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This machine is composed of a hopper, an oscillation chamber, a coupling, and a motor. The oscillation chamber consists of eccentric wheels, rubber software, main shafts, bearings, etc. The adjustable eccentric weight is driven by a motor to reach the centerline of the main shaft, generating centrifugal force in an unbalanced state, causing changes in material strength and forming track vortices inside the screen. The amplitude of the heavy hammer adjuster can be adjusted according to different materials and screens. The entire machine has a compact structure, small size, no dust, low noise, high quality, low energy consumption, and convenient mobile maintenance.