Structural Design and Finite-Element Analysis of Three-Winged Auger Bit Applied to Nearly Horizontal Drilling in Soft Coalbeds

摘要

The choice of three-winged auger bit which completes with auger rod is important key in soft coal bed drilling. With the structure design philosophy of three-winged auger bit, Theoretical strength checking and three-dimensional design were carried out to bit. With ANSYS software finite-element analysis was did on bit. The stress distribution of the bit was obtained, which provides theoretical basis for further optimization design and improvement for three-winged auger bit.