CN111476889A - Seed part construction method for three-dimensional model assembly design - Google Patents
Seed part construction method for three-dimensional model assembly design Download PDFInfo
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- CN111476889A CN111476889A CN202010283105.8A CN202010283105A CN111476889A CN 111476889 A CN111476889 A CN 111476889A CN 202010283105 A CN202010283105 A CN 202010283105A CN 111476889 A CN111476889 A CN 111476889A
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- 238000010276 construction Methods 0.000 title claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000011089 mechanical engineering Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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Abstract
The invention discloses a seed part construction method for three-dimensional model assembly design, which comprises the following steps: carrying out parametric modeling on the seed part, and determining parameters required for driving a three-dimensional model of the seed part; drawing a three-dimensional model of the seed part, ensuring that parameters used in the drawing process are all from a parameter table and establishing association with the parameters in the parameter table; establishing a local coordinate system at all positions where the part is possibly connected (assembled) with other parts, and ensuring the dependency relationship between the coordinate system and the geometry; a cutting tool for a seed part is designed. The method has the advantages that the parameterized driving of the seed parts based on the CAD platform, the connection (assembly) with other parts during assembly design and the assembly cutting based on the Boolean operation can be realized.
Description
Technical Field
The invention relates to the technical field of three-dimensional model assembly design in mechanical engineering, in particular to a seed part construction method for three-dimensional model assembly design.
Background
The complex three-dimensional model in mechanical engineering has great requirements on the assembly design workload, and particularly, each component part of an assembly body needs to be manually designed according to the design parameters of the three-dimensional model, so that the design efficiency is low, the error rate is high, a large amount of talents need to be invested, and human resources are wasted.
Disclosure of Invention
The invention aims to provide a seed part construction method for three-dimensional model assembly design, which has high design efficiency, high accuracy and low maintenance cost.
The technical scheme adopted by the invention for solving the technical problems is as follows: a seed part construction method for three-dimensional model assembly design comprises the following steps:
firstly, carrying out parametric modeling on a seed part, and determining parameters required by driving a three-dimensional model of the seed part;
drawing a three-dimensional model of the seed part, ensuring that parameters used in the drawing process are all from a parameter table and establishing association with the parameters in the parameter table;
step three, establishing a local coordinate system at all positions where the part is possibly connected (assembled) with other parts, and ensuring the dependence relationship between the coordinate system and the geometry;
and step four, designing a cutting tool of the seed part.
And step one, the parameters need to create a parameter table in the seed part document for storage, and the parameters in the parameter table can be called in the document.
The parameters in the second step include, but are not limited to, sketch size, stretching length, rotation angle, etc. the purpose of the association is to make the change of the parameters in the parameter table drive the three-dimensional model to change.
And thirdly, the dependency relationship between the coordinate system and the geometry means that when the size of the three-dimensional model changes, the relative position between the local coordinate system and the three-dimensional model is unchanged.
And step four, drawing the three-dimensional model by the cutting tool in a parametric modeling mode, wherein parameters in the drawing process are from the parameter table in the step one, and the three-dimensional model of the seed part and the three-dimensional model of the cutting tool are ensured to be changed synchronously when the parameters are changed.
The invention has the beneficial effects that: by associating the seed part with the parameter table, the shape of the seed part can be changed by modifying the parameter values in the parameter table, so that the parameterized driving of the seed part based on the CAD platform is realized; the connection (assembly) between the seed part and other parts is realized during assembly by setting the coordinate system position of the seed part; the cutting tool for the seed part is designed to realize assembly cutting based on Boolean operation possibly existing with other parts during assembly.
Drawings
FIG. 1 is a flow chart of the steps of the seed part construction method of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The concrete steps of the seed part construction method are described by taking a pipe orifice as an example in the embodiment as follows:
carrying out parametric modeling on a pipe orifice part, and determining parameters required by a three-dimensional model of the pipe orifice part;
drawing a three-dimensional model of the pipe orifice part, ensuring that parameters used in the drawing process are all from a parameter table and establishing association with the parameters in the parameter table;
establishing a local coordinate system at all positions where the pipe orifice part is possibly connected (assembled) with other parts, and ensuring the dependence relationship between the coordinate system and the geometry;
and step four, designing a cutting tool of the pipe orifice part.
In the above embodiment, the three-dimensional design software may use three-dimensional modeling software commonly used in the mechanical industry.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (5)
1. A seed part construction method for three-dimensional model assembly design is characterized by comprising the following steps:
(1) carrying out parametric modeling on the seed part, and determining parameters required by driving a three-dimensional model of the seed part;
(2) drawing a three-dimensional model of the seed part, ensuring that parameters used in the drawing process are all from a parameter table and establishing association with the parameters in the parameter table;
(3) establishing a local coordinate system at all positions where the part is possibly connected (assembled) with other parts, and ensuring the dependency relationship between the coordinate system and the geometry;
(4) and designing a cutting tool of the seed part.
2. The method of claim 1, wherein the parameters required for parametric modeling of the seed part are stored by creating a parameter table in the seed part document, and the parameters in the parameter table can be called in the document.
3. The method of claim 1, wherein the parameters used in the seed part drawing process include, but are not limited to, sketch dimensions, stretching length, and rotation angle, and the correlation is established such that a change in the parameters in the parameter table can drive a change in the three-dimensional model.
4. The method of claim 1, wherein the dependency of the coordinate system on the geometry is such that the relative position between the local coordinate system and the three-dimensional model is not changed when the three-dimensional model changes in size.
5. The method of claim 1, wherein the cutting tool also adopts a parametric modeling mode to draw the three-dimensional model, parameters in the drawing process are also from the parameter table in the step one, and the three-dimensional model of the seed part and the three-dimensional model of the cutting tool are ensured to be changed synchronously when the parameters are changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283105.8A CN111476889A (en) | 2020-04-13 | 2020-04-13 | Seed part construction method for three-dimensional model assembly design |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010283105.8A CN111476889A (en) | 2020-04-13 | 2020-04-13 | Seed part construction method for three-dimensional model assembly design |
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| Publication Number | Publication Date |
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| CN111476889A true CN111476889A (en) | 2020-07-31 |
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| CN202010283105.8A Pending CN111476889A (en) | 2020-04-13 | 2020-04-13 | Seed part construction method for three-dimensional model assembly design |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115205471A (en) * | 2022-09-13 | 2022-10-18 | 青岛艾德软件有限公司 | Labeling method and system suitable for automatic drawing of assembly modeling |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108830001A (en) * | 2018-06-26 | 2018-11-16 | 中国直升机设计研究所 | A kind of helicopter cockpit flexible loading method |
| JP2018202097A (en) * | 2017-06-09 | 2018-12-27 | 株式会社カプコン | Game program and game device |
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2020
- 2020-04-13 CN CN202010283105.8A patent/CN111476889A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018202097A (en) * | 2017-06-09 | 2018-12-27 | 株式会社カプコン | Game program and game device |
| CN108830001A (en) * | 2018-06-26 | 2018-11-16 | 中国直升机设计研究所 | A kind of helicopter cockpit flexible loading method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115205471A (en) * | 2022-09-13 | 2022-10-18 | 青岛艾德软件有限公司 | Labeling method and system suitable for automatic drawing of assembly modeling |
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