皮秒激光切向修整青铜结合剂金刚石砂轮的影响因素研究

doi:10.3901/JME.2024.09.229

机械工程学报 ›› 2024, Vol. 60 ›› Issue (9): 229-240.doi: 10.3901/JME.2024.09.229

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皮秒激光切向修整青铜结合剂金刚石砂轮的影响因素研究

郝明武^1,2, 姚鹏^1,2,3, 周嘉斌^1,2, 黎月明⁴, 梁士通⁴, 褚东凯^1,2, 黄传真⁵

1. 山东大学机械工程学院先进射流工程技术研究中心济南 250061;
2. 高效洁净机械制造教育部重点实验室济南 250061;
3. 山东大学深圳研究院深圳 518063;
4. 北京控制工程研究所北京 100190;
5. 燕山大学机械工程学院秦皇岛 066004

收稿日期:2023-07-10 修回日期:2024-01-19 出版日期:2024-05-05 发布日期:2024-06-18
作者简介:郝明武，男， 1999 年出生。主要研究方向为精密和超精密加工技术。E-mail： haomwu4467@163.com;姚鹏(通信作者)，男，博士研究生，教授，博士研究生导师。主要研究方向为磨削与超精密加工技术、多能场复合精密加工技术和智能制造与检测技术。E-mail： yaopeng@sdu.edu.cn
基金资助:
国家重点研发计划(2023YFC2413300)、深圳市科技计划(GJHZ20210705142537003，JCYJ20220818100408019)和山东省自然科学基金重大基础研究(ZR2023ZD34)资助项目。

The Influencing Factors of Tangential Dressing of Bronze-bond Diamond Grinding Wheel by Picosecond Pulsed Laser

HAO Mingwu^1,2, YAO Peng^1,2,3, ZHOU Jiabin^1,2, LI Yueming⁴, LIANG Shitong⁴, CHU Dongkai^1,2, HUANG Chuanzhen⁵

1. Center for Advanced Jet Engineering Technologies (CaJET), School of Mechanical Engineering, Shandong University, Jinan 250061;
2. Key Laboratory of High Efficiency and Clean Mechanical Manufacture of the Ministry of Education, Jinan 250061;
3. Shenzhen Research Institute of Shandong University, Shenzhen 518063;
4. Beijing Institute of Control Engineering, Beijing 100190;
5. School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004

Received:2023-07-10 Revised:2024-01-19 Online:2024-05-05 Published:2024-06-18

摘要/Abstract

摘要： 青铜结合剂金刚石砂轮因为其优异的磨削性能和较强的耐磨性被广泛应用于硬脆材料的磨削。为改善砂轮的磨削性能，本研究提出了青铜结合剂金刚石砂轮的皮秒激光修整研究，对粗粒度(100#)的青铜结合剂金刚石砂轮进行了激光切向整形。通过理论计算获得了脉宽为10 ps的激光烧蚀去除青铜结合剂及金刚石磨粒的功率密度阈值。研究了激光功率密度、激光扫描速度、砂轮转速和偏置距离对激光修整质量的影响，通过修整后砂轮表面粗糙度、磨粒突出高度和磨粒后角角度评价砂轮修整效果。结果表明当激光功率密度I_40W=2.60×10¹¹ W/cm²、激光扫描速度v=360 mm/min、砂轮转速n=9 000 r/min、激光偏置距离a=0.5 mm时，可以获得表面粗糙度较低、磨粒形态更好的金刚石砂轮表面。本研究采用的超快脉冲激光具有极高的峰值功率和极短的脉冲宽度，几乎可以对任何材料进行加工，且具有热效应小和加工精度高等独特优势，有望实现更高精度的砂轮修整。

关键词: 青铜结合剂金刚石砂轮, 超快激光, 砂轮修整, 精密加工

Abstract: Bronze-bonded diamond grinding wheel is widely used in the grinding of hard and brittle materials because of its excellent grinding performance and strong wear resistance. In order to improve the grinding performance, this study proposes a picosecond laser dressing study of the bronze-bonded diamond grinding wheel, and laser tangential profiling of the coarse-grained (100 #) bronze-bonded diamond grinding wheel. The power density threshold of laser removing bronze binder and diamond with pulse width of 10 ps is obtained by theoretical calculation. The influences of laser power density, laser scanning speed， grinding wheel speed and offset distance on laser dressing quality are studied, the dressing results of the grinding wheel is evaluated by the surface roughness, relief angle of abrasive grain and the protrusion height of the abrasive grain after dressing. The results show that when the laser power density I_40W= 2.60×10¹¹ W/cm², laser scanning speed v=360 mm/min, grinding wheel speed n=9 000 r/min, laser offset distance a=0.5 mm, the diamond grinding wheel surface with higher contour accuracy and better abrasive morphology are obtained. The ultrafast pulsed laser used in this study has extremely high peak power and extremely short pulse width. It can process almost any material, and has the unique advantages of small thermal effect and high machining accuracy. It is expected to achieve higher precision grinding wheel dressing.

Key words: bronze-bonded diamond grinding wheel, ultrafast laser, grinding wheel dressing, precision grinding

中图分类号:

TN249

郝明武, 姚鹏, 周嘉斌, 黎月明, 梁士通, 褚东凯, 黄传真. 皮秒激光切向修整青铜结合剂金刚石砂轮的影响因素研究[J]. 机械工程学报, 2024, 60(9): 229-240.

HAO Mingwu, YAO Peng, ZHOU Jiabin, LI Yueming, LIANG Shitong, CHU Dongkai, HUANG Chuanzhen. The Influencing Factors of Tangential Dressing of Bronze-bond Diamond Grinding Wheel by Picosecond Pulsed Laser[J]. Journal of Mechanical Engineering, 2024, 60(9): 229-240.

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皮秒激光切向修整青铜结合剂金刚石砂轮的影响因素研究

The Influencing Factors of Tangential Dressing of Bronze-bond Diamond Grinding Wheel by Picosecond Pulsed Laser

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