Method for manufacturing kneading roller blades of aerospace fuel mixers
A fuel mixing and manufacturing method technology, which is applied in the field of blade processing, can solve the problems of long keyway, difficulty in guaranteeing, and failure of slotting processing equipment to achieve the effects of shortening the production cycle, ensuring product quality, and reducing production costs
Active Publication Date: 2011-04-27
XIAN XAE AERO SPACE GROUND EQUIP
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Problems solved by technology
[0005] In addition, the pinch roller paddle keyway itself has high precision, the keyway is relatively long, and the keyway profile must be parallel to the blade axis, which is difficult to ensure
General slotting processing equipment can not complete
Method used
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[0034] Such as figure 1 Shown, schematically shows the structure of a solid variable cross-section torsion blade in the pinch roller blade, figure 2 yes figure 1 right elevation;
[0035] The processing steps of the solid variable cross-section torsion blade with good manufacturability, low cost and high precision include:
[0036] 1) Surface processing of the solid variable section torsion blade 1;
[0037] a) According to the required design dimensions of the solid variable cross-section torsion blade, it is designed through computer-aided software;
[0038] b) Input the parameters designed by the computer-aided software into the digital processing equipment for processing;
[0039] c) Digital processing equipment processes and forms a set of profiles of solid variable-section torsion blades required for mass production;
[0040] d) According to the profile size of the solid variable cross-section torsion blade, process the wool casting with process bosses on both s...
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Abstract
The invention belongs to blade machining technology, and particularly provides a method for manufacturing kneading roller blades of aerospace fuel mixers. The method comprises the following: 1) a step of machining profiles of kneading roller blades, which is to a) design through computer-aided software according to the required design size of the kneading roller blades; b) input designed parameters of the computer-aided software into digital machining equipment for machining; c) allow the digital machining equipment to process and mold a group of kneading roller blade explorators produced in a required batch; d) machine rough castings having technological bosses on two sides according to the design size of the kneading roller blades; e) machine the rough castings through a group of kneading roller blade explorators, form the whole profiles of the kneading roller blades, allow the machining error of the whole profiles to be not more than 0.5 mm and prearrange 0.2 mm of margin for abrading and fine polishing; and f) perform mirror finishing on the curved surfaces of the blades, reach 0.2 to 0.8 mu m and allow the contact area of two blades after grinding to be more than 65 percent, wherein the light transmission rate of the blade profiles is required to be less than 0.2; and 2) a step of machining a blade keyway.
Description
technical field [0001] The invention belongs to the paddle processing technology, and is especially a manufacturing method for kneading roll paddles of aerospace fuel mixers. Background technique [0002] The kneading roller blades of the fuel mixer are a pair of special-shaped kneading rollers, and the manufacture of the pair of special-shaped kneading rollers involves the processing technology of non-equal cross-section twisted blades. [0003] The kneading roller paddle of the fuel mixer is composed of two parts: one is a solid variable-section torsion paddle, and the other is a hollow variable-section torsion paddle. During work, driven by a hydraulic motor, both blades rotate on their own, while the hollow blade revolves around the solid blade. Through the gap and space change between the two blades, the liquid and solid two-phase materials are stirred and kneaded. The most important thing is to ensure that there is absolutely no mechanical collision or friction betwe...
Claims
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IPC IPC(8): B23P15/02
Inventor 刘维成徐文库
Owner XIAN XAE AERO SPACE GROUND EQUIP