ISSN:
1662-9752
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:
Through combining turning experiments and FE simulations, this paper studied theeffects of force, temperature and residual stress of machined surface on high speed hard turningGCr15 bearing steel hardened to HRC60-62 with three kinds of ordinary edge preparation(sharp-edge, hone and chamfer). The experiment and simulation results indicated that thediathermanous proportion of chamfered edge preparation to tool and machined surface is less, andthis distribution of cutting temperatures is useful for tool life and machined surface quality. Thesimulation results showed that cutting force had a descending tendency with increasing of cuttingspeed, which is in accordance with the change rules of machining general rigidity material, and itproved that FE simulations have good precision. The simulation results of residual stress ofmachined surface showed that residual tensile stress existed in machined surface using both honedand chamfered tools, and a highest compressive stress (about -200MPa) existed among 150-200μmof the depth into the workpiece surface. The difference was that the depth of superficial hardenlayer with honed tools is larger than that with chamfered tools
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/14/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.532-533.412.pdf
Permalink
