The difference between punching and blanking
First, the concept is different
1. The required material is separated from the plate base material by the press, which is generally called blanking. Various methods (press, shears, saws, flame cutting, plasma cutting, laser cutting, etc.) to separate the material from the base material are called blanking.
2, punching, refers to to adapt to different needs, specific are: eight hole, six square hole, punching plate, long hole, square hole, round hole, punching plate net, triangle hole and so on.
Second, the purpose is different
1, punching is in the board material out of the hole, in order to obtain the parts with holes punching is waste.
2, blanking is to obtain a certain shape and size of the blanking parts, washed out part is the finished product, the remaining part is residual material or waste.
Third, the application is different
1. Blanking
It is used for blanking the workpiece requiring further processing, or directly punching out the workpiece, such as flat tool plate head.
2, punching
Compared with plate punching, although from the deformation properties, deformation characteristics, there are many similarities, but because the pipe is hollow cylindrical blank, punching convex and concave die contact wall is a lone surface rather than a plane like plate, so it is necessary to take special technological measures and mold structure form.
