How To Eliminate Marks On Stainless Bending

How to eliminate the indentation of stainless steel bending machine die?


How do stainless steel bending machine die eliminate bending indentation? Generally speaking, how to eliminate the residual indentation and scratches of sheet metal products after bending, the common method is to use polyurethane gaskets, plastic under the mold, or anti-indentation film. Then we can choose the alternative way to improve the mould. Simply speaking, the R dimension of the diamond horn on both sides of the V-groove of the lower die is increased, so as to ensure the smooth bending of the upper die and greatly reduce friction, which can effectively solve the problem of bending indentation.


In addition, there is a new practical metal plate bending die, which is characterized by the upper part of the left and right slopes of the V-shaped groove in the lower die. According to the length direction of the lower die of the bending machine, the horizontal forming grooves are symmetrically opened in the lower die. The cross section of the forming groove is approximately circular strip, called mandrel. Its material can be bearing steel or cemented carbide, and the forming inserts are embedded in each forming groove. The cross section of the forming inserts is processed into a circle or a rectangle, and the forming inserts are embedded into the lower die. The local forming inserts are exposed to the notches of the forming groove, which are higher than the left and right slopes of the V-shaped groove. The die on the metal sheet bender is oriented to the left and right slopes. During the bending process, the bending surface of sheet metal will move smoothly along the exposed surface of the forming strip and gradually compress the deformation of the forming strip. The bending surface of sheet metal does not contact directly with the metal part of the lower die, so as to achieve the purpose of no indentation on the bending surface of sheet metal.


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