shearing method of roll forming machine
In the cold roll forming machine, the shearing shape and the shearing precision are the important links of the production line, in order to satisfy a variety of product appearance and fixed-length precision, the shearing mode is different, and the cut-off mode is classified and discussed.
According to cut off the way: can be divided into band saw blade and cut off the way with cutting knife.
Cutting with saw blade by rotating saw blade or band saw to cut the product, because it is through the rotation or movement of the product cutting, the overall efficiency of the lower, slower, and higher costs.
With the cutting edge of the cutting method using a dynamic set knife, the use of the blade to move the formation of the edge of the product to shear, the method of high efficiency, speed, a large investment, a single use of low cost, in the cold roll forming machine has been widely used.
The cutting method with cutter is basically divided into three kinds of ways: one-blade cutter (flat cut), one-blade oblique cutter (wrong-cut) and two-edged cutter (blanking and cutting).
Flat cut is the traditional way to cut off the structure of a relatively simple cold bending molding products, the wrong cut is a more complex shape of the product to cut off the way, in the dynamic fixed knife cut out the shape of the product profile of the cavity , according to the shape of the product to determine the direction of the product cut, a product to cut off work, very suitable for complex plate type, due to the problem of its cutting principle, individual corner will appear tearing or collapse of the problem, when the customer's product quality can be tolerated, the way to use more, dynamic fixed knife cut off driving force is basically hydraulic. Pneumatic.
When the complex plate type can not guarantee the cut-off quality, the use of blanking cutting mode: cutting knife in and out of the two cutting knife in and out, using the edge of the knife on the product according to the plate type to cut off, because the product shape by the next side of the knife plate constraints fixed, in the shear deformation of the smallest product, shearing quality is also the best, but the use of the cutting method At the same time, shear stroke length, cutting time is long, some products to improve the utilization of materials, do not choose to use the cutting method.