我厂产品零件,有不少零件形状复杂,不规则(如图1),尺寸大小也不相同,铣削时,很不方便,零件质量不易保证,针对这种情况,我们设计制造了一种成组铣用夹具(图2)。一、结构分析夹具是采用铰链式多位夹紧机构,结构简单、使用方便、灵活可靠。 1.定位机构:零件以底盘7、挡铁1及螺栓8来完成定位。零件的端面A和底盘接触,根据端面A和B的高度差来调整螺栓8以限制两个定位自由度。挡铁1上面有V形槽用以定位,它可限制4个 I plant product parts, there are many parts of the complex shape, irregular (Figure 1), the size is not the same, milling, it is not convenient, parts quality is not easy to guarantee, in view of this situation, we designed and manufactured a Group milling fixture (Figure 2). First, the structural analysis The fixture is a hinge-type multi-bit clamping mechanism, the structure is simple, easy to use, flexible and reliable. 1. Positioning agencies: parts to the chassis 7, retaining iron 1 and bolts 8 to complete the positioning. The end face A of the part is in contact with the chassis, and the bolts 8 are adjusted according to the difference in height of the end faces A and B to limit the two positioning degrees of freedom. There is a V-shaped groove on the stopper iron 1 for positioning, which can limit 4 pieces