SiCp/Al复合材料端磨磨削力模型构建与试验研究

曹桂新; 董志国; 张泽华; 侯张敏

doi:10.13394/j.cnki.jgszz.2022.0112

SiCp/Al复合材料端磨磨削力模型构建与试验研究

doi: 10.13394/j.cnki.jgszz.2022.0112

曹桂新^{1, 2},
董志国^{1, 2, ,},
张泽华^{1, 2},
侯张敏^{1, 2}

1.
太原理工大学机械与运载工程学院, 太原 030024
2.
精密加工山西省重点实验室, 太原 030024

基金项目: 山西省自然科学基金《颗粒增强型复合材料的两相微观结构端面轮廓序列三维模型重构测量系统的开发》（2018-03-421045）

详细信息

通讯作者:
董志国，男，1975年生，博士、副教授。主要研究方向：磨料流光整加工。E-mail：dong_zhiguo@126.com

中图分类号: TG58；TG74
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出版历程
- 收稿日期: 2022-07-18
- 修回日期: 2022-09-07
- 录用日期: 2022-09-16
- 刊出日期: 2023-06-20

Model construction and experimental research on end grinding force of SiCp/Al composites

CAO Guixin^{1, 2},
DONG Zhiguo^{1, 2
, ,},
ZHANG Zehua^{1, 2},
HOU Zhangmin^{1, 2}

1.
College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2.
Shanxi Key Laboratory of Precision Machining, Taiyuan 030024, China

摘要

摘要: 针对SiCp/Al逐层磨削两相三维重构需要精密高效端磨的问题，基于单颗磨粒磨削SiCp/Al的磨削力，在考虑切屑变形力、摩擦力、SiC颗粒断裂破碎力的基础上，建立SiCp/Al的端磨磨削力解析模型，结合试验研究切削速度、工件进给速度和轴向磨削深度等参数对加工表面粗糙度的影响规律，并探讨SiCp/Al金相表面快速磨削的加工工艺。结果表明：构建的端磨磨削力解析模型与试验的法向磨削力F_n的总体平均误差为12.98%，切向磨削力F_t的总体平均误差为3.49%；表面粗糙度随切削速度增大而减小，随进给速度和轴向磨削深度的增大而增大；用磨料颗粒基本尺寸为13.0 μm的磨具，经过6次磨抛获得良好金相表面，所需磨削加工时间为600 s，可实现SiCp/Al金相表面的快速磨削。
- 精密磨削 /
- 磨削力模型 /
- SiCp/Al /
- 金相表面
Abstract: Aiming at the problem that precision and efficient end grinding is required for the two-phase 3D reconstruction of SiCp/Al grinding layer by layer, an analytical model of end grinding force of SiCp/Al is established based on the grinding force of SiCp/Al grinding with a single abrasive particle, considering the chip deformation force, friction force and the breaking force of SiC particles. The effects of cutting speed, workpiece feed speed and axial grinding depth on the surface roughness were studied by experiments. The machining technology of SiCp/Al metallographic surface rapid grinding was also discussed. The results show that the overall average error between the analytical model of end grinding force and the experimental normal grinding force F_n is 12.98%, and that the overall average error of tangential grinding force F_t is 3.49%. The surface roughness decreases with the increase of cutting speed and increases with the increase of feed speed and axial grinding depth. The grinding time for obtaining a good metallographic surface is 600 s after 6 grinding times with a grinding tool of 13.0 μm grain size. The rapid grinding of SiCp/Al metallographic surface can be realized.
- precision grinding /
- grinding force model /
- SiCp/Al /
- metallographic surface

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图 1 端磨示意图

Figure 1. Schematic diagram of end grinding

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图 2 工具与工件的磨削接触区

Figure 2. Grinding contact zone between grinding wheel and workpiece

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图 3 加工试验装置

Figure 3. Processing test device

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图 4 磨削力随切削速度变化的关系

Figure 4. Relationship between grinding force and cutting speed

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图 5 磨削力随进给速度变化的关系

Figure 5. The relation between grinding force and feed speed

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图 6 磨削力随轴向磨削深度变化的关系

Figure 6. The relationship between tangential grinding force and axial grinding depth

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图 7 表面粗糙度

Figure 7. Surface roughness

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图 8 工件表面形貌图

Figure 8. Surface topography of the workpiece

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图 9 加工试验结果

Figure 9. Machining test results

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图 10 工件金相表面

Figure 10. Metallographic surface of workpiece

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表 1 系数确定用试验参数

Table 1. Test parameters for coefficient determination

编号	切削速度 v_s/ (mm·s⁻¹)	进给速度 v_w/ (mm·s⁻¹)	径向磨削深度 a_p/ mm	轴向磨削深度 b / mm
1	1 253.46	0.03	3	0.005
2	1 253.46	0.05	3	0.008
3	3 313.65	0.05	3	0.008
4	3 313.65	0.03	3	0.008

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表 2 d_av与v_w对应表

Table 2. d_av and v_w corresponding table

v_w/ (mm·s⁻¹)	0.02	0.03	0.04	0.05
d_av/ mm	5.994	5.991	5.988	5.985

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表 3 各试验系数参数值

Table 3. Parameter values of each test coefficient

系数	数值
K₁	2.735 291 788 × 10⁷
K₂	6.516 577 4 × 10⁷
K₃	4.055 336 × 10⁶
K₄	32.68
K₅	5.888 781 × 10⁶
K₆'	1.118 88 × 10⁷
K₇'	3.164 09 × 10⁷

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表 4 试验参数

Table 4. Test parameters

编号	切削速度 v_s/ (mm·s⁻¹)	进给速度 v_w/ (mm·s⁻¹)	轴向磨削深度 b / mm	径向磨削深度 a_p/ mm
1	1 253.46	0.05	0.005	3
2	1 880.19	0.05	0.005	3
3	2 506.92	0.05	0.005	3
4	3 313.65	0.05	0.005	3
5	1 253.46	0.02	0.005	3
6	1 253.46	0.03	0.005	3
7	1.253.46	0.04	0.005	3
8	1 253.46	0.05	0.005	3
9	1 253.46	0.05	0.004	3
10	1.253.46	0.05	0.006	3
11	1 253.46	0.05	0.008	3
12	1 253.46	0.05	0.00	3

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参考文献(11)

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