Computer simulation of bottomhole trajectory of a spherical single cone bit

The single roller bit is an important tool for small bore drilling and high hard rock drilling. The bottomhole track of a single cone bit is the cutting mark left by a single cone bit in the bottomhole rock during the drilling process. In the past, the bit bottom hole trajectory was obtained mainly through bit bench test, which took a long time and cost was high. This paper simulates the bottom hole trajectory of single roller bit by computer simulation, and analyzes the influence of bit structure parameters on the formation of bottom hole trajectory. It provides guidance for structural design and mechanism optimization of single cone bit.