JP2002063222A - Method for reducing weight of three-dimensional cad data and three-dimensional cad system - Google Patents

Method for reducing weight of three-dimensional cad data and three-dimensional cad system

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Publication number
JP2002063222A
JP2002063222A JP2000246237A JP2000246237A JP2002063222A JP 2002063222 A JP2002063222 A JP 2002063222A JP 2000246237 A JP2000246237 A JP 2000246237A JP 2000246237 A JP2000246237 A JP 2000246237A JP 2002063222 A JP2002063222 A JP 2002063222A
Authority
JP
Japan
Prior art keywords
dimensional
data
texture
dimensional data
dimensional cad
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2000246237A
Other languages
Japanese (ja)
Inventor
Naoki Ishida
直樹 石田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Engineering Ltd
Original Assignee
NEC Engineering Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Engineering Ltd filed Critical NEC Engineering Ltd
Priority to JP2000246237A priority Critical patent/JP2002063222A/en
Publication of JP2002063222A publication Critical patent/JP2002063222A/en
Pending legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To provide three-dimensional(3D) CAD method and system capable of avoiding increase of data volume and deterioration of responses caused by handling a simple hole shape such as a heat discharge hole as 3D data. SOLUTION: The 3D CAD system is constituted of a 3D plotting means 100, a two-dimensional(2D) plotting means 110, a texture plotting means 120, a picture plotting means 130, and an operation means 140. A simple hole shape 210 on a plane element 201 of a 3D shape 200 is recognized as 2D data and texture prepared from the 2D data.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は3次元CAD(Comp
uter Aided Design)データ軽量化方法および3次元
CADシステム、特に3次元CADシステムにおいて取
り扱うデータ量を低減して、3次元CADシステムの必
要メモリ容量を減少させ且つ高速動作を可能にするCA
Dシステムに関する。
The present invention relates to a three-dimensional CAD (Comp
uter Aided Design) A method of reducing data weight and a three-dimensional CAD system, in particular, a CA that reduces the amount of data handled in a three-dimensional CAD system, reduces the required memory capacity of the three-dimensional CAD system, and enables high-speed operation
Regarding the D system.

【0002】[0002]

【従来の技術】最近の機構および電子回路設計等では、
CADシステムを多用している。特に、機構部品、プラ
スチックモールド品又は金型設計等においては、3次元
CADシステムを使用することにより、作業の高速化が
実現可能である。従って、最近の設計の殆ど全ては、C
ADシステム、更に具体的には3次元CADシステムを
使用して行なわれている。
2. Description of the Related Art In recent mechanisms and electronic circuit designs,
He frequently uses CAD systems. In particular, in the case of a mechanical component, a plastic molded product, a mold design, or the like, the use of a three-dimensional CAD system can realize high-speed operation. Thus, almost all modern designs have C
This is performed using an AD system, more specifically, a three-dimensional CAD system.

【0003】CADシステムに関する従来技術は、例え
ば特開平11−19137号公報の「記録媒体および画
像処理装置」および特開2000−57380号公報の
「画像処理装置および画像処理方法並びに記録媒体」等
に開示されている。
Conventional techniques relating to CAD systems include, for example, “Recording Medium and Image Processing Apparatus” in JP-A-11-19137 and “Image Processing Apparatus, Image Processing Method and Recording Medium” in JP-A-2000-57380. It has been disclosed.

【0004】従来の3次元CADシステムは、全ての形
状データを実データとして取り扱う。これまでの3次元
CADシステムは、2次元CADでは表現困難な複雑な
形状を作成させることに主眼がおかれてきた。しかしな
がら、3次元CADシステムの利用範囲が広がると共に
単純形状の製品作成にも多く利用されるようになってき
ている。
The conventional three-dimensional CAD system handles all shape data as real data. Conventional three-dimensional CAD systems have focused on creating complex shapes that are difficult to express with two-dimensional CAD. However, as the range of use of the three-dimensional CAD system has been expanded, it is increasingly used for producing products of simple shapes.

【0005】[0005]

【発明が解決しようとする課題】穴形状の如く単純形状
の場合には、他部品との関係がなく、単に放熱や軽量化
又はデザイン上の目的のために設けられる穴が多く存在
する場合が多い。これらの穴等が多く存在するとき、従
来技術の如く、これらの全てを3次元化すると、そのデ
ータ量が膨大になり、3次元CADシステムのレスポン
スが低下するという課題があった。
In the case of a simple shape such as a hole shape, there is a case where there are many holes provided merely for heat radiation, weight reduction, or design purpose without relation to other parts. Many. When many of these holes and the like exist, if all of them are made three-dimensional as in the related art, there is a problem that the data amount becomes enormous and the response of the three-dimensional CAD system is reduced.

【0006】[0006]

【発明の目的】従って、本発明は、従来技術の上述した
課題に鑑みなされたものであり、多数の単純形状を取り
扱う場合に、データ量を低減すると共にレスポンスの低
下を効果的に回避する3次元CADデータ軽量化方法お
よび3次元CADシステムを提供することである。
SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above-mentioned problems of the prior art, and when dealing with a large number of simple shapes, reduces the amount of data and effectively avoids a decrease in response. An object of the present invention is to provide a three-dimensional CAD data reduction method and a three-dimensional CAD system.

【0007】[0007]

【課題を解決するための手段】本発明の3次元CADデ
ータ軽量化方法は、高さ、幅および奥行き方向の3次元
データを使用する形状データによる3次元CADシステ
ムにおいて、3次元データの単純形状部分を2次元デー
タと、この2次元データから作成されるテクスチャとし
て認識する。本発明の好適実施形態によると、3次元デ
ータ出力時に、2次元データと3次元データの奥行き方
向のパラメータから3次元データを作成する。また、単
純形状部分として、平面要素の複数の単純穴形状とす
る。
According to the present invention, there is provided a method for reducing the weight of three-dimensional CAD data in a three-dimensional CAD system using shape data using three-dimensional data in height, width and depth. The part is recognized as two-dimensional data and a texture created from the two-dimensional data. According to the preferred embodiment of the present invention, at the time of outputting three-dimensional data, three-dimensional data is created from parameters in the depth direction of the two-dimensional data and the three-dimensional data. Further, a plurality of simple hole shapes of the plane element are used as the simple shape portions.

【0008】また、本発明の3次元CADシステムは、
3次元データを作成する3次元作図手段と、3次元デー
タ上の平面要素に対し2次元データを作図する2次元作
図手段と、2次元データから閉曲線を単純穴形状として
認識してテクスチャデータを作成するテクスチャ作図手
段とを備える。本発明の好適実施形態では、3次元デー
タの平面要素上にテクスチャデータを合成する画面描画
手段を備える。また、2次元データと3次元要素の奥行
き方向データから単純穴形状を3次元データ化する演算
手段を備える。
Further, the three-dimensional CAD system of the present invention
Three-dimensional drawing means for creating three-dimensional data, two-dimensional drawing means for creating two-dimensional data for plane elements on the three-dimensional data, and texture data creation by recognizing a closed curve as a simple hole shape from the two-dimensional data Texture drawing means for performing In a preferred embodiment of the present invention, there is provided a screen drawing means for synthesizing texture data on a plane element of three-dimensional data. Further, there is provided an arithmetic unit for converting a simple hole shape into three-dimensional data from two-dimensional data and three-dimensional element depth direction data.

【0009】[0009]

【発明の実施の形態】以下、本発明による3次元CAD
データ軽量化方法および3次元CADシステムの好適実
施形態を、添付図を参照して詳細に説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a three-dimensional CAD according to the present invention will be described.
Preferred embodiments of the data lightening method and the three-dimensional CAD system will be described in detail with reference to the accompanying drawings.

【0010】図1は、本発明による3次元CADデータ
軽量化方法および3次元CADシステムの好適実施形態
を示す。また、図2は、本発明の3次元CADシステム
を適用する設計例を示す。図1に示す3次元CADシス
テムは、3次元作図機能(又は手段)100、2次元作
図機能(又は手段)110、テクスチャ作図機能(又は
手段)120、画面描画機能(又は手段)130、演算
機能(又は手段)140および3次元データ150によ
り構成される。
FIG. 1 shows a preferred embodiment of a three-dimensional CAD data reduction method and a three-dimensional CAD system according to the present invention. FIG. 2 shows a design example to which the three-dimensional CAD system of the present invention is applied. The three-dimensional CAD system shown in FIG. 1 has a three-dimensional drawing function (or means) 100, a two-dimensional drawing function (or means) 110, a texture drawing function (or means) 120, a screen drawing function (or means) 130, and an arithmetic function (Or means) 140 and three-dimensional data 150.

【0011】本発明の大きな特徴は、3次元作図機能1
00を有することおよびその3次元作図機能100によ
って作成された3次元データの平面要素に対する2次元
作図機能110も有することである。更に、2次元作図
機能110によって作成された2次元作図データからテ
クスチャを作成するテクスチャ作成機能120も有する
ことである。
A major feature of the present invention is a three-dimensional drawing function 1
00 and the two-dimensional drawing function 110 for the plane element of the three-dimensional data created by the three-dimensional drawing function 100. Further, a texture creating function 120 for creating a texture from the two-dimensional drawing data created by the two-dimensional drawing function 110 is provided.

【0012】このテクスチャ作成機能120によって作
成されたデータを画面描画機能130によって、3次元
データの平面要素201の上に合成する機能を有する。
平面要素201上に作図された要素が単純穴形状210
である場合には、その単純穴形状210を3次元データ
化するのではなく、2次元データからテクスチャデータ
220を作成して画面描画機能130により、オペレー
タに対し、平面要素201上の単純穴形状210を認識
させる。
A function of synthesizing data created by the texture creation function 120 on a plane element 201 of three-dimensional data by a screen drawing function 130 is provided.
The element drawn on the plane element 201 is a simple hole shape 210
In this case, the simple hole shape 210 is not converted into three-dimensional data, but the texture data 220 is created from the two-dimensional data, and the screen drawing function 130 informs the operator of the simple hole shape on the plane element 201. 210 is recognized.

【0013】このようにして、3次元データ作成作業中
の単純穴形状210は、3次元データとしてデータを持
つのではなく、平面要素201上に作成された2次元デ
ータとその2次元データから作成されるテクスチャデー
タ220として認識し、作業中のデータ量の削減を可能
にする。また、最終的な3次元データ作成時には、平面
要素201から平面要素201の厚み方向データと2次
元作図データから作成される3次元データとの差をとる
機能を有する演算機能140により、3次元データ15
0を出力する。このようにして、平面要素201に対し
作成された2次元作図をテクスチャデータに変換して、
3次元データ上に合成し、データ量の削減を可能にす
る。
As described above, the simple hole shape 210 during the three-dimensional data creation operation does not have the data as the three-dimensional data but the two-dimensional data created on the plane element 201 and the two-dimensional data. It is recognized as the texture data 220 to be processed, and the amount of data during work can be reduced. At the time of final three-dimensional data creation, the arithmetic function 140 having a function of taking a difference between the thickness direction data of the two-dimensional drawing data and the thickness direction data of the two-dimensional drawing data from the two-dimensional element 201 is used. Fifteen
Outputs 0. In this way, the two-dimensional drawing created for the plane element 201 is converted into texture data,
Combining on three-dimensional data enables reduction of data amount.

【0014】図1および図2を参照すると、本発明の3
次元CADデータ軽量化方法および3次元CADシステ
ムの好適実施形態は、3次元作図機能100、2次元作
図機能110、テクスチャ作図機能120、画面描画機
能130および演算機能140とから構成される。
Referring to FIG. 1 and FIG.
A preferred embodiment of the three-dimensional CAD data reduction method and three-dimensional CAD system includes a three-dimensional drawing function 100, a two-dimensional drawing function 110, a texture drawing function 120, a screen drawing function 130, and a calculation function 140.

【0015】これら各機能100〜140は、それぞれ
概略次のように動作する。3次元作図機能100は、図
2に示す如き3次元形状200を作成する。2次元作図
機能110は、3次元形状200上の平面要素に対し2
次元データ(平面要素201)を作図する。次に、テク
スチャ作図機能120は、2次元データから閉曲線を単
純穴形状210と認識して、特定の色で塗りつぶしテク
スチャデータ220を作成する。画面描画機能130
は、3次元データの平面要素201上にテクスチャデー
タ220を合成する機能を有する。演算機能140は、
2次元データと3次元要素の厚み方向データから単純穴
形状210を3次元データ化する機能を有する。
Each of these functions 100 to 140 generally operates as follows. The three-dimensional drawing function 100 creates a three-dimensional shape 200 as shown in FIG. The two-dimensional drawing function 110 performs two-dimensional drawing on a planar element on the three-dimensional shape 200.
Dimension data (plane element 201) is drawn. Next, the texture drawing function 120 recognizes the closed curve as the simple hole shape 210 from the two-dimensional data, and creates the filled texture data 220 with a specific color. Screen drawing function 130
Has a function of synthesizing the texture data 220 on the plane element 201 of the three-dimensional data. The arithmetic function 140 is
It has a function to convert the simple hole shape 210 into three-dimensional data from two-dimensional data and three-dimensional element thickness direction data.

【0016】次に、本発明による好適実施形態の全体動
作を説明する。図1および図2において、3次元作図機
能100は、3次元形状200を作成する。3次元形状
200の平面要素201に対し、他の3次元形状と因果
関係のない、例えば放熱穴および軽量化目的の穴等の単
純穴形状210を作図する。作図機能は、2次元作図機
能110を用いる。
Next, the overall operation of the preferred embodiment according to the present invention will be described. 1 and 2, a three-dimensional drawing function 100 creates a three-dimensional shape 200. With respect to the planar element 201 of the three-dimensional shape 200, a simple hole shape 210 such as a heat radiating hole and a hole for reducing the weight, which has no causal relationship with other three-dimensional shapes, is drawn. The drawing function uses the two-dimensional drawing function 110.

【0017】3次元データの平面要素201に対し2次
元作図機能110で作成された単純穴形状210は、テ
クスチャ作図機能120により、閉曲線内部を特定の色
で塗りつぶされたテクスチャデータ220に変換され
る。テクスチャ作図機能120によって作成されたテク
スチャデータ220は、画面描画機能130によって3
次元形状200の平面要素201上に合成される。
The simple hole shape 210 created by the two-dimensional drawing function 110 for the plane element 201 of the three-dimensional data is converted by the texture drawing function 120 into texture data 220 in which the inside of the closed curve is filled with a specific color. . Texture data 220 created by the texture drawing function 120 is
It is synthesized on the plane element 201 of the two-dimensional shape 200.

【0018】このようにして、3次元データ作成作業中
の単純穴形状210は、3次元データとしてデータを持
つのではなく、平面要素201上に作成された2次元デ
ータ(単純穴形状210)とその2次元データから作成
されるテクスチャデータ220として認識し、作業中の
データ量の削減を可能にする。また、最終的な3次元デ
ータ出力時には、平面要素201から平面要素201の
厚み方向データと2次元作図データから作成される3次
元データとの差をとる機能を有する演算機能140によ
り、3次元データ150を出力する。
As described above, the simple hole shape 210 during the creation of the three-dimensional data does not have the data as the three-dimensional data, but the two-dimensional data (simple hole shape 210) created on the plane element 201. The data is recognized as texture data 220 created from the two-dimensional data, and the amount of data during operation can be reduced. At the time of final three-dimensional data output, the three-dimensional data is calculated by the arithmetic function 140 having a function of taking the difference between the thickness direction data of the two-dimensional drawing data and the three-dimensional data created from the two-dimensional drawing data. 150 is output.

【0019】以上、本発明による3次元CADデータ軽
量化方法および3次元CADシステムの好適実施形態を
詳述した。しかし、斯かる実施形態は、本発明の単なる
例示に過ぎず、何ら本発明を限定するものではない。本
発明の要旨を逸脱することなく、特定用途に応じて種々
の変形変更が可能であること、当業者には容易に理解で
きよう。
The preferred embodiments of the method for reducing the weight of three-dimensional CAD data and the three-dimensional CAD system according to the present invention have been described above. However, such an embodiment is merely an example of the present invention and does not limit the present invention in any way. It will be readily apparent to those skilled in the art that various modifications can be made in accordance with the particular application without departing from the spirit of the invention.

【0020】[0020]

【発明の効果】以上の説明から明らかな如く、本発明の
3次元CADデータ軽量化方法および3次元CADシス
テムによると、次の如く実用上の顕著な効果が得られ
る。第1に、3次元データを軽量化できることにある。
その理由は、単純穴形状の厚み方向のデータを持たずに
2次元テクスチャデータとして扱うためである。第2
に、単純穴形状を3次元データ化することができること
にある。その理由は、単純穴形状を3次元平面要素上に
2次元作図機能を用いて作図しており、厚み方向のデー
タを付加することにより最終的に3次元穴として処理で
きるためである。
As is apparent from the above description, the three-dimensional CAD data reduction method and the three-dimensional CAD system of the present invention have the following practically significant effects. First, three-dimensional data can be reduced in weight.
The reason for this is that it is handled as two-dimensional texture data without having data in the thickness direction of the simple hole shape. Second
In addition, a simple hole shape can be converted into three-dimensional data. The reason is that the simple hole shape is
This is because the drawing is performed using the two-dimensional drawing function, and the data can be finally processed as a three-dimensional hole by adding data in the thickness direction.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の好適実施形態のブロック図を示す。FIG. 1 shows a block diagram of a preferred embodiment of the present invention.

【図2】本発明の3次元CADシステムの応用例を示す
図である。
FIG. 2 is a diagram showing an application example of the three-dimensional CAD system of the present invention.

【符号の説明】[Explanation of symbols]

100 3次元作図手段 110 2次元作図手段 120 テクスチャ作図手段 130 画面描画手段 140 演算手段 150 3次元データ 200 3次元形状 201 平面要素 210 単純穴形状 220 テクスチャデータ REFERENCE SIGNS LIST 100 three-dimensional drawing means 110 two-dimensional drawing means 120 texture drawing means 130 screen drawing means 140 arithmetic means 150 three-dimensional data 200 three-dimensional shape 201 plane element 210 simple hole shape 220 texture data

Claims (6)

【特許請求の範囲】[Claims] 【請求項1】高さ、幅および奥行き方向の3次元データ
を使用する形状データによる3次元CADシステムにお
いて、 前記3次元データの単純形状部分を2次元データと、該
2次元データから作成されるテクスチャとして認識する
ことを特徴とする3次元CADデータ軽量化方法。
1. A three-dimensional CAD system based on shape data using three-dimensional data in height, width, and depth directions, wherein a simple shape portion of the three-dimensional data is created from the two-dimensional data and the two-dimensional data. A method for reducing the weight of three-dimensional CAD data, characterized in that it is recognized as a texture.
【請求項2】3次元データ出力時に、前記2次元データ
と3次元データの奥行き方向パラメータから3次元デー
タを作成することを特徴とする請求項1に記載の3次元
CADデータ軽量化方法。
2. The three-dimensional CAD data reduction method according to claim 1, wherein when outputting the three-dimensional data, three-dimensional data is created from the two-dimensional data and a depth direction parameter of the three-dimensional data.
【請求項3】前記単純形状部分として、平面要素の複数
の単純穴形状とすることを特徴とする請求項1又は2に
記載の3次元CADデータ軽量化方法。
3. The method for reducing three-dimensional CAD data according to claim 1, wherein the simple shape portion has a plurality of simple hole shapes of a plane element.
【請求項4】3次元データを作成する3次元作図手段
と、前記3次元データ上の平面要素に対し2次元データ
を作図する2次元作図手段と、前記2次元データから閉
曲線を単純穴形状として認識してテクスチャデータを作
成するテクスチャ作図手段とを備えることを特徴とする
3次元CADシステム。
4. A three-dimensional plotting means for generating three-dimensional data, two-dimensional plotting means for plotting two-dimensional data with respect to a plane element on the three-dimensional data, and converting a closed curve from the two-dimensional data into a simple hole shape. A three-dimensional CAD system comprising: a texture drawing unit that recognizes and generates texture data.
【請求項5】前記3次元データの前記平面要素上に前記
テクスチャデータを合成する画面描画手段を備えること
を特徴とする請求項4に記載の3次元CADシステム。
5. The three-dimensional CAD system according to claim 4, further comprising screen drawing means for synthesizing the texture data on the plane element of the three-dimensional data.
【請求項6】前記2次元データと前記3次元要素の奥行
き方向データから単純穴形状を3次元データ化する演算
手段を備えることを特徴とする請求項4又は5に記載の
3次元CADシステム。
6. The three-dimensional CAD system according to claim 4, further comprising an arithmetic unit for converting a simple hole shape into three-dimensional data from the two-dimensional data and the depth direction data of the three-dimensional element.
JP2000246237A 2000-08-15 2000-08-15 Method for reducing weight of three-dimensional cad data and three-dimensional cad system Pending JP2002063222A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2000246237A JP2002063222A (en) 2000-08-15 2000-08-15 Method for reducing weight of three-dimensional cad data and three-dimensional cad system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000246237A JP2002063222A (en) 2000-08-15 2000-08-15 Method for reducing weight of three-dimensional cad data and three-dimensional cad system

Publications (1)

Publication Number Publication Date
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7567249B2 (en) 2004-03-24 2009-07-28 Fujitsu Limited Three-dimensional drawing model generation method, three-dimensional model drawing method, and program thereof
JP2014513361A (en) * 2011-05-03 2014-05-29 富士通株式会社 Computer-implemented method for identifying a group of punched holes
US9449120B2 (en) 2011-12-06 2016-09-20 Fujitsu Limited Computer product, data processing method, and data processing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7567249B2 (en) 2004-03-24 2009-07-28 Fujitsu Limited Three-dimensional drawing model generation method, three-dimensional model drawing method, and program thereof
JP2014513361A (en) * 2011-05-03 2014-05-29 富士通株式会社 Computer-implemented method for identifying a group of punched holes
US9536018B2 (en) 2011-05-03 2017-01-03 Fujitsu Limited Computer-implemented method of identifying a group of perforations
US9449120B2 (en) 2011-12-06 2016-09-20 Fujitsu Limited Computer product, data processing method, and data processing device

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