Universal milling fixture for diffuser blades

Abstract

The invention discloses a universal milling fixture for diffuser blades. The universal milling fixture comprises a disk-shaped base; a plurality of strip-shaped guide holes are uniformly formed in the base along the circumferential direction; an extension line of every guide hole passes through an axis line of the base; a guide rod which is perpendicular to the upper end surface of the base is arranged in every guide hole; the lower end of every guide rod is provided with a positioning head; the positioning head of every guide rod is matched with the lower end surface of the base to form positioning; the upper end of every guide rod serves as a threaded section which is in threaded matching with a positioning nut; a compression plate which is used for compressing the corresponding diffuser blade is arranged between every positioning nut and the base; the universal milling fixture also comprises two positioning bolts which are used for being inserted into positioning pin holes respectively to position a diffuser, wherein the positioning pin holes are formed in the base. According to the universal milling fixture for the diffuser blades, different sizes of diffusers can be clamped and accordingly the universality is high, the number of toolings required by the factory is reduced, the tooling management is convenient, the labor intensity of workers is reduced, the production and manufacturing period is shortened, and the production cost is reduced.

Description

technical field [0001] The invention relates to the field of diffusers, in particular to a universal milling fixture for diffuser blades. Background technique [0002] The diffuser is a key component in the diffuser system of the steam compressor, aeration blower, supercharger and other machines to increase the steam temperature and pressure by compressing the steam generated by the heat recovery system. The function is to pressurize and heat up the low-pressure or low-temperature steam to meet the temperature and pressure requirements required by the project, thus realizing the secondary expansion of the gas. After the gas is subjected to centrifugal force in the compressor impeller and the impeller diffuses to obtain pressure energy and velocity energy, it flows through the diffuser blades at high speed to convert part of the velocity energy into pressure energy, so as to achieve the required pressure. It can be seen that the diffuser plays a vital role in improving the e...

AI Technical Summary

Problems solved by technology

Due to the different power of the steam compressor, the gas flow through the blades of the diffuser is also different, resulting in different throat sizes of the diffuser, and thus different forms. Therefore, the dimensions of the diffuser of each model are different, and A set of tooling needs to be designed for each specification, which causes the following disadvantages in the milling fixture of traditional diffuser blades: 1. The redesign of tooling is cumbersome and repetitive work is intensive; 2. The production and manufacturing cycle is long, which greatly limits the production progress ; 3. The production cost of tooling is high; 4. The number of tooling is too large to be convenient for management

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