Method and device for manufacturing parameterized power assembly envelope model and storage medium
A technology of powertrain and manufacturing method, applied in geometric CAD and other directions, can solve the problems of relying on professional software and low efficiency, and achieve the effect of strong portability, high efficiency and good safety
Pending Publication Date: 2022-04-15
CHONGQING CHANGAN AUTOMOBILE CO LTD
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Problems solved by technology
[0006] The present invention aims at the above-mentioned problems existing in the prior art, and provides a fully parameterized and automatically updated powertrain layout envelope model making method, which solves the problems of low efficiency of independent research and development and / or dependence on professional software, etc.
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[0023] The implementation of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific examples.
[0024] First, establish a motion parameter table, obtain the (x, y, z) coordinates of the initial position of the powertrain, and collect the translational motion of the powertrain in the (x, y, z) direction relative to the initial position under different working conditions ( T x , T y , T z ), where T x is the amount of translational motion in the x direction, T y is the amount of translational motion in the y direction, Tz is the amount of translational motion in the z direction, and the Euler angle (R x , R y , R z ), where R x is the Euler angle in the x direction, R y is the Euler angle in the y direction, R z is the Euler angle in the z direction. Establish the DESIGN TABLE of the powertrain motion parameter table under different working conditions.
[0025] Powertrain envelope model construction, ...
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The invention discloses a full-parameterized automobile power assembly envelope model manufacturing method, and relates to the technical field of automobiles, the method comprises the following steps: obtaining a coordinate value of an initial position of a power assembly, establishing a motion parameter table of the power assembly under different working conditions, reading a storage position of the motion parameter table, and linking a document to the motion parameter table; the DESIGN TABLE is inserted into the DESIGN TABLE, a COMPONENT is inserted into the DESIGN TABLE, parameters in the DESIGN TABLE are read line by line until the last line, an INSTANCE of the COMPONENT is inserted into the INSTANCE, and an FIX constraint is newly established for the INSTANCE; related parameters under each working condition in the motion parameter table are converted into FIX constraint parameters, the FIX constraint parameters are linked with DESIGN TABLE respectively, and a document is stored in a motion parameter storage position. According to the method, a one-step positioning mode of coordinate transformation and the like is adopted, translation and rotation positioning of the power assembly is operated, and after changes are input, the envelope automatic updating efficiency is the highest.
Description
[0001] Technical Field: The present invention is used for the general layout of vehicle research and development, and more specifically relates to the production of layout envelope models for powertrains. Background technique [0002] With the development of the automobile industry, especially since entering the 21st century, with the fierce competition in the automobile market, the launch of new models has accelerated. In the process of automobile design, the general layout needs to make the envelope model of the powertrain and accessories. Because the powertrain and motion parameters are often changed in various stages of vehicle development, it is necessary to repeat the creation of the latest envelope many times. [0003] The envelope is made manually in a common 3D design software such as CATIA. Due to the many working conditions of the powertrain, there are problems such as low efficiency resulting in long time-consuming, many links that are prone to errors, and difficul...
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Inventor 陈德建陈寅李幸运
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD