ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Thin-walled parts with complex configurations are extensively used in aerospace andprecise instrument industry. However, because of low stiffness, cutting forces, clamping forces andresidual stresses in cutting have been the main factors influenced on machining accuracy ofthin-walled parts. Furthermore, biggish deviation exists between practical finished surface andtheoretical value as a result of machining deformation caused by cutting force namely “cutterrelieving” phenomenon; besides, direct relation exists between determination of clamping force andgeneration of machining residual stress and cutting force, so it is necessary to build up accuratecutting force prediction model to improve the machining accuracy of thin-walled parts. Therefore,cutting force prediction model based on Johnson-Cook’s flow stress model and Oxley’s shear anglemodel has been developed, which takes the property of high strain, high strain ratio in area of cut andhigh cutting temperature into account fully and determines shear angle more accurately on the basis offorce balance principle; with different cutting and tool geometric parameters existing, performsimulation and experiment studies on cutting force prediction model, verify the validity of predictionmodel and obtain the response rules resulted from cutting force prediction model acting on cuttingand tool geometric parameters
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/57/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.392-394.1.pdf
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