Abstract: A sliding device configured to perform a sliding process on a surface of an object to be slid includes a sliding part including sliding bodies each having a flat working surface; a first driving mechanism configured to regularly move the sliding bodies in parallel with the working surfaces of the sliding bodies; and a second driving mechanism configured to regularly move the sliding part in parallel with the working surfaces in a direction different from a moving direction by the first driving mechanism while the first driving mechanism moves the sliding bodies. This enables uniform supply of the sliding process material onto the surface of the object to be slid or clean the surface of the object to be slid.

Abstract: A method for supplying a sliding process material to or removing it from a surface of an object to be slid using a sliding part including a plurality of sliding bodies each having a flat working surface, the sliding part is regularly moved, preferably by a second driving mechanism, in parallel with the working surfaces of the sliding bodies and in a direction different from a moving direction of the sliding bodies while the sliding bodies are regularly moved, preferably by a first driving mechanism, in parallel with the working surfaces. This configuration uniformly supplies the sliding process material to the surface of the object to be slid.