It is one of the most commonly used blast machines. After the dust collection system, separator, hoist and blast wheels orderly start working, load workpiece onto a small turntable. The big turning plate with eight small turntables (8 stations) intermittently rotates step-by-step, one station each time. Workpiece is clamped on the small turntable, and the turntable positioned in two blast areas conducts fixed point rotation, so as to ensure uniform blasting of the workpiece.