Pre-grooving is an effective means of facilitating hard-rock cutting with conical picks, reducing pick wear, and improving rock-cutting efficiency. However, research on the effects of matching cutting parameters with kerf parameters on rock-cutting performance remains limited. Using granite with a strength exceeding 13...
The design of cutter parameters plays a key role in the successful cutting of large-diameter reinforced concrete building piles by shield machines. However, the cutting mechanism of the shield machine in cutting rebar is not clear. Based on the shield pile cutting project of Wuhan Metro Line 12, the finite-discrete ele...
In the restorative machining of railway wheels, traditional approaches to the determination of cutting conditions based on averaged values of material strength and homogeneity are losing their reliability. This necessitates a transition from global empirical relationships to local, geometrically and physically adaptive...
The cutter with insert teeth is a critical tool for TBM rock-breaking and has been widely applied in transportation and mining tunnel construction. The arrangement of insert teeth is a key factor influencing rock-breaking performance and load characteristics. However, conventional large-insert designs suffer from stres...
This paper presents the results of a numerical simulation of coal cutting with a tangential rotary pick using the LS-DYNA software suite. The aim of the study was to evaluate the impact of the pick installation angle on the force parameters of the cutting process. The rock mass was represented by a deformable coal bloc...
To solve the challenge of mechanized excavation of power-transmission foundations and earthing trenches in hard rock mountainous areas, available studies on rock breaking by road-milling picks were critically reviewed. It was found that none of the existing investigations offer calculable relationships for determining...
We use cookies to run the site and, with your consent, for analytics and to show ads. See our Cookie Policy.
