绘出定位、夹紧、导向及其它元件或装置的具体结构;最后绘制夹具体,形成一个夹具整体 When drawing the general drawing of jig, first draw the outline shape of the workpiece with the fine solid line;Then the workpiece is regarded as a transparent body, and the specific structure of positioning, clamping, guiding and other components or devices is drawn in sequence according to the shape and position of the workpiece.Finally, draw the clamp concrete, forming a fixture as a whole