| YAN Tao,LI Xiu-hong,LI Wen-hui,YANG Sheng-qiang,WANG Dong-liang.Experimental Study on PVA Based Viscoelastic, Magnetic and Abrasive Finishing and Optimization of Machining Parameters[J],48(2):275-280 |
| Experimental Study on PVA Based Viscoelastic, Magnetic and Abrasive Finishing and Optimization of Machining Parameters |
| Received:September 12, 2018 Revised:February 20, 2019 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2019.02.039 |
| KeyWord:magnetic abrasive media surface integrity roughness prediction model viscoelasticity polyvinyl alcohol |
| Author | Institution |
| YAN Tao |
1.School of Mechanical Engineering, Taiyuan University of Technology, Taiyuan , China; 2.Shanxi Key Laboratory of Precision Machining, Taiyuan , China |
| LI Xiu-hong |
1.School of Mechanical Engineering, Taiyuan University of Technology, Taiyuan , China; 2.Shanxi Key Laboratory of Precision Machining, Taiyuan , China |
| LI Wen-hui |
1.School of Mechanical Engineering, Taiyuan University of Technology, Taiyuan , China; 2.Shanxi Key Laboratory of Precision Machining, Taiyuan , China |
| YANG Sheng-qiang |
1.School of Mechanical Engineering, Taiyuan University of Technology, Taiyuan , China; 2.Shanxi Key Laboratory of Precision Machining, Taiyuan , China |
| WANG Dong-liang |
3.China Rail Way Taiyuan Group Co., Ltd, Taiyuan , China |
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| Abstract: |
| The work aims to test the surface finishing performance of the newly developed PVA-based viscoelastic, magnetic and abrasive tool, master the influence laws of the ratio parameters and processing conditions on the processing effect, and optimize the processing parameters to achieve the best processing effect. The main factors affecting the machining effect and the parameters range were determined by the pilot experiment with the outer surface of 6061 aluminum alloy tube as the experimental object. Then, based on the response surface methodology (RSM), the relationship among the spindle speed, the mass ratio of two phases, the size of abrasive grains and the processing time and the reduction rate in surface roughness (%?Ra) was explored and analyzed. Finally, the %?Ra prediction model of PVA-based viscoelastic, magnetic and abrasive tool for aluminum alloy tube surface was established by variance analysis of experimental results, and the influence parameters were optimized. Under the optimum experimental conditions (processing time of 46 min, two-phase mass ratio of 1.45, spindle speed of 635 r/min and abrasive size of 65 mesh), the reduction rate of surface roughness of the workpiece reached 92.5%, and the best surface finish reached 59 nm, thus significantly improving the machining effects. As a new finishing medium, PVA-based viscoelastic, magnetic and abrasive tools have good adaptability and fluidity, and can achieve good finishing effect. The significant single factor affecting %?Ra from strong to weak is the processing time, spindle speed, abrasive particle size and two-phase mass ratio. The significant interactive factors are two-phase mass ratio+spindle speed, processing time + spindle speed and two-phase mass ratio+abrasive particle size. When the spindle speed and machining time are high, the mass ratio of two phases is middle and the abrasive grain size is low or high, a better surface finishing effect can be obtained. |
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