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Affiliation of Author(s):机电工程学院
Journal:MICROMACHINES
Funded by:省、市、自治区科技项目
Key Words:Keywords: 2-DOF FTS system; compliant mechanism; piezoelectric actuator; matrix based compliance;
Abstract:Abstract: Fast tool servo (FTS) machining technology is a promising method for freeform surfaces and machining micro-nanostructure surfaces. However, limited degrees of freedom (DOF) is an inherent drawback of existing FTS technologies. In this paper, a piezo-actuated serial structure FTS system is developed to obtain translational motions along with z and x-axis directions for ultra-precision machining. In addition, the principle of the developed 2-DOF FTS is introduced and explained. A high-rigidity four-bar (HRFB) mechanism is proposed to produce motion along the z-axis direction. Additionally, through a micro-rotation motion around flexible bearing hinges (FBHs), bi-directional motions along the x-axis direction can be produced. The kinematics of the mechanism are described using a matrix-based compliance modeling (MCM) method, and then the static analysis and dynamic analysis are performed using finite element analysis (FEA). Testing experiments were conducted to investigate the actual performance of the developed system. The results show that low coupling, proper travel, and high natural frequency are obtained. Finally, a sinusoidal wavy surface is uniformly generated by the mechanism developed to demonstrate the e ectiveness of the FTS system.
Co-author:guyan,林洁琼
First Author:liuyamei
Indexed by:Journal paper
Volume:10
Issue:5
Page Number:1
Number of Words:1
ISSN No.:2072-666X
Translation or Not:no
Date of Publication:2019-05-15