JP2003330972A - Information processing device and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enter attributes to data made by a CAD device, which can be easily entered and seen, that is, with user-friendliness. <P>SOLUTION: A CAD program is executed (Step S301). A shape model is generated and displayed as an image on a display (Step S302). A projected view of the shape model is made in a desired direction and arranged in the same 3D space with the shape model (Step S303). Dimensional tolerances are added as attribute information to the shape model (Step S304). Display control is made such as display or non-display of the attribute information of the dimensional tolerance, coloring, etc., (Step S305). A method for display can be associated to the projected view or the attribute information associated to it. The attribute information can be stored in an external memory device (Step S306). A CAD attribute model in which the attribute information is added to the shape model is stored in the external memory device (Step S307). <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information processing apparatus and method, and more particularly to 3D (dimensional) -CAD (compu).
3D model created using ter aided design (3D
The present invention relates to an information processing apparatus and method using a shape) and a program.

[0002]

2. Description of the Related Art Conventionally, CAD devices (especially 3D-CAD
An apparatus) is used to design an article having a three-dimensional shape (hereinafter, simply referred to as a component) such as a product or a component constituting the product.

Based on the above design, a die for producing parts is manufactured. Further, in using the design information created by the CAD device, attribute information such as dimensions, dimensional tolerances, geometrical tolerances, notes, and symbols is input and added to the 3D model (3D shape).

In order to input the attribute information to the 3D model, the surface, the ridge line, the center line, the vertex or the like of the 3D model is designated and selected. For example, a 3D model 41 as shown in FIG. 25 (a front view of this 3D model,
(A plan view and a side view are shown in FIGS. 26A to 26C)
For example, the attribute information is input as shown in FIG.

Here, the attribute information is a distance (length, width,
Thickness, etc.), angles, hole diameters, radii, chamfers, etc., and dimensional tolerances associated with those dimensions, or geometrical and dimensional tolerances added to surfaces, ridgelines, etc. without inputting dimensions, or It is a note that is information to be instructed when processing and manufacturing parts, units, and products, or a symbol such as surface roughness determined in advance as a convention.

The methods of attaching attribute information to a 3D model are roughly classified into the following two types. (1) When adding dimensions, dimensional tolerances, geometrical tolerances, notes and symbols, dimension lines and dimensional extension lines are required to enter dimensions and dimensional tolerances, and drawers to enter geometrical tolerances, notes and symbols. A line is needed. (2) When dimension tolerances, geometric tolerances, notes, and symbols are given without dimensions, dimension lines and dimension extension lines are not required, but lead lines are used to enter dimension tolerances, geometric tolerances, notes, and symbols. Will be needed. In addition, a die is manufactured using a 3D model. In this case, it is necessary to measure and inspect whether the manufactured mold and the molded product molded by the mold are completed as designed.

[0007]

As in the above-mentioned conventional example, 3
The method of attaching attribute information to the D model has the following problems.

In the case of the above (1), the dimensions and the dimensional tolerances, and the dimension lines and dimension extension lines for writing them are complicated, and the shape and attribute information of the 3D model are difficult to see.

As shown in FIG. 27, if the shape is relatively simple and the number of attribute information is about several tens, it can be seen, but in the case of a complicated shape or a large shape, several hundreds may be necessary. ~ Since several thousands of attribute information is added to the 3D model, "attribute information overlaps with each other", "attribute information overlaps with a dimension line, dimension extension line, or lead line",
Due to "It is difficult to understand the drawing position of the dimension line, the auxiliary dimension line, or the lead line", it becomes extremely difficult to read the attribute information (even the staircase shape of the corner portion in FIG. 27 is slightly difficult to see).

In the above case, it is difficult for the operator himself who inputs the attribute information to see the input information, and the input contents cannot be confirmed, that is, the input of the attribute information itself becomes difficult.

Further, it becomes extremely difficult to read the related attribute information. Further, the space occupied by the attribute information with respect to the 3D model becomes large, and the shape of the 3D model and the attribute information cannot be viewed at the same time on a display screen having a limited size.

Further, attribute information to be designated in a so-called sectional view (for example, the depth of the counterbore hole 12 ± 0.1 in FIG. 27).
Is hard to understand because the designated location of the 3D model 41 is not visible. In the case of the above (2), the dimension line and the dimension auxiliary line are not necessary, but since the leader line is used, the leader line is complicated and the shape and attribute information of the 3D model is obtained as in the case of the above (1). It becomes hard to see. Further, in the case of a complicated shape or a large shape, hundreds to thousands of pieces of attribute information are added to the 3D model as necessary, which makes it extremely difficult to read the attribute information.

Also, a die is manufactured, and the finished die is
Also, when inspecting a molded product molded by the mold, it is necessary to measure dimensions and the like. Therefore, in order to read the dimension value, the measurement operation of the 3D model shape by the measurement function is required. In this case, it is necessary to specify and select the location that serves as the dimension reference for the surface to be read, the ridgeline, etc.When reading the dimensions of multiple locations, many operations and long operation time are required. It is something that ends up. In addition, there is an unavoidable possibility of misreading due to operation mistake. Furthermore, when reading the dimensions of all points,
It is an extremely enormous effort.

In the first place, the so-called design information of the 3D model and the attribute information is information for processing and producing parts, units and products, and the operator who inputs it = the designer sees the operator = processing, manufacturing, inspection, etc. To the technician,
Information must be transmitted in an easy-to-understand, efficient and error-free manner. In the above-mentioned prior art, these are not satisfied at all and are not in a form that can be effectively utilized industrially.

The present invention has been made in view of the above problems, and an object of the present invention is to input and add an attribute to data created by a CAD device or the like, which is easy to input and easy to see, that is, easy to operate. An object is to provide an information processing apparatus and method capable of doing the above.

It is another object of the present invention to provide an information processing apparatus and method in which the added attribute is easy to see and the design information is transmitted in a reliable and easy manner.

Another object of the present invention is to provide an information processing apparatus and method for effectively utilizing data created by a CAD device or the like and efficiently producing parts utilizing the data.

Further, it is an object of the present invention to provide an information processing apparatus and method for efficiently performing an inspection step by using data created by a CAD device or the like.

[0019]

In order to achieve such an object, the information processing apparatus of the present invention provides a projection means for projecting a 3D model in an arbitrary direction of a 3D space and attribute information for the 3D model. It is characterized by comprising attribute input means for inputting, and attribute arrangement means for arranging the attribute information on the projection plane of the 3D model.

In order to achieve the above object, the information processing method of the present invention includes a projection step of projecting a 3D model in an arbitrary direction of a 3D space, and an attribute input step of inputting attribute information for the 3D model. , The attribute information,
An attribute placement step of placing the 3D model on the projection plane.

With the above configuration of the present invention, the attribute information is
It is possible to input and arrange in association with the 3D model and the projected shape of the projected image, input can be performed very easily regardless of the number of attribute information, and information can be transmitted easily and easily in an easy-to-see and understand manner.

[0022]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail with reference to the drawings.

<< Overall Flow of Mold Production >> Figure 1
FIG. 3 is a diagram showing an overall flow of mold component mold production according to an embodiment of the present invention.

In FIG. 1, in step S101, a product is designed and a design drawing of each component is created. The design drawing of the part includes information necessary for manufacturing the part, constraint information, and the like. In the present embodiment, the design drawing of the part is created by 3D-CAD, and the drawing created by 3D-CAD (3D drawing) includes attribute information such as shape and dimensional tolerance. Dimensional tolerances can be associated with shapes (faces, ridges, points), and dimensional tolerances are used for inspecting molded products, instructing mold accuracy, and the like.

In step S102, the manufacturability such as assembly and molding of the product is examined, and a process chart for each part is created. The process drawing of a part includes detailed inspection instructions in addition to the information necessary for manufacturing the part. Process drawing of parts is 2
It is created by D-CAD or 3D-CAD.

Here, as an example of a detailed inspection instruction, Numbering of measurement items (dimensions or dimensional tolerances) Instructions on measurement points and measurement methods for measurement items and so on.

Detailed inspection instruction information can be associated with dimensional tolerances on CAD.

In step S103, step S1
Process drawing of parts created in 02 (process drawing, mold specification)
Based on, design the mold and create the drawing. The die drawing includes information necessary for die production and constraints. Mold drawing is made by 2D-CAD or 3D-CAD,
A die drawing (3D drawing) created by 3D-CAD includes attribute information such as shape and dimensional tolerance.

In step S104, step S1
The manufacturing process of the mold is examined based on the mold drawing created in 03, and the mold process drawing is created. The die processing process is NC (nu
merical control) processing and general-purpose processing. For processes that perform NC processing (automatic processing by numerical control),
Instruct to create NC program. In the general-purpose processing (manual processing) step, an instruction for performing general-purpose processing is given.

In step S105, an NC program is created based on the die drawing. In step S106, mold parts are manufactured using a machine tool or the like. Step S
In step 107, the manufactured mold parts are processed in step S1.
Check based on the information created in 03. Step S10
At 8, the mold parts are assembled and molded.

In step S109, the molded mold part is inspected based on the information created in steps S101 and S102, and if OK, the process ends. In step S110, the location of the die corresponding to the location of insufficient precision (inaccuracy in precision) of the molded product is corrected based on the inspection result of step S109.

<< Product Design >> Next, the product design is carried out,
Creation of design drawings of individual parts will be described. Design drawings of parts are created by a 3D-CAD device.

Here, the information processing device 3 shown in FIG.
Design of parts using the D-CAD device will be described.

FIG. 2 is a block diagram of the CAD device.
In FIG. 2, reference numeral 201 is an internal storage device, 202
Is an external storage device, and includes a semiconductor storage device such as a RAM (random access memory) for storing CAD data and CAD programs, a magnetic storage device, and the like.

Reference numeral 203 denotes a CPU (central processing unit).
t) A device that executes processing according to the instructions of the CAD program.

Reference numeral 204 denotes a display device, which is a CPU device 20.
The shape and the like are displayed according to the instruction of 3.

Reference numeral 205 is an input device such as a mouse and a keyboard for giving instructions to the CAD program.

Reference numeral 206 denotes an output device such as a printer which outputs a paper drawing or the like according to an instruction from the CPU device 203.

An external connection device 207 connects the CAD device to an external device, supplies data from the device to the external device, and controls the device from the external device.

FIG. 3 is a flow chart showing the processing operation of the CAD apparatus shown in FIG. First, when the operator instructs the CAD program to be started by the input device 205, the CAD program stored in the external storage device 202 is read into the internal storage device 201, and the CAD program is executed on the CPU device 203 (step S
301).

An operator interactively gives an instruction through the input device 205 to generate a shape model on the internal storage device 201 and display it as an image on the display device 204 (step S302). This shape model will be described later. Note that when the operator specifies a file name or the like using the input device 205, the external storage device 2 has already been
It is also possible to read the shape model created on the 02 into the internal storage device 201 so that it can be handled by the CAD program.

Next, the operator uses the input device 205 to create a projection drawing of the shape model in the desired direction in the 3D space. The projection view is a so-called plan view, a six-sided view including a front view, and a cross-sectional view in which a cross section is projected.
These are arranged in the same 3D space as the shape model (step S303). The projection diagram is preferably a projection of the entire model, but faces or edges may be selectively or partially projected.

Next, the operator uses the input device 205 to add dimension tolerance and the like as attribute information to the geometric model (step S304). The added attribute information can be displayed on the display device as image information such as a label. The attribute information added here is stored in the internal storage device 201 in association with any of the above projection views.

Further, at the time of the above-mentioned association, the operator may specify a search condition or the like for the attribute information using the input device 205, and perform grouping such that display control or the like for the attribute information can be collectively performed. Information on grouping of attribute information is stored in the internal storage device 201. The operator may specify the group in advance and perform attribute assignment. In addition, the operator inputs the input device 205
Thus, the attribute information can be registered / deleted in the group.

Next, the operator controls the display such as display / non-display and coloring of attribute information such as dimension tolerance by designating conditions such as a group with the input device 205 (step S305). In addition, the operator inputs the input device 205
The display method such as the display direction, the magnification, and the display center of the shape model, that is, the view is set by. The view will be described later. At this time, the display direction is set so as to match the projection direction of the above projection view. The display direction may be set before the projection drawing is created. The display method can be associated with the projection view or the attribute information associated with the projection view. When the display method is designated, only the associated attribute information and projection view can be displayed. The display method is stored in the internal storage device.

The attribute information can be stored in the external storage device 202 or the like according to the instruction of the operator (step S306). An identifier can be added to the attribute information,
This identifier can be added and stored in the external storage device 202. This identifier can be used to associate attribute data with other data.

The attribute information on the external storage device 202 to which information is added can be read into the internal storage device 201 to update the attribute information.

The operator uses the input device 205 to store the CAD attribute model in which the attribute information is added to the shape model in the external storage device 202 (step S307).

Here, the shape model and the CAD attribute model will be described.

FIGS. 4 (a) and 4 (b) are diagrams showing examples of the shape model, and FIG. 5 is a conceptual diagram showing the relation of each part constituting the shape model.

FIGS. 4A and 4B show Solid Model as a representative example of the shape model. As shown in the figure, SolidModel is a representation method that defines the shapes of parts and the like in a three-dimensional space on CAD, and uses topological information (To
and the geometrical information (Geometry). The SolidModel phase information is hierarchically stored on the internal storage device 201 as shown in FIG.
One or more Shells, one or more Faces for one Shell, and one or more Ls for one Face.
loop and one or more Edges for one Loop
And two Vertex for one Edge.

Surface information representing a face shape such as a flat surface or a cylindrical surface with respect to Face is stored in the internal storage device 201 in association with each other. Edg
Curve information representing an edge shape such as a straight line or a circular arc with respect to e is stored in association with the internal storage device 201. Coordinate values in the three-dimensional space are associated with Vertex on the internal storage device 201 and stored.

Shell, Face, Loop, Ver
Attribute information is associated with each topological element of tex and stored in the internal storage device 201.

Here, an example of a storage method on the internal storage device 201 will be described by using Face information as an example.

FIG. 6 shows the Fac on the internal storage device 201.
It is a conceptual diagram which shows the storage method of e information.

As shown in the figure, Face information is Face
An ID, a pointer to LoopList that configures Face, a pointer to Surface data that represents a Face shape, and a pointer to attribute information.

LoopList is a list of IDs of all Loops forming Face in a list format. The Surface information is the SurfaceType and the SurfacePar corresponding to the SurfaceType.
It is composed of an ameter. The attribute information is composed of an attribute type and an attribute value according to the attribute type. The attribute value also includes a pointer to Face and a pointer to a group to which the attribute belongs.

<< Input and Display of Projection View of 3D Model and Attribute Information >> Next, regarding input of attribute information to the 3D model and display of the 3D model and projection view to which the attribute information is added,
The details will be described.

7 to 11 are views showing a 3D model, a projection drawing, and attribute information, and FIGS. 12 to 14 are flowcharts showing processing operations when adding a projection drawing and attribute information to the 3D model. is there.

In step S121 of FIG. 12, the 3D model 1 shown in FIG. 7 is created, and in order to add attribute information to the created 3D model 1, the projection drawing necessary in step S122 is set.

The projection view is set as, for example, a front view projection view 2 as shown in FIG. 7, a plan view projection view 3, a side view projection view 4, and a sectional view projection view 5 as shown in FIG. To be done.
The front view, the plan view, and the projection views 2, 3 and 4 of the side view are arranged on the surface of the maximum outline of the 3D model 1 or in a three-dimensional space separated from the maximum outline of the 3D model 1 by a desired distance. The maximum outer shape is the outermost surface of the 3D model 1 with respect to the projection direction (= closest to the projection surface on which the projection drawing is arranged),
It is a ridge or a vertex. Cross-sectional projection view 5 is 3D
The model 1 is placed on the cut surface or in a three-dimensional space separated by a desired distance from the cut surface. The above projection is 3
Since it is placed in the same three-dimensional space as D model 1,
If the 3D model 1 is three-dimensionally rotated, zoomed in / out, etc., the 3D model 1 can be rotated, zoomed in / out, etc. together with the 3D model 1. It goes without saying that the projection drawing is added or deleted as needed.

Further, a view is set according to the projection view. A view is a display direction for viewing the 3D model 1 in a (virtual) three-dimensional space, a magnification,
And a display method that is determined by the center of the line of sight, which is the display center, and defines requirements relating to the display of the 3D model 1. For example, in FIG. 7, a view A having a viewing direction in the projection direction of the front view is defined. The perspective view 1 and the view A are associated with each other. The magnification and the center of the line of sight are determined so that almost all of the shape of the 3D model 1 and the attribute information given can be displayed on the display screen of the display device. For example, in the present embodiment, the magnification is 1, and the line-of-sight center is set substantially at the center of the plan view. Similarly, a view B in the viewing direction orthogonal to the plan view and a view C in the viewing direction orthogonal to the side view are also set.

Next, the attribute information is input so as to be directly associated with the line-of-sight direction of each view in association with each projection view or each view set in step S123. FIG. 9 is a diagram showing a state where attribute information is added to the projection view 2 of the front view. 10 (a), (b), and (c) show each view A,
3D model 1 and attribute information viewed from B and C. Here, the attribute information is arranged on the same plane as the projection view. Details of the arrangement of the attribute information will be described later.

The association between each projection or each view and the attribute information may be performed after the attribute information is input. For example, as in the flowchart shown in FIG. 13, the 3D model 1 is created (step S131), the attributes are input in step S132, and the attribute information is associated with the desired projection view or view in step S133. In addition, the attribute information associated with the projection view or the view is added or deleted as necessary.

The attribute information may be input by displaying the 3D model 1 and a desired projection diagram two-dimensionally,
Further, if necessary, the input may be performed while displaying it three-dimensionally. The input can be realized without any change from the man-hour for creating a two-dimensional drawing by so-called 2D-CAD. Further, since it is possible to input data while viewing the 3D model 1 in a three-dimensional manner, it is possible to realize the operation more efficiently and without error.

Next, when viewing the attribute information of the 3D model 1, by selecting a desired projection view or view in step S141 of FIG. 14, the view associated with the projection view selected in step S142 is selected. On the basis of the line-of-sight direction, the magnification, and the center of the line-of-sight, the shape of the 3D model 1 and its attribute information attached in association with its projection view or view are displayed.

The selection of the projection drawing can be easily performed by instructing the outline etc. forming the projection drawing. It is also possible to display the names of selectable projection views in a list format and select from them. Further, the view of the selectable 3D model 1 is appropriately stored and displayed on the screen as an icon or the like so that the view can be easily selected. For example, view A or view B,
Alternatively, when the view C is selected, each of FIG.
(A), or FIG. 10 (b), or FIG. 10 (c)
Is directly displayed on the screen. In any of the above selections, since the attribute information is arranged so as to face each view, the two-dimensionally extremely easily understandable on the display screen.

Further, even when the 3D model 1 is rotated and viewed three-dimensionally, the projection view and the attribute information are associated with each other and arranged on the same plane, so that the view is extremely easy and easy to understand. be able to. For example, as is clear from comparison between the presence and absence of the projection drawing 2 in FIGS. 9 and 11, when the projection drawing 2 is present, the designated position of the attribute information becomes easier to see.

<< Other Input Method of Attribute Information >> FIGS. 7 to 14
In the input of the attribute information described above using, the attribute information is individually associated with each projection view or view, but the associating means is not limited to the above.
For example, the attribute information may be grouped and the group may be associated with the projection view or the view.

Description will be made based on the flowcharts shown in FIGS. 15 and 16. The same results and effects as described above can be obtained by selectively grouping the attribute information input in advance or by grouping it based on the search result and associating the group with an arbitrary projection view or view. Also,
The attribute information associated with the projection view or the view can be manipulated by making corrections such as addition and deletion of the attribute information to the group.

That is, the 3D model 1 is generated (step S
151), input attribute information (step S152), 3
A projection view and a view are set for the D model 1 (step S153). Then, the attribute information input in step S152 is grouped, and the set projection view or view and the grouped attribute information are set in association with each other (step S154).

Further, when displaying, as shown in FIG. 16, a projection view is selected (step S161), and the attribute information associated with the selected projection view is changed to the view associated with the projection view. The information is displayed on the display device 204 according to the information of the line-of-sight direction, the magnification, and the line-of-sight center (step S162).

<< Setting of Projection View of Section >> The projection view 5 of the section will be further described with reference to FIG. 3D model 1
A cutting plane is set at a desired position in the inside (for example, passing through the center of the hole and parallel to the front view), and the view D is set with the normal direction of either the front or back of the cutting plane as the viewing direction. For example, by hiding the front side of the cut surface with respect to the line-of-sight direction, 3
The sectional shape of the D model 1 can be displayed. The projected view 5 of the cross section is arranged on the cut surface or in a three-dimensional space separated from the cut surface by a desired distance in the direction opposite to the line-of-sight direction. By inputting and displaying the attribute information in association with the projection view 5 or the view D, the point where the attribute information is designated can be easily and instantly seen while observing the cross-sectional shape in two dimensions and three dimensions. Is.

<< Setting of a plurality of projection views >> Also, a configuration having a plurality of projection views (including sectional views) in which the shape of the 3D model 1 looks the same may be adopted. FIG. 18 shows a plurality of projection views in the same projection direction. The gaze direction of the view associated with each projection is the same. In FIG. 18, the projection view 6 and the projection view 7 are the projection views 6 and 7 corresponding to the plan view of the 3D model 1. For example, by grouping and associating the attribute information with the respective projected views 6 and 7, the attribute information can be more easily seen. For example, the projection drawing 6 can be associated with the attribute information related to the rough external dimensions of the 3D model, and the projection drawing 7 can be associated with the fine (detailed) shape of the 3D model (FIG. 19). In this case, the magnification of each view associated with the projection views 6 and 7 can be set differently. By setting the magnification of the view associated with the projection drawing 6 to 1 and the magnification of the view associated with the projection drawing 7 to 2, the attribute information associated with the fine shape can be viewed easily and easily.

In setting a plurality of projection views, projection views associated with each type of attribute information, such as attribute information relating to hole positions and hole shapes, or attribute information relating to secondary processing such as printing and painting. It can be handled by setting.

<< Arrangement of Attribute Information >> 3D model and its 3D
In order to express the attribute information to be added to the model as a two-dimensional drawing on the display screen in an extremely easy-to-understand manner, the operator appropriately selects or groups a plurality of pieces of attribute information of the part of the 3D model to be expressed and associates them with the projection drawing. In the case of a two-dimensional drawing representation method, the position of the attribute information may be arranged in a face-to-face relationship with the projection direction of the related projection view, that is, the view line direction of the view. In the so-called “3D drawing”, it is necessary to devise in order to fully utilize the merit of the 3D model.

One of the merits of the 3D model is that the operator can create a 3D model on the display screen in a form close to the real thing, or an operator of the next process using the 3D model (process designer, money, etc.). For die designers / manufacturers, measurers, etc.), it is possible to omit the conversion work from 2D to 3D (this was mainly done in the operator's head) when handling 2D drawings. Is. This conversion work depends largely on the operator's ability, and in this conversion work, forgery or conversion time loss may occur due to incorrect conversion.

In the 3D drawing, it is necessary to devise the display of the attribute information (arrangement of the attribute information) at the time of stereoscopic display in order to maintain the advantage of the 3D model that stereoscopic expression is possible.

The points to be devised are shown in FIG.
A description will be given using (d).

The first measure is the surface on which the attribute information is arranged.

FIG. 20A is a perspective view of the 3D model 21 used for the explanation, FIG. 20B is a plan view of the 3D model 21, and FIG. FIG. 20D is a perspective view for explaining the above state, and FIG. 20D is a perspective view in which the arrangement of the attribute information is devised.

First, for the 3D model 21, a projection drawing 22 and a view are created to create a plan view, and attribute information is input. FIG. 20B shows a state in which the view is displayed from the line-of-sight direction.

Regarding the input of the attribute information, FIG.
If the surfaces on which a plurality of attribute information are arranged are staggered as in (c), the attribute information overlaps and it becomes difficult to determine the content of the attribute information. As shown in FIG. 20C, even if the attribute information is small, it is difficult to see. Therefore, it can be easily imagined that the attribute information is no longer useful information if it has a more complicated shape and that it cannot be realized as a drawing in the perspective state.

However, by arranging the attribute information on the same plane as the projection drawing 22 as shown in FIG. 20D, the attribute information does not overlap each other and a two-dimensional representation of the drawing (FIG. 20B) is obtained. ), The attribute information can be easily discriminated.

Thus, in the drawing form (three-dimensional drawing) in which the attribute information is added to the 3D model 21, not only the two-dimensional representation of the drawing but also the three-dimensional 3D model 21 which is the merit of the 3D model 21 can be realized. Since the attribute information can be easily discriminated while being expressed, it can be used as a three-dimensional drawing (3D drawing).

The above is the same when associating attribute information with a plurality of projections in the same line-of-sight direction.

Further, when a plurality of projection views are created in the same line-of-sight direction, it is preferable to arrange them separately (FIG. 18).
When simultaneously displaying a plurality of projection views and the attribute information associated with them, if the projection views are created on the same plane, the plane on which the attribute information is arranged will also be on the same plane. Even if you look at it, attribute information overlaps each other, making it difficult to see. In the first place, since there is a lot of attribute information when viewed from the same direction, it is divided into a plurality of projection views, and when displaying attribute information at the same time, it is inevitable that the attribute information will overlap.

Even if it is not possible to save the difficulty in viewing from the line-of-sight direction, it is effective to dispose the projection views in the same line-of-sight direction apart as a means for making it easier to distinguish the attribute information in the perspective state.

The second device is how to extract the attribute information. In order to draw out the attribute information from the 3D model to the surface on which the projection drawing in the three-dimensional space is arranged, the line corresponding to the lead line or the dimension auxiliary line is bent once, for example, to L.
It is necessary to pull out in a letter shape. As for this withdrawal method,
As shown in FIG. 21, the method of bending on the 3D model 1 side (first, the attribute information is extracted from the 3D model 1 and drawn on the surface of the projection view 2 at the position of the dimension line, etc., line 11) and the surface of the projection view 2 is displayed. Bending method (First, connect the 3D model 1 and the projection view with a line, and extract the attribute information on the plane of the projection view 2.
Line 12) is considered. In the present invention, in order to associate the attribute information with the projection drawing, a method of bending the projection drawing in the plane is preferable. With that method, it becomes very clear which part of the projection view the attribute information relates to,
In the “3D drawing”, the merit of the 3D model can be fully utilized.

<Magnification> Next, the magnification of the view associated with the projection view will be described. Magnification is a display device 2 for displaying a 3D model shape and projection drawing in a (virtual) three-dimensional space.
04 is the scaling factor for enlarging / reducing display. By setting the magnification to a desired magnification, a complicated shape or a detailed shape can be seen more easily. Further, the shape can be more easily understood by reducing the shape having a large size and viewing the entire shape.

FIGS. 22A, 22B, and 22C are views showing a state in which a part of the 3D model 31 is enlarged and displayed. For example, as shown in FIG. 22A, with respect to the 3D model 31, the line-of-sight direction is directed to the projection view 32 corresponding to the plan view,
By setting the view in which the center of the line of sight is near the corner and the magnification is, for example, 5 times, the step-like shape and the attribute information can be displayed in an extremely easy-to-understand manner. (FIG. 22B) The present embodiment is effective for 3D-CAD in general regardless of the hardware configuring the 3D-CAD device or the method of configuring the 3D shape model.

Furthermore, the size of the attribute information (height of characters and symbols) associated with the projection drawing 32 is changed according to the magnification of the view associated with the projection drawing. (FIG. 22B) The size of the attribute information (unit is, for example, mm) is 3
It is defined as the size in the virtual three-dimensional space in which the D model 31 exists (not the size when displayed on the display device 204).

For example, in the view of the projection view 32, the size of the attribute information when the magnification is 1 is 3 mm. FIG. 22C shows an example in which the projection view 32 is similarly displayed in the view of magnification 5 with the character height set to 3 mm. Since the attribute information associated with the projection drawing 32 is displayed at a display magnification of 5 times, its size is 15 mm. It is good that the displayed size is large for viewing, but its 15mm
Is unnecessarily large and is not suitable when there is information to be viewed at once.

22 (b) and 22 (c), square lines indicate the displayable range on the display device 204. By arranging so that the attribute information does not overlap, the 3D model and projection
Since the positions of the attribute information are distant from each other, it is difficult to understand the relation between the shape and the attribute information related to the shape, and there is a possibility of misreading. Further, if there is a large amount of attribute information to be displayed, all of the attribute information cannot be displayed on the display device 204, and the display range must be changed in order to see the attribute information outside the displayable range, which is troublesome.

When it is desired to reduce the size of the display (the magnification is 1
If the character size is not changed to (less than), the display size of the attribute information on the display device 204 becomes small in the reduced view display state, and the content of the attribute information cannot be determined.

Therefore, in consideration of the time when the attribute information is displayed, it is desirable to change the size according to the information size of the attribute information.

Therefore, it is advisable to make the scale factor and the size of the attribute information approximately inversely proportional. For example, when the magnification of the view associated with the projection view is 1, the size of the attribute information is 3
In the case of setting mm, if the magnification of the view in the projection view 32 is 5, the size of the associated attribute information is 0.6.
mm.

When attribute information associated with an arbitrary projection view is associated with another projection view, the size of the attribute information is changed according to the magnification of the view associated with the projection view of the change destination. To do.

<< Multiple Selection of Projection Views >> In the above embodiment, when the attribute information associated with the projection views is displayed, the number of projection views to be selected is only one. However, in view of the object of the present invention. And, there is no problem even if you select multiple projections.

However, when single selection of the projected view is performed,
Since there is only one line-of-sight direction, magnification, and center of line-of-sight, there is only one display method on the display device. For example, when multiple selections are made, all attribute information associated with the selected projections is displayed, and the line-of-sight direction, magnification,
It may be possible to select which view setting should be adopted for the center of the line of sight.

Further, the attribute information is displayed by changing the color for each associated projection so that the group can be easily identified.

<< Display Method of Attribute Information >> In the above conventional example,
As the order of selectively displaying the attribute information input to the 3D model, first, a projection drawing or view is selected, and then the attribute information associated with the projection drawing or view is appropriately displayed. However, the method is not limited to this method, and the attribute information is selected, and then the 3D model, the projection, and the view direction, magnification, and center of the view of the view associated with the attribute information are selected. A method of displaying the figure and its attribute information is also effective.

FIG. 23 is a flow chart showing this series of processing operations. As shown in FIG. 9, while the 3D model 1 and the attribute information are displayed (it is needless to say that the attribute information associated with other projection views may be displayed at the same time), the attribute information (for example, 35 ± 0) is displayed. . 3) is selected (step S311).

By this selection, the 3D model 1, the projection view, and the attribute information are displayed based on the line-of-sight direction, magnification, and center of the line-of-sight of the view associated with the projection view associated with the attribute information (step). S312).
In this case, the front view is displayed as shown in FIG.

As a result, the selected attribute information and 3D
Since the relationship with the model 1 is displayed two-dimensionally, it becomes easier to recognize.

Further, the geometric information of the 3D model (edges, faces,
Vertices) to display the attribute information associated with the geometric information, and further, the 3D model, the projection view, and the 3D model in the view direction, magnification, and center of the view of the projection view or view associated with the attribute information. A method of displaying attribute information is also effective.

FIG. 24 (from attribute information selection to display) is a flow chart showing this series of processing operations.

Geometric information of the 3D model is selected (step S321).

Associated with the selected geometric information,
The attribute information is displayed (step S322).

If there are a plurality of associated attribute information, all of them may be displayed. Further, all the attribute information belonging to the projection view associated with the attribute information may be displayed.

Next, the 3D model, the projection view, and the attribute information are displayed based on the line-of-sight direction, the magnification, and the center of the line-of-sight of the view related to the displayed view related to the displayed attribute information. As described above, since the related attribute information can be searched and displayed from the geometric information of the 3D model, it is very easy to use.

<< Display >> Here, the display of the 3D model to which the attribute information created as described above is added will be described.

The 3D model added with the attribute information created by the information processing apparatus shown in FIG. 2 is transferred by transferring the data of the created apparatus itself or the data of the created 3D model via the external connection device. 1 can be displayed and used in each step shown in FIG.

First, the operator who is the product / unit / part design engineer or the design designer who created the 3D model himself creates the 3D model as shown in FIG.
By performing the display as shown in (a), (b), and (c), new attribute information can be added to the 3D model as if a two-dimensional drawing was created.
Also, for example, if the shape is complicated, 3D
By alternately displaying the three-dimensional display and the two-dimensional display of the model, or displaying them on the same screen, desired attribute information can be input efficiently and accurately.

Also, check the created 3D model /
An operator in the approval position performs a check by displaying the created 3D model shown in FIGS. 10 (a), 10 (b), and 10 (c) on the same screen or by switching, and the check is completed, OK, Attribute information such as marks, symbols, coloring, etc., which indicate NG, hold, need to be examined, or the like is added. Needless to say, the check is performed while comparing and referring to a plurality of products / units / parts as necessary.

Further, a design engineer or a design designer other than the creator of the created 3D model can create the 3D model.
It can be used when designing other products / units / parts with reference to the D model. By referring to the 3D model, the intention of the creator or the design method can be easily understood.

Further, in manufacturing and manufacturing the 3D model, the operator who gives the information necessary for that purpose to the 3D model or the attribute information can be used. In this case, the operator is an engineer who sets up the manufacturing process of the product / unit / part. The operator adds, for example, a type of machining process, an instruction of a tool to be used, or a corner R and a chamfer to a ridge line portion, a corner portion, a corner portion, etc. necessary for machining to the 3D model. Alternatively, input a measurement method instruction for dimensions, dimensional tolerances, etc., add measurement points to the 3D model, and input information to be noted in measurement. These are shown in FIG.
As shown in (b) and (c), the operation is performed efficiently and surely while looking at the display that is arranged and created so that it is easy to see, and while checking the shape three-dimensionally if necessary.

Further, in producing and manufacturing the 3D model, the operator can obtain the information necessary for the desired preparation from the 3D model or the attribute information. In this case, the operator is a design engineer who designs the molds, jigs, tools, and various devices required for production.
The operator understands and grasps the shape while viewing the 3D model in a three-dimensional state, and the necessary attribute information is displayed in FIG.
As shown in (b) and (c), the display is arranged and created so as to be easy to see and checked and extracted. Based on the attribute information, the operator designs a mold, a jig, various devices and the like. For example, when the operator is a mold design engineer, the operator uses the 3D model and attribute information to configure the mold,
Design while considering the structure. Further, if necessary, corners R and chamfers are added to ridges, corners, corners, etc., which are necessary for die manufacturing. When the mold is a resin injection mold, the operator adds a draft or the like necessary for molding to the 3D model, for example.

Also, it can be used by an operator who manufactures and manufactures products / units / parts. In this case, the operator is a product / unit / component processing engineer or an assembly engineer. The operator easily understands and grasps the shape to be machined or the shape to be assembled while viewing the 3D model in a three-dimensional state.
As shown in (c), processing and assembling are performed by looking at the display created and arranged so that it is easy to see. Then, if necessary, the operator checks the shapes of the processing section and the assembly section. Further, it may be possible to add the processed information, the difficult processing, or the processing result as attribute information to the 3D model or the already added attribute information and feed the information back to the design engineer.

Also, manufactured / manufactured / unit /
It is available to operators who inspect, measure and evaluate parts. In this case, the operator is a technician who inspects, measures and evaluates products / units / parts. 10 (a), 10 (b), and 10 (b)
As shown in (c), while observing the display that is arranged and created so as to be easy to see, and while confirming the shape three-dimensionally if necessary, the inspection, measurement, and evaluation are performed efficiently and surely. Then, the operator can add inspection, measurement, and evaluation to the 3D model as attribute information, if necessary. For example, the measurement result corresponding to the dimension is given. Further, a mark or a symbol is added to the attribute information of the defective portion such as outside the dimensional tolerance or scratches or to the 3D model. Further, similar to the check result, inspection, measurement, evaluated marks, symbols, coloring, or the like may be performed.

Also, it can be used by operators of various departments and roles related to production of products / units / parts and production. In this case, the operator may be, for example, a person in charge of analyzing manufacturing, manufacturing costs, or a product / unit /
The part itself, a person in charge of ordering various related parts, a person in charge of creating a product / unit / part manual, a packing material, and the like. Also in this case, the operator can easily understand and grasp the shapes of the products / units / parts while viewing the 3D model in a three-dimensional state, and as shown in FIGS. 10 (a), (b), and (c).
Perform various tasks efficiently by looking at the display that has been created and arranged so that it is easy to see.

<Input of Inspection Instruction> Next, the inspection instruction will be described.

As described above, in order to inspect the finished die or parts, the dimensions and the like are assigned to the 3D model in advance and displayed.

Here, the attribute information is input so that the position to be inspected is displayed clearly on the set projection view.

That is, the order of inspection, the inspection position, the inspection item, etc. are input with respect to the surfaces, lines, ridges, etc. that make up the 3D model. The inspection man-hours are reduced by inspecting in that order.

First, the entire item is input by inputting the item and position to be inspected. Then, by the prescribed method,
Allocate the order of inspection and assign the order to each item. When actually inspecting, a projection drawing is selected by instructing the order, and in the displayed projection drawing, the surface of the position to be inspected has a different form (color, etc.) from the others. ) Is displayed, and the inspection position becomes clear.

Then, the inspection result is input for each instructed inspection item, and it is determined whether or not remolding is necessary.

As described above, according to the embodiment of the present invention, it is possible to obtain an easy-to-see screen with a simple operation based on the set projection drawing and attribute information. Also, the relationship between the line-of-sight direction and the attribute information can be seen in a list. Moreover,
By previously inputting the dimension value and the like, misreading by an operator's operation mistake is reduced.

Further, only the information associated with the line-of-sight direction can be viewed, and the necessary information can be easily known.

Also, a large amount of attribute information in the same line-of-sight direction
By assigning to a plurality of projection views, it is possible to obtain a screen that is easy to see, and it is possible to easily know the necessary information. In addition, the attribute information can be displayed in an easy-to-understand manner by setting the projection view inside the 3D model, that is, the cross-sectional shape.

Further, since the size of the attribute information is changed according to the display magnification of the view associated with the projection view, it can be expressed easily and appropriately. Further, by arranging the attribute information on the projection view, the attribute information can be read even when the 3D model is viewed three-dimensionally from an angle.

Further, from the attribute information, it is possible to search the projection drawing and only see the information associated with the projection drawing, and it is possible to easily know the necessary information.

Further, from the geometric information, it is possible to search the attribute information and the projection drawing, and further only the information associated with the projection drawing, and it is possible to easily know the necessary information.

[0134]

As described above, according to the present invention, 3
A 3D model is projected in an arbitrary direction of the D space, attribute information for the 3D model is input, and the attribute information is arranged on the projection surface of the 3D model.

Therefore, the attribute information can be input and arranged in association with the 3D model and the projected shape of the projection, and the input can be made extremely easily regardless of the number of the attribute information, and the information is easy to see, understand and surely. Can be transmitted.

Further, according to the present invention, it is possible to efficiently carry out the parts manufacturing by effectively utilizing the data created by the CAD device or the like.

[Brief description of drawings]

FIG. 1 is a diagram showing an overall flow of production of a mold part mold according to an embodiment of the present invention.

FIG. 2 is a block diagram of a CAD device according to an embodiment of the present invention.

FIG. 3 is a flowchart showing a processing operation of the CAD apparatus shown in FIG. 2 according to the embodiment of the present invention.

FIG. 4 is a diagram showing an example of a shape model according to an embodiment of the present invention, in which (a) is a Solid Model diagram and (b) is Sh.
The figure of ell is shown.

FIG. 5 is a conceptual diagram showing the relationship of each part constituting the shape model according to the embodiment of the present invention.

FIG. 6 is a diagram showing an Fac on the internal storage device according to the embodiment of the present invention.
It is a conceptual diagram which shows the storage method of e information.

FIG. 7 is a diagram showing a 3D model and a projection view of the embodiment of the present invention.

FIG. 8 is a diagram showing a projection view of a 3D model and a cross section according to the embodiment of the present invention.

FIG. 9 is a diagram showing a 3D model, a projection diagram, and attribute information according to the embodiment of the present invention.

10A and 10B are diagrams showing respective projection views and attribute information of the 3D model according to the embodiment of the present invention, where FIG. 10A is a 3D model and attribute information viewed from view B, and FIG. 10B is a 3D model viewed from view A. And (c) is a diagram showing a 3D model and attribute information viewed from view C.

FIG. 11 is a diagram showing a 3D model and attribute information according to the embodiment of the present invention.

FIG. 12 is a flowchart showing a processing operation when attribute information is added to the 3D model according to the embodiment of the present invention.

FIG. 13 is a flowchart showing a processing operation when attribute information is added to the 3D model according to the embodiment of the present invention.

FIG. 14 is a flowchart showing a processing operation when attribute information is added to the 3D model according to the embodiment of the present invention.

FIG. 15 is a flowchart showing a processing operation when attribute information is added to the 3D model according to the embodiment of the present invention.

FIG. 16 is a diagram in which attribute information according to the embodiment of the present invention is added 3
It is a flow chart when displaying a D model.

FIG. 17 is a diagram showing a 3D model, a projection view of a cross section, and attribute information according to the embodiment of the present invention.

FIG. 18 is a diagram showing a state in which a plurality of projection views are set in the 3D model.

FIG. 19 is a diagram showing a 3D model, a projection diagram, and attribute information according to the embodiment of the present invention.

20A and 20B are diagrams showing an example of a 3D model according to an embodiment of the present invention, in which FIG. 20A is a perspective view of the 3D model, FIG. 20B is a plan view of the 3D model, and FIG. A perspective view for explaining a state where information is added is shown in (d).

FIG. 21 is an explanatory diagram of a method of extracting attribute information according to the embodiment of this invention.

22A and 22B are diagrams showing a case in which an attribute arrangement plane is assigned to a part of a 3D model according to the embodiment of the present invention. FIG. 22A is a diagram of a 3D model, and FIG. FIG. 13C is a diagram easily displayed, and FIG. 13C is a diagram showing an example in which a projection view is displayed with a character height of 3 mm in a view at a magnification of 5.

FIG. 23 is a flowchart for displaying a 3D model and attribute information from attribute information according to the embodiment of the present invention.

FIG. 24 is a flowchart for displaying a 3D model and attribute information from geometric information according to the embodiment of the present invention.

FIG. 25 is a diagram showing an example of a conventional 3D model.

FIG. 26 is a diagram of the conventional 3D model shown in FIG.
(A) is a plan view, (b) is a side view, and (c) is a front view.

27 is a diagram showing a state in which attribute information is added to the conventional 3D model shown in FIG.

[Explanation of symbols]

1, 21, 31, 41 3D model 2, 3, 4, 5, 6, 7, 22 Projection diagram 11, 12 Dimension extension line 32 projection 201 Internal storage device 202 external storage device 203 CPU device 204 display device 205 input device 206 Output device 207 External connection device

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Sasako Etsuichi             3-30-2 Shimomaruko, Ota-ku, Tokyo             Non non corporation F-term (reference) 5B046 AA05 FA09 FA17                 5B050 BA07 BA18 CA07 EA27 FA02                 5B080 AA19 BA04 CA01 FA09

Claims (11)

[Claims] 1. A projection means for projecting a 3D model in an arbitrary direction of a 3D space, an attribute input means for inputting attribute information for the 3D model, and an attribute for arranging the attribute information on a projection surface of the 3D model. An information processing apparatus comprising: an arrangement unit. 2. The information processing apparatus according to claim 1, further comprising a storage unit that stores the projection shape on which the 3D model is projected and the attribute information in association with each other. 3. A line-of-sight setting unit that sets an arbitrary line-of-sight direction for the 3D model, wherein the projection unit projects the 3D model in the line-of-sight direction set by the line-of-sight setting unit. The information processing device according to item 1 or 2. 4. The information processing apparatus according to claim 3, further comprising a storage unit that stores the line-of-sight direction and the attribute information in association with each other. 5. The information processing apparatus according to claim 1, further comprising a display unit that directly displays a projected shape on which the 3D model is projected. 6. A projection step of projecting a 3D model in an arbitrary direction of a 3D space, an attribute input step of inputting attribute information for the 3D model, and an attribute for arranging the attribute information on a projection surface of the 3D model. An information processing method comprising: an arranging step. 7. The information processing method according to claim 6, further comprising a storage step of storing the projection shape on which the 3D model is projected and the attribute information in association with each other. 8. A line-of-sight setting step for setting an arbitrary line-of-sight direction with respect to the 3D model, wherein the projecting unit projects the 3D model in the line-of-sight direction set by the line-of-sight setting unit. Item 6. The information processing method according to Item 6 or 7. 9. The information processing method according to claim 8, further comprising a storage step of storing the line-of-sight direction and the attribute information in association with each other. 10. The information processing method according to claim 6, further comprising a display step of directly displaying a projection shape on which the 3D model is projected. 11. A program for causing an information processing apparatus to execute each step of the information processing method according to claim 6.