Circuit board grinding machine with dust removal function

The utility model relates to the technical field of circuit board production equipment, and discloses a circuit board grinding machine with a dust removal function. One or more circuit boards are stacked and placed on the base plate, the two sets of positioning assemblies push the positioning plates through the second air cylinders to clamp and fix the circuit boards differently and adjust the positions of the circuit boards, meanwhile, the two sets of grinding devices grind the edges of the circuit boards, the positioning assemblies are loosened after the edges of the two sides are ground, and the angle adjusting mechanism drives the circuit boards to rotate by 90 degrees. Therefore, the positioning assembly clamps again, the grinding device conducts grinding, the grinding position of the circuit board is rapidly adjusted, the multiple circuit board bodies are ground, operation is simple, the circuit board bodies are effectively prevented from inclining, the grinding efficiency is improved, and the grinding