东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2020, Vol. 41 ›› Issue (9): 1304-1310.DOI: 10.12068/j.issn.1005-3026.2020.09.015

• 机械工程 • 上一篇    下一篇

TC4钛合金孔的磁粒研磨试验

焦安源1,2， 张国富2， 丁浩东2， 刘伟军3   

  1. (1. 东北大学 机械工程与自动化学院， 辽宁 沈阳110819； 2. 辽宁科技大学 应用技术学院， 辽宁 鞍山114051； 3. 沈阳工业大学 机械工程学院， 辽宁 沈阳110870)
  • 收稿日期:2020-02-24 修回日期:2020-02-24 出版日期:2020-09-15 发布日期:2020-09-15
  • 通讯作者: 焦安源
  • 作者简介:焦安源(1978-)，男，黑龙江齐齐哈尔人，东北大学博士研究生； 刘伟军(1969-)，男，辽宁朝阳人，沈阳工业大学教授，博士生导师.
  • 基金资助:
    科技重大专项(2016ZX04002005)； 辽宁省自然科学基金资助项目(2019-ZD-0029)； 辽宁科技大学骨干教师项目(601011507-32).

Experiment of Magnetic Abrasive Finishing on TC4 Titanium Alloy Hole

JIAO An-yuan1,2， ZHANG Guo-fu2， DING Hao-dong2， LIU Wei-jun3   

  1. 1. School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China; 2. School of Applied Technology， University of Science and Technology Liaoning， Anshan 114051， China; 3. School of Mechanical Engineering， Shenyang University of Technology， Shenyang 110870， China.
  • Received:2020-02-24 Revised:2020-02-24 Online:2020-09-15 Published:2020-09-15
  • Contact: LIU Wei-jun
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摘要： 采用内置磁极吸附磁性磨粒的方法，研究了工艺参数对高效去除TC4钛合金孔毛刺和切痕，降低表面粗糙度Ra，以及改善微观表面形貌的影响.首先，开展磁极与孔同轴研磨正交试验，通过极差和方差分析，获得磁极转速、磨料直径和磨料填充量对孔表面粗糙度Ra和微观形貌的影响程度，确定了较优的工艺参数组合；其次，开展磁极与孔偏心研磨试验，进行了三维力检测和数据分析.结果表明:对于10mm的TC4钛合金孔，使用6mm的径向磁极，偏心距1mm研磨30min后，孔的毛刺和切痕得以去除，表面形貌均匀平整，与同轴方案比较，表面粗糙度Ra下降13.7%，研磨效率提升25.0%.

关键词: 磁粒研磨, 表面粗糙度, 正交试验, 工艺参数, 微观形貌

Abstract: The effects of process parameters on the efficient removal of burrs and cuts of TC4 titanium alloy hole， reduction of surface roughness Ra， and improvement of micromorphology were studied by using the built-in magnet to attract magnetic abrasive particles. Firstly， the orthogonal experiment of coaxial grinding of the magnetic pole and hole was carried out. According to the analysis of the range and variance， the effect of the magnetic pole speed， the abrasive diameter and the filling amount of abrasive on the surface roughness Ra and micromorphology were obtained， and a better combination of process parameters was determined. Secondly， the eccentric grinding test of magnetic poles and holes was carried out， and three-dimensional force testing was performed on the eccentric grinding and the test data was analyzed. The results show that:for 10mm holes of TC4 titanium alloy， a radial magnetic pole of 6mm is used， the surface burrs and cuts are removed， and the surface topography is uniform and flat after 30minutes grinding with an eccentricity of 1mm. Compared with the coaxial grinding， the surface roughness Ra is reduced by 13.7% and the grinding efficiency is increased by 25.0%.

Key words: magnetic abrasive finishing(MAF), surface roughness, orthogonal experiment, process parameters, micromorphology

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