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�������պ����ѧѧ�� 2002, Vol. 28 Issue (3) :319-322    DOI:
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�ƿ׹��ն�7075���Ͻ�ױ��������Ե�Ӱ��
������1, ����һ1, �α���2, ����3*
1. �������պ����ѧ ��е���̼��Զ���ѧԺ;
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Effect of Drilling Processes on Surface Integrity of ��7075��Aluminum Alloy Holes
PEI Xu-ming1, CHEN Wu-yi1, REN Bing-yi2, HAN Yu3*
1. Beijing University of Aeronautics and Astronautics, School of Mechanical Engineering and Automation;
2. Chengdu Aircraft Design & Research Institute;
3. Chengdu Aircraft Industry Co.

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Abstract�� Effect of the five drilling processes on the surface quality of fastening holes of 7075-aluminum alloy plate used in aircraft structures was investigated with the respect of surface integrity. By measuring and comparing of surface roughness, residual stress and micro hardness, it was found that the surface integrity of holes obtained by multiple-step machining with slow feed and byone-step compound machining were superior to that obtained by the other three drilling processes. In addition, factors influencing surface conditions were analyzed, and it was proved that one-step compound machining was an advanced and fast drilling method with high quality.
Keywords�� surface roughness   residual stress   work hardening   drilling quality   surface integrity     
Received 2000-09-29;
About author: ������(1962-),Ů,����֣����,˶ʿ��,����֣���ṤҵѧԺ����ϵ,450002,֣��.
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������, ����һ, �α���, ����.�ƿ׹��ն�7075���Ͻ�ױ��������Ե�Ӱ��[J]  �������պ����ѧѧ��, 2002,V28(3): 319-322
PEI Xu-ming, CHEN Wu-yi, REN Bing-yi, HAN Yu.Effect of Drilling Processes on Surface Integrity of ��7075��Aluminum Alloy Holes[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2002,V28(3): 319-322
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