| YANG Huan,CHEN Song,MA Rui,CHEN Yan,BAI Jie,WANG Ya-jun,ZHENG Jun-chao.Removal of Burrs on the Edges of Micropores in Complex Contour Skins by Magnetic Finishing[J],50(9):342-351 |
| Removal of Burrs on the Edges of Micropores in Complex Contour Skins by Magnetic Finishing |
| Received:November 16, 2020 Revised:April 07, 2021 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2021.09.036 |
| KeyWord:skin panel microporous burr magnetic abrasive finishing magnetic pole arrangement surface finishing |
| Author | Institution |
| YANG Huan |
School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan , China |
| CHEN Song |
School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan , China |
| MA Rui |
Beijing Power Machinery Research Institute, Beijing , China |
| CHEN Yan |
School of Mechanical Engineering and Automation, University of Science and Technology Liaoning, Anshan , China |
| BAI Jie |
Beijing Power Machinery Research Institute, Beijing , China |
| WANG Ya-jun |
Beijing Power Machinery Research Institute, Beijing , China |
| ZHENG Jun-chao |
Beijing Power Machinery Research Institute, Beijing , China |
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| Abstract: |
| In order to remove the burrs and tumors on the edges of the micropores of the skin siding with complex contours, in this paper, the magnetic needle magnetic finishing method was used to remove the burrs and tumors on the edges of the micropores of the skin siding. Designed three magnetic pole discs with different magnetic pole arrangement schemes, simulated the magnetic field distribution of the three different magnetic pole arrangement schemes by using simulation software, and used the optimized magnetic pole discs to grind and process the skin panel, using 3D The ultra-depth-of-field electron microscope to compare and observe the micro-hole morphology before and after processing. Based on the simulation results, the best solution was selected. The magnetic field distribution in the processing area was more uniform, and the blind area of the processing area was eliminated. The peak magnetic induction intensity there was increased from 300 mT to 500 mT, and the magnetic induction intensity gradient on the circumference was increased. This facilitates the rolling of the magnetic needle in the processing area. Based on the plan, the skin panel was ground and the best test parameters were determined. Under the conditions of selecting a 1 kg ϕ1.2 mm×8 mm magnetic needle, a magnetic pole plate rotating speed of 1000 r/min, and a feed speed of 8 mm/s, the 8 skin siding is processed for 50 minutes (changing the direction of the magnetic pole wheel every 5 minutes), and the morphology of the skin micropores was observed with a 3D ultra-depth-of-field microscope. The burrs and tumors on the edges of the skin micropores after grinding were effectively removed, and the burr removal rate can reach more than 95%, the morphology of the microporous edge was complete and smooth, and the surface roughness of the skin was improved, which was reduced from 2.6886 μm before processing to 1.7002 μm. The conclusion is that the magnetic grinding method can be used to precisely grind the complex contour skin micro-holes, effectively remove the burr buildup on the edge of the hole, and increase the processing efficiency to 64 times that of the original manual processing. At the same time, the surface roughness is improved, and the processed workpiece meets the actual requirements. |
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