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Current mechanisms for drilling and milling fall short in creating holes beneath the surface without disrupting bulk portion of the material. Presently, the only way to drill underground is through tunnel boring machines - each of them weighing hundreds of tons and costing millions of dollars. Clearly, they can’t be used to drill small diameter holes. This paper produces a novel idea for making U-shaped holes and for drilling beneath the surface without any digging. This has wide range applications in fields of road and transport, wires and pipe installation, component manufacturing etc. and can be used for all the sub-surface drilling operations. The materials used for this purpose are HSS Steel, Carbide Steel, and Cobalt-alloy Steel. These materials are assigned to the body of the drill and FEM analysis is conducted to find the total deformation and the Von-Mises stresses induced in the drill body.

Design of a Sub-Surface Drilling Mechanism through Solid Modelling and Analysis