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Engine water pump impeller modeling method

A technology of water pump impeller and modeling method, which is applied in the direction of engine components, engine cooling, machine/engine, etc., and can solve problems such as inability to modify parameters and low development efficiency

Pending Publication Date: 2022-03-25
JIANGLING MOTORS
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Problems solved by technology

[0002] The 3D model of the water pump impeller of the existing engine is almost obtained from the reverse of the physical model. When a new engine is equipped with a new cooling system, it needs to be modified and reversed many times to obtain the ideal 3D digital model, and the development efficiency is low;
[0003] The 3D model obtained by reverse engineering faces the embarrassing situation that it cannot be modified parametrically when it needs secondary development and optimized design

Method used

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  • Engine water pump impeller modeling method
  • Engine water pump impeller modeling method
  • Engine water pump impeller modeling method

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Embodiment Construction

[0044] Such as figure 1 As shown, the engine water pump impeller modeling method of the present invention is designed to solve the problem that the existing three-dimensional model of the engine water pump impeller is almost obtained from the reverse of the physical model.

[0045] Specific steps are as follows:

[0046] 1.CATIA modeling environment setting

[0047] Tool Options General;

[0048] Parameters and measurements: parameter tree view, check with value and with formula;

[0049] Part basic structure: display all in the structure tree;

[0050] 2. Formula and rule definition

[0051] Use f(x) and fog in knowledge engineering to define the parameters of the involute and the rules of the curve;

[0052] Define impeller parameter library: r, n, θ, a

[0053] (where r is the base circle of the involute; n is the number of involute coils, 1 is enough; θ is the starting angle of the involute; a is the radian value of the starting angle; PI is the constant π; 0<=t<1 )...

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Abstract

The invention relates to an engine water pump impeller modeling method. Belongs to the technical field of computer-aided design. The method comprises the following steps: step 1, setting a CATIA modeling environment; 2, defining a formula and a rule; step 3, generating an XZ plane involute and a YZ plane involute, and fitting a space involute; 4, projecting the space involute to an XY plane and changing the position, stretching to generate an impeller central surface ridge line, and defining basic contour parameters to generate a preliminary impeller contour range; 5, defining and generating a cutting contour envelope, and cutting the impeller contour to obtain a preliminary impeller contour model; and step 6, obtaining a parameterized design impeller model through the array. According to the method, the water pump impeller model can be parameterized, rapidly and accurately established.

Description

technical field [0001] The invention relates to a modeling method of an engine water pump impeller. It belongs to the technical field of computer-aided design. Background technique [0002] The 3D model of the water pump impeller of the existing engine is almost obtained from the reverse of the physical model. When a new engine is equipped with a new cooling system, it needs to be modified and reversed many times to obtain the ideal 3D digital model, and the development efficiency is low; [0003] The 3D model obtained by reverse engineering faces the embarrassing situation that it cannot be modified parametrically when it needs secondary development and optimized design. Contents of the invention [0004] The technical problem to be solved by the invention is to provide a modeling method for forward and parameterized design of the engine water pump impeller model in CATIA. It can solve the problem of establishing the impeller model with parametric design according to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/17G06F30/20F01P5/10F04D29/18
CPCG06F30/17G06F30/20F01P5/10F04D29/18
Inventor 唐勇
Owner JIANGLING MOTORS
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