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Chen Liping
School of Mechanical and
Power Engineering,
Shanghai Jiaotong University,
Shanghai 200030, China
Chen Yan
School of Energy and Power Engineering,
Xi’an Jiaotong University,
Xi’an 710049, China
Hu Dejin
School of Mechanical and
Power Engineering,
Shanghai Jiaotong University,
Shanghai 200030, China |
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INTERFERENCE-FREE TOOL
POSTURE GENERATION FOR 5-AXIS NC MILLING FREE-FORM SURFACES
WITH CYLINDRICAL MILL
Abstract: The 5-axis NC machining offers the potential of efficient and accurate machining. However, the present CAM system for 5-axis control is still an unsolved problem due to interference between tool and surrounding objects. A new method is presented. There are two steps in this procedure. First, it detects the interference by calculating the shortest distance between the tool-axis and the surrounding surfaces. Then upon the maximum gouging, the interference-free tool posture for 5-axis NC cylindrical milling free-form surfaces is obtained by adjusting tool. The validity of the proposed method has been confirmed by machining an impel-ler.
Key words:
NC machining Interference avoidance Computer aided manufacturing |