WO2021024367A1 - Shape data processing device, shape data processing method, and shape data processing program - Google Patents

Shape data processing device, shape data processing method, and shape data processing program Download PDF

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Publication number
WO2021024367A1
WO2021024367A1 PCT/JP2019/030822 JP2019030822W WO2021024367A1 WO 2021024367 A1 WO2021024367 A1 WO 2021024367A1 JP 2019030822 W JP2019030822 W JP 2019030822W WO 2021024367 A1 WO2021024367 A1 WO 2021024367A1
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Prior art keywords
shape
data processing
information
shape data
division
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PCT/JP2019/030822
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French (fr)
Japanese (ja)
Inventor
光一 西浦
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インテグラル・テクノロジー株式会社
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Priority to PCT/JP2019/030822 priority Critical patent/WO2021024367A1/en
Priority to PCT/JP2020/002342 priority patent/WO2021024515A1/en
Priority to JP2021537560A priority patent/JP7189584B2/en
Publication of WO2021024367A1 publication Critical patent/WO2021024367A1/en

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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD

Definitions

  • the present invention relates to a shape data processing apparatus, a shape data processing method, and a shape data processing program.
  • Patent Document 1 describes a technique for determining the surface shape of an object classified in the technical field of CAE (Computer Aided Engineering: Computer Aided Engineering) such as structural analysis by using a plurality of symbols (+,-, 0). It is disclosed.
  • CAE Computer Aided Engineering: Computer Aided Engineering
  • Patent Document 1 since it is not possible to specify which category and what shape the surface shape of the classified object is, it can be used in the technical field of CAD. The reality is that there is no such thing.
  • An object of the present invention is to provide a shape data processing apparatus, a shape data processing method, and a shape data processing program.
  • the present invention provides the following shape data processing device, shape data processing method, and shape data processing program in order to solve the above problems.
  • the shape data processing device serves as a determination means for determining a plurality of shape identification information corresponding to the shapes of the plurality of surfaces in an object whose surface is divided into a plurality of surfaces.
  • the acquisition means for acquiring a plurality of characteristic information related to the shapes of the plurality of surfaces, the shape identification information determined by the determination means, and the characteristic information acquired by the acquisition means correspond to the above classification.
  • Each of the division information is provided with a registration means for registering in the database in association with the adjacent division information corresponding to the adjacent division adjacent to the division.
  • the shape data processing method includes a determination step of determining a plurality of shape identification information corresponding to the shapes of the plurality of surfaces in an object whose surface is divided into a plurality of surfaces.
  • the acquisition step of acquiring a plurality of characteristic information related to the shapes of the plurality of surfaces, the shape identification information determined in the determination step, and the characteristic information acquired in the acquisition step correspond to the above classification. It is characterized by including a registration step of registering in the database in association with the adjacent division information corresponding to the adjacent division adjacent to the division for each division information.
  • Shape Data Processing Program is for causing a computer to execute each step of the shape data processing method according to the present invention.
  • FIG. 1 is a block diagram showing an example of a hardware configuration of a shape data processing device.
  • FIG. 2 is a flowchart showing an example of a processing procedure of the shape data processing apparatus.
  • FIG. 3 is an explanatory diagram showing an example of a surface of a part of the division information of the object.
  • FIG. 4 is an explanatory diagram of an object determination process by the shape data processing device.
  • FIG. 5 is an explanatory diagram of an object determination process by the shape data processing device.
  • FIG. 6 is an explanatory diagram of an object determination process by the shape data processing device.
  • FIG. 7 is a flowchart showing a procedure for determining an object by the shape data processing device.
  • FIG. 1 is a block diagram showing an example of a hardware configuration of a shape data processing device.
  • FIG. 2 is a flowchart showing an example of a processing procedure of the shape data processing apparatus.
  • FIG. 3 is an explanatory diagram showing an example of a surface of a part of the division information
  • FIG. 8 is an explanatory diagram showing a processing result when the determination processing is applied to a specific shape portion of the object.
  • FIG. 9 is a chart schematically showing an example of a data structure of a part of the shape data of the object shown in FIG. 8 in the database.
  • FIG. 10 is a schematic diagram showing an example of an input screen for inputting change values of shape identification information and characteristic information.
  • FIG. 1 is a block diagram showing an example of the hardware configuration of the shape data processing device 100.
  • the shape data processing device 100 includes a control unit 110 (computer), a storage unit 120, a reading unit 130, and an output unit 140.
  • the control unit 110 is configured to realize various functions required by the control unit 110 by executing the shape data processing program P stored (installed) in advance in the recording device 121 of the storage unit 120.
  • the control unit 110 is composed of a processor such as a CPU.
  • the control unit 110 performs various processes by loading and executing a software program such as the shape data processing program P previously stored in the recording device 121 on the RAM 122b of the memory device 122.
  • the storage unit 120 includes a memory device 122 such as a ROM 122a and a RAM 122b, and a recording device 121 such as a flash memory and a hard disk device.
  • the shape data processing program P acquired from the reading unit 130 is stored in the recording device 121 in advance.
  • the output unit 140 includes a display device 141 such as a liquid crystal display panel and a printing device 142 such as a laser printer.
  • the display device 141 displays the output display information from the control unit 110 on the display screen.
  • the printing device 142 prints the output display information from the control unit 110.
  • the reading unit 130 includes a reading device 131 that reads a recording medium M such as a CD-ROM.
  • the shape data processing program P is recorded in advance on the recording medium M.
  • the recording medium M may be a recording disc such as a CD-ROM, or any other recording medium.
  • the shape data processing program P is not limited to the one acquired via a recording medium such as a CD-ROM, and may be downloaded via a communication means such as the Internet.
  • the control unit 110 has a three-dimensional CAD data input means Q1, a shape recognition means Q2, a determination means Q3, an acquisition means Q4, a registration means Q5, a reception means Q6, a specific means Q7, and an output means Q8. It functions as a means to prepare. That is, the shape data processing program P controls a step including a three-dimensional CAD data input step, a shape recognition step, a determination step, an acquisition step, a registration step, a reception step, a specific step, and an output step. Let unit 110 execute.
  • FIG. 2 is a flowchart showing an example of a processing procedure of the shape data processing device 100.
  • each process of 3D CAD data input, shape recognition, shape identification information determination, characteristic information acquisition, database registration, change acceptance, shape identification, and information output is performed.
  • 3D CAD data input In the 3D CAD data input step, the control unit 110 inputs 3D CAD data (3D CAD model), which is the shape data of the object (product) created by the 3D CAD, from the reading unit 130.
  • the control unit 110 recognizes the shape based on the three-dimensional CAD data.
  • the shape recognition step can be mainly divided into three steps.
  • each surface information of the 3D CAD data is acquired.
  • a free mesh is created on each surface of the first input 3D CAD data, and a database for feature calculation (database DB in this example) is constructed.
  • Such features include, for example, surface curvature, outer circumference curvature, outer circumference length, fixed points on the outer circumference, length ratio of paired outer circumference pairs, outer circumference circular shape, cylindrical shape, sphericality, internal angle of fixed points, etc. Includes area, in-plane normal angle difference, surface continuity, perimeter contact angle, and cross-sectional shape. In order to calculate these features, we mainly refer to the mesh data together with the acquired geometry shape information.
  • feature means, for example, (1) “Overall shape”: Twisted uneven plate with holes (2) “Draw bead”: Strip-shaped uneven part to be made on a flat surface (3) “Fillet”: Sharpened corners It refers to the “shape” (or the word that indicates it) such as a part, and is called “shape”.
  • each surface is classified based on the acquired information and features. After acquiring the data and calculating the characteristics of each surface, each surface is classified into 5 different types (plane, fillet, cylinder, sphere, curved surface). In order to classify each surface, it is confirmed whether it has a specific feature depending on the surface type to be classified.
  • the curvature of the surface As a fillet surface, the curvature of the surface, the curvature of the outer circumference, the outer circumference length, the width of the surface, the fixed points on the outer circumference, the length ratio of the paired outer circumference pair, the outer circumference Inspect the circular shape, the inner angle of the fixed point, the area, the continuity of the surface, the contact angle of the outer circumference, and the cross-sectional shape. Fillets, cylinders, spheres, and curved surfaces are all considered curved surfaces in the first place. Then distinguish them from different features. Also, a cylinder and a sphere can be fillets. If they have a certain form of continuity with the adjacent surface, they are considered fillets.
  • a complex part consisting of multiple surfaces is recognized.
  • 2D holes on the plate shape model, 3D holes on the solid model, stepped holes such as counterbore, steps, embossing, flanges, fillet flow, chamfers, corner fillets, thin surfaces between fillets, ribs, grooves Use the surface types and other information classified in the second step to recognize parts such as, gear teeth, and screws.
  • Other information used to recognize the part includes the combination of face types, the positional relationship between the faces, the size of the part, and the cross-sectional shape when a composite shape is formed by a plurality of faces.
  • the specific part recognized through the above three steps is stored in the system together with CAD information, mesh area information, and shape data at the time of recognition, and is used when creating a mesh according to the rules. ..
  • shape data such as characteristic information is associated with each classification information corresponding to the classification of the object.
  • the division information is a surface symbol and / or a number corresponding to a surface (hereinafter, also referred to as a surface).
  • the surface means one unit that constitutes an object in three-dimensional CAD data. That is, the surface is obtained by dividing the surface of the object into a plurality of surfaces for convenience in order to grasp the position of each shape on the object, and each of the plurality of surfaces is given a symbol and / or a number. Will be done.
  • shape data such as characteristic information associated with each classification information may be registered in advance in the database DB. In this case, the shape recognition step can be omitted.
  • the control unit 110 determines a plurality of shape identification information (+1, -1, 0) corresponding to the shapes of the plurality of surfaces in the object whose surface is divided into a plurality of surfaces (surfaces).
  • FIG. 3 is an explanatory diagram showing an example of the surface of the division information F12 of a part of the object.
  • the surface shown in FIG. 3 illustrates the surface of the classification information F12 of the rounded thick portion (fillet) which is the root of the rising portion of the rib-shaped rib shown in FIG. 8 to be described later.
  • the area a1 As information on each surface, the area a1, the lines L1 to L4 and the number of lines constituting the outer shape of each surface, the lengths of the respective lines L1 to L4, and the maximum line length (L1 (or L3 in this example)).
  • the determination step is Cross product calculation step to obtain the outer product vector by the normal vector (out-of-plane vector) of the surface (reference surface) of the first division information and the tangential vector in which the surface of the first division information and the surface of the second division information are in contact with each other.
  • FIG. 4 to 6 are explanatory views of the object determination process by the shape data processing device 100. Further, FIG. 7 is a flowchart showing a procedure for determining an object by the shape data processing device 100.
  • the outer product calculation step one surface registered in the database DB is set as the surface of the first division information F1 (reference surface), and another surface of the other division information adjacent to the surface is used as the surface of the second division information F2. (S1).
  • the plane (reference plane) of the first division information F1 is basically a plane.
  • the outer product vector D is obtained from the vector B in the tangential direction in which the surface of F2 is in contact.
  • the inner product of the outer product vector D obtained in the outer product calculation step and the normal vector (outside vector) C of the surface of the second division information F2 is obtained (S2), and the calculation result is determined. Enter in.
  • the surface shape of the surface of the second division information F2 with respect to the surface of the first division information F1 is determined based on the input calculation result.
  • the surface of the second division information F2 is concave (FIG. 4). (See) to determine the shape identification information (+1) (S4).
  • the calculation result is not a positive value (S3: No)
  • it is determined whether or not the calculation result is a negative value (S5)
  • the calculation result shows a negative value (S5: Yes).
  • the shape identification information (-1) is determined (S6) by using the surface of the second division information F2 as a convex surface (see FIG. 5).
  • step S5 when the calculation result is not a negative value (step S5: No), it is determined whether or not the calculation result is a zero value (S7), and when the calculation result indicates a zero value (S7: Yes). ),
  • the shape identification information (0) is determined on the assumption that the surface of the second division information F2 is a plane continuous with the surface of the first division information F1 (see FIG. 6) (S8). If No is determined even in S7, error processing (S11) is executed to move to S9.
  • the surface of the adjacent surface that bites into the surface when viewed from the reference surface always has a negative value, and the surface that extends outside the surface always has a positive value. I am using.
  • the control unit 110 acquires a plurality of characteristic information related to the shapes of the plurality of surfaces.
  • the characteristic information is the characteristic information recognized in the shape recognition step or the characteristic information registered in advance. Examples of the characteristic information include the width, length, curvature of the surface (surface), and the coordinates of the inflection point at which the shape is switched within the surface (surface).
  • control unit 110 sets the shape identification information (+1, -1, 0) determined in the determination step and the characteristic information acquired in the acquisition step adjacent to each other for each division information corresponding to the division. It is registered in the database DB in association with the adjacent classification information corresponding to the classification.
  • the shape identification information of the surface when shows a value of zero is classified by (0), and these shape identification information and the corresponding characteristic information are registered in the database DB in association with the adjacent classification information for each classification information.
  • the shape of the object can be extracted (that is, specified) by the combination of these shape identification information (+1, -1, 0) in the subsequent processing such as search.
  • FIG. 8 illustrates the processing result when the above determination processing is applied to the specific shape portion of the object 10.
  • the result of applying the above determination process to the rib shape is shown, and the result of the inner product calculation is positive (+) on the surface of the rounded thick portion (fillet) which is the base of the rising portion of the rib.
  • the shape identification information is +1 and the result of the inner product calculation is minus ( ⁇ ) and the shape identification information is -1 on the surface of the tip (end) of the rib.
  • FIG. 9 shows a part of the shape data of the object 10 shown in FIG. 8 in the database DB [classification information F11 to F22, shape identification information (+1, -1, 0), adjacent classification information F11 to F22, characteristic information (characteristics). It is a chart which shows an example of the data structure of the value 1 to characteristic value n) (n is an integer of 2 or more)].
  • the length D 10 mm is registered as the characteristic value 2
  • shape data is also registered in F12 to F22 in the same manner.
  • the control unit 110 receives an input operation for changing the shape identification information (+1, -1, 0) and / or the characteristic information (characteristic value 1 to characteristic value n).
  • change values of shape identification information (+1, -1, 0) and characteristic information (characteristic value 1 to characteristic value n) are accepted.
  • FIG. 10 is a schematic diagram showing an example of an input screen G for inputting change values of shape identification information (+1, -1, 0) and characteristic information (characteristic value 1 to characteristic value n).
  • the input screen G is divided into a first input screen G1 and a second input screen G2.
  • the classification information F22 in the illustrated example
  • the second input screen G2 is displayed.
  • the second input screen G2 On the second input screen G2, adjacent classification information (F21, F16, F19, F12 in the illustrated example) corresponding to the classification information (F22 in the illustrated example) input on the first input screen G1 is displayed.
  • shape identification information (0, -1, 0, -1 in the illustrated example) and characteristic information (width 20 mm, length in the illustrated example) corresponding to the classification information (F22 in the illustrated example) input on the first input screen G1.
  • 18 mm, curvature 0, ..., Inflection point coordinates are displayed so that they can be changed and input.
  • the control unit 110 receives shape identification information (+1, -1, 0), characteristic information (characteristic value 1 to characteristic value n), and adjacent classification information for each division information (F11 to F22) stored in the database DB. From (F11 to F22), the classification information (F11 to F22) and the adjacent classification information (F11 to F22) are connected to specify the shape of the object 10.
  • the surface of the division information F22 is a plane (curvature 0) having a width W of 20 mm and a length D of 18 mm, is adjacent to the surfaces of the division information F21 and F19 in a plane, and is adjacent to the surfaces of the division information F16 and F12.
  • the shape of the object 10 can be specified by performing the recognition processing in the same manner for the other surfaces adjacent to the classification information F22 and all the surfaces adjacent to the classification information F11 to F21.
  • control unit 110 determines the object 10 by changing the shape identification information (+1, -1, 0) and / or the characteristic information (characteristic value 1 to characteristic value n) changed in the reception step. Identify the shape of.
  • control unit 110 outputs the shape of the object 10 specified in the specific step to the display device 141 or the printing device 142.
  • a plurality of shape identification information (+1, -1, 0) corresponding to each of the shapes of the plurality of surfaces in the object 10 is determined, and a plurality of characteristics related to the shapes of the plurality of surfaces are obtained.
  • Information (characteristic value 1 to characteristic value n) is acquired, and the determined shape identification information (+1, -1, 0) and the acquired characteristic information (characteristic value 1 to characteristic value n) are classified into classification information (F11 to F22). Since each is registered in the database DB in association with the adjacent classification information (F11 to F22), the shape identification information (+1, -1, 0) and the characteristic information (characteristic value 1 to characteristic value n) are stored in the classification information (F11 to F22).
  • the classification information (F11 to F22) is associated with the adjacent classification information (F11 to F22), the connection between the classification information (F11 to F22) and the adjacent classification information (F11 to F22) can be recognized. As a result, the shape of the object 10 can be easily specified. Moreover, even if the object 10 has a complicated shape, it can have a simple data structure, which makes it possible to simplify the control configuration and, by extension, increase the processing speed.
  • the control unit 110 includes shape identification information (+1, -1, 0), characteristic information (characteristic value 1 to characteristic value n), and adjacent to each division information (F11 to F22) stored in the database DB.
  • the shape of the object 10 is specified by connecting the classification information (F11 to F22) and the adjacent classification information (F11 to F22) from the classification information (F11 to F22), and the shape of the specified target 10 is output.
  • the user can use the shape identification information (+1, -1,0), the characteristic information (characteristic value 1 to the characteristic value n), and the adjacent classification information (characteristic value 1 to characteristic value n) for each division information (F11 to F22) stored in the database DB.
  • the shape of the object 10 output from F11 to F22) can be confirmed.
  • model change when designing a new object from the current object 10 (so-called model change), it is desired to design a new object by easily changing the shape and / or shape characteristics of the current object 10. It is rare.
  • the control unit 110 accepts and changes the input operation for changing the shape identification information (+1, -1, 0) and / or the characteristic information (characteristic value 1 to characteristic value n).
  • the shape of the object 10 is specified by the changed value of the shape identification information (+1, -1, 0) and / or the characteristic information (characteristic value 1 to characteristic value n). By doing so, it is possible to easily change the shape and / or characteristics of the current object 10 and easily design a new object.
  • the control unit 110 may include a plurality of processors that separately process the classification information (F11 to F22).
  • the control unit 110 can perform parallel processing by a plurality of processors.
  • the first processor is assigned to the division information F11 to F14
  • the second processor is assigned to the division information F15 to F18
  • the third processor is assigned to the division information F19 to F12, respectively, and the first processor, the second processor, and the second processor are assigned.
  • Parallel processing can be performed by 3 processors. By doing so, parallel processing can be easily performed, and thereby, further high-speed processing can be realized with a simple control configuration.
  • the present invention relates to a technique for converting three-dimensional shape data into one-dimensional shape data, and can be particularly applied to the technical field of CAD.

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Abstract

These shape data processing device, shape data processing method, and shape data processing program: determine a plurality of sets of shape identification information corresponding respectively to the shapes of a plurality of surfaces of an object, said plurality of surfaces being obtained by dividing the surface of the object; acquire a plurality of sets of characteristic information relating respectively to the shapes of the plurality of surfaces; and associate, for each set of section information corresponding to a section, the determined shape identification information and the acquired characteristic information with adjacent section information corresponding to an adjacent section, and register the resulting associated information in a database.

Description

形状データ処理装置、形状データ処理方法及び形状データ処理プログラムShape data processing device, shape data processing method and shape data processing program
　本発明は、形状データ処理装置、形状データ処理方法及び形状データ処理プログラムに関する。 The present invention relates to a shape data processing apparatus, a shape data processing method, and a shape data processing program.
　特許文献１には、構造解析等のＣＡＥ（Ｃｏｍｐｕｔｅｒ　Ａｉｄｅｄ　Ｅｎｇｉｎｅｅｒｉｎｇ：コンピュータ支援エンジニアリング）の技術分野において区分された対象物の表面形状を複数の記号（＋，－，０）を用いて判定する技術が開示されている。 Patent Document 1 describes a technique for determining the surface shape of an object classified in the technical field of CAE (Computer Aided Engineering: Computer Aided Engineering) such as structural analysis by using a plurality of symbols (+,-, 0). It is disclosed.
国際公開第２０１７／１７５３４９号International Publication No. 2017/175349
　ところで、ＣＡＤ（Ｃｏｍｐｕｔｅｒ－Ａｉｄｅｄ　Ｄｅｓｉｇｎ：コンピュータ支援設計）の技術分野においては、区分された対象物の表面形状の判定結果を利用して対象物の形状を出力することが望まれている。 By the way, in the technical field of CAD (Computer-Aided Design: computer-aided design), it is desired to output the shape of an object by using the determination result of the surface shape of the classified object.
　しかしながら、特許文献１の開示技術では、区分された対象物の表面形状がどこの区分のものでどのような形状のものであるかを特定できないため、ＣＡＤの技術分野に利用することができていないのが実情である。 However, in the disclosed technology of Patent Document 1, since it is not possible to specify which category and what shape the surface shape of the classified object is, it can be used in the technical field of CAD. The reality is that there is no such thing.
　そこで、本発明は、区分された対象物の表面形状がどこの区分のものでどのような形状のものであるかを特定することができ、これにより、ＣＡＤの技術分野に利用することができる形状データ処理装置、形状データ処理方法及び形状データ処理プログラムを提供することを目的とする。 Therefore, the present invention can specify which category and what shape the surface shape of the classified object is, and can be used in the technical field of CAD. An object of the present invention is to provide a shape data processing apparatus, a shape data processing method, and a shape data processing program.
　本発明は、前記課題を解決するため、次の形状データ処理装置、形状データ処理方法及び形状データ処理プログラムを提供する。 The present invention provides the following shape data processing device, shape data processing method, and shape data processing program in order to solve the above problems.
　（１）形状データ処理装置
　本発明に係る形状データ処理装置は、表面を複数の面に区分された対象物における前記複数の面の形状にそれぞれ対応する複数の形状識別情報を判定する判定手段と、前記複数の面の形状にそれぞれ関係する複数の特性情報を取得する取得手段と、前記判定手段にて判定した前記形状識別情報と前記取得手段にて取得した前記特性情報とを前記区分に対応する区分情報毎に前記区分に隣接する隣接区分に対応する隣接区分情報と関連付けてデータベースに登録する登録手段とを備えることを特徴とする。 (1) Shape Data Processing Device The shape data processing device according to the present invention serves as a determination means for determining a plurality of shape identification information corresponding to the shapes of the plurality of surfaces in an object whose surface is divided into a plurality of surfaces. The acquisition means for acquiring a plurality of characteristic information related to the shapes of the plurality of surfaces, the shape identification information determined by the determination means, and the characteristic information acquired by the acquisition means correspond to the above classification. Each of the division information is provided with a registration means for registering in the database in association with the adjacent division information corresponding to the adjacent division adjacent to the division.
　（２）形状データ処理方法
　本発明に係る形状データ処理方法は、表面を複数の面に区分された対象物における前記複数の面の形状にそれぞれ対応する複数の形状識別情報を判定する判定ステップと、前記複数の面の形状にそれぞれ関係する複数の特性情報を取得する取得ステップと、前記判定ステップにて判定した前記形状識別情報と前記取得ステップにて取得した前記特性情報とを前記区分に対応する区分情報毎に前記区分に隣接する隣接区分に対応する隣接区分情報と関連付けてデータベースに登録する登録ステップとを含むことを特徴とする。 (2) Shape Data Processing Method The shape data processing method according to the present invention includes a determination step of determining a plurality of shape identification information corresponding to the shapes of the plurality of surfaces in an object whose surface is divided into a plurality of surfaces. The acquisition step of acquiring a plurality of characteristic information related to the shapes of the plurality of surfaces, the shape identification information determined in the determination step, and the characteristic information acquired in the acquisition step correspond to the above classification. It is characterized by including a registration step of registering in the database in association with the adjacent division information corresponding to the adjacent division adjacent to the division for each division information.
　（３）形状データ処理プログラム
　本発明に係る形状データ処理プログラムは、前記本発明に係る形状データ処理方法の各ステップを、コンピュータに実行させるためのものである。 (3) Shape Data Processing Program The shape data processing program according to the present invention is for causing a computer to execute each step of the shape data processing method according to the present invention.
　本発明によれば、区分された対象物の表面形状がどこの区分のものでどのような形状のものであるかを特定することができ、これにより、ＣＡＤの技術分野に利用することが可能となる。 According to the present invention, it is possible to specify which category and what shape the surface shape of the classified object is, and thereby it can be used in the technical field of CAD. It becomes.
図１は、形状データ処理装置のハードウェア構成の一例を示すブロック図である。FIG. 1 is a block diagram showing an example of a hardware configuration of a shape data processing device. 図２は、形状データ処理装置の処理手順の一例を示すフローチャートである。FIG. 2 is a flowchart showing an example of a processing procedure of the shape data processing apparatus. 図３は、対象物の一部の区分情報の面の一例を示す説明図である。FIG. 3 is an explanatory diagram showing an example of a surface of a part of the division information of the object. 図４は、形状データ処理装置による対象物の判定処理の説明図である。FIG. 4 is an explanatory diagram of an object determination process by the shape data processing device. 図５は、形状データ処理装置による対象物の判定処理の説明図である。FIG. 5 is an explanatory diagram of an object determination process by the shape data processing device. 図６は、形状データ処理装置による対象物の判定処理の説明図である。FIG. 6 is an explanatory diagram of an object determination process by the shape data processing device. 図７は、形状データ処理装置による対象物の判定処理の手順を示すフローチャートである。FIG. 7 is a flowchart showing a procedure for determining an object by the shape data processing device. 図８は、判定処理を対象物の具体的な形状部分に当てはめたときの処理結果を示す説明図である。FIG. 8 is an explanatory diagram showing a processing result when the determination processing is applied to a specific shape portion of the object. 図９は、データベースにおいて図８に示す対象物の一部の形状データのデータ構造の一例を概略的に示す図表である。FIG. 9 is a chart schematically showing an example of a data structure of a part of the shape data of the object shown in FIG. 8 in the database. 図１０は、形状識別情報及び特性情報の変更値を入力するための入力画面の一例を示す模式図である。FIG. 10 is a schematic diagram showing an example of an input screen for inputting change values of shape identification information and characteristic information.
　以下、本発明に係る実施の形態について図面を参照しながら説明する。 Hereinafter, embodiments according to the present invention will be described with reference to the drawings.
　［形状データ処理装置のハードウェア構成］
　先ず、本発明の実施の形態に係る形状データ処理装置１００のハードウェア構成について図１を参照しながら以下に説明する。 [Hardware configuration of shape data processing device]
First, the hardware configuration of the shape data processing device 100 according to the embodiment of the present invention will be described below with reference to FIG.
　図１は、形状データ処理装置１００のハードウェア構成の一例を示すブロック図である。 FIG. 1 is a block diagram showing an example of the hardware configuration of the shape data processing device 100.
　図１に示すように、形状データ処理装置１００は、制御部１１０（コンピュータ）、記憶部１２０、読取部１３０及び出力部１４０を備えている。制御部１１０は、記憶部１２０の記録装置１２１に予め格納（インストール）された形状データ処理プログラムＰを実行することによって、制御部１１０に必要な各種の機能を実現させるように構成されている。詳しくは、制御部１１０は、ＣＰＵ等のプロセッサーで構成されている。制御部１１０は、記録装置１２１に予め格納された形状データ処理プログラムＰ等のソフトウェアプログラムをメモリ装置１２２のＲＡＭ１２２ｂ上にロードして実行することにより、各種の処理を行う。記憶部１２０は、ＲＯＭ１２２ａ、ＲＡＭ１２２ｂ等のメモリ装置１２２、及び、フラッシュメモリ、ハードディスク装置等の記録装置１２１を備えている。記録装置１２１には、読取部１３０から取得した形状データ処理プログラムＰが予め格納される。出力部１４０は、液晶表示パネル等の表示装置１４１と、レーザープリンタ等の印刷装置１４２を備えている。表示装置１４１は、制御部１１０からの出力表示情報を表示画面に表示する。印刷装置１４２は、制御部１１０からの出力表示情報を印刷する。読取部１３０は、ＣＤ－ＲＯＭ等の記録媒体Ｍを読み取る読取装置１３１を備えている。記録媒体Ｍには、形状データ処理プログラムＰが予め記録されている。なお、記録媒体Ｍは、ＣＤ－ＲＯＭ等の記録ディスクの他、他の各種の記録媒体であってもよい。また、形状データ処理プログラムＰは、ＣＤ－ＲＯＭ等の記録媒体を介して取得したものには限定されず、インターネット等の通信手段を介してダウンロードされたものであってもよい。 As shown in FIG. 1, the shape data processing device 100 includes a control unit 110 (computer), a storage unit 120, a reading unit 130, and an output unit 140. The control unit 110 is configured to realize various functions required by the control unit 110 by executing the shape data processing program P stored (installed) in advance in the recording device 121 of the storage unit 120. Specifically, the control unit 110 is composed of a processor such as a CPU. The control unit 110 performs various processes by loading and executing a software program such as the shape data processing program P previously stored in the recording device 121 on the RAM 122b of the memory device 122. The storage unit 120 includes a memory device 122 such as a ROM 122a and a RAM 122b, and a recording device 121 such as a flash memory and a hard disk device. The shape data processing program P acquired from the reading unit 130 is stored in the recording device 121 in advance. The output unit 140 includes a display device 141 such as a liquid crystal display panel and a printing device 142 such as a laser printer. The display device 141 displays the output display information from the control unit 110 on the display screen. The printing device 142 prints the output display information from the control unit 110. The reading unit 130 includes a reading device 131 that reads a recording medium M such as a CD-ROM. The shape data processing program P is recorded in advance on the recording medium M. The recording medium M may be a recording disc such as a CD-ROM, or any other recording medium. Further, the shape data processing program P is not limited to the one acquired via a recording medium such as a CD-ROM, and may be downloaded via a communication means such as the Internet.
　［形状データ処理装置のソフトウェア構成］
　次に、形状データ処理装置１００のソフトウェア構成について図１を参照しながら以下に説明する。 [Software configuration of shape data processing device]
Next, the software configuration of the shape data processing device 100 will be described below with reference to FIG.
　制御部１１０は、３次元ＣＡＤデータ入力手段Ｑ１と、形状認識手段Ｑ２と、判定手段Ｑ３と、取得手段Ｑ４と、登録手段Ｑ５と、受付手段Ｑ６と、特定手段Ｑ７と、出力手段Ｑ８とを備える手段として機能する。すなわち、形状データ処理プログラムＰは、３次元ＣＡＤデータ入力ステップと、形状認識ステップと、判定ステップと、取得ステップと、登録ステップと、受付ステップと、特定ステップと、出力ステップとを含むステップを制御部１１０に実行させる。 The control unit 110 has a three-dimensional CAD data input means Q1, a shape recognition means Q2, a determination means Q3, an acquisition means Q4, a registration means Q5, a reception means Q6, a specific means Q7, and an output means Q8. It functions as a means to prepare. That is, the shape data processing program P controls a step including a three-dimensional CAD data input step, a shape recognition step, a determination step, an acquisition step, a registration step, a reception step, a specific step, and an output step. Let unit 110 execute.
　［形状データ処理装置の処理手順］
　図２は、形状データ処理装置１００の処理手順の一例を示すフローチャートである。 [Processing procedure of shape data processing device]
FIG. 2 is a flowchart showing an example of a processing procedure of the shape data processing device 100.
　形状データ処理装置１００の処理手順では、３次元ＣＡＤデータ入力、形状認識、形状識別情報判定、特性情報取得、データベース登録、変更受付、形状特定、情報出力の各処理を行う。 In the processing procedure of the shape data processing device 100, each process of 3D CAD data input, shape recognition, shape identification information determination, characteristic information acquisition, database registration, change acceptance, shape identification, and information output is performed.
　（３次元ＣＡＤデータ入力）
　３次元ＣＡＤデータ入力ステップでは、制御部１１０は、３次元ＣＡＤで作成された対象物（製品）の形状データである３次元ＣＡＤデータ（３次元ＣＡＤモデル）が読取部１３０から入力される。 (3D CAD data input)
In the 3D CAD data input step, the control unit 110 inputs 3D CAD data (3D CAD model), which is the shape data of the object (product) created by the 3D CAD, from the reading unit 130.
　（形状認識）
　次に、形状認識ステップでは、制御部１１０は、３次元ＣＡＤデータに基づいて形状を認識する。詳しくは、形状認識ステップは、主に３つのステップに分けることができる。 (Shape recognition)
Next, in the shape recognition step, the control unit 110 recognizes the shape based on the three-dimensional CAD data. Specifically, the shape recognition step can be mainly divided into three steps.
　第１ステップでは、３次元ＣＡＤデータのそれぞれの面情報を取得する。最初に入力された３次元ＣＡＤデータのそれぞれの面にフリーメッシュを作成し、特徴計算のためのデータベース（この例ではデータベースＤＢ）を構築する。かかる特徴は、例えば、面の曲率、外周の曲率、外周長さ、外周上の固定点、対になる外周ペアの長さ比、外周の円形状、円筒形状、球面度、固定点の内角、面積、面内の法線方向角度差、サーフェス連続性、外周の接触角度、そして断面形状が含まれる。これらの特徴を計算するために、取得したジオメトリ形状の情報とともにメッシュデータを主に参照する。 In the first step, each surface information of the 3D CAD data is acquired. A free mesh is created on each surface of the first input 3D CAD data, and a database for feature calculation (database DB in this example) is constructed. Such features include, for example, surface curvature, outer circumference curvature, outer circumference length, fixed points on the outer circumference, length ratio of paired outer circumference pairs, outer circumference circular shape, cylindrical shape, sphericality, internal angle of fixed points, etc. Includes area, in-plane normal angle difference, surface continuity, perimeter contact angle, and cross-sectional shape. In order to calculate these features, we mainly refer to the mesh data together with the acquired geometry shape information.
　本明細書でいう「特徴」とは、例えば、
（１）「全体の形状」：穴の開いている捻じれた凹凸のある板
（２）「ドロービード」：平らな面に作る帯状の凹凸部分
（３）「フィレット」：尖った角を丸く削った部分
などの「形状」（又はそれを示す言葉）をいい、「シェープ」と称される。 The term "feature" as used herein means, for example,
(1) "Overall shape": Twisted uneven plate with holes (2) "Draw bead": Strip-shaped uneven part to be made on a flat surface (3) "Fillet": Sharpened corners It refers to the "shape" (or the word that indicates it) such as a part, and is called "shape".
　また、「特徴＝形状」の「起点（頂点、端部を含む）」「切り替わる」部分（但し、３次元ＣＡＤデータに表現されている「線」すべてがそれに相当するわけではない。）は、「フィーチャー」と称される。 In addition, the "starting point (including vertices and ends)" and "switching" part of "feature = shape" (however, not all "lines" expressed in 3D CAD data correspond to it). Called a "feature".
　第２ステップでは、取得した情報と特徴を元にそれぞれの面を分類分けする。データを取得し、それぞれの面の特徴を計算した後に、それぞれの面を５つの異なるタイプ（平面、フィレット、円筒、球、曲面）に分類する。各面を分類するためには、分類する面タイプによって特定の特徴を有するか確認する。例として、ある面をフィレットの面だとみなすためには、面の曲率、外周の曲率、外周長さ、面の幅、外周上の固定点、対になる外周ペアの長さ比、外周の円形状、固定点の内角、面積、サーフェスの連続性、外周の接触角度、そして断面形状を検査する。フィレット、円筒、球、そして曲面は全て最初の段階では曲面とみなす。その後異なる特徴からそれらを区別する。また、円筒と球とはフィレットになり得る。それらが特定の形で隣接面との連続性がある場合はフィレットとみなす。 In the second step, each surface is classified based on the acquired information and features. After acquiring the data and calculating the characteristics of each surface, each surface is classified into 5 different types (plane, fillet, cylinder, sphere, curved surface). In order to classify each surface, it is confirmed whether it has a specific feature depending on the surface type to be classified. As an example, to consider a surface as a fillet surface, the curvature of the surface, the curvature of the outer circumference, the outer circumference length, the width of the surface, the fixed points on the outer circumference, the length ratio of the paired outer circumference pair, the outer circumference Inspect the circular shape, the inner angle of the fixed point, the area, the continuity of the surface, the contact angle of the outer circumference, and the cross-sectional shape. Fillets, cylinders, spheres, and curved surfaces are all considered curved surfaces in the first place. Then distinguish them from different features. Also, a cylinder and a sphere can be fillets. If they have a certain form of continuity with the adjacent surface, they are considered fillets.
　第３ステップでは、複数の面からなる複雑な部位の認識を行う。板形状モデル上の２Ｄの穴、ソリッドモデル上の３Ｄの孔、ザグリをはじめとした段付き孔、段差、エンボス、フランジ、フィレット流れ、面取り、角部フィレット、フィレット間の細い面、リブ、溝、ギヤの歯、ネジのような部位を認識するために、第２ステップで分類した面タイプとその他の情報を使用する。部位の認識を行うめに使用したその他の情報には、面タイプの組み合わせ、面同士の位置関係、部位の大きさ、複数の面で複合形状を形成した際の断面形状などがある。 In the third step, a complex part consisting of multiple surfaces is recognized. 2D holes on the plate shape model, 3D holes on the solid model, stepped holes such as counterbore, steps, embossing, flanges, fillet flow, chamfers, corner fillets, thin surfaces between fillets, ribs, grooves Use the surface types and other information classified in the second step to recognize parts such as, gear teeth, and screws. Other information used to recognize the part includes the combination of face types, the positional relationship between the faces, the size of the part, and the cross-sectional shape when a composite shape is formed by a plurality of faces.
　以上、３つのステップを経て認識された特定部位は、ＣＡＤの情報、メッシュの領域情報、認識した際の形状データをまとめてシステム内部で保持され、ルールに従ったメッシュ作成の際に使用される。 The specific part recognized through the above three steps is stored in the system together with CAD information, mesh area information, and shape data at the time of recognition, and is used when creating a mesh according to the rules. ..
　このとき、データベースＤＢにおいて、対象物の区分に対応する区分情報毎に特性情報等の形状データが関連付けられている。この例では、区分情報は、サーフェス（以下、面ということもある。）に対応するサーフェス記号及び／又は番号とされている。ここで、サーフェスとは、３次元ＣＡＤデータにおいて対象物を構成する一単位を意味する。すなわち、サーフェスは、対象物における個々の形状の位置を把握するために、便宜上、対象物の表面をサーフェスで複数に区切ったものであり、複数のサーフェスのそれぞれには記号及び／又は番号が付与される。なお、データベースＤＢにおいて区分情報毎に関連付けられた特性情報等の形状データが予め登録されていてもよい。この場合、形状認識ステップを省略することができる。 At this time, in the database DB, shape data such as characteristic information is associated with each classification information corresponding to the classification of the object. In this example, the division information is a surface symbol and / or a number corresponding to a surface (hereinafter, also referred to as a surface). Here, the surface means one unit that constitutes an object in three-dimensional CAD data. That is, the surface is obtained by dividing the surface of the object into a plurality of surfaces for convenience in order to grasp the position of each shape on the object, and each of the plurality of surfaces is given a symbol and / or a number. Will be done. In addition, shape data such as characteristic information associated with each classification information may be registered in advance in the database DB. In this case, the shape recognition step can be omitted.
　（形状識別情報判定）
　判定ステップでは、制御部１１０は、表面を複数の面（サーフェス）に区分された対象物における複数の面の形状にそれぞれ対応する複数の形状識別情報（＋１，－１，０）を判定する。 (Shape identification information judgment)
In the determination step, the control unit 110 determines a plurality of shape identification information (+1, -1, 0) corresponding to the shapes of the plurality of surfaces in the object whose surface is divided into a plurality of surfaces (surfaces).
　図３は、対象物の一部の区分情報Ｆ１２の面の一例を示す説明図である。図３に示す面は、後述する図８に示すリブ形状のリブの立ち上がり部分の根元である丸み肉厚部（フィレット）の区分情報Ｆ１２の面を例示している。 FIG. 3 is an explanatory diagram showing an example of the surface of the division information F12 of a part of the object. The surface shown in FIG. 3 illustrates the surface of the classification information F12 of the rounded thick portion (fillet) which is the root of the rising portion of the rib-shaped rib shown in FIG. 8 to be described later.
　データベースＤＢには、各面の情報として、面積ａ１、各面の外形を構成するラインＬ１～Ｌ４及びライン数、それぞれのラインＬ１～Ｌ４の長さ、最大ライン長（この例ではＬ１（またはＬ３）の幅Ｗ）、相当ライン幅（＝面積ａ１／最大ライン長Ｌ１の長さＤ）の各情報が、それぞれの区分情報毎に登録されている。 In the database DB, as information on each surface, the area a1, the lines L1 to L4 and the number of lines constituting the outer shape of each surface, the lengths of the respective lines L1 to L4, and the maximum line length (L1 (or L3 in this example)). ) Width W) and equivalent line width (= area a1 / maximum line length L1 length D) are registered for each classification information.
　ここで、データベースＤＢに登録された一つの面を第１区分情報の第１面（基準面）とし、これに隣接する他の面を第２区分情報の第２面とすると、判定ステップは、第１区分情報の面（基準面）の法線ベクトル（面外ベクトル）と、第１区分情報の面と第２区分情報の面とが接する接線方向のベクトルとにより外積ベクトルを求める外積演算ステップと、求めた外積ベクトルと第２区分情報の面の法線ベクトル（面外ベクトル）との内積を求める内積演算ステップと、内積演算ステップの演算結果に基づいて第１区分情報の面に対する第２区分情報の面の表面形状を判定する判定ステップとを含んでいる。 Here, assuming that one surface registered in the database DB is the first surface (reference surface) of the first division information and the other surface adjacent to this is the second surface of the second division information, the determination step is Cross product calculation step to obtain the outer product vector by the normal vector (out-of-plane vector) of the surface (reference surface) of the first division information and the tangential vector in which the surface of the first division information and the surface of the second division information are in contact with each other. And the inner product calculation step for obtaining the inner product of the obtained outer product vector and the normal vector (outside vector) of the surface of the second division information, and the second for the surface of the first division information based on the calculation result of the inner product calculation step. It includes a determination step of determining the surface shape of the surface of the classification information.
　次に、上記構成の判定ステップによる判定処理について、図４から図６に示す説明図及び図７に示すフローチャートを参照しながら以下に説明する。 Next, the determination process by the determination step of the above configuration will be described below with reference to the explanatory diagrams shown in FIGS. 4 to 6 and the flowchart shown in FIG. 7.
　図４から図６は、形状データ処理装置１００による対象物の判定処理の説明図である。また、図７は、形状データ処理装置１００による対象物の判定処理の手順を示すフローチャートである。 4 to 6 are explanatory views of the object determination process by the shape data processing device 100. Further, FIG. 7 is a flowchart showing a procedure for determining an object by the shape data processing device 100.
　外積演算ステップでは、データベースＤＢに登録された一つの面を第１区分情報Ｆ１の面（基準面）とし、これに隣接する他の区分情報の面を第２区分情報Ｆ２の面として、外積演算を行う（Ｓ１）。ここで、第１区分情報Ｆ１の面（基準面）は、基本的に平面である。外積演算ステップでは、図４から図６に示すように、第１区分情報Ｆ１の面（基準面）の法線ベクトル（面外ベクトル）Ａと、第１区分情報Ｆ１の面と第２区分情報Ｆ２の面とが接する接線方向のベクトルＢとにより外積ベクトルＤを求める。 In the outer product calculation step, one surface registered in the database DB is set as the surface of the first division information F1 (reference surface), and another surface of the other division information adjacent to the surface is used as the surface of the second division information F2. (S1). Here, the plane (reference plane) of the first division information F1 is basically a plane. In the outer product calculation step, as shown in FIGS. 4 to 6, the normal vector (out-of-plane vector) A of the surface (reference surface) of the first division information F1 and the surface and the second division information of the first division information F1. The outer product vector D is obtained from the vector B in the tangential direction in which the surface of F2 is in contact.
　次に、内積演算ステップでは、外積演算ステップで求めた外積ベクトルＤと第２区分情報Ｆ２の面の法線ベクトル（面外ベクトル）Ｃとの内積を求め（Ｓ２）、その演算結果を判定ステップに入力する。 Next, in the inner product calculation step, the inner product of the outer product vector D obtained in the outer product calculation step and the normal vector (outside vector) C of the surface of the second division information F2 is obtained (S2), and the calculation result is determined. Enter in.
　判定ステップでは、入力された演算結果に基づいて第１区分情報Ｆ１の面に対する第２区分情報Ｆ２の面の表面形状を判定する。 In the determination step, the surface shape of the surface of the second division information F2 with respect to the surface of the first division information F1 is determined based on the input calculation result.
　具体的には、演算結果がプラスの値であるか否かを判断し（Ｓ３）、演算結果がプラスの値を示すときには（Ｓ３：Ｙｅｓ）、第２区分情報Ｆ２の面を凹面（図４参照）として形状識別情報（＋１）を判定する（Ｓ４）。一方、演算結果がプラスの値でない場合には（Ｓ３：Ｎｏ）、演算結果がマイナスの値であるか否かを判断し（Ｓ５）、演算結果がマイナスの値を示すときには（Ｓ５：Ｙｅｓ）、第２区分情報Ｆ２の面を凸面（図５参照）として形状識別情報（－１）を判定する（Ｓ６）。また、演算結果がマイナスの値でない場合には（ステップＳ５：Ｎｏ）、演算結果が零の値であるか否かを判断し（Ｓ７）、演算結果が零の値を示すときには（Ｓ７：Ｙｅｓ）、第２区分情報Ｆ２の面を第１区分情報Ｆ１の面に連続する平面（図６参照）であるとして形状識別情報（０）を判定する（Ｓ８）。なお、Ｓ７でもＮｏと判断された場合には、エラー処理（Ｓ１１）を実行してＳ９に移行する。 Specifically, when it is determined whether or not the calculation result is a positive value (S3) and the calculation result shows a positive value (S3: Yes), the surface of the second division information F2 is concave (FIG. 4). (See) to determine the shape identification information (+1) (S4). On the other hand, when the calculation result is not a positive value (S3: No), it is determined whether or not the calculation result is a negative value (S5), and when the calculation result shows a negative value (S5: Yes). , The shape identification information (-1) is determined (S6) by using the surface of the second division information F2 as a convex surface (see FIG. 5). Further, when the calculation result is not a negative value (step S5: No), it is determined whether or not the calculation result is a zero value (S7), and when the calculation result indicates a zero value (S7: Yes). ), The shape identification information (0) is determined on the assumption that the surface of the second division information F2 is a plane continuous with the surface of the first division information F1 (see FIG. 6) (S8). If No is determined even in S7, error processing (S11) is executed to move to S9.
　この後、全ての区分情報の面の処理を終了したか否かを確認し（Ｓ９）、全ての区分情報の面の処理を終了していない場合には（Ｓ９：Ｙｅｓ）、Ｓ１に戻って処理を繰り返す。一方、全ての区分情報の面の処理を終了している場合には（Ｓ９：Ｎｏ）、その時点で表面形状の判定処理を終了する。 After that, it is confirmed whether or not the processing of all the classification information surfaces is completed (S9), and if the processing of all the classification information surfaces is not completed (S9: Yes), the process returns to S1. Repeat the process. On the other hand, when the processing of all the classification information surfaces is completed (S9: No), the surface shape determination processing is completed at that point.
　すなわち、本実施の形態では、上記内積演算の結果、隣り合う面が、基準面からみたときに面内に食い込む面は必ずマイナスの値となり、面外に広がる面は必ずプラスの値となることを利用している。 That is, in the present embodiment, as a result of the inner product calculation, the surface of the adjacent surface that bites into the surface when viewed from the reference surface always has a negative value, and the surface that extends outside the surface always has a positive value. I am using.
　（特性情報取得）
　取得ステップでは、制御部１１０は、複数の面の形状にそれぞれ関係する複数の特性情報を取得する。ここで、特性情報は、形状認識ステップにて認識した特性情報或いは予め登録しておいた特性情報である。特性情報としては、例えば、面（サーフェス）の幅、長さ、曲率、面（サーフェス）内で形状が切り替わる変曲点座標を挙げることができる。 (Acquisition of characteristic information)
In the acquisition step, the control unit 110 acquires a plurality of characteristic information related to the shapes of the plurality of surfaces. Here, the characteristic information is the characteristic information recognized in the shape recognition step or the characteristic information registered in advance. Examples of the characteristic information include the width, length, curvature of the surface (surface), and the coordinates of the inflection point at which the shape is switched within the surface (surface).
　（データベース登録）
　登録ステップでは、制御部１１０は、判定ステップにて判定した形状識別情報（＋１，－１，０）と取得ステップにて取得した特性情報とを区分に対応する区分情報毎に区分に隣接する隣接区分に対応する隣接区分情報と関連付けてデータベースＤＢに登録する。 (Database registration)
In the registration step, the control unit 110 sets the shape identification information (+1, -1, 0) determined in the determination step and the characteristic information acquired in the acquisition step adjacent to each other for each division information corresponding to the division. It is registered in the database DB in association with the adjacent classification information corresponding to the classification.
　詳しくは、登録ステップは、演算結果がプラスの値を示すときの面の形状識別情報を（＋１）、演算結果がマイナスの値を示すときの面の形状識別情報を（－１）、演算結果が零の値を示すときの面の形状識別情報を（０）で分類し、これらの形状識別情報とそれに対応する特性情報とを区分情報毎に隣接区分情報と関連付けてデータベースＤＢに登録する。これにより、以後に実施される検索等の処理において、これらの形状識別情報（＋１，－１，０）の組み合わせにより対象物の形状を抽出（すなわち、特定）することができる。 Specifically, in the registration step, the shape identification information of the surface when the calculation result shows a positive value (+1), the shape identification information of the surface when the calculation result shows a negative value (-1), and the calculation result The shape identification information of the surface when shows a value of zero is classified by (0), and these shape identification information and the corresponding characteristic information are registered in the database DB in association with the adjacent classification information for each classification information. As a result, the shape of the object can be extracted (that is, specified) by the combination of these shape identification information (+1, -1, 0) in the subsequent processing such as search.
　図８は、上記の判定処理を対象物１０の具体的な形状部分に当てはめたときの処理結果を例示している。図８に示す例では、リブ形状に上記の判定処理を当てはめた結果を表しており、リブの立ち上がり部分の根元である丸み肉厚部（フィレット）の面は、内積演算の結果がプラス（＋）、形状識別情報が＋１となり、リブの先端部（端部）の面では、内積演算の結果がマイナス（－）、形状識別情報が－１となっている。 FIG. 8 illustrates the processing result when the above determination processing is applied to the specific shape portion of the object 10. In the example shown in FIG. 8, the result of applying the above determination process to the rib shape is shown, and the result of the inner product calculation is positive (+) on the surface of the rounded thick portion (fillet) which is the base of the rising portion of the rib. ), The shape identification information is +1 and the result of the inner product calculation is minus (−) and the shape identification information is -1 on the surface of the tip (end) of the rib.
　図９は、データベースＤＢにおいて図８に示す対象物１０の一部の形状データ〔区分情報Ｆ１１～Ｆ２２、形状識別情報（＋１，－１，０）、隣接区分情報Ｆ１１～Ｆ２２、特性情報（特性値１～特性値ｎ）（ｎは２以上の整数）〕のデータ構造の一例を概略的に示す図表である。 FIG. 9 shows a part of the shape data of the object 10 shown in FIG. 8 in the database DB [classification information F11 to F22, shape identification information (+1, -1, 0), adjacent classification information F11 to F22, characteristic information (characteristics). It is a chart which shows an example of the data structure of the value 1 to characteristic value n) (n is an integer of 2 or more)].
　図９に示すデータベースＤＢにおいて、例えば、区分情報Ｆ１１には、形状識別情報として－１，＋１，－１，０、隣接区分情報として…，Ｆ１２，Ｆ１８，…、特性値１として幅Ｗ＝２０ｍｍ、特性値２として長さＤ＝１０ｍｍ、特性値３として曲率＝０等が登録されている。以下、Ｆ１２～Ｆ２２も同様に形状データが登録されている。 In the database DB shown in FIG. 9, for example, the classification information F11 has -1, +1, -1,0 as shape identification information, ..., F12, F18, ... As adjacent classification information, and a width W = 20 mm as a characteristic value 1. The length D = 10 mm is registered as the characteristic value 2, the curvature = 0 and the like are registered as the characteristic value 3. Hereinafter, shape data is also registered in F12 to F22 in the same manner.
　（変更受付）
　受付ステップでは、制御部１１０は、形状識別情報（＋１，－１，０）及び／又は特性情報（特性値１～特性値ｎ）を変更するための入力操作を受け付ける。この例では、形状識別情報（＋１，－１，０）及び特性情報（特性値１～特性値ｎ）の変更値を受け付ける。 (Change reception)
In the reception step, the control unit 110 receives an input operation for changing the shape identification information (+1, -1, 0) and / or the characteristic information (characteristic value 1 to characteristic value n). In this example, change values of shape identification information (+1, -1, 0) and characteristic information (characteristic value 1 to characteristic value n) are accepted.
　図１０は、形状識別情報（＋１，－１，０）及び特性情報（特性値１～特性値ｎ）の変更値を入力するための入力画面Ｇの一例を示す模式図である。 FIG. 10 is a schematic diagram showing an example of an input screen G for inputting change values of shape identification information (+1, -1, 0) and characteristic information (characteristic value 1 to characteristic value n).
　図１０に示す例では、入力画面Ｇは、第１入力画面Ｇ１と第２入力画面Ｇ２とに分かれている。第１入力画面Ｇ１では、ユーザーにより区分情報（図示例ではＦ２２）が入力され、ＯＫボタンＢＴ１が操作されると、第２入力画面Ｇ２が表示される。 In the example shown in FIG. 10, the input screen G is divided into a first input screen G1 and a second input screen G2. On the first input screen G1, the classification information (F22 in the illustrated example) is input by the user, and when the OK button BT1 is operated, the second input screen G2 is displayed.
　第２入力画面Ｇ２では、第１入力画面Ｇ１で入力された区分情報（図示例ではＦ２２）に対応する隣接区分情報（図示例ではＦ２１，Ｆ１６，Ｆ１９，Ｆ１２）が表示される。また、第１入力画面Ｇ１で入力された区分情報（図示例ではＦ２２）に対応する形状識別情報（図示例では０，－１，０，－１）及び特性情報（図示例では幅２０ｍｍ、長さ１８ｍｍ、曲率０、…、変曲点座標）が変更入力可能に表示される。ユーザーにより形状識別情報及び特性情報が変更され、ＯＫボタンＢＴ２が操作されると、変更受付処理が終了する。 On the second input screen G2, adjacent classification information (F21, F16, F19, F12 in the illustrated example) corresponding to the classification information (F22 in the illustrated example) input on the first input screen G1 is displayed. In addition, shape identification information (0, -1, 0, -1 in the illustrated example) and characteristic information (width 20 mm, length in the illustrated example) corresponding to the classification information (F22 in the illustrated example) input on the first input screen G1. 18 mm, curvature 0, ..., Inflection point coordinates) are displayed so that they can be changed and input. When the shape identification information and the characteristic information are changed by the user and the OK button BT2 is operated, the change acceptance process ends.
　（形状特定）
　特定ステップでは、制御部１１０は、データベースＤＢに保存した区分情報（Ｆ１１～Ｆ２２）毎の形状識別情報（＋１，－１，０）、特性情報（特性値１～特性値ｎ）及び隣接区分情報（Ｆ１１～Ｆ２２）から区分情報（Ｆ１１～Ｆ２２）と隣接区分情報（Ｆ１１～Ｆ２２）とを繋ぎ合わせて対象物１０の形状を特定する。例えば、区分情報Ｆ２２の面は、幅Ｗが２０ｍｍ、長さＤが１８ｍｍの平面（曲率０）で、区分情報Ｆ２１，Ｆ１９の面とは平面で隣接し、区分情報Ｆ１６，Ｆ１２の面とは凸面で隣接することがわかる。以下、区分情報Ｆ２２に隣接する他の面、区分情報Ｆ１１～Ｆ２１に隣接する全ての面についても同様にして認識処理することで、対象物１０の形状を特定することができる。 (Shape identification)
In the specific step, the control unit 110 receives shape identification information (+1, -1, 0), characteristic information (characteristic value 1 to characteristic value n), and adjacent classification information for each division information (F11 to F22) stored in the database DB. From (F11 to F22), the classification information (F11 to F22) and the adjacent classification information (F11 to F22) are connected to specify the shape of the object 10. For example, the surface of the division information F22 is a plane (curvature 0) having a width W of 20 mm and a length D of 18 mm, is adjacent to the surfaces of the division information F21 and F19 in a plane, and is adjacent to the surfaces of the division information F16 and F12. It can be seen that they are adjacent by a convex surface. Hereinafter, the shape of the object 10 can be specified by performing the recognition processing in the same manner for the other surfaces adjacent to the classification information F22 and all the surfaces adjacent to the classification information F11 to F21.
　そして、特定ステップでは、制御部１１０は、受付ステップにて変更された形状識別情報（＋１，－１，０）及び／又は特性情報（特性値１～特性値ｎ）の変更値により対象物１０の形状を特定する。 Then, in the specific step, the control unit 110 determines the object 10 by changing the shape identification information (+1, -1, 0) and / or the characteristic information (characteristic value 1 to characteristic value n) changed in the reception step. Identify the shape of.
　（情報出力）
　出力ステップでは、制御部１１０は、特定ステップにて特定した対象物１０の形状を表示装置１４１又は印刷装置１４２に出力する。 (Information output)
In the output step, the control unit 110 outputs the shape of the object 10 specified in the specific step to the display device 141 or the printing device 142.
　（本実施の形態について）
　本実施の形態によれば、対象物１０における複数の面の形状にそれぞれ対応する複数の形状識別情報（＋１，－１，０）を判定し、複数の面の形状にそれぞれ関係する複数の特性情報（特性値１～特性値ｎ）を取得し、判定した形状識別情報（＋１，－１，０）と取得した特性情報（特性値１～特性値ｎ）とを区分情報（Ｆ１１～Ｆ２２）毎に隣接区分情報（Ｆ１１～Ｆ２２）と関連付けてデータベースＤＢに登録するので、形状識別情報（＋１，－１，０）及び特性情報（特性値１～特性値ｎ）を区分情報（Ｆ１１～Ｆ２２）毎に対応付けることができる。従って、区分された対象物１０の表面形状がどこの区分のものでどのような形状のものであるかを特定することができ、これにより、ＣＡＤの技術分野に利用することが可能となる。さらに、区分情報（Ｆ１１～Ｆ２２）が隣接区分情報（Ｆ１１～Ｆ２２）と関連付けられているので、区分情報（Ｆ１１～Ｆ２２）と隣接区分情報（Ｆ１１～Ｆ２２）との繋がりを認識することができ、これにより、対象物１０の形状を特定し易くすることができる。しかも、対象物１０がたとえ複雑な形状であっても簡単なデータ構造にすることができ、これにより、制御構成の容易化、ひいては処理速度の高速化を実現させることができる。 (About this embodiment)
According to the present embodiment, a plurality of shape identification information (+1, -1, 0) corresponding to each of the shapes of the plurality of surfaces in the object 10 is determined, and a plurality of characteristics related to the shapes of the plurality of surfaces are obtained. Information (characteristic value 1 to characteristic value n) is acquired, and the determined shape identification information (+1, -1, 0) and the acquired characteristic information (characteristic value 1 to characteristic value n) are classified into classification information (F11 to F22). Since each is registered in the database DB in association with the adjacent classification information (F11 to F22), the shape identification information (+1, -1, 0) and the characteristic information (characteristic value 1 to characteristic value n) are stored in the classification information (F11 to F22). ) Can be associated with each other. Therefore, it is possible to specify which category and what shape the surface shape of the segmented object 10 is, which makes it possible to use it in the technical field of CAD. Further, since the classification information (F11 to F22) is associated with the adjacent classification information (F11 to F22), the connection between the classification information (F11 to F22) and the adjacent classification information (F11 to F22) can be recognized. As a result, the shape of the object 10 can be easily specified. Moreover, even if the object 10 has a complicated shape, it can have a simple data structure, which makes it possible to simplify the control configuration and, by extension, increase the processing speed.
　本実施の形態において、制御部１１０は、データベースＤＢに保存した区分情報（Ｆ１１～Ｆ２２）毎の形状識別情報（＋１，－１，０）、特性情報（特性値１～特性値ｎ）及び隣接区分情報（Ｆ１１～Ｆ２２）から区分情報（Ｆ１１～Ｆ２２）と隣接区分情報（Ｆ１１～Ｆ２２）とを繋ぎ合わせて対象物１０の形状を特定し、特定した対象物１０の形状を出力する。こうすることで、ユーザーは、データベースＤＢに保存した区分情報（Ｆ１１～Ｆ２２）毎の形状識別情報（＋１，－１，０）、特性情報（特性値１～特性値ｎ）及び隣接区分情報（Ｆ１１～Ｆ２２）から出力した対象物１０の形状を確認することができる。 In the present embodiment, the control unit 110 includes shape identification information (+1, -1, 0), characteristic information (characteristic value 1 to characteristic value n), and adjacent to each division information (F11 to F22) stored in the database DB. The shape of the object 10 is specified by connecting the classification information (F11 to F22) and the adjacent classification information (F11 to F22) from the classification information (F11 to F22), and the shape of the specified target 10 is output. By doing so, the user can use the shape identification information (+1, -1,0), the characteristic information (characteristic value 1 to the characteristic value n), and the adjacent classification information (characteristic value 1 to characteristic value n) for each division information (F11 to F22) stored in the database DB. The shape of the object 10 output from F11 to F22) can be confirmed.
　ところで、現状の対象物１０から新しい対象物を設計する（いわゆるモデルチェンジする）場合、現状の対象物１０の形状及び／又は形状の特性を容易に変更して新しい対象物を設計することが望まれている。 By the way, when designing a new object from the current object 10 (so-called model change), it is desired to design a new object by easily changing the shape and / or shape characteristics of the current object 10. It is rare.
　この点、本実施の形態において、制御部１１０は、形状識別情報（＋１，－１，０）及び／又は特性情報（特性値１～特性値ｎ）を変更するための入力操作を受け付け、変更した形状識別情報（＋１，－１，０）及び／又は特性情報（特性値１～特性値ｎ）の変更値により対象物１０の形状を特定する。こうすることで、現状の対象物１０の形状及び／又は特性を容易に変更して新しい対象物を容易に設計することができる。 In this regard, in the present embodiment, the control unit 110 accepts and changes the input operation for changing the shape identification information (+1, -1, 0) and / or the characteristic information (characteristic value 1 to characteristic value n). The shape of the object 10 is specified by the changed value of the shape identification information (+1, -1, 0) and / or the characteristic information (characteristic value 1 to characteristic value n). By doing so, it is possible to easily change the shape and / or characteristics of the current object 10 and easily design a new object.
　本実施の形態において、制御部１１０は、区分情報（Ｆ１１～Ｆ２２）に対して複数に分けて処理する複数のプロセッサーを備えていてもよい。この場合、制御部１１０は、複数のプロセッサーにより並列処理を行うことができる。例えば、区分情報Ｆ１１～Ｆ１４に対して第１プロセッサー、区分情報Ｆ１５～Ｆ１８に対して第２プロセッサー、区分情報Ｆ１９～Ｆ１２に対して第３プロセッサーをそれぞれ割り当て、第１プロセッサー、第２プロセッサー及び第３プロセッサーにより並列処理を行うことができる。こうすることで、容易に並列処理を行うことができ、これにより、簡単な制御構成で、さらなる高速処理を実現させることができる。 In the present embodiment, the control unit 110 may include a plurality of processors that separately process the classification information (F11 to F22). In this case, the control unit 110 can perform parallel processing by a plurality of processors. For example, the first processor is assigned to the division information F11 to F14, the second processor is assigned to the division information F15 to F18, and the third processor is assigned to the division information F19 to F12, respectively, and the first processor, the second processor, and the second processor are assigned. Parallel processing can be performed by 3 processors. By doing so, parallel processing can be easily performed, and thereby, further high-speed processing can be realized with a simple control configuration.
　本発明は、以上説明した実施の形態に限定されるものではなく、他のいろいろな形で実施することができる。そのため、かかる実施の形態はあらゆる点で単なる例示にすぎず、限定的に解釈してはならない。本発明の範囲は請求の範囲によって示すものであって、明細書本文には、なんら拘束されない。さらに、請求の範囲の均等範囲に属する変形や変更は、全て本発明の範囲内のものである。 The present invention is not limited to the embodiments described above, and can be implemented in various other forms. Therefore, such embodiments are merely exemplary in all respects and should not be construed in a limited way. The scope of the present invention is shown by the claims and is not bound by the text of the specification. Furthermore, all modifications and modifications that fall within the equivalent scope of the claims are within the scope of the present invention.
　本発明は、３次元の形状データを１次元の形状データに変換する技術に係るものであり、特に、ＣＡＤの技術分野に適用することができる。 The present invention relates to a technique for converting three-dimensional shape data into one-dimensional shape data, and can be particularly applied to the technical field of CAD.
１０　　　　　　対象物
１００　　　　　形状データ処理装置
１１０　　　　　制御部
１２０　　　　　記憶部
１２１　　　　　記録装置
１２２　　　　　メモリ装置
１３０　　　　　読取部
１３１　　　　　読取装置
１４０　　　　　出力部
１４１　　　　　表示装置
１４２　　　　　印刷装置
ＢＴ１　　　　　ＯＫボタン
ＢＴ２　　　　　ＯＫボタン
ＤＢ　　　　　　データベース
Ｆ１　　　　　　第１区分情報
Ｆ２　　　　　　第２区分情報
Ｆ１１～Ｆ２２　区分情報
Ｇ　　　　　　　入力画面
Ｇ１　　　　　　第１入力画面
Ｇ２　　　　　　第２入力画面
Ｍ　　　　　　　記録媒体
Ｐ　　　　　　　形状データ処理プログラム
Ｑ１　　　　　　３次元ＣＡＤデータ入力手段
Ｑ２　　　　　　形状認識手段
Ｑ３　　　　　　判定手段
Ｑ４　　　　　　取得手段
Ｑ５　　　　　　登録手段
Ｑ６　　　　　　受付手段
Ｑ７　　　　　　特定手段
Ｑ８　　　　　　出力手段 10 Object 100 Shape data processing device 110 Control unit 120 Storage unit 121 Recording device 122 Memory device 130 Reading unit 131 Reading device 140 Output unit 141 Display device 142 Printing device BT1 OK button BT2 OK button DB Database F1 First division information F2 2 Classification information F11 to F22 Classification information G Input screen G1 First input screen G2 Second input screen M Recording medium P Shape data processing program Q1 Three-dimensional CAD data input means Q2 Shape recognition means Q3 Judgment means Q4 Acquisition means Q5 Registration means Q6 Reception means Q7 Specific means Q8 Output means

Claims (6)

  1. 　表面を複数の面に区分された対象物における前記複数の面の形状にそれぞれ対応する複数の形状識別情報を判定する判定手段と、
    　前記複数の面の形状にそれぞれ関係する複数の特性情報を取得する取得手段と、
    　前記判定手段にて判定した前記形状識別情報と前記取得手段にて取得した前記特性情報とを前記区分に対応する区分情報毎に前記区分に隣接する隣接区分に対応する隣接区分情報と関連付けてデータベースに登録する登録手段と
    　を備えることを特徴とする形状データ処理装置。     A determination means for determining a plurality of shape identification information corresponding to each of the shapes of the plurality of surfaces in an object whose surface is divided into a plurality of surfaces.
    An acquisition means for acquiring a plurality of characteristic information related to the shapes of the plurality of surfaces, and
    A database in which the shape identification information determined by the determination means and the characteristic information acquired by the acquisition means are associated with the adjacent division information corresponding to the adjacent division adjacent to the division for each division information corresponding to the division. A shape data processing device comprising a registration means for registering in.
  2. 　請求項１に記載の形状データ処理装置であって、
    　前記データベースに保存した前記区分情報毎の前記形状識別情報、前記特性情報及び前記隣接区分情報から前記区分情報と前記隣接区分情報とを繋ぎ合わせて前記対象物の形状を特定する特定手段と、
    　前記特定手段にて特定した前記対象物の形状を出力する出力手段と
    　をさらに備えることを特徴とする形状データ処理装置。     The shape data processing apparatus according to claim 1.
    A specific means for identifying the shape of the object by connecting the classification information and the adjacent classification information from the shape identification information, the characteristic information, and the adjacent classification information for each of the classification information stored in the database.
    A shape data processing apparatus further comprising an output means for outputting the shape of the object specified by the specific means.
  3. 　請求項２に記載の形状データ処理装置であって、
    　前記形状識別情報及び／又は前記特性情報を変更するための入力操作を受け付ける受付手段をさらに備え、
    　前記特定手段は、前記受付手段にて変更された前記形状識別情報及び／又は前記特性情報の変更値により前記対象物の形状を特定することを特徴とする形状データ処理装置。     The shape data processing apparatus according to claim 2.
    Further provided with a receiving means for receiving an input operation for changing the shape identification information and / or the characteristic information.
    The specific means is a shape data processing device characterized in that the shape of the object is specified by the shape identification information and / or the changed value of the characteristic information changed by the reception means.
  4. 　請求項１から請求項３までの何れか１つに記載の形状データ処理装置であって、
    　前記区分情報に対して複数に分けて処理する複数のプロセッサーを備え、
    　前記複数のプロセッサーにより並列処理を行うことを特徴とする形状データ処理装置。     The shape data processing apparatus according to any one of claims 1 to 3.
    It is provided with a plurality of processors that process the classification information in a plurality of divisions.
    A shape data processing apparatus characterized in that parallel processing is performed by the plurality of processors.
  5. 　表面を複数の面に区分された対象物における前記複数の面の形状にそれぞれ対応する複数の形状識別情報を判定する判定ステップと、
    　前記複数の面の形状にそれぞれ関係する複数の特性情報を取得する取得ステップと、
    　前記判定ステップにて判定した前記形状識別情報と前記取得ステップにて取得した前記特性情報とを前記区分に対応する区分情報毎に前記区分に隣接する隣接区分に対応する隣接区分情報と関連付けてデータベースに登録する登録ステップと
    　を含むことを特徴とする形状データ処理方法。     A determination step for determining a plurality of shape identification information corresponding to each of the shapes of the plurality of surfaces in an object whose surface is divided into a plurality of surfaces.
    An acquisition step for acquiring a plurality of characteristic information related to the shapes of the plurality of surfaces, and
    A database in which the shape identification information determined in the determination step and the characteristic information acquired in the acquisition step are associated with the adjacent division information corresponding to the adjacent division adjacent to the division for each division information corresponding to the division. A shape data processing method characterized by including a registration step to be registered in.
  6. 　請求項５に記載の形状データ処理方法の各ステップを、コンピュータに実行させるための形状データ処理プログラム。 A shape data processing program for causing a computer to execute each step of the shape data processing method according to claim 5.
PCT/JP2019/030822 2019-08-06 2019-08-06 Shape data processing device, shape data processing method, and shape data processing program WO2021024367A1 (en)

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WO2017175349A1 (en) * 2016-04-07 2017-10-12 インテグラル・テクノロジー株式会社 Surface shape determination device, surface shape determination method and surface shape determination program

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