The HG400C is an expanded machine tool based on the fundamental functions of the HG400. It achieves higher intelligence and rigidity, featuring high machining accuracy, high processing efficiency, and excellent precision retention. Additionally, it includes functions such as automatic wheel guard rotation, automatic tool setting, automatic doors, automatic wheel dressing, and automatic movement of the center. This machine tool employs the continuous generating grinding principle between the grinding wheel and the workpiece, utilizing eight-axis control with five-axis linkage to accomplish shaping and grinding functions.