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Method for designing and manufacturing cycloid rotor pump

The technology of a cycloid rotor pump and a manufacturing method, which is applied in the directions of rotary piston pumps, pumps, pump components, etc., can solve the problems of low processing precision, high processing precision and high efficiency, and achieves improved processing efficiency, increased strength, The effect of reducing manufacturing costs

Active Publication Date: 2015-04-08
JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, such as high processing accuracy requirements, high cost, and low efficiency, the present invention proposes a new manufacturing method of a cycloidal rotor pump with low processing accuracy requirements, low cost, and high efficiency.

Method used

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  • Method for designing and manufacturing cycloid rotor pump
  • Method for designing and manufacturing cycloid rotor pump
  • Method for designing and manufacturing cycloid rotor pump

Examples

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Embodiment Construction

[0038] In order to better illustrate the present invention, the cycloidal rotor pump of a certain product is taken as an example below to solve the problem. The internal and external rotor parameters of a cycloidal rotor pump are known, as shown in the table below:

[0039] parameter code

Z1

R

a

e

ρ1

ρ2

parameter value

6

28

10

3

21

15

[0040] Step 1: Find the meshing inflection point of the inner and outer rotors of the cycloidal rotor pump;

[0041] The rotor cycloid equation of the cycloid rotor pump is as follows:

[0042] x = R sin B - e sin ( Z 2 B ) - a [ R sin B - e Z ...

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Abstract

The invention relates to a method for designing and manufacturing a cycloid rotor pump and practical significance thereof in actual production. The method is successfully applied to the cycloid rotor pump in a certain aviation vehicle-mounted finished product, namely a hydraulic constant speed transmission device. The cycloid rotor pump provided by the invention is an internal engagement type cycloid rotor pump and is shown in the accompanying drawing. The meshed endpoint circle of the cycloid pump refers to a circle concentric to a restricted circle on an outer rotor, and the radius of the circle is smaller than that of the restricted circle. Accurate solution of the meshed endpoint circle has important guiding significance on production, and outside the meshed endpoint circle, because an inner rotor and the outer rotor are not meshed, the manufacturing precision can be properly reduced, and the manufacturing cost can be greatly saved. In addition, an arc angle is formed between a circular-arc fillet of the rotor outside the meshed endpoint circle and the restricted circle, the strength of the outer rotor can be greatly improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to a method for designing and manufacturing a cycloidal rotor pump, which belongs to the field of technical processing and manufacturing. Background technique [0002] There are many gear pumps used in aviation. According to the meshing form of the gears, they can be divided into external gear pumps and internal gear pumps; according to the tooth shape, they can be divided into involute gear pumps and cycloid gear pumps. . Compared with the gear pump, the cycloidal gear pump has the advantages of compact structure, small volume, large displacement, smooth movement, low noise and good high speed characteristics. The cycloidal rotor pump is a special tooth-shaped internal meshing gear. When the pump is working, the inner and outer rotors rotate around parallel axes in the same direction during the meshing process, and the speed of the two rotors is inversely proportional to the number of teeth. [0003] At present, the machining d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C2/10
CPCF04C2/084F04C2/102F04C2240/20
Inventor 贾菊英吴建宁张泽锋
Owner JINCHENG NANJING ELECTROMECHANICAL HYDRAULIC PRESSURE ENG RES CENT AVIATION IND OF CHINA
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