DocumentCode :
481319
Title :
Analysis of the tool-chip contact length incorporating the effects of shear strain
Author :
Wang, Jiachun ; Zhu, Lina
Author_Institution :
School of Mechanical Engineering, Yanshan University, China
fYear :
2006
fDate :
6-7 Nov. 2006
Firstpage :
1331
Lastpage :
1334
Abstract :
In metal cutting, it has been acknowledged that the tool-chip contact length significantly affects many aspects of machining, such as chip formation, cutting temperatures, cutting forces, tool wear and tool life. As a result, it has great influence on finished surface quality and accuracy. A slip-line model of tool-chip contact length with two rake faces tool is simplified in this paper, and based on Dewhurst and Collins’s matrix technique for numerically solving slip-line problems and Powell’s algorithm of nonlinear optimization, the mathematical formulation of the tool-chip contact length is resolved. Because of the variation of the work material’s shear strain, it must be taken into account the effect of the shear strain on the tool-chip contact length. From the formulation of the tool-chip contact length, it can be seen that tool geometry, cutting conditions and the stress boundary conditions have great influence on the tool-chip contact length. In addition, the predicted ratio of tool-chip contact length L / t1 is in good agreement with theoretical and experimental results gained by other researchers.
Keywords :
Slip-line model; chip thickness; shear strain; tool-chip contact length;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Technology and Innovation Conference, 2006. ITIC 2006. International
Conference_Location :
Hangzhou
ISSN :
0537-9989
Print_ISBN :
0-86341-696-9
Type :
conf
Filename :
4752211
Link To Document :
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