附图所示是装夹拉刀用的弹簧夹头,结构简单制造容易。夹具体1的尾部带有与拉床相配合的圆柱体和丝扣,它由背帽2紧固在拉床上。夹具体的头部开有60°的斜槽与爪块5配合,爪跟螺钉3相连。爪块借弹簧4的张力和挡销6的作用,使它在槽内作一定范围的移动。钢板7由螺钉8固定在主体上,以使爪块不致向横移出。 The drawing shows a collet for clamping a broach, which is simple and easy to manufacture. The tail end of the clamp body 1 is provided with a cylinder matched with the broaching machine and a threaded fastener which is fastened on the broaching machine by the back hat 2. The specific head of the clamp is provided with a 60 ° chute cooperating with the claw block 5 and the claw is connected with the screw 3. Claw block by the tension of the spring 4 and the role of the stopper 6, make it within a certain range of mobile tank. The steel plate 7 is fixed to the main body by the screw 8, so that the claw block can not be horizontally moved out.