| LIU Xiao-chu,LIU Zhen,LIANG Zhong-wei,HUANG Jian-feng,GAO Wei-lin,XIAO Jin-rui.Numerical Simulation of Surface Roughness of GCr15 Steel Strengthened Grinding Based on Random Impact[J],50(4):385-392 |
| Numerical Simulation of Surface Roughness of GCr15 Steel Strengthened Grinding Based on Random Impact |
| Received:March 14, 2020 Revised:May 26, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.16490/j.cnki.issn.1001-3660.2021.04.041 |
| KeyWord:strengthened grinding surface roughness random impact numerical simulation GCr15 steel |
| Author | Institution |
| LIU Xiao-chu |
School of Mechanical & Electric Engineering,Guangzhou , China ;Guangzhou Key Laboratory for Strengthened Grinding and High Performance Machining of Metal Material,Guangzhou , China ;Guangdong Engineering and Technology Research Centre for Strengthen Grinding and High Performance Micro-Nanomachining, Guangzhou University, Guangzhou , China |
| LIU Zhen |
School of Mechanical & Electric Engineering,Guangzhou , China ;Guangzhou Key Laboratory for Strengthened Grinding and High Performance Machining of Metal Material,Guangzhou , China ;Guangdong Engineering and Technology Research Centre for Strengthen Grinding and High Performance Micro-Nanomachining, Guangzhou University, Guangzhou , China |
| LIANG Zhong-wei |
School of Mechanical & Electric Engineering,Guangzhou , China ;Guangzhou Key Laboratory for Strengthened Grinding and High Performance Machining of Metal Material,Guangzhou , China ;Guangdong Engineering and Technology Research Centre for Strengthen Grinding and High Performance Micro-Nanomachining, Guangzhou University, Guangzhou , China |
| HUANG Jian-feng |
School of Mechanical & Electric Engineering,Guangzhou , China ;Guangzhou Key Laboratory for Strengthened Grinding and High Performance Machining of Metal Material,Guangzhou , China ;Guangdong Engineering and Technology Research Centre for Strengthen Grinding and High Performance Micro-Nanomachining, Guangzhou University, Guangzhou , China |
| GAO Wei-lin |
School of Mechanical & Electric Engineering,Guangzhou , China ;Guangzhou Key Laboratory for Strengthened Grinding and High Performance Machining of Metal Material,Guangzhou , China ;Guangdong Engineering and Technology Research Centre for Strengthen Grinding and High Performance Micro-Nanomachining, Guangzhou University, Guangzhou , China |
| XIAO Jin-rui |
School of Mechanical & Electric Engineering,Guangzhou , China ;Guangzhou Key Laboratory for Strengthened Grinding and High Performance Machining of Metal Material,Guangzhou , China ;Guangdong Engineering and Technology Research Centre for Strengthen Grinding and High Performance Micro-Nanomachining, Guangzhou University, Guangzhou , China |
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| Abstract: |
| The paper aims to explore the law of the influence of strengthening grinding process parameters on the surface roughness. The effect of abrasive on the workpiece was simulated by the model of small balls uniformly distributed on the surface of large balls, Based on Abaqus/Python, a finite element model of random impact of intensified grinding was established, the process parameters such as different jet speed, jet angle, steel ball diameter and jet time were set for simulation. The surface morphology of the target was extracted by MATLAB. The surface roughness was calculated according to the four different paths of the surface topography, and the variation rule of the roughness under different parameters was analyzed. The results were as follows:With the increase of jet time, the surface roughness of the strengthened grinding surface increases first and then tends to be stable. When the jet angle is 90°, the diameter of the steel ball is 0.8 mm, and the jet speed is 30, 50, 70 m/s, the surface roughness increases with the jet time and stabilizes to 1~1.2, 1.7~1.9, 2~2.5 μm. When the jet speed is 50m/s, the diameter of the steel ball is 0.8 mm, and the jet angle is 30°, 60°, 90°, the surface roughness increases with the jet time and stabilizes to 1.1~1.3, 1.5~1.7, 1.7~1.9 μm. When the jet speed is 50 m/s, the jet angle is 90°, the diameter of the steel ball is 0.4, 0.8, 1.2 mm, the surface roughness increases with the jet time and stabilizes to 0.7~ 0.8, 1.7 ~ 1.9, 2.4 ~ 2.6 μm. It was found that the error between test results and simulation results is 8.15%. Therefore, the finite element model of random impact of strengthening grinding can reliably predict the surface roughness of strengthening grinding process and provide theoretical basis for subsequent research. |
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