Modeling support system, modeling support method, and modeling support program

Patent metadata

Field	Value
Publication number	US-11520945-B2
Application number	US-201616069278-A
Country	US
Kind code	B2
Filing date	Dec 7, 2016
Priority date	Jan 13, 2016
Publication date	Dec 6, 2022
Grant date	Dec 6, 2022

Abstract

A modeling support system stores a combination of a CAD model and a mesh model corresponding to the CAD model; recognizes a shape indicated by the CAD model; and classifies respective parts of the stored CAD model into one of a plurality of groups. The modeling support system also specifies component parts of an input CAD model and specifies groups corresponding to the specified component parts from the specified groups. A similar-shape-model search unit searches and obtains the part of the CAD model having a shape most similar to the shape indicated by the specified component part, from the part of the CAD model in the specified groups. Further, a mesh model generating unit obtains a mesh model corresponding to the obtained part of the CAD model, from the stored mesh model, and generates a new mesh model.

First claim

What is claimed is:

1. A modeling support system comprising:
a processor;
a display coupled to the processor; and
a memory coupled the processor, the memory storing instructions that when executed by the processor configure the processor to:
store combinations of first Computer Aided Design (CAD) models and corresponding first mesh models, the first CAD models respectively indicating shapes of a tangible object,
recognize a plurality of shapes of parts of the tangible object respectively indicated by the first CAD models,
classify each of the parts of the stored first CAD models into one of a plurality of first groups based on the recognized shapes, each first group having at least two of the parts,
display, on the display via a CAD interface, each of the at least two of the parts of the plurality of first groups,
receive an input of a CAD model,

specify component parts of the input CAD model, and specify respective groups corresponding to the specified component parts of the input CAD model from among the specified first groups of the parts from the first CAD models,
display, on the display via the CAD interface, the specified component parts of the input CAD model and the input CAD model,
search and obtain a part of the first CAD models having a shape determined to be most similar to the shape indicated by the specified component part of the input CAD model, from among the parts of the first CAD models in the specified first groups and obtain a second CAD model based on the obtained part of the first CAD models,
obtain a mesh model corresponding to the obtained second CAD model, from among the stored first mesh models, and generate a new mesh model corresponding to the input CAD model using the obtained mesh model,
output the classified CAD model part and the new mesh model generated using the obtained part of the second CAD model, and
display, on the display via the CAD interface, the generated new mesh model.

2. The modeling support system according to claim 1 ,
wherein the processor is configured to recognize shapes of the parts of the stored first CAD models and set the parts of the first CAD models determined to have a shape similar to each other to the same group, thereby classifying the stored parts of the CAD model into one of the plurality of groups.

3. The modeling support system according to claim 1 ,
wherein the processor is configured to classify the parts of the first CAD models classified into the group into a third CAD model representing the group and the other parts of the first CAD models belonging to the representative part of the first CAD models.

4. The modeling support system according to claim 1 ,
wherein the processor is configured to specify the shape of the component part of the input CAD model, and further specify the group to which the first CAD models including the specified shape belongs as a group corresponding to the specified component part among the classified groups.

5. The modeling support system according to claim 1 ,
wherein the mesh model is a first mesh model,
wherein the processor is configured to generate a second mesh model corresponding to the specified component part when the parts of the first CAD models indicating the most similar shape are not obtained, and
generate the new mesh model using the generated second mesh model and the obtained first mesh model.

6. The modeling support system according to claim 1 ,
wherein the processor is configured to determine whether the plurality of parts of the first CAD models satisfy a predetermined relation and classify only the CAD model part selected from the plurality of parts of the first CAD models into one of the plurality of groups upon classifying the parts of the first CAD models.

7. The modeling support system according to claim 6 ,
wherein the processor is configured to when determining that a quality of a first part of the first CAD model is higher than that of a second part of the first CAD models or a quality of a mesh model corresponding to the first part of the first CAD models is higher than that of a mesh model corresponding to the second part of the second CAD model, select the first part of the first CAD models and classifies the first part of the first CAD models into one of the plurality of groups.

8. The modeling support system according to claim 6 ,
wherein the processor is configured to receive an input of the relation from a user and classifies the selected part of the first CAD models into one of the plurality of groups according to contents of the received relation.

9. The modeling support system according to claim 1 ,
wherein the mesh model is a first mesh model,
wherein the processor is configured to: generate a second mesh model corresponding to the specified component part when the parts of the first CAD models indicating the most similar shape are not obtained,
determine whether the plurality of parts of the first CAD models satisfy a predetermined relation exist and classifies only the part of the CAD model selected from the plurality of parts of the first CAD models into one of the plurality of groups when the parts of the first CAD models are classified,
recognize shapes of the parts of the stored first CAD models and set the parts of the first CAD models determined to have a shape similar to each other to the same group, thereby classifying the stored parts of the CAD model into one of the plurality of groups,
classify the parts of the first CAD models classified into the group into a third CAD model representing the group and the other parts of the first CAD models belonging to the representative part of the first CAD models,
specify the shape of the component part of the input CAD model, and further specify the group to which the first CAD models including the specified shape belongs as a group corresponding to the specified component part among the classified groups,
generate the new mesh model using the generated second mesh model and the obtained first mesh model,
upon determining that a quality of a first part of the first CAD model is higher than that of a second part of the first CAD models or a quality of a mesh model corresponding to the first part of the first CAD models is higher than that of a mesh model corresponding to the second part of the second CAD model, select the first part of the first CAD models and classify the first part of the first CAD models into one of the plurality of groups, and
receive an input of the relation from a user and classify the selected part of the first CAD models into one of the plurality of groups according to contents of the received relation.

10. A modeling support method to be performed by an information processing device including a processor for executing a program, a display coupled to the processor, and a memory, the method comprising:
storing combinations of a first CAD models and corresponding first mesh models, the first CAD models respectively indicating shapes of a tangible object;
recognizing a plurality of shapes of parts of a tangible object respectively indicated by the first CAD models;
classifying respective each of the parts of the stored first CAD models into one of a plurality of first groups based on the recognized shapes, each first group having at least two of the parts;
displaying, on the display via a CAD interface, each of the at least two of the parts of the plurality of first groups;
receiving an input of a CAD model, specifying component parts of the input CAD model, and further specifies respective groups corresponding to the specified component parts of the input CAD model from among the specified first groups of the parts from the first CAD models;
displaying,

Assignees

• Hitachi Ltd

Inventors

• He Qi
• Kongo Chikara
• Onodera Makoto
• Shintani Masaki

Classifications

• G06T17/20 Primary

  Finite element generation, e.g. wire-frame surface description, {tesselation} · CPC title

• G06F30/00 Primary

  Computer-aided design [CAD] · CPC title

• G06F2111/20

  Configuration CAD, e.g. designing by assembling or positioning modules selected from libraries of predesigned modules · CPC title

• G06F2119/20

  Design reuse, reusability analysis or reusability optimisation · CPC title

• G06F30/10 Primary

  Geometric CAD · CPC title