基于Deform−3D的阶梯钻钻削Inconel718有限元仿真

王宙彪; 周俊

doi:10.12299/jsues.22-0129

基于Deform−3D的阶梯钻钻削Inconel718有限元仿真

doi: 10.12299/jsues.22-0129

王宙彪,
周俊^,

上海工程技术大学机械与汽车工程学院, 上海 201620

详细信息

作者简介:
王宙彪（1995−），男，在读硕士，研究方向为金属切削理论. E-mail：18339067735@163.com

通讯作者:
周　俊（1967−），女，副教授，博士，研究方向为制造系统的建模、仿真. E-mail：shuu_shun@163.com

中图分类号: TG52;TP391.9
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- PDF下载量: 54
- 被引次数: 0
出版历程
- 收稿日期: 2022-05-06
- 刊出日期: 2022-12-30

Finite element simulation of step drilling Inconel718 based on Deform−3D

WANG Zhoubiao,
ZHOU Jun^,

School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

摘要

摘要:
镍基高温合金Inconel718在600 ℃以上的高温环境下能够保持优秀的机械性能，被广泛应用于航空航天等重要科技工业领域. 但其钻削过程中易出现钻削力大、钻削区域温度过高、刀具磨损较大等现状，属于难加工材料. 针对此，以麻花钻为基础设计一种阶梯钻头，引入直径比（第1阶梯与第2阶梯直径之比）概念，并利用Deform−3D软件对两种钻头钻削Inconel718的过程进行有限元仿真. 结果显示，相比麻花钻，在同样的钻削环境下，阶梯钻平均能降低25.5%的轴向力，刀具磨损最大降低33.9%，工件钻削区域温度更低且钻头温度分布更理想.
- 阶梯钻 /
- 高温合金 /
- 直径比 /
- 轴向力 /
- 刀具磨损
Abstract:
Nickel-based superalloy Inconel718 can maintain excellent mechanical properties at high temperatures above 600 ℃, so it is widely used in aerospace and other important scientific and industrial fields. It is a difficult-to-process material for situations of large drilling force, high temperature in drilling area and large tool wear during drilling process. A step drill was designed based on twist drill and the concept of diameter ratio (the ratio of the diameter of the first step to the second step) was introduced, and finite element simulations of Inconel718 drilling with two kinds of drill bits were carried out by using Deform−3D software. The results show that the step drilling can reduce the axial force by 25.5% on average compared with twist drilling, the maximum tool wear can reduced by 33.9%, the temperature of the workpiece drilling area was more lower and the bit temperature distribution under the same drilling environment was more better.
- step drill /
- superalloy /
- diameter ratio /
- axial force /
- tool wear

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图 1 阶梯钻几何结构图

Figure 1. Geometric structure of step drill

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图 2 阶梯钻钻削仿真模型

Figure 2. Drilling simulation model of step drill

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图 3 不同钻头轴向力随时间变化曲线

Figure 3. Variation curves of axial force of different bits with time

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图 4 直径比0.8阶梯钻轴向力变化示意图

Figure 4. Schematic diagram of axial force variation of step drill with diameter ratio of 0.8

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图 5 不同直径比钻头的平均轴向力

Figure 5. Average axial force of bits with different diameter ratios

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图 6 不同阶段的工件温度分布图

Figure 6. Temperature distribution of workpiece at different stages

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图 7 不同阶段钻头的温度分布图

Figure 7. Temperature distribution of drill bit at different stages

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图 8 钻头磨损深度分布图

Figure 8. Distribution of drill bit wear depth

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表 1 阶梯钻和麻花钻参数

Table 1. Parameters of step drill and twist drill

刀具	第1钻顶角Φ₁/(°)	第2钻顶角Φ₂/(°)	第1阶梯直径$ {D}_{1}/{\rm{mm}} $	第2阶梯直径$ {D}_{2}/{\rm{mm}} $	螺旋角$ \beta /$(°)	横刃补角ψ/(°)	刃带宽$ b/{\rm{mm}} $	刃带高$ c/{\rm{mm}} $
阶梯钻	118	90	3.5/4.0/4.5	5	30	126	0.2	0.55
麻花钻	118	—	—	5	30	126	0.2	0.55

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表 2 Inconel718的J−C参数^[12]

Table 2. J−C parameters of Inconel718^[12]

A/MPa	B/MPa	C	m	n
1012	513	0.0271	2.54	0.422

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表 3 刀具材料的性能参数

Table 3. Performance parameters of tool materials

名称	弹性模量/GPa	泊松比	密度/(kg•m⁻³)	热导率/(W·m⁻¹•K⁻¹)	比热容/(J·kg⁻¹•K⁻¹)	抗弯强度/MPa	硬度(HRA)
YG8	600	0.22	14500	75.4	220	4470	89

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表 4 工件材料的性能参数

Table 4. Performance parameters of workpiece materials

名称	弹性模量/GPa	泊松比	密度/(kg•m⁻³)	热导率/(W·m⁻¹•K⁻¹)		比热容/(J·kg⁻¹•K⁻¹)	抗拉强度/MPa	屈服强度/MPa
Inconel718	210	0.3	8280	14.6	435		$1\;430$	1110

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