高奇,荆小飞,李文博,郭光岩.高体分SiCp/Al复合材料薄壁小孔钻削工艺机理与实验研究[J].表面技术,2022,51(1):202-211.
GAO Qi,JING Xiao-fei,LI Wen-bo,GUO Guang-yan.Mechanism and Experimental Study of Thin Wall Hole Drilling Technique of High Volume Fraction SiCp/Al Composites[J].Surface Technology,2022,51(1):202-211 |
| 高体分SiCp/Al复合材料薄壁小孔钻削工艺机理与实验研究 |
| Mechanism and Experimental Study of Thin Wall Hole Drilling Technique of High Volume Fraction SiCp/Al Composites |
| 投稿时间：2021-06-28 修订日期：2021-09-23 |
| DOI：10.16490/j.cnki.issn.1001-3660.2022.01.021 |
| 中文关键词: SiCp/Al复合材料 表面粗糙度 棱边缺陷 钻削仿真 单因素法 |
| 英文关键词:SiCp/Al composites surface roughness edge defect drilling simulation single factor method |
| 基金项目:国家自然科学基金(51905083);辽宁省博士启动基金(2019-BS-123);辽宁省兴辽人才计划XLRC(1907122) |
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| Author | Institution |
| GAO Qi | School of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou 121001, China |
| JING Xiao-fei | School of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou 121001, China |
| LI Wen-bo | School of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou 121001, China |
| GUO Guang-yan | School of Mechanical Engineering and Automation, Liaoning University of Technology, Jinzhou 121001, China |
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| 中文摘要: |
| 目的 研究高体分SiCp/Al2024复合材料小孔钻削表面质量和出入口棱边缺陷形貌，为钻削加工提供一定理论基础。方法 用ABAQUS软件对薄壁板钻削加工的整个过程进行三维仿真模拟，采用直径为3 mm的PCD钻头对70%(体积分数)的SiCp/Al复合材料薄壁件进行钻削，采用单因素实验方案，通过改变主轴转速和进给速度检测复合材料已加工表面棱边的缺陷，并通过钻削实验验证有限元仿真的正确性。结果 薄壁小孔钻孔形成的过程中，表面会出现大量的凹坑、裂纹及划痕。当主轴转速N为3000、4000、5000 r/min，进给速度Vf为0.05、0.1075、0.1 m/min时，小孔内表面的粗糙度随主轴转速和进给速度的增大而明显降低。发现进给速度是影响钻削棱边缺陷质量的主要原因之一，随着进给速度的增大，断裂缺口的缺陷越明发显，毛刺的高度和厚度逐渐增加，缺陷越发严重;主轴转速对棱边缺陷质量的影响较小，主轴转速增大，颗粒与基体产生变形的现象较少，毛刺的高度和厚度也逐渐减小，材料脱离及断裂缺口现象得到明显改善。结论 当主轴转速为5000 r/min、进给速度为0.1 m/min时，加工表面较为光滑，材料的表面形貌较好，粗糙度为1.331 μm。棱边缺陷随进给速度的增大和主轴转速的减小变得严重。 |
| 英文摘要: |
| The work aims to study the surface quality of high volume fraction SiCp/Al 2024 composite hole drilling and the edge defect morphology of entrance and exit, and to provide a theoretical basis for drilling. ABAQUS software is used to simulate the whole process of drilling on thin wall plate. A PCD bit with a diameter of 3 mm is used to drill the SiCp/Al composite thin wall parts with a volume fraction of 70%. A single factor experiment scheme is used to detect the edge defects of the machined surface of the composite by changing the spindle speed and feed speed. The correctness of finite element simulation is verified by drilling experiment. There are a lot of pits, cracks and scratches on the surface during the drilling of thin-wall holes. When the spindle speed N is 3000 r/min, 4000 r/min and 5000 r/min; the feed speed Vf is 0.05 m/min, 0.1075 m/min and 0.1 m/min, the roughness of the inner surface of the small hole is obviously improved with the increase of the spindle speed and feed speed. The feed speed is one of the main reasons to affect the quality of drilling edge defects. With the increase of feeding speed, the defect of fracture notch becomes more obvious, and the height and thickness of burr gradually increase, and the defect becomes more serious. The influence of the spindle speed on the quality of the edge defect is small. The larger the spindle speed is, the deformation between the particle and the matrix is less, the height and thickness of the burr gradually decrease, and the material disconnection and fracture notch phenomenon are obviously improved. When the spindle speed is 5000 r/min and the feed speed is 0.1 m/min, the machined surface is smooth, the surface morphology is good, and the roughness is 1.331 μm. The edge defect becomes more serious with the increase of feed speed and the decrease of spindle speed. |
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