### 刀具偏心跳动下侧铣硬脆材料的瞬时铣削力模型

1. 1.东北大学 机械工程与自动化学院，沈阳 110819
2.东北大学秦皇岛分校 控制工程学院，秦皇岛 066004
• 收稿日期:2023-04-23 修回日期:2023-05-30 接受日期:2023-09-19 出版日期:2024-02-25 发布日期:2023-11-07
• 通讯作者: 马廉洁 E-mail:mlj@mail.neu.edu.cn
• 基金资助:
国家自然科学基金(51975113)

### Instantaneous milling force model of side milling hard and brittle materials in the state of tool eccentricity and runout

Lianjie MA1,2(), Wenhao DU1, Zhen ZHAO1, Zhe QIU1

1. 1.School of Mechanical Engineering & Automation，Northeastern University，Shenyang 110819，China
2.School of Control Engineering，Northeastern University at Qinhuangdao，Qinhuangdao 066004，China
• Received:2023-04-23 Revised:2023-05-30 Accepted:2023-09-19 Online:2024-02-25 Published:2023-11-07
• Contact: Lianjie MA E-mail:mlj@mail.neu.edu.cn
• Supported by:
National Natural Science Foundation of China(51975113)

Abstract:

Taking side milling machinable microcrystalline ceramics as object， an instantaneous overall milling force model was built. The instantaneous milling force of end milling cutter side edge milling was studied under the condition of tool eccentricity and runout. The instantaneous cutting thickness and area were obtained through the hypocycloidal motion between the milling tool and the workpiece. The optimal solution for tool eccentricity and eccentricity angle was determined through linear search method. The precise solution of the instantaneous milling force action point was obtained using a one-dimensional search algorithm and expressed as the instantaneous rotation angle under the condition of tool eccentricity and jumping. A new instantaneous milling force model was established based on the Martellotti model. The instantaneous milling force model coefficients were identified using the least squares method. And from the perspective of the milling force action point （instantaneous rotation angle）， the variation characteristics of instantaneous milling force were studied. The validation results of milling experiments indicate that the predicted values of the milling force model are in good agreement with the experimental values， with an average relative error not exceeding 8%. Therefore， the instantaneous milling force model demonstrates high prediction accuracy.