基于微结构化工具的大长径比微齿内螺纹精密磨削技术研究

doi:10.3901/JME.2025.05.330

机械工程学报 ›› 2025, Vol. 61 ›› Issue (5): 330-342.doi: 10.3901/JME.2025.05.330

• 制造工艺与装备 • 上一篇

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基于微结构化工具的大长径比微齿内螺纹精密磨削技术研究

孟庆宇¹, 孟变变¹, 郭兵¹, 郭振飞¹, 吴贵成², 李川渠², 赵清亮¹

1. 哈尔滨工业大学机电工程学院哈尔滨 150001;
2. 四川航天烽火伺服控制技术有限公司成都 611130

收稿日期:2024-03-19 修回日期:2024-09-01 发布日期:2025-04-15
作者简介:孟庆宇，男，1995年出生，博士研究生。主要研究方向为磨削动力学。E-mail：mengqingyu0205@163.com;郭兵(通信作者)，男，1983年出生，博士，教授，博士研究生导师。主要研究方向为精密超精密加工。E-mail：guobing@hit.edu.cn
基金资助:
国家自然科学基金企业创新发展联合基金资助项目(U20B2032)。

Precision Grinding Technology of Micro-tooth Internal Thread with Large Aspect Ratio Based on Microstructured Tools

MENG Qingyu¹, MENG Bianbian¹, GUO Bing¹, GUO Zhenfei¹, WU Guicheng², LI Chuanqu², ZHAO Qingliang¹

1. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001;
2. Sichuan Aerospace Fenghuo Servo Control Technology Co., Ltd., Chengdu 611130

Received:2024-03-19 Revised:2024-09-01 Published:2025-04-15

摘要/Abstract

摘要： 在大长径比微齿内螺纹磨削过程中，加工干涉、磨削变形及振动始终是影响加工精度的重要原因。针对上述问题，开展了微结构化大磨粒砂轮的微齿内螺纹磨削技术研究。采用平行轴磨削的加工方式，设计了微结构砂轮的截形误差。分析大长径比减振复合磨杆的静态、谐响应和模态性能，从而进行磨削系统结构优化。基于非简化随机磨粒模型，建立了大长径比磨削系统的动力学模型。最后，通过相关实验验证了理论模型的准确性，并进一步优化磨削参数。结果表明：微结构化工具具有调控磨削振动的能力，理论与实验结果的最大误差为8.1%。所加工的螺纹平均齿高为374μm，平均齿形角度为90.1 °，平均底部圆角半径为23 μm，平均螺距为1.006 mm，满足大长径比内螺纹的加工精度需求。

关键词: 微结构砂轮, 内螺纹, 精密磨削, 大长径比, 动力学

Abstract: In the grinding process of micro-tooth internal thread with large aspect ratio, the machining interference, grinding deformation and vibration are always important reasons that affect the machining accuracy. Aiming at the above problems, the micro-tooth internal thread grinding technology of microstructured grinding wheel with coarse abrasive grains is studied. The cross-section of cubic boron nitride (CBN) grinding wheel is designed by parallel axis grinding. The static, harmonic and modal performance of the composite grinding rod with large aspect ratio are analyzed, and the grinding system structure is optimized. Based on the non-simplified random abrasive grains model, the dynamic model of grinding system with large aspect ratio is established. Finally, the accuracy of the theoretical model is verified by related experiments, and the grinding parameters are further optimized. The results show that the maximum error between theoretical and experimental results is 8.1%. Microstructured tools have the ability to control grinding vibration. The average tooth height is 374 μm, thread profile angle is 90.1 °, the average bottom fillet radius is 23 μm, the average pitch is 1.006 mm, which meets the machining accuracy requirements of internal thread with large aspect ratio.

Key words: microstructured grinding wheel, internal thread, precision grinding, large aspect ratio, dynamics

中图分类号:

TH117
TH161

孟庆宇, 孟变变, 郭兵, 郭振飞, 吴贵成, 李川渠, 赵清亮. 基于微结构化工具的大长径比微齿内螺纹精密磨削技术研究[J]. 机械工程学报, 2025, 61(5): 330-342.

MENG Qingyu, MENG Bianbian, GUO Bing, GUO Zhenfei, WU Guicheng, LI Chuanqu, ZHAO Qingliang. Precision Grinding Technology of Micro-tooth Internal Thread with Large Aspect Ratio Based on Microstructured Tools[J]. Journal of Mechanical Engineering, 2025, 61(5): 330-342.

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基于微结构化工具的大长径比微齿内螺纹精密磨削技术研究

Precision Grinding Technology of Micro-tooth Internal Thread with Large Aspect Ratio Based on Microstructured Tools

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