我厂生产的1293型细纱机加压部份,有一个吊住重锤的另件——小重锤钩,这个另件是用4公厘铁丝做的,要弯成一个椭圆形(见图1),以往我们是在手扳弯模上加工。模具形状见图2,心轴3的下端固定在老虎钳上,圆盘2籍手柄1能绕3旋转,滚輸6装在圆盘2上,心轴3上装定位肖5及与另件尺寸相同的(即φ1S)滾轮4。此外,在圆盘2上再装一定位铁7。工件8放入模具后,搬动手柄1卽可弯出R9的半圆来(工序见图3)。用这个模具扳弯,劳动强度高,生产率又低,每班产量只有3000只左右,质量也不好。在党的手工机械化的号召下,著名的应忠发小組的工人们经过反复试验,改进了一付快速卷圆冲模(见图4),冲头1的形状与工件相同, I plant the production of 1293-type spinning machine pressurized parts, there is a piece of heavy lifting the weight of the other pieces - a small hammer hook, this piece is made of 4 mm wire, to be bent into an oval (see Figure 1), In the past we are working on the bending mold. The shape of the mold is shown in Fig. 2, the lower end of the mandrel 3 is fixed on the vise, the handle 2 of the disc 2 can rotate around 3, the roller 6 can be mounted on the disc 2, the spindle 3 can be positioned on the shank 5 and the same size (Ie φ1S) roller 4. In addition, a repositioning iron 7 is reloaded on the disc 2. After the workpiece 8 is put into the mold, the handle 1 搬 can be bent out of the semicircle of R9 (process shown in Figure 3). Curved with this mold, high labor intensity, low productivity, the output of only about 3000 classes per class, the quality is not good. Under the call of the party’s hand mechanization, the famous workers of Zhong Fa Fa Group tried repeatedly to improve a pair of rapid coiling dies (see Figure 4). The shape of the punch 1 was the same as that of the workpiece,