CFRP加工用内排屑钻头排屑条件的仿真分析及试验研究

doi:10.3901/JME.2019.05.223

机械工程学报 ›› 2019, Vol. 55 ›› Issue (5): 223-231.doi: 10.3901/JME.2019.05.223

CFRP加工用内排屑钻头排屑条件的仿真分析及试验研究

王义文¹, 许成阳¹, 许家忠², 刘献礼¹

1. 哈尔滨理工大学机械动力工程学院哈尔滨 150080;
2. 哈尔滨理工大学自动化学院哈尔滨 150080

收稿日期:2018-03-19 修回日期:2018-08-28 出版日期:2019-03-05 发布日期:2019-03-05
通讯作者: 王义文(通信作者),男,1972年出生,博士,教授。主要研究方向为数控加工、机械加工表面的无损检测、机电产品的设计和开发及复合材料的钻削加工。E-mail:13946030110@126.com
作者简介:许成阳,男,1989年出生,博士研究生。主要研究方向为碳纤维复合材料吸气式自排屑钻削加工。E-mail:xuchengyang1989101@163.com
基金资助:
国家自然科学基金资助项目（51475127）。

Simulation Analysis and Experimental Study on Chip Removal Conditions of Internal Chip Removal Bits for CFRP Machining

WANG Yiwen¹, XU Chengyang¹, XU Jiazhong², LIU Xianli¹

1. School of Mechanical Engineering, Harbin University of Science and Technology, Harbin 150080;
2. School of Automation, Harbin University of Science and Technology, Harbin 150080

Received:2018-03-19 Revised:2018-08-28 Online:2019-03-05 Published:2019-03-05

摘要/Abstract

摘要： 钻削加工碳纤维复合材料（Carbon fiber reinforced polymer CFRP）时会产生粉末状切屑，能否及时排屑会影响刀具的使用寿命，扩散的切屑对环境、加工设备及操作者有较大的危害。针对碳纤维复合材料制孔加工中切屑无法实现实时回收的问题：提出一种新型钻削加工排屑工艺系统——吸气式内排屑系统，它能够及时有效地排出制孔加工中产生的切屑，实现绿色加工；以自主设计制造的吸气式内排屑系统用CFRP钻削专用PCD内排屑钻头为研究对象，在研究CFRP切屑性质和计算系统排屑所需最低气流速度的基础上，基于流体仿真软件Fluent，对内排屑钻头的排屑过程进行流体力学仿真，通过仿真得出：当刀具转速n=3 000 r/min、进给量f=0.06 mm/r、排屑负压P ≥ 9 kPa时，系统能够将加工时产生的切屑及时有效的排出；当排屑负压P=9 kPa、进给量f=0.06 mm/r、钻头转速n ≤ 3 000 r/min时，系统能够将加工时产生的切屑及时有效的排出；最后，搭建吸气式内排屑系统试验平台并制造PCD内排屑刀具，验证以上仿真和理论计算的正确性。

关键词: 内排屑系统, 内排屑钻头, 排屑负压, 钻头转速

Abstract: An Abstract:when drilling carbon fiber reinforced polymer (CFRP), the powder chip will be produced, and whether the chip can be removed in time will affect the service life of the tool, and the spread of chip has a great harm to the environment, processing equipment and operators. Aiming at the hole machining of carbon fiber composites in the chip can not achieve real-time recovery problems:A new type of drilling cuttings processing system - suction type chip system is put forward, which can effectively discharge swarf produced in hole machining, the realization of green processing. The aspirating internal chip removal system designed and manufactured is based on the CFD internal chip removal drill bit for CFRP drilling. Based on the study of CFRP chip properties and the minimum airflow speed required for system chip removal, based on the fluid simulation software Fluent, internal chip process fluid dynamics simulation drill are conducted. The simulation shows that:when the cutting speed of n=3 000 r/min and feed f=0.06 mm/r chip, the negative pressure is not less than P ≥ 9 kPa, the system can be generated when the chips in a timely and effective discharge; when the negative pressure chip P=9 kPa and feed f=0.06 mm/r, a bit speed is less than or equal to n ≤ 3 000 r/min, the system can be generated when the chips in a timely and effective discharge. Finally, a suction-type internal chip removal system test platform is built and manufacture chip removal tools in PCD to verify the correctness of the above simulation and theoretical calculations.

Key words: drill bit rotation speed, inner chip removing drill, negative pressure of chip removal, suction type internal chip removal system

中图分类号:

TG156

王义文, 许成阳, 许家忠, 刘献礼. CFRP加工用内排屑钻头排屑条件的仿真分析及试验研究[J]. 机械工程学报, 2019, 55(5): 223-231.

WANG Yiwen, XU Chengyang, XU Jiazhong, LIU Xianli. Simulation Analysis and Experimental Study on Chip Removal Conditions of Internal Chip Removal Bits for CFRP Machining[J]. Journal of Mechanical Engineering, 2019, 55(5): 223-231.

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CFRP加工用内排屑钻头排屑条件的仿真分析及试验研究

Simulation Analysis and Experimental Study on Chip Removal Conditions of Internal Chip Removal Bits for CFRP Machining

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