Methods for forming blade double-faced cutting edge and metal plate double-faced straight edge

Abstract

The invention discloses a method for forming a blade double-faced cutting edge, comprising the following steps: (1) providing a metal plate, prepressing a first surface of the metal plate by utilizing a stamping die, forming a pressed line of a certain depth on the first surface of the metal plate, and forming a blade embryonic form at one side of the pressed line and a surplus material at the other side of the pressed line; and (2) pushing and cutting the surplus material at the part, close to the pressed line, of the blade embryonic form or in the pressed line of the first surface of the metal plate by utilizing the stamping die so as to form a blade finished product, and forming cutting edges on a first surface of the blade and a second surface, opposite to the first surface, of the blade at the same time. By adopting the method for forming the blade double-faced cutting edge, a blade with a double-faced cutting edge can be formed while no processing is required to be carried out on the pressed blade, the processing procedure is simple, the processing energy consumption is less, the cost is low, and the production efficiency is high. The invention also discloses a method for forming a metal plate double-faced straight edge.

Description

technical field [0001] The invention relates to the technical field of stamping processing, and more particularly relates to a method for forming double-sided cutting edges of blades and forming double-sided straight edges and corners of metal plate parts. Background technique [0002] In the existing technology, in order to obtain workpieces of required shape and size, stamping process is often used, using stamping die to apply external force to plates, strips, pipes and profiles, etc., to cause plastic deformation or separation, so as to obtain the desired shape and dimensions of the workpiece. Most of the products in life, such as car body panels, mailboxes, radiator fins, steam drums for boilers, container shells, iron core silicon steel sheets for motors and electrical appliances, etc. are stamped; instruments, household appliances, etc. There are also a large number of stamping parts in products such as automobiles, bicycles, office machinery, and household utensils. ...

AI Technical Summary

Problems solved by technology

use figure 1 The finished blade formed by the stamping method shown is as figure 2 As shown, the finished blade includes an upper surface 101, a lower surface 102 opposite to the upper surface, and a side surface 103 connecting the upper and lower surfaces. As can be seen from the figure, the lower surface 102 of the finished blade is in line with the The side surface 103 is formed as a knife edge, and the space between the upper surface 101 and the side surface 103 is not a knife edge, because the upper surface 101 that first contacts with the stamping die will follow the stamping force of the stamping die. The stamping die is bent towards the formed side surface 103, so that a slump 104 is formed between the upper surface 101 and the side surface 103, that is, the blade formed by the stamping method in the prior art can only ensure that one side is a cutting edge , the other side will form a slump angle 104, so it is necessary to use a grinding tool to perform a grinding step, not only the processing procedure is cumbersome, the energy consumption is high, and the production efficiency is low, but also the grinding step cannot completely eliminate the slump angle 104

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