Analysis of Nonlinear Characteristics of Milling Force in Processing Splicing Joint Area of Automobile Mold
Analysis of Nonlinear Characteristics of Milling Force in Processing Splicing Joint Area of Automobile Mold
复制标题
汽车模具拼接区加工铣削力非线性特性分析
DOI：
10.1080/00150193.2021.1902770
复制
发表时间：
2021-07
期刊：
影响因子：
0.8
通讯作者：
Jin Longchang
中科院分区：
文献类型：
--
作者：
Rongyi Li;Jin Longchang
汽车胆罩的结构和型腔表面淬硬钢模具非常复杂。在冲压过程中，局部结构承受比型面更高的挤压应力，往往造成局部磨损甚至开裂。多重硬度的工艺。根据模具各部分的特点，采用拼接接头，保证模具的使用寿命。反复切削所产生的冲击载荷总是导致整个切削过程中切削力的不均匀。降低模具表面的加工质量。针对模具拼接区球头铣削过程，首先分析了刀具工件切削接触的冲击行为。通过建立考虑影响因素的瞬态切屑厚度模型，建立了球端铣削剪切区铣削力的预测模型。其次，进行了基于单硬度和多硬度的Cr12MoV模具钢球头铣削切削力测量实验，对模型进行了验证。基于铣削力信号与被加工表面粗糙度数据进行相关分析，得到它们在不同加工状态下的相关性。最后，利用ApEn分析了多硬度拼接状态下铣削力信号的非线性特征。探讨了铣削力对加工质量的影响。实验和分析结果表明，在多硬度拼接区铣削力信号表现出比单硬度拼接区更明显的混沌特征。这为改善工件表面质量，提高切削效率提供了依据。
The structure and the cavity surface hardened steel mold of automo bile cover is very complex. In the stamping process, the local struc ture bears higher extrusion stress than the type surface, which often causes local wear and even cracking. The process of multi-hardness.splicing joint is applied to ensure the service life of the die according to the features of each part of the mold. The impact load caused by the repeatedly cutting in which always leads to the unevenness of cutting force in the whole process. The machining quality of the mold surface is reduced. Aiming at the ball-end milling process in mold splicing area, first, the impact behavior of tool workpiece cut ting contact is analyzed. A prediction model for ball-end milling force in the splicing area is established by establishing the transient chip thickness model which considering the impact factors. Second, the experiment of cutting force measurement for Cr12MoV mold steel ball-end milling which is based on single hardness and multi hardness are carried out to verify the model. Cross-correlation ana lysis based on data of milling force signal and machined surface roughness is carried out for getting the relevance of them in differ ent processing states. Finally, the ApEn is used to analyze the nonlin ear characteristics of the milling force signal at the multi-hardness splicing state. This explores the influence of the milling force on the machining quality. The experimental and analytical results show that the milling force signal exhibits more obvious chaotic characteristics in the multi-hardness stitching area than that in the single hardness region. This provides a basis for improving workpiece surface quality and improving cutting efficiency.
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DOI：
10.1115/1.1826077
发表时间：
2005-02
影响因子：
4
作者：
J. Ko;D. Cho
通讯作者：
J. Ko;D. Cho
影响因子：
5.6
作者：
M. Banihasan;F. Bakhtiari-Nejad
通讯作者：
M. Banihasan;F. Bakhtiari-Nejad
基于刀具运动分析的曲线几何形状五轴球头铣削切削力建模方法
DOI：
10.1115/1.4001420
发表时间：
2010-08
影响因子：
4
作者：
通讯作者：
--
影响因子：
5.6
作者：
H. Lankarani;P. Nikravesh
通讯作者：
H. Lankarani;P. Nikravesh
DOI：
10.1016/0167-2789(96)00106-6
发表时间：
1996-11
期刊：
Physica D: Nonlinear Phenomena
影响因子：
--
作者：
A. Stefański;T. Kapitaniak;J. Brindley
通讯作者：
A. Stefański;T. Kapitaniak;J. Brindley