Metal plate edge thickening machine

Abstract

The invention relates to a metal plate edge thickening machine which is mainly applied to the technical field of producing and processing of cutter blanks. The metal plate edge thickening machine comprises a base (1), a metal plate forming mold (2), a clamping positioning device and a rolling device, wherein the rolling device is connected with the metal plate forming mold (2) through a piston connecting rod of a first hydraulic oil cylinder (3); the clamping positioning device comprises a fixed clamping block (4), a movable clamping block (5), a support pillar (6), a pressure bearing plate (7), a wedge block (8) and a second hydraulic oil cylinder (9); the metal plate forming mold (2) is arranged between the movable clamping block (5) and the fixed clamping block (4); the wedge block (8)is connected with a piston connecting rod of the second hydraulic oil cylinder (9); and a wedge point part is inserted between the pressure bearing plate (7) and a baffle (11), and transfers force to the movable clamping block (5) through the pressure bearing plate (7) and the support pillar (6). The metal plate edge thickening machine provided by the invention has the advantages of stable clamping force to a processed workpiece, high production automation degree, long service life, low energy consumption and no pollution and does not need heating.

Description

technical field [0001] The invention relates to a metal plate edge thickening machine. It is mainly used in the production process of cutting tool blanks and steel hoes, and can also be used in other machining technical fields that require thickening the edge of the metal plate. Background technique [0002] In order to improve labor production efficiency, the tool production industry has generally got rid of the traditional manual forging of steel billets, and instead adopts the direct mechanical shearing and forming process of steel plates. But in the existing mechanical shear forming process technology, the machining method of kitchen knife knife blank is: at first, select steel sheet hot-rolled coil as raw material and with straightening machine, hot-rolled coil is drawn into straight band, straight band is carried out with shearing machine Transverse shearing, cutting into straight blocks; punching the straight block with a punch to form a blank; secondly, heating the ...

AI Technical Summary

Problems solved by technology

[0003] The disadvantages of the existing technology are: hot forging is used for the back part of the knife, high energy consumption, heavy oil fume, and large pollution; and no matter whether heating forging or rolling operation is used, the clamping of the tool blank by the mold adopts spiral It is realized by two technical schemes of extrusion or hydraulic cylinder extrusion; the above operations are continuously subjected to huge forging or rolling impact force due to the blank workpiece; when the spiral extrusion technical scheme is adopted, the huge impact force acts on the thread It is easy to cause deformation and damage to the wire teeth; therefore, during on-site operations, it is necessary to constantly adjust the clamping gap or replace the screw rod, which affects the machining accuracy and production speed of the knife blank, and at the same time increases the production cost

For the hydraulic cylinder extrusion technology scheme, due to the "soft" characteristics of the hydraulic cylinder extrusion force, the clamping force of the mold clamping the tool body workpiece is unstable, which will eventually affect the machining accuracy of the tool blank, resulting in an increase in the scrap rate

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