Arc gliding structure for aluminum alloy window

The invention discloses an arc gliding structure for an aluminum alloy window. The arc gliding structure comprises a first outer-form end plate, a first bottom plate, a first sliding plate, a first supporting plate, a second bottom plate, a second sliding plate, a second supporting plate, a third bottom plate, a first inner-form end plate, a second outer-form end plate, a first screw mounting post, a second screw mounting post, a second inner-form end plate, a reinforcing plate, a third outer-form end plate, and a third inner-form end plate. According to the invention, the gliding second outer-form end plate and second inner-form end plate employ the arc designs, so that the end surface has the good brilliance and the appearance is more beautiful; the tops of the first sliding plate and the second sliding plate are arranged at the same height and thus the track has a flat rail structure, so that the operator can install a piece of glass or a screen window on the gliding structure conveniently and quickly, so