun Liu
Institute of Manufacturing Engineering, Department of Precision Instruments,
Tsinghua University
, Beijing, 100084, People’s Republic of Chinae-mail: XinJunLiu@mail.tsinghua.edu.cn
Ilian A. Bonev
Department of Automated Manufacturing Engineering,
École de Technologie Supérieure
, 1100 Notre-Dame St. W., Montreal, Quebec, H3C 1K3, Canadae-mail: Ilian.Bonev@etsmtl.ca
J. Manuf. Sci. Eng. Feb 2008, 130(1): 011015 (9 pages)
Published Online: February 15, 2008
Article history
Received:
November 9, 2006
Revised:
August 3, 2007
Published:
February 15, 2008
Citation
Liu, X., and Bonev, I. A. (February 15, 2008). "Orientation Capability, Error Analysis, and Dimensional Optimization of Two Articulated Tool Heads With Parallel Kinematics." ASME. J. Manuf. Sci. Eng. February 2008; 130(1): 011015. https://doi.org/10.1115/1.2783255
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