Screw blade meshing forming method and forming device

Abstract

The invention relates to a screw blade meshing forming method and a forming device and belongs to the technical field of pressure working. According to the screw blade meshing forming method and the forming device, screw compound motion is formed by rotational motion of screw blade meshing forming parts and longitudinal feed motion of raw material steel belts, meshing of the raw material steel belts and the forming parts is achieved under the effect of the screw compound motion, and the raw material steel belts are formed into screw blades in certain sizes in a one-shot mode. Practice proves that screw blade finished products can be obtained in the one-shot mode with steel belts as raw materials by adopting a meshing forming method of the screw blades, stock utilization can reach 100%, the blades are even in thickness, errors are smaller than or equal to 0.10mm, screw pitch errors of the screw blades are smaller than or equal to 0.5%, production efficiency is high, quality is stable, labor intensity is low, and therefore the screw blade meshing forming method and the forming device are suitable for specialized production in a small-medium scale.

Description

technical field [0001] The invention relates to a spiral blade forming method and special forming equipment. It belongs to the technical field of pressure processing. Background technique [0002] In many grain mechanical equipment and material conveying mechanical equipment, such as screw conveyors, wheat turning machines, and horizontal screw unloaders, screw blades are widely used as important working parts. At present, there are mainly the following types of spiral blade forming methods: [0003] (1) Helical single-blade compression molding [0004] Use a press to press the blank as a whole into a single spiral blade, and then weld several single blades to form a certain length of spiral blade. The disadvantages of this method are: ①The blank preparation period is long and the material utilization rate is low. First cut a certain diameter disc from the steel plate, then punch a round hole in the center of the disc to form a ring, and then cut a V-shaped opening flang...

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: ①The blank preparation period is long and the material utilization rate is low

The disadvantages are: ① Forming requires two processes, winding process and stretching process

The winding process is prone to uneven blade thickness, with thin outer edges and thicker inner edges

During the plastic deformation of the materials in the two processes, the internal stress of the finished spiral blade will increase, and the product will be warped and deformed; ②The manufacturing precision is low, and the pitch error of the spiral blade is ≤6%

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