The vertical shaft impact crusher, using the working principle of many kinds of sand making machine, according to the information feedback about usage situation and combined with its advantages, is designed as a new type of efficient sand making machine for fine crushing and shaping . Its typical use lies in adapting to the current artificial machine-made sand industry. It is an alternative product of bar grinding sand making machine and straight-through sand making machine. After optimizing the design of the deep-cavity rotor of sand making machine, the material throughput is increased by about 30%. And the head can be turned up and down when surrounding guard board is worn out, which helps improve raw material utilization rate and increase service life by more than 48%. The combined hammer head is also a great design, because users can just replace the worn part of the hammer head when t occurs damage.