JP6520742B2 - High design method, high design device and program - Google Patents

Description

  The present invention relates to a method for enhancing design, a device for enhancing design, and a program for enhancing design of measurement data of an object to be measured.

  There is known an apparatus for measuring an object to be measured, generating measurement mesh data of an object to be measured composed of a plurality of polygons, and evaluating the stripe pattern quality by the light flux (for example, see Patent Document 1). .

JP 2008-292365 A

  In the measured mesh data, although the streak pattern quality of the light flux is improved by the smoothing process or the like in the flat portion having a small shape change, the streak pattern quality of the light flux may be deteriorated in the fillet portion having a large shape change.

  The present invention has been made to solve such problems, and provides a method for enhancing design, a device for enhancing design, and a program capable of improving the streak pattern quality of light flux in a fillet portion having a large shape change. The main purpose is to provide

In one aspect of the present invention for achieving the above object, there is provided a step of acquiring three-dimensional measurement data of an object to be measured, and a measurement mesh in which the three-dimensional measurement data of the object to be measured is composed of a plurality of polygons. A step of converting into data, a step of extracting a fillet having a shape change from the converted measurement mesh data, a fillet of the measurement mesh data, and a three-dimensional model showing the shape of the object to be measured And replacing the closed region mesh data corresponding to the fillet portion in the data.
In this one aspect, the replacing step is a step of extracting a closed region similar to the shape of the fillet portion of the measurement mesh data from the model data, and a vertex of the closed region of the extracted model data is latticed. Arranging and connecting the vertices of the grid with a line to generate closed area mesh data; a vertex on the measurement mesh data overlapping the generated closed area mesh data and a polygon including the vertex, The method may include the steps of deleting from the measurement mesh data, and combining the measurement mesh data from which the vertices and polygons have been deleted and the closed region mesh data.
One aspect of the present invention for achieving the above object is a data acquisition unit for acquiring three-dimensional measurement data of an object to be measured, and a plurality of polygons for three-dimensional measurement data of the object to be measured acquired by the data acquisition unit. And a fillet extraction unit for extracting a fillet having a shape change from the measurement mesh data converted by the data conversion unit, and a fillet extraction unit for the measurement mesh data And a replacement means for replacing the closed region mesh data corresponding to the fillet portion in the three-dimensional model data indicating the shape of the object to be measured. Good.
In this one aspect, the replacement means extracts closed area extraction means for extracting from the model data a closed area similar to the shape of the fillet part of the measurement mesh data extracted by the fillet extraction means, and the closed area extraction Mesh generation means for arranging the apexes in a lattice form with respect to the closed area of the model data extracted by the means and connecting the apexes of the lattice shape with diagonals to generate closed area mesh data; and the mesh generation means Data deletion means for deleting from the measurement mesh data the vertices on the measurement mesh data overlapping the closed region mesh data and the polygon including the vertices from the measurement mesh data; and measurement mesh data for which the vertices and polygons have been deleted by the data deletion means And the closed area mesh data generated by the mesh generation means And over data coupling means may comprise a.
One aspect of the present invention for achieving the above object is a process of acquiring three-dimensional measurement data of an object to be measured, and a measurement mesh in which the three-dimensional measurement data of the object to be measured is composed of a plurality of polygons. A process of converting data into data, a process of extracting a fillet having a shape change from the converted measurement mesh data, and a closed area similar to the shape of the fillet of the measurement mesh data of the measurement object A process of extracting from three-dimensional model data representing a shape, a fillet portion of the measurement mesh data, and closed region mesh data corresponding to the fillet portion in the three-dimensional model data representing the shape of the object to be measured The program may be a program that causes a computer to execute replacement processing.

  According to the present invention, it is possible to provide a method for enhancing design, a device for enhancing design, and a program capable of improving the stripe pattern quality of light flux in a fillet portion having a large shape change.

It is a figure for demonstrating the high design-ized apparatus which concerns on one Embodiment of this invention. It is a block diagram showing a schematic system configuration of a high-designing device according to an embodiment of the present invention. (A) It is a figure for demonstrating the method to replace the fillet part of measurement mesh data with the mesh data of the fillet corresponding area | region of model data. (B) It is a figure for demonstrating the method to replace the fillet part of measurement mesh data with the mesh data of the fillet corresponding area | region of model data. (C) It is a figure for demonstrating the method to replace the fillet part of measurement mesh data with the mesh data of the fillet corresponding area | region of model data. (D) It is a figure for demonstrating the method to replace the fillet part of measurement mesh data with the mesh data of the fillet corresponding area | region of model data. (E) It is a figure for demonstrating the method to replace the fillet part of measurement mesh data with the mesh data of the fillet corresponding area | region of model data. (F) It is a figure for demonstrating the method to replace the fillet part of measurement mesh data with the mesh data of the fillet corresponding area | region of model data. (G) It is a figure for demonstrating the method to replace the fillet part of measurement mesh data with the mesh data of the fillet corresponding area | region of model data. It is a figure which shows an example of the stripe pattern quality of a favorable light beam. It is a flowchart which shows the processing flow of the method for high design-ization based on one Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIG. 1, for example, when the first mold of an automobile part or the like is completed, mold measurement is performed using a three-dimensional measuring device, and three-dimensional measurement data of the first mold composed of three-dimensional point groups ( Subsequently, three-dimensional point cloud data is acquired (1). Next, the acquired three-dimensional point group data is converted by the computer into measurement mesh data composed of a plurality of polygons (2). The converted measurement mesh data is edited using CAD (computer aided design) / CAM (computer aided manufacturing) or the like to generate processing data (3). Then, machining is performed using this processing data to produce a second mold (4).

By the way, the measurement mesh data includes a measurement error, and further has a fillet portion. The fillet portion has a large shape change, and the grid points of the measurement mesh data are irregularly arranged. For this reason, conventionally, even if the smoothing process or the like is performed (5), there is a possibility that the streak pattern quality of light flux in the highlight inspection may be deteriorated (6).
In the highlight inspection, a striped light flux formed on the surface of the evaluation object, obtained by collimating light rays emitted from a light source such as a fluorescent lamp and irradiating the object via a slit or the like. The surface shape of the evaluation object is inspected according to the flow condition (striped pattern) of the above.

  On the other hand, in the design enhancement apparatus of the present invention, the fillet portion of the measurement mesh data of the object to be measured is aligned with the lattice point corresponding to the fillet corresponding region of the model data of the object to be measured. And replace it with the closed area mesh data generated and placed (7). As a result, it is possible to improve the stripe pattern quality of the light flux even in the fillet portion having a large shape change (8).

FIG. 2 is a block diagram showing a schematic system configuration of the high-designing apparatus according to an embodiment of the present invention.
As described above, the high-designing apparatus 1 according to the present embodiment is to improve the streak pattern quality of the light flux and to design the measurement data of the object to be measured. The high-designing apparatus 1 includes a data acquisition unit 2 for acquiring three-dimensional measurement data of an object, a storage unit 3 for storing model data of the object, and data for converting three-dimensional measurement data of the object A converter 4, a fillet extraction unit 5 for extracting a fillet portion, a closed area extraction unit 6 for extracting a closed area of model data, a mesh generation unit 7 for generating closed area mesh data, and vertices on measurement mesh data A data deleting unit 8 for deleting polygons, a data combining unit 9 for combining measurement mesh data and closed area mesh data, a smoothing unit 10 for performing smoothing processing, and a display unit 11 for displaying a computer model; Equipped with

  The high-designing apparatus 1 includes, for example, a central processing unit (CPU) that performs arithmetic processing and the like, and a read only memory (ROM) and a random access memory (RAM) in which arithmetic programs and the like executed by the CPU are stored. The hardware is configured centering on a microcomputer including a memory, an interface unit (I / F) that performs input and output of signals with the outside, and the like. The CPU, the memory, and the interface unit are mutually connected via a data bus and the like.

  The data acquisition unit 2 is an example of a data acquisition unit. The data acquisition unit 2 three-dimensionally measures an object to be measured such as a mold or part using, for example, a three-dimensional measurement device such as a three-dimensional digitizer, and is configured by three-dimensional point groups (a plurality of measurement groups) 3D measurement data (hereinafter referred to as 3D point cloud data). The data acquisition unit 2 may acquire three-dimensional measurement data stored in advance in the storage unit 3.

The data acquisition unit 2 stores the acquired three-dimensional point cloud data in the storage unit 3. The data acquisition unit 2 may output the acquired three-dimensional measurement data to the data conversion unit 4.
The storage unit 3 is configured of, for example, the memory. The storage unit 3 stores in advance, for example, three-dimensional model data indicating the shapes of a plurality of objects to be measured.

  The data conversion unit 4 is an example of data conversion means. The data conversion unit 4 converts the three-dimensional measurement data of the object to be measured stored in the storage unit 3 into measurement mesh data composed of a plurality of polygons. Here, a polygon is an elementary surface connecting at least three or more vertices, and is, for example, a triangular plane or a rectangular plane.

  The fillet extraction unit 5 is an example of a fillet extraction unit. The fillet extraction unit 5 extracts a fillet portion having a large shape change from the measurement mesh data converted by the data conversion unit 4. The fillet extraction unit 5 extracts a fillet portion having a large shape change from the measurement mesh data in accordance with the user's selection instruction. The fillet extraction unit 5 may automatically extract a fillet portion having a large shape change based on the curved surface shape (curvature and the like) of the measurement mesh data.

  The closed area extraction unit 6 is an example of a closed area extraction unit. The closed region extraction unit 6 acquires model data of the object to be measured from the storage unit 3. The closed region extraction unit 6 extracts a closed region (a region based on a surface or a line model, a region corresponding to a fillet) similar to the shape of the fillet portion of the measurement mesh data extracted by the fillet extraction portion 5 from model data of the object to be measured Do. The closed region extraction unit 6 extracts, for example, a closed region having a shape that covers the center or the entire shape of the fillet portion of the measurement mesh data extracted by the fillet extraction unit 5 from the model data of the object to be measured (see FIG. 3 (A).

The mesh generation unit 7 is an example of mesh generation means. In the closed region of the model data extracted by the closed region extraction unit 6, the mesh generation unit 7 cross-sectional direction (longitudinal direction in FIG. 3B) and pass direction (horizontal direction in FIG. 3B) of the fillet portion. Arrange the vertices in a grid on. The mesh generation unit 7 generates closed area mesh data composed of polygons of a plurality of triangle planes by connecting adjacent ones of the lattice-like vertices and adjacent vertices located diagonally with a line. (FIG. 3 (C)). The closed area mesh data generated in this manner has a high streak quality of light flux.
It is preferable that the mesh generation unit 7 generate closed area mesh data by connecting the vertices located at diagonals with diagonal lines in the same direction. This further improves the streaking quality of the ray bundle.

  The mesh generation unit 7 generates closed area mesh data composed of polygons of a plurality of quadrilateral planes including free curved surfaces by connecting adjacent ones of the lattice-like vertices with a line. Good. In this case, the data acquisition unit 2 acquires three-dimensional measurement data composed of more three-dimensional point groups.

  The data deletion unit 8 is an example of data deletion means. The data deletion unit 8 projects the closed area mesh data generated by the mesh generation unit 7 on the measurement mesh data converted by the data conversion unit 4 (FIG. 3 (D)). Then, the data deleting unit 8 determines a vertex including the vertex on the measurement mesh data overlapping the closed region mesh data and the polygon (FIG. 3E). The data deleting unit 8 deletes vertices and polygons determined to overlap from the measurement mesh data (FIG. 3 (F)).

  The data combining unit 9 is an example of the data combining unit. The data combining unit 9 combines, for example, the measurement mesh data from which the vertices and polygons have been deleted by the data deleting unit 8 using the Delaunay division method and the closed area mesh data generated by the mesh generating unit 7. (FIG. 3 (G)). By performing the processing of FIG. 3 (A) to (G) described above, the fillet portion of the measurement mesh data of the object to be measured is made to the fillet corresponding region of the model data of the object to be measured which has high stripe pattern quality of light flux. The grid points can be replaced with mesh data generated by arranging and arranging them.

  The smoothing unit 10 performs a smoothing process on the entire mesh data (computer model) combined by the data combining unit 9. By the above, for example, as shown in FIG. 4, it is possible to obtain mesh data with good streak pattern quality of light flux. The smoothing unit 10 outputs the computer model subjected to the smoothing process to the storage unit 3 and the display unit 11.

  The display unit 11 displays the computer model smoothed by the smoothing unit 10. The display unit 11 is, for example, a liquid crystal display device, an organic EL display device, or the like.

FIG. 5 is a flow chart showing the processing flow of the method for enhancing design according to the present embodiment.
The data acquisition unit 2 three-dimensionally measures the object to be measured, and acquires three-dimensional point cloud data (step S101).

The data conversion unit 4 converts the three-dimensional point group data of the object to be measured acquired by the data acquisition unit 2 into measurement mesh data composed of a plurality of polygons (step S102).
The fillet extraction unit 5 extracts a fillet portion having a large shape change from the measurement mesh data converted by the data conversion unit 4 (step S103).

The closed region extraction unit 6 extracts a closed region similar to the shape of the fillet portion of the measurement mesh data extracted by the fillet extraction unit 5 from the model data of the object to be measured (step S104).
The mesh generation unit 7 arranges and arranges the vertexes in the form of a grid with respect to the closed region of the model data extracted by the closed region extraction unit 6 (step S105). The mesh generation unit 7 generates closed area mesh data composed of polygons of a plurality of triangle planes by connecting adjacent ones of the lattice-like vertices and adjacent vertices located diagonally with a line. (Step S106).

The data deleting unit 8 deletes the vertex on the measurement mesh data overlapping the closed region mesh data and the polygon including the vertex from the measurement mesh data (step S107).
The data combining unit 9 combines the measurement mesh data in which the vertex and the polygon are deleted by the data deleting unit 8 with the closed area mesh data generated by the mesh generating unit 7 using the Delaunay division method or the like (Step S108).

  The smoothing unit 10 performs a smoothing process on the entire mesh data (computer model) combined by the data combining unit 9 (step S109).

As described above, in the present embodiment, three-dimensional measurement data of the object to be measured is acquired, and the acquired three-dimensional measurement data of the object to be measured is converted into measurement mesh data formed of a plurality of polygons. A fillet portion having a large shape change is extracted from the measurement mesh data, and a closed region similar to the shape of the fillet portion of the measurement mesh data is extracted from three-dimensional model data indicating the shape of the object to be measured. The vertices are arranged in a lattice form in the closed area of the extracted model data, and the vertices of the lattice are connected by lines to generate closed area mesh data, and the vertices on the measurement mesh data overlapping the closed area mesh data and the apexes Is deleted from the measurement mesh data, and the measurement mesh data from which the vertex and the polygon are deleted is combined with the closed area mesh data.
Thereby, the fillet portion of the measurement mesh data of the object to be measured is replaced with the mesh data generated by aligning and arranging the grid points in the fillet corresponding region of the model data of the object to be measured which has high stripe pattern quality of light flux. be able to. Therefore, it is possible to improve the stripe pattern quality of light flux in the fillet portion having a large shape change.
The present invention is not limited to the above embodiment, and can be appropriately modified without departing from the scope of the present invention.

  The present invention can also realize, for example, the process shown in FIG. 5 by causing a CPU to execute a computer program.

  The programs can be stored and provided to a computer using various types of non-transitory computer readable media. Non-transitory computer readable media include tangible storage media of various types. Examples of non-transitory computer readable media are magnetic recording media (eg flexible disk, magnetic tape, hard disk drive), magneto-optical recording media (eg magneto-optical disk), CD-ROM (Read Only Memory), CD-R, CD-R / W, semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (random access memory)) are included.

  Also, the programs may be supplied to the computer by various types of transitory computer readable media. Examples of temporary computer readable media include electrical signals, light signals, and electromagnetic waves. The temporary computer readable medium can provide the program to the computer via a wired communication path such as electric wire and optical fiber, or a wireless communication path.

  Reference Signs List 1 design enhancement apparatus, 2 data acquisition unit, 3 storage unit, 4 data conversion unit, 5 fillet extraction unit, 6 closed region extraction unit, 7 mesh generation unit, 8 data deletion unit, 9 data combination unit, 10 smoothing unit , 11 display unit

Claims (5)

Acquiring three-dimensional measurement data of an object to be measured;
Converting the acquired three-dimensional measurement data of the measured object into measurement mesh data composed of a plurality of polygons;
Extracting a fillet portion having a shape change from the converted measurement mesh data;
Replacing the fillet portion of the measurement mesh data with closed region mesh data corresponding to the fillet portion in three-dimensional model data indicating the shape of the object to be measured;
A method of enhancing the design, characterized in that A method for enhancing design according to claim 1, wherein
The replacing step is
Extracting a closed region similar to the shape of the fillet portion of the measurement mesh data from the model data;
Arranging vertices in a lattice form in a closed region of the extracted model data, connecting the vertices of the lattice shape with a line to generate closed region mesh data;
Deleting a vertex on the measurement mesh data overlapping with the generated closed region mesh data and a polygon including the vertex from the measurement mesh data;
Combining the measurement mesh data from which the vertices and polygons have been deleted and the closed area mesh data;
A method of enhancing the design, characterized in that Data acquisition means for acquiring three-dimensional measurement data of an object to be measured;
Data conversion means for converting three-dimensional measurement data of the object to be measured acquired by the data acquisition means into measurement mesh data composed of a plurality of polygons;
Fillet extraction means for extracting a fillet portion having a shape change from the measurement mesh data converted by the data conversion means;
Replacement means for replacing the fillet portion of the measurement mesh data with closed region mesh data corresponding to the fillet portion in three-dimensional model data indicating the shape of the object to be measured;
An apparatus for enhancing design, comprising: The high design apparatus according to claim 3, wherein
The substitution means is
Closed area extraction means for extracting from the model data a closed area similar to the shape of the fillet portion of the measurement mesh data extracted by the fillet extraction means;
Mesh generation means for arranging vertices in a lattice form with respect to closed regions of the model data extracted by the closed region extraction means, and connecting closed vertices of the lattice shape with diagonal lines to generate closed region mesh data;
Data deleting means for deleting a vertex on the measurement mesh data overlapping with the closed area mesh data generated by the mesh generation means and a polygon including the vertex from the measurement mesh data;
Data combining means for combining the measurement mesh data from which the vertices and polygons have been deleted by the data deleting means, and the closed area mesh data generated by the mesh generation means;
An apparatus for enhancing design, comprising: A process of acquiring three-dimensional measurement data of an object to be measured;
A process of converting the acquired three-dimensional measurement data of the measured object into measurement mesh data composed of a plurality of polygons;
A process of extracting a fillet portion having a shape change from the converted measurement mesh data;
A process of extracting a closed region similar to the shape of the fillet portion of the measurement mesh data from three-dimensional model data indicating the shape of the object to be measured;
A process of replacing the fillet portion of the measurement mesh data with closed region mesh data corresponding to the fillet portion in three-dimensional model data indicating the shape of the object to be measured;
A program that causes a computer to execute.