金刚石涂层刀具高速铣铝合金平面切削毛刺研究

邵伟平; 张韬; 李家成; 莫小青

doi:10.13394/j.cnki.jgszz.2023.0130

金刚石涂层刀具高速铣铝合金平面切削毛刺研究

doi: 10.13394/j.cnki.jgszz.2023.0130

无锡职业技术学院机械技术学院, 江苏无锡 214121

基金项目: 江苏省自然科学基金（BK20201142）。

详细信息

作者简介:
邵伟平，男，1973年生，高级实验师。主要研究方向：数控技术与切削加工。E-mail：swp523@sina.com

中图分类号: TG58；TG714；TG544
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出版历程
- 收稿日期: 2023-06-16
- 修回日期: 2023-07-26
- 录用日期: 2023-08-07
- 网络出版日期: 2023-11-06
- 刊出日期: 2024-04-01

Research on cutting burrs in high speed milling of aluminum alloy plane with diamond coated tools

Department of Mechanical Technology, Wuxi Institute of Technology, Wuxi 214121, Jiangsu, China

摘要

摘要: 采用热丝 CVD 法制备纳米与微米金刚石薄膜涂层刀具，利用场发射扫描电镜表征其薄膜表面形貌。用已制备的 CVD 金刚石涂层刀具，在无润滑干切条件下高速顺、逆端铣铝合金平面，研究CVD金刚石涂层刀具切削时的棱边毛刺特点与大小；并对纳米金刚石涂层刀具高速顺铣切削工艺参数进行正交试验，探究取得少无切削毛刺的切削参数与切削工艺。结果表明：工件铣削后棱边毛刺分布不均匀，顺铣毛刺稀疏，尺寸较小，其中纳米金刚石涂层刀具顺铣棱边毛刺高度平均值为32.08 μm，仅为微米金刚石涂层刀具顺铣毛刺高度的46.5%。纳米金刚石涂层刀具高速顺铣平面，对棱边毛刺影响最大的是v_c，其次为v_f，a_e的影响最小，最优参数组合为a_e=4 mm、v_f=2 000 mm/min、v_c=400 m/min，铣削后毛刺高度平均值为21.29 μm。当金刚石涂层刀具端铣铝合金平面时，为取得较小的棱边毛刺，优选纳米金刚石涂层刀具，采用顺铣棱边的切削方式与切削工艺，以及相应的高速切削参数。
- 金刚石涂层刀具 /
- 端铣 /
- 棱边毛刺 /
- 切削参数 /
- 工艺路径
Abstract: The nano and micro diamond film coated tools were prepared by the hot wire CVD method.The surface morphology of the film was characterized by field emission scanning electron microscopy. The prepared CVD diamond coated tools were used to end mill the aluminum alloy surface forward and backward at high speed under the condition of dry cutting without lubrication. It studies the characteristics and size of edge burrs during high-speed end milling of aluminum alloy using CVD diamond coated tools. It carries out orthogonal tests on cutting process parameters to explore the cutting parameters and processes with little or no cutting burr when nano-diamonds coated tools are used for high-speed forward milling. The results show that the distribution of burrs on the edges of the workpiece is uneven after milling, and the burrs during forward milling are sparse and small in size. Among them, the average height of burrs on the edges during forward milling with nano diamond coated tools is 32.08 μm, only 46.5% of the forward milling burr height of micrometer diamond coated tools. When nano diamond coated tools are used for high-speed forward milling of flat surfaces, v_c has the greatest impact on edge burrs, followed by v_f, and a_e has the weakest impact. The optimal parameter combination for high-speed milling is a_e=4 mm, v_f=2 000 mm/min, and v_c=400 m/min. The average burr height after milling is 21.29 μm. When the diamond coated tool is used to end mill the aluminum alloy plane, in order to obtain a small burr, the nano diamonds coated tool is selected, the cutting method of forward milling and the corresponding high-speed cutting parameters are adopted.
- diamond coated tools /
- end milling /
- edge burrs /
- cutting parameters /
- process path

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图 1 金刚石涂层刀具表面形貌图

Figure 1. Surface topography of diamond coated tools

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图 2 MCD与NCD涂层刀具顺、逆端铣工件棱边显微图像

Figure 2. Micro image of edges of MCD and NCD coated cutting tools for forward and backward end milling of workpieces

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图 3 MCD与NCD涂层刀具切削毛刺高度值对比图

Figure 3. Comparison of cutting burr height values between MCD and NCD coated tools

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图 4 平面铣削工艺路径规划图

Figure 4. Planar milling process path planning diagram

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表 1 切削毛刺正交实验因素水平表

Table 1. orthogonal experimental factors for cutting burrs

水平	因素
水平	径向切削深度 a_e/ mm A	进给速度 v_f / (mm·min⁻¹) B	切削速度 v_c / (m·min⁻¹) C
1	3	1 000	300
2	4	2 000	400
3	5	3 000	500

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表 2 切削毛刺正交实验组合及结果

Table 2. Orthogonal test combination and results for cutting burrs

试验编号	参数组合	毛刺高度h / μm	毛刺平均高度$\overline h $ / μm
1	A₁B₁C₁	104.82，84.83，48.88，80.75，97.82	83.42
2	A₁B₂C₂	24.48，19.63，18.72，23.24，24.23	22.06
3	A₁B₃C₃	31.71，95.31，112.04，99.39，90.55	85.80
4	A₂B₁C₂	34.57，54.07，24.44，44.12，46.43	34.57
5	A₂B₂C₃	29.33，24.59，26.84，34.71，28.88	28.87
6	A₂B₃C₁	46.67，70.63，60.61，50.08，65.26	58.65
7	A₃B₁C₃	36.72，53.08，151.54，46.54，72.32	72.04
8	A₃B₂C₁	49.23，88.61，53.71，73.37，65.13	66.01
9	A₃B₃C₂	48.48，65.55，60.37，51.41，61.08	57.38

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表 3 各切削参数影响的毛刺高度均值以及极差R值

Table 3. The average and range R values of burr height affected by various cutting parameters

项目	取值
项目	径向切削深度 a_e / mm A	供给速度 v_f / (mm·min⁻¹) B	铣削速度 v_c / (m·min⁻¹) C
均值t₁	63.76	63.34	69.36
均值t₂	40.70	38.98	38.00
均值t₃	65.14	67.28	62.24
极差R	24.44	28.30	31.36

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