TY - JOUR
T1 - Determination of the minimum chip thickness and the effect of the plowing depth on the residual stress field in micro-cutting of 18 Ni maraging steel
AU - Yao, Yang
AU - Zhu, Hongtao
AU - Huang, Chuanzhen
AU - Wang, Jun
AU - Zhang, Pu
AU - Yao, Peng
AU - Wang, Xiaodan
N1 - Funding Information:
This work is supported by the National Natural Science Foundation of China (51675312, U1708256). Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Publisher Copyright:
© 2019, Springer-Verlag London Ltd., part of Springer Nature.
PY - 2020/1/1
Y1 - 2020/1/1
N2 - Due to the cutting-edge radius effect in micro-cutting, there exists some material sticking in front of the cutting-edge named stagnation zone, above which the material flows as chips. The location of the stagnation zone is reported to be associated with the minimum chip thickness in micro-cutting, which is a significant value influencing the cutting mechanics and the machined surface integrity in micro-cutting. The determination of the minimum chip thickness is of great importance in micro-cutting process. In this paper, the cutting force analysis on the shearing plane was carried out considering the ductile fracture and cutting-edge radius. Based on the cutting force analysis, this paper proposed a new method to determine the minimum chip thickness in micro-cutting of 18Ni maraging steel through finite element simulation. The minimum chip thickness was calculated to be 0.25 times the cutting-edge radius, which is in a good agreement with the velocity distribution analysis of the material around the cutting-edge. In addition, the effect of the plowing depth which was equivalent to the height of the stagnation zone on the residual stress filed was investigated using energy criterion. The energy stored in the machined surface increased with the plowing depth, resulting from the increasing thermal-mechanical load due to plowing.
AB - Due to the cutting-edge radius effect in micro-cutting, there exists some material sticking in front of the cutting-edge named stagnation zone, above which the material flows as chips. The location of the stagnation zone is reported to be associated with the minimum chip thickness in micro-cutting, which is a significant value influencing the cutting mechanics and the machined surface integrity in micro-cutting. The determination of the minimum chip thickness is of great importance in micro-cutting process. In this paper, the cutting force analysis on the shearing plane was carried out considering the ductile fracture and cutting-edge radius. Based on the cutting force analysis, this paper proposed a new method to determine the minimum chip thickness in micro-cutting of 18Ni maraging steel through finite element simulation. The minimum chip thickness was calculated to be 0.25 times the cutting-edge radius, which is in a good agreement with the velocity distribution analysis of the material around the cutting-edge. In addition, the effect of the plowing depth which was equivalent to the height of the stagnation zone on the residual stress filed was investigated using energy criterion. The energy stored in the machined surface increased with the plowing depth, resulting from the increasing thermal-mechanical load due to plowing.
KW - Micro-cutting
KW - Minimum chip thickness
KW - Residual stress field
KW - Stagnation zone
KW - Strain energy
UR - http://www.scopus.com/inward/record.url?scp=85075360493&partnerID=8YFLogxK
U2 - 10.1007/s00170-019-04439-x
DO - 10.1007/s00170-019-04439-x
M3 - Article
AN - SCOPUS:85075360493
SN - 0268-3768
VL - 106
SP - 345
EP - 355
JO - International Journal of Advanced Manufacturing Technology
JF - International Journal of Advanced Manufacturing Technology
IS - 1-2
ER -