Orbital milling hole of aerospace Al-alloy with big pitch |
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| Authors: | SHAN Yicai HE Ning LI Liang ZHAO Wei QIN Xiaojie |
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| Institution: | SHAN Yicai1,2,HE Ning1,LI Liang1,ZHAO Wei1,QIN Xiaojie 1 (1. College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China,2. Nanjing College of Information Technology,Nanjing 210046,China) |
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| Abstract: | To improve the processing efficiency and the quality of orbital milling hole of aerospace Al-alloy, the bigpitch influence
on cutting force and hole quality was studied experimentally. First, a program based on horizontal lathe was proposed based
on kinematics analysis of orbital milling. Then, the cutting force at different stages and the hole quality with different
pitches were measured. Results show that the axial force and radial force increase with the pitch amplification during orbital
milling. However, the axial force in the orbital milling hole is about 8–10 times smaller than that in the conventional drilling.
The diameter error of milling hole is 48–93 μm, and the surface roughness of milling hole is 1.2–1.7 μm. Finally, an orbital
milling device with big pitch was designed. |
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| Keywords: | aerospace Al-alloy orbital milling hole cutting force quality orbital milling device |
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