An experimental study of the effect of back rake angle in rock cutting
MetadataShow full item record
The objective of this paper is to investigate the influence of the rake angle on the magnitude of the intrinsic specific energy and the inclination of the force acting on the cutting face of a Polycrystalline Diamond Compact (PDC) sharp cutter while tracing a groove on the surface of a rock sample. An extensive and comprehensive set of cutting experiments was performed on a wide range of quarry rock samples using a state of the art rock cutting equipment (Wombat). The results conform with the previous studies by other researchers; the intrinsic specific energy is in good agreement with the uni-axial compressive strength of the rock samples when the cutter is positioned at back rake angles between 5° to 20°. New results on a few rock samples were also obtained by performing novel experimental tests at very large rake angles (θ > 70°) as well as negative rake angles, showing that the intrinsic specific energy increases dramatically once the back rake angle exceeds 75°. Results also indicate that the decrease of the apparent interfacial friction angle with increasing back rake angle seems to follow a “universal trend” weakly dependent on the rock sample.
Showing items related by title, author, creator and subject.
Experimental investigation on the effect of wear flat inclination on the cutting response of a blunt tool in rock cuttingRostamsowlat, I.; Richard, T.; Evans, Brian (2018)A vast majority of experimental researches focuses on the cutting action of a sharp cutter, while there has been limited experimental work devoted to the study of the contact process at the wear flat-rock interface. The ...
Tectono-magmatic evolution of Late Jurassic to Early Cretaceous granitoids in the west central Lhasa subterrane, TibetCao, M.; Qin, K.; Li, G.; Li, J.; Zhao, J.; Evans, Noreen; Hollings, P. (2016)There is ongoing debate as to the subduction direction of the Bangong–Nujiang Ocean during the Mesozoic (northward, southward or bidirectional subduction). Arc-related intermediate to felsic intrusions could mark the ...
Pramanik, Alokesh; Rahman, M. (2012)Study on ultra-precision machining, where diamond cutting tools are used to achieve submicron tolerance and a nano-meter surface finish, has increased since the 1960s. Surfaces of the popular metals (copper and aluminium) ...