在生产如图1所示零件时,兰州通用机器厂王文禄同志改进了一种工具(如图2),这种工具构造简单、使用轻便,不仅减轻了劳动强度,而且减少了辅助工时,提高了劳动生产率。操作时,把铁皮的一端装在轴4的凹槽内(轴4开1～2个槽,如图2AA 截面),根据槽的方向向左或向右转动滚子1,可以弯出如图1展开图所示的沟形。当两端弯好而一端尚在槽内 In the production of parts shown in Figure 1, Lanzhou General Machinery Factory Comrade Wang Wenlu improved a tool (Figure 2), this tool structure is simple, lightweight, not only reduce the labor intensity, and reduce the number of auxiliary work hours and improve Labor productivity. In operation, one end of the iron body is mounted in the groove of the shaft 4 (shaft 1 to 2 grooves, as shown in Fig. 2AA), and the roller 1 is rotated leftward or rightward according to the direction of the groove, Figure 1 expand the figure shows the groove. When both ends of the curve and one end is still in the tank