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�������պ����ѧѧ�� 2009, Vol. 35 Issue (2) :166-169    DOI:
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Basal worm-designing method of face-gear hob
Wang Yanzhong, Wu Canhui, Ge Xuyang, Zhang Li*
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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Abstract�� Face-gear drives become the main direction of research for aeronautical drives because of their special advantages. The applied coordinate systems of face-gear were set up and the equation of face-gear tooth surface was established, then the face-gear tooth surface constrain conditions for dedendum undercutting and addendum pointing were analyzed based on the face-gear transmission theory, at the same time, the disciplines were discussed on the relationships between pressure angle and the face-gear outer & inner radius in keeping with the practically calculated examples. The calculating results are useful for designing the face-gear drive. In the end, the face-gear hobbing theory was analyzed, according to the gear geometry and applied theory, the hobbing surface equation was founded. The discrete values of three-dimensional coordinates for the hobbing surface were calculated by using the method of numerical calculation. The three-dimensional basal worm model of face-gear hob was designed by recurring to the three-dimensional software.
Keywords�� face-gear   equation of tooth surface   dedendum undercutting   addendum pointing   hob   worm     
Received 2008-07-20;
Fund:

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About author: ������ (1963-),��,����������,����,yzwang63@126.com.
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������, ��ӻ�, ������, �� ��.����ֹ��������ϸ˵���Ʒ���[J]  �������պ����ѧѧ��, 2009,V35(2): 166-169
Wang Yanzhong, Wu Canhui, Ge Xuyang, Zhang Li.Basal worm-designing method of face-gear hob[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2009,V35(2): 166-169
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