赵杨,陈燕,吕旖旎,李文龙,陈松.球形开槽磁极辅助研磨H63黄铜弯管内表面[J].表面技术,2020,49(5):360-367.
ZHAO Yang,CHEN Yan,LYU Yi-ni,LI Wen-long,CHEN Song.Spherical Magnet with Ring Grooves Assisted Grinding Inner Surface of H63 Brass Bend Pipe[J].Surface Technology,2020,49(5):360-367 |
| 球形开槽磁极辅助研磨H63黄铜弯管内表面 |
| Spherical Magnet with Ring Grooves Assisted Grinding Inner Surface of H63 Brass Bend Pipe |
| 投稿时间：2019-04-22 修订日期：2020-05-20 |
| DOI：10.16490/j.cnki.issn.1001-3660.2020.05.043 |
| 中文关键词: H63黄铜弯管 辅助磁极 磁粒研磨 研磨运动轨迹 研磨效率 表面形貌 |
| 英文关键词:H63 brass bend pipe auxiliary magnet magnetic particle grinding grinding track grinding efficiency surface topography |
| 基金项目:国家自然科学基金（51775258）；辽宁省自然科学基金重点项目（20170540458）；精密与特种加工教育部重点实验室基金（B201703）；辽宁科技大学研究生教育改革与科技创新项目（LKDYC201806） |
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| Author | Institution |
| ZHAO Yang | University of Science and Technology Liaoning, Anshan 114051, China |
| CHEN Yan | University of Science and Technology Liaoning, Anshan 114051, China |
| LYU Yi-ni | University of Science and Technology Liaoning, Anshan 114051, China |
| LI Wen-long | University of Science and Technology Liaoning, Anshan 114051, China |
| CHEN Song | University of Science and Technology Liaoning, Anshan 114051, China |
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| 中文摘要: |
| 目的 改善H63黄铜弯管内表面质量，缩短加工周期，提高使用寿命。方法 通过六自由度机械手臂，拖动磁场发生装置，带动弯管内辅助磁极进行研磨试验。分别采用球形磁极与球形开槽磁极作为辅助磁极研磨，并利用Ansoft软件，分析加入两种辅助磁极后，磨削区磁力线和磁感应强度的变化情况。探究两种光整加工形式的原理及研磨轨迹。使用触针式表面粗糙度测量仪和超景深3D电子显微镜，对两种辅助磁极研磨试验前后的样品进行对比和分析。结果 添加球形辅助磁极研磨60 min，H63黄铜弯管内表面粗糙度Ra由原始的0.833 μm减小到0.238 μm，继续研磨15 min后，Ra降低到0.194 μm。添加球形开槽辅助磁极研磨60 min，H63黄铜弯管内表面粗糙度Ra由原始的0.834 μm减小到0.172 μm，继续研磨15 min后，Ra变为0.176 μm。球形开槽辅助磁极研磨加工弯管内表面，效率提高20%。结论 球形开槽辅助磁极磨削弯管内表面的轨迹为致密均匀的双螺旋线，能够避免球形辅助磁极研磨时产生的尖点效应。同时，该加工形式促进磁性研磨粒子滑擦弯管内壁时的动态翻滚更新，进而减缓切削刃钝化，缩短研磨时间，解决弯管内壁的原始缺陷问题。 |
| 英文摘要: |
| The work aims to improve the inner surface quality of H63 brass bend pipe, shorten its processing period and improve its service life. A six-degree-of-freedom manipulator was used to drive the magnetic field generator to drive the auxiliary magnet in bending pipe to conduct grinding test. The spherical magnet and spherical with ring grooves magnet were used as auxiliary magnet for grinding, and the Ansoft software was used to analyze the changes of magnetic lines and magnetic induction intensity in the processing area after two different kinds of auxiliary magnets were added. The principle and grinding track of two different kinds of auxiliary magnets for grinding the inner surface of bending pipe were explored. Two different kinds of auxiliary magnets of grinding test data were compared and analyzed with the stylus surface roughness meter and the ultra depth 3D microscope. When the spherical magnet were used as auxiliary magnet, the grinding time was 60 minutes, the inner surface roughness of H63 brass bend pipe was reduced from Ra=0.833 μm to Ra=0.238 μm; after continuing grinding for 15 minutes, the surface roughness was reduced from Ra=0.238 μm to Ra=0.194 μm. When the spherical with ring grooves magnet were used as auxiliary magnet, the grinding time was 60 minutes, the inner surface roughness of H63 brass bend pipe was reduced from Ra=0.834 μm to Ra=0.172 μm; after continuing grinding for 15 minutes, the surface roughness was changed from Ra=0.172 μm to Ra=0.176 μm. When the spherical with ring grooves magnet was used as auxiliary magnet, the grinding efficiency was increased by 20%. When the spherical with ring grooves magnet was used as auxiliary magnet, the grinding track of the inner surface of bending pipe is dense homogeneous double helix curve; it can avoid the sharp point effect caused by the grinding of spherical auxiliary magnet. At the same time, it promotes the rolling and updating of magnetic abrasive particles, and then delays blade passivation and shorten the grinding time; it solves the problem of original inner surface quality defect of bend pipe. |
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