Gantry Machining Center is made up of two columns, beams, saddle and other components. According to the gantry frame, it can be divided into fixed beam, moving beam and moving column gantry machining center. Fixed beam Gantry Milling Machine means the beam is fixed and worktable is moving. Moving beam gantry milling machine means beam moves up and down and table moves befor and after.Moving column gantry machining center refers to worktable is fixed while gantry frame is moving.