characteristics have a
great influence on drilling performance. So, study
the influence of drilling kinematic parameters on
the load fluctuation characteristics of PDC bit becomes more and more important. Gas drainage drilling experiment table was
built and Gas
drainage drilling experiment was carried out under different feed speed, different
rotation speed and same drilling thickness with different feed speed and
rotation speed. The
results indicate that drilling
torque decreases with
the increase of rotation speed; vibration
amplitude of drilling torque increases with increase of rotation speed. Vibration amplitude of feed resistance
to about 240 r/min
and then increases. The value of 240
r/min is minimum. Feed resistance and drilling
torque increase with the increase of feeding speed. Vibration amplitude of
drilling torque and feeding resistance increases with the increase of feeding speed. Feed resistance and
drilling torque are almost equal
with the same drilling thickness; meanwhile, vibration amplitude of drilling torque and feed resistance
the increase of feeding speed. It provides a good basis for setting the
appropriate feeding speed
and rotation speed in actual work.
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