Lower friction of a slide guide-way under
low sliding velocity condition is essential to improve the
accuracy of machine tools. To fulfill this requirement,
PTFE based composite material is used in combination
with special lubricant for a slide guide-way. However,
why lower friction is developed in this combination is
poorly-understood. In this study, friction mechanism
under low pressure sliding contact using the PTFE based
composite material is experimentally investigated by
changing materials and performing sliding friction test.
As a result, it was found that contacting condition of
copper particle make influences on maintaining velocity
dependency under boundary lubrication condition.