A kind of pressure molding die of fan air inlet and manufacturing method

Abstract

The invention provides a pressure molding die for the air inlet of a fan and a manufacturing method thereof, and relates to the field of fan manufacturing. In this way, it is possible to avoid the asymmetry of the upper and lower arcs of the arc section of the air inlet caused by supporting one side of the workpiece alone, and the possibility of cold work hardening and uneven hardness of the material when processing larger sizes. This manufacturing method improves the manufacturing accuracy of the arc section of the air inlet, enables the molding line to meet the design requirements, effectively improves the performance and quality of the product, reduces the manufacturing cost of the arc section of the air inlet, and improves the production efficiency and efficiency of the part. its quality. The compression mold is used in conjunction with the molding method of the fan air inlet. The workpiece is supported by the upper mold and the lower mold to form the arc section of the air inlet. The same curvature of the upper mold arc and the lower mold arc is set to ensure that the air inlet arc section meets Model line requirements.

Description

technical field [0001] The invention belongs to the field of manufacturing an air inlet of a fan, and in particular relates to a molding die for an air inlet of a fan and a manufacturing method thereof. Background technique [0002] The air inlet is a key component of the fan, and its installation and coordination accuracy with the fan impeller will directly affect the operating parameters of the fan. [0003] Since the air inlet of the fan is mostly arc-shaped, when making the arc section of the tuyere, there are strict requirements on the arc line, and at the same time, there are relatively strict requirements on the diameter of the upper and lower ports. The traditional manufacturing process includes the overall blank processing molding and segmental pressing The final welding process. [0004] The former method has high manufacturing process cost, extremely low material utilization rate, and long manufacturing cycle; the latter is more suitable for large-diameter air in...

AI Technical Summary

Problems solved by technology

[0004] The former method has high manufacturing process cost, extremely low material utilization rate, and long manufacturing cycle; the latter is more suitable for large-diameter air inlet arcs, but for small-diameter, mass-produced small arcs. Not very applicable, because the steel plate used in the small arc section is usually thin, and it is easy to cause damage to the material during pressing and forming, and it is easy to cause large deformation during welding. It is difficult to meet the design requirements after shaping, and the accuracy is greatly improved. Reduced, which affects the performance and quality of the product

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