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�������պ����ѧѧ�� 2005, Vol. 31 Issue (07) :714-717    DOI:
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��־ΰ, �ھ���, ������, �ڹ⻪*
�������պ����ѧ ��е���̼��Զ���ѧԺ, ���� 100083
Conceptual design of compliant leveling mechanism
Yu Zhiwei, Yu Jingjun, Sun Minglei, Zong Guang*
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

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Abstract�� In the process of aligning two wafers, leveling them is a very important means to ensure a high aligning precision. A practical and compliant leveling mechanism to smooth away the faults existing in present leveling mechanisms was proposed in the course of microfabrication. This mechanism has the advantages of the high leveling precision, the short leveling time, the compact mechanical configuration, the simple movement control unit, etc. The leveling principle and its corresponding conceptual design were discussed. In the section of conceptual design, the mechanical configuration and the structure of the key parts (flexure hinge) used in the leveling mechanism were introduced, and restriction conditions were established as well for calculating main design parameters from the following three aspects: the original-dimension restriction, the deformative-dimension restriction and the stress restriction. The elasticity of the key part was calculated employing the energy method, and thesimulation of the elasticity using commercial finite element analysis software ANSYS8.0 was carried out, which verifies the former theoretical calculated result. Some key problems to be solved in the design were put forward.
Keywords�� leveling   mechanisms   conceptual design   flexure hinge   alignment     
Received 2004-10-30;
Fund:

����863����������Ŀ(2004AA404260); ������Ȼ��ѧ����������Ŀ(50475002)

About author: ��־ΰ(1975-),��,�Ĵ�������,��ʿ��, zhiwei yu005@163.com.
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��־ΰ, �ھ���, ������, �ڹ⻪.���Ե�ƽ�����������[J]  �������պ����ѧѧ��, 2005,V31(07): 714-717
Yu Zhiwei, Yu Jingjun, Sun Minglei, Zong Guang.Conceptual design of compliant leveling mechanism[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2005,V31(07): 714-717
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http://bhxb.buaa.edu.cn//CN/     ��     http://bhxb.buaa.edu.cn//CN/Y2005/V31/I07/714
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