我厂生产的螺旋分级机每台有螺旋叶片100片左右,下料法是采用划线气割法。铆焊车间工人,在下料的实际工作中,发现按原图纸的几何形状及尺寸下料,既浪费工时,又增加了材料的消耗。经工人、干部和技术人员一起研究讨论后,决定进行修改。改革前的下料方法如图1,即叶片的内外圆弧为不同半径的同心圆。这样每一叶片都要对内外圆弧进行切割,两叶片中间部份废掉了。 I plant a spiral classifier spiral blades each have about 100, cutting method is the use of crossed gas cutting law. Rivet welding shop workers, in the actual work of the material, found that the original drawings according to the geometry and size of the material, not only a waste of working hours, but also increased the consumption of materials. After the workers, cadres and technicians studied the discussions, they decided to make changes. Before the reform of the cutting method shown in Figure 1, the blade of the arc for different concentric circles. So that each blade should be cut on both inside and outside the arc, the middle part of the two leaves was scrapped.