This machine is specially developed for finish machining thecylindrical gears, which are widely used in various industries. The machinecan efficiently grind the external gear and the internal gear for both straightand helical gears,granted the national patent for invention. The grindinghead is digitally pouered by the main spindle, to be balanced automatically.The grinding wheel profile is repaired by a diamond roller powered by themain spindle and the machining precision can reach level 5.