轴向超声振动辅助铣削力的建模与实验研究

魏学涛; 岳彩旭; 刘献礼; 严复钢; 魏士亮; StevenY. Liang

doi:10.13433/j.cnki.1003-8728.20200288

轴向超声振动辅助铣削力的建模与实验研究

doi: 10.13433/j.cnki.1003-8728.20200288

1.
哈尔滨理工大学高效切削及刀具国家地方联合工程实验室, 哈尔滨 150080
2.
佐治亚理工学院乔治·W·伍德拉夫机械工程学院, 亚特兰大 30332

基金项目:

国家自然科学基金国际(地区)合作与交流重点项目 51720105009

黑龙江省自然科学基金优秀青年项目 YQ2019E029

详细信息

作者简介:
魏学涛(1995-), 硕士研究生, 研究方向为超声振动辅助加工, 759361080@qq.com

通讯作者:
岳彩旭, 教授, 博士生导师, yuecaixu@163.com

中图分类号: TG663
计量
- 文章访问数: 284
- HTML全文浏览量: 47
- PDF下载量: 35
- 被引次数: 0
出版历程
- 收稿日期: 2020-06-01
- 刊出日期: 2021-12-05

Modeling and Experimental Study on Axial Ultrasonic Vibration-Assisted Milling Force

1.
The lab of National and Local United Engineering for High-Efficiency Cutting & Tools, Harbin University of Science and Technology, Harbin 150080, China
2.
George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta 30332, USA

摘要

摘要: 轴向超声振动辅助铣削工艺是近年来铣削领域的最新进展之一, 目前对于轴向超声振动铣削力建模的研究相对较少。针对这一问题, 提出了一个考虑轴向振动的超声铣削力建模方法。根据空间中刀尖运动轨迹的坐标, 建立了准确的瞬时切厚模型, 得到不同切削角度下切屑形成力和摩擦力模型。将铣削力与未变形的切屑截面面积建立函数关系, 考虑了瞬时未变形切厚模型以及瞬时切深模型, 得到了轴向冲击力模型。结合切屑形成力模型、摩擦力模型和轴向冲击力模型得到轴向超声振动辅助铣削力模型。研究结果表明: 预测的铣削力变化趋向与实验测得的铣削力变化趋向吻合, 最大峰值力的误差范围在7.53%~17.35%之间。本文结果将为超声振动辅助铣削工艺的优化研究提供理论基础。
- 轴向振动 /
- 超声铣削 /
- 解析模型 /
- 铣削力
Abstract: Axial ultrasonic vibration assisted milling technology is one of the latest developments in the field of milling. At present, there are a few studying on the modeling for the milling force. To solve this problem, an ultrasonic milling force modeling method by considering the axial vibration is proposed. According to the coordinates of the movement trajectory of the tool tip in space, the accurate instantaneous cutting thickness model was established, and the chip forming force and friction force models were obtained at different cutting angles. The functional relationship between the impact force and the area of undeformed cut thickness is established, and the instantaneous model of undeformed cut thickness and the instantaneous model for the cutting depth are considered, and the axial impact force model is obtained. Combining the chip forming force model, the friction force model and the axial impact force model, the axial ultrasonic vibration assisted milling force model is sorted out. The result by comparing the experimental value and the predicted of the model shows that the predicted milling force change is consistent with the experimentally measured milling force change, and the maximum peak force contrast error is between 7.53% and 17.35%. The results of this work will provide a theoretical basis for optimizing the milling process assisted by ultrasonic vibration.
- axial vibration /
- ultrasonic milling /
- analytical model /
- milling forces

HTML全文

图 1 超声振动辅助铣削示意图

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图 2 轴向超声振动微铣削双刃运动轨迹图

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图 3 超声振动辅助铣削示意图

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图 4 超声振动铣削瞬时深度

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图 5 瞬时切削厚度

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图 6 Merchant模型

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图 7 实验平台

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图 8 预测值与实验值波形对比图

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图 9 实验与预测铣削力峰值对比

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表 1 刀具参数

参数	参数值
材料	硬质合金
螺旋角	38°
前角	8°
后角	9°
齿间角	90°

下载: 导出CSV

表 2 实验加工参数

参数	参数值
切削速度/(m·min^-1)	30, 40, 50, 65
进给速度/(mm·min^-1)	400, 600
铣削深度/mm	1.2, 6, 10
铣削宽度/mm	0.5

下载: 导出CSV

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