Abstract
Abstract:
An experimental study is performed in this paper to
verify the concept of thermal management of using a heat pipe
in the drilling process. The basic idea is to insert a heat pipe at
the center of the drill tool with the evaporator located close to
the drill tip, and condenser located at the end of the drill. In this
way, heat accumulated in the drill tip can be transported to the
remote section of the drill and remove it there to the tool holder,
which attaches the drill. Temperatures at the drill tip as well as
tool wear can be reduced significantly. In this paper,
experimental investigations on a heat pipe drill for various heat
flux inputs, inclination angles and rotating speeds are
presented. The effect of contact resistance and tool holder
(acting as heat sink) on heat pipe performance will also be
demonstrated. The results presented in this paper may be used
for important design and practical implementation
considerations