A new precise displacement platform is made to perfect the capability of the displacement platform used in the correlative fields of mechanics nowadays
improve the displacement straightness
position accuracy and make it lower cost. The no-guide apparatus precise platform is developed for this purpose
and its development is based on the theories of parallelogram and proportional lever. It is not only to be proved to accord to the requirement above
but also easy to install and maintain
and it takes smaller space
which could be used in weightless condition. So it could be used in the field of spaceflight and the other precise displacement systems. Key words: no-guide apparatus; high precision; displacement platform; parallelogram; proportional lever drive structure