夹具描述：夹具采用零件中心孔定位、侧面凸轴限角向、上下端面夹紧加工正面凸台及各孔。 Fixture description: The fixture adopts the center hole positioning of the parts, the side convex shaft is limited to the Angle, and the upper and lower end face clamping processing the front convex table and the holes.