金刚石工具加工SiO<sub>2f</sub>/SiO<sub>2</sub>复合材料的可行性研究

高航; 李睿祺; 许启灏; 兰宝华

doi:10.13394/j.cnki.jgszz.2021.1214

金刚石工具加工SiO_2f/SiO₂复合材料的可行性研究

doi: 10.13394/j.cnki.jgszz.2021.1214

大连理工大学机械工程学院, 辽宁大连 116000

基金项目: NCSF-辽宁联合基金（U1908232）

详细信息

作者简介:
高航，男，1962年生，博士，教授。主要研究方向:高效精密磨削技术与应用，精密与超精密技术与理论，数字化设计制造技术与应用。E-mail：hanggao4187@126.com

中图分类号: TG58；TG71；TB332；TQ164
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- HTML全文浏览量: 118
- PDF下载量: 55
- 被引次数: 0
出版历程
- 收稿日期: 2021-12-14
- 修回日期: 2022-03-28
- 录用日期: 2022-04-28
- 刊出日期: 2023-02-20

Feasibility study on SiO_2f/SiO₂ composites processed by diamond tools

College of Mechanical Engineering, Dalian University of Technology, Dalian 116000, Liaoning, China

摘要

摘要: 针对石英纤维增强陶瓷基复合材料（SiO_2f/SiO₂）制造的薄壁壳体零件加工过程中存在加工效率低、切削力较大易导致零件破裂和加工表面粗糙度不易达到要求等问题，为寻求零件可行的加工刀具和工艺参数，在阐述微刃切削原理基础上，用其研制的整体多刃PCD刀具和电镀金刚石磨头，开展金刚石工具加工SiO_2f/SiO₂复合材料的可行性研究。结果表明：采用基于微刃切削原理设计的整体多刃PCD刀具加工SiO_2f/SiO₂，因刀具锋利和多刃特点可以实现较大的切深并获得较大的切削效率，但是切削力相对较大；相比于整体多刃PCD刀具，电镀金刚石磨头加工SiO_2f/SiO₂时切削力较小，加工后工件表面质量较好，且其表面粗糙度较低；
- SiO_2f/SiO₂ /
- 切削力 /
- 表面粗糙度 /
- 表面质量
Abstract: The thin-wall shell parts manufactured by quartz fiber reinforced ceramic matrix composites have low machining efficiency and bigger cutting force, which can easily lead to broken parts and bad surface roughness not meeting the requirements. To solve these problems and seek feasible cutting tool and process parameters, based on the principles of micro cutting, the feasibility study of SiO_2f/SiO₂ was carried out by using the developed integral multi-edge PCD tool and electroplated diamond grinding tool. The experimental results show that the integral multi-edge PCD tool, designed based on the micro-edge cutting principle, can achieve a large cutting depth and a large cutting efficiency, but its cutting force is relatively huge. Compared with the integral multi-edge PCD tool, electroplated diamond grinding tool have lower cutting force, better surface quality and lower surface roughness.
- SiO_2f/SiO₂ /
- cutting force /
- surface roughness /
- surface quality

HTML全文

图 1 SiO_2f/SiO₂试验材料及其微观特征

Figure 1. SiO_2f/SiO₂ and their characteristics

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图 2 切削力测量系统

Figure 2. Cutting force measurement system

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图 3 试验刀具样件

Figure 3. Cutting tools for experiment

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图 4 连续刃切削的几何学分析

Figure 4. Geometric analysis of continuous edge cutting

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图 5 微刃切削和普通切削示意图

Figure 5. Micro edge cutting and ordinary cutting

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图 6 转速对切削力的影响

Figure 6. Influence of speed on cutting force

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图 7 进给速度对切削力的影响

Figure 7. Influence of feed speed on cutting force

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图 8 切削深度对切削力的影响

Figure 8. Influence of cutting depth on cutting force

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图 9 2种刀具加工表面微观形貌

Figure 9. Surface topography of the workpiece after machining with two tools

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图 10 主轴转速对表面粗糙度的影响

Figure 10. Influence of speed of mainshaft on surface roughness

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图 11 进给速度对表面粗糙度的影响

Figure 11. Effect of feed rate on surface roughness

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图 12 材料自身孔隙对表面粗糙度的影响

Figure 12. Influence of material' original pores on surface roughness

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图 13 PCD刀具后刀面原始形貌

Figure 13. Original appearance of PCD tool's flank

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图 14 PCD刀具切削后的后刀面形貌

Figure 14. Post-cutting profile of PCD tool

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图 15 金刚石磨头原始形貌

Figure 15. Original appearance of diamond grinding tool

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图 16 金刚石磨头磨粒脱落

Figure 16. Abrasive particles falling of the diamond grinding tool

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图 17 金刚石磨头磨粒崩碎

Figure 17. Abrasive particles' collapse of the diamond grinding tool

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表 1 切削力测量单因素试验参数

Table 1. Single factor test parameters of cutting force measurement

加工条件	参数或取值
刀具	整体多刃PCD铣刀，电镀金刚石磨头
主轴转速 n / (r·min⁻¹)	3 000，5 000，7 000，9 000
进给速度 v_f / (mm·min⁻¹)	20，40，60，80
切削深度 a_p / mm	0.1，0.2，0.3，0.4

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