JP5036633B2 - Drawing creation apparatus and drawing creation program - Google Patents

Description

  The present invention relates to a drawing creation apparatus and a drawing creation program using CAD data.

Currently, top-down design is often used as a modeling method. For example, Patent Document 1 proposes a mechanical component design support system using a skeleton model in which components having a rough outer shape that does not design the shape of details are assembled. In this system, after a drive mechanism is determined using a skeleton model created by CAD (Computer Aided Design), the outer shape of each component is designed in detail.
When detailed design of each part is performed by a plurality of computers, the DXF (Drawing eXchange Format) format has been used in order to reliably transfer data even if the specifications of CAD data that can be handled by each computer differ. For example, see Patent Document 2).

  Conventionally, when using assembly drawings to modify / change some parts that make up a model and create an assembly drawing of a model with a similar shape, if you change some parts, the dimensions will not be referenced from the assembly drawing. Oops. Therefore, the user replaces some parts of the original assembly drawing, changes the shape, etc., and manually sets dimensions to create an assembly drawing of a similar shape model.

JP 2001-34657 A Japanese Patent Laid-Open No. 10-301971

  Since the conventional drawing creation apparatus is configured as described above, when creating an assembly drawing for each model of a similar shape with some of the parts being different, manual modification of the dimensions is required. There was a problem.

  The present invention has been made to solve the above-described problems. When an assembly drawing is created for each model having a similar shape in which some parts are different, an operation for setting a dimension for each assembly drawing is performed. The purpose is to make it easy and automatic and to improve work efficiency.

  The drawing creation apparatus according to the present invention includes: a summary design model drawing data in which summary design model dimension information is added to a summary design model drawing indicating a relationship in which a plurality of parts are assembled; and a detailed part in which details of a plurality of parts are designed. Using the detailed model drawing data of the detailed model drawing showing the assembled relationship and the individual part drawing data in which the individual part dimension information is added to the individual part drawing showing only the arbitrary detailed parts shown in the detailed model drawing Outline of Design Model Drawing Data The design model dimensional information and the individual part dimensional information of the individual part drawing data are extracted, and a drawing composition unit for creating composite drawing data given to the detailed model drawing is provided.

  According to this invention, the outline design model drawing data in which outline design model dimension information is given to the outline design model drawing showing the relation in which a plurality of parts are assembled, the relation in which detailed parts in which details of a plurality of parts are designed are assembled Detailed model drawing using detailed model drawing data and individual part drawing data in which individual part dimension information is added to individual part drawings that show only any detailed parts shown in the detailed model drawing. Since the composite drawing data to which the design model dimension information and the individual part dimension information are added is created, the work of setting the dimensions for each assembly drawing can be made easy and automatic, and the work efficiency can be improved.

Embodiment 1 FIG.
FIG. 1 is an explanatory diagram for explaining a drawing creation method of a drawing creation apparatus according to Embodiment 1 of the present invention. FIG. 2 shows a three-dimensional model used by the drawing creation apparatus according to Embodiment 1 of the present invention. FIG. 1A is an individual part drawing of the detailed part 1, which is a drawing created based on the detailed part 41 constituting the detailed model of the three-dimensional shape shown in FIG. FIG. 1B is an outline design model drawing of the outline design model (skeleton) 10, and is an assembly drawing created based on the outline design model having a three-dimensional shape shown in FIG. The general design model 10 is formed by assembling parts 11 and 12 whose detailed outer shape is not designed. An example in which the detailed external shape of the part 11 is designed is the detailed part 1 in FIG.

The 3D model shown in FIG. 2A is a detailed model obtained by assembling the detailed parts 41 and 42 whose details are designed, and the 3D model shown in FIG. 2B is a part whose details are not designed. This is a schematic design model obtained by assembling 43 and 44. In the top-down design, an outline design model in which the rough shape before designing the details is designed as shown in FIG. 2B is created in the initial outline design stage, and in the later detailed design stage, A detailed model as shown in FIG. 2A, in which details of the outline design model are designed, is created.
It is assumed that the same parameters as those of the detailed parts 41 and 42 constituting the detailed model are set in the parts 43 and 44 constituting the outline design model. Therefore, when the shape of the general design model is changed, the change is reflected in the shape of the detailed model. For example, if the lengths of the parts of the general design model are changed, the lengths of the same detailed parts of the detailed model are similarly changed.
Further, it is assumed that the detailed parts of the individual part drawings are given link information to corresponding parts of the outline design model drawing and link information to corresponding parts of the detailed model drawing.

FIG. 1C is a detailed model drawing of the detailed model 20, which is an assembly drawing created based on the detailed model shown in FIG. Of the detailed components 21 and 22 constituting the detailed model 20, the detailed component 21 is the detailed component 1 of FIG.
FIG. 1D is a composite drawing obtained by combining the outline design model drawing, the individual part drawing, and the detailed model drawing.
In the present embodiment, outline design model drawings, individual part drawings, and detailed model drawings, which are not set with dimensions, prepared by CAD such as AutoCAD (registered trademark) are prepared, and dimensions are set using these drawings. A drawing creation apparatus for creating a composite drawing which is an assembly drawing will be described.

  FIG. 3 is a block diagram showing the configuration of the drawing creating apparatus according to Embodiment 1 of the present invention. A drawing creation apparatus 50 shown in FIG. 3 has a dimension setting unit 51 for setting dimensions in each part with respect to the outline design model drawing and the individual part drawing, and the position of drawing synthesis in the outline design model drawing, the individual part drawing, and the detailed model drawing. A reference point setting unit 52 that arranges reference points used for alignment, a format conversion unit 53 that converts the file format of each drawing into a DXF format, and a drawing synthesis unit 54 that synthesizes the drawings and creates an assembly drawing with dimensions set. And an input / output unit 55 that accepts user input information and presents output information output by each unit to the user.

FIG. 4 is an individual part drawing used by the drawing creating apparatus according to Embodiment 1 of the present invention. The individual part drawing shown in FIG. 1A is the same as the individual part drawing shown in FIG.
Here, in addition to the detailed component 1 in FIG. 4A, the detailed component 3 in FIG. 4B and the detailed component 5 in FIG. 4C are assembled to the detailed component 22 in FIG. 1C, respectively. Consider the case of creating detailed model drawings of three types of similar shapes. In that case, in order to create an assembly drawing for each detailed model of a similar shape, individual part drawings corresponding to the detailed parts 1, 3 and 5 are prepared. Further, detailed model drawings in which the detailed parts 1, 3, 5 and the detailed part 22 are assembled are prepared (not shown). Further, a drawing shown in FIG. 1B is prepared as a schematic design model drawing that is common to the detailed model of the similar shape that is the basis of the detailed model of the similar shape.
In the following, each part of the drawing creation device 50 will be described by taking as an example the case of creating a composite drawing using these prepared drawings.

The dimension setting unit 51 shown in FIG. 3 receives a user operation instruction via the input / output unit 55 and sets dimensions in the outline design model drawing and the individual part drawing.
Here, the dimension set in the outline design model drawing is a dimension common to detailed models of similar shapes. For example, in the individual part drawing of FIG. 4, the detailed parts 1, 3, and 5 are not changed in the shape of the long side from the outline design stage to the detailed design stage, and the long side dimensions are the detailed parts 1, 3, and 5. Is common. Accordingly, the long side dimension “152” common to the detailed models of similar shapes is set in the schematic design model drawing of FIG. On the other hand, since the short side is designed in a plurality of patterns in the detailed design and the shape of the details is different, the dimensions are not common. Therefore, the short side dimension is not set.
In addition, since the part 12 is common to detailed models of similar shapes, the dimension “30.2” of the short side is set for the part 12. Further, even if the outer shape of the part 11 is different, the arrangement position of the part 11 with respect to the part 12 is common among detailed models of similar shapes, and thus the dimension “104.05” is set.

  The dimensions set in the individual part drawing are set in a detailed shape that can be expressed only by the detailed parts and in a part that is not set in the outline design model to be synthesized. Therefore, in each individual part drawing of FIG. 4, the short side dimension “17.5” is set for the detailed part 1, and the detailed parts 3 and 5 are similarly set with specific dimensions for the short side.

The reference point setting unit 52 receives a user operation instruction via the input / output unit 55 and sets the reference point in the individual component drawing, the outline design model drawing, and the detailed model drawing. Since the reference point is used for alignment when combining the individual part drawing, the outline design model drawing, and the detailed model drawing, it is arranged at the same position on the part. In FIG. 1, a reference point 2 is arranged at the lower right of the detailed part 1, a reference point 13 is arranged at the same position in the outline design model drawing, and a reference point 23 is arranged at the same position in the detailed model drawing.
4B and 4C, the reference points 4 and 6 are set at the same position by the reference point setting unit 52 in the same manner.

The format converter 53 corresponds to various CAD software specifications, and in order to facilitate the synthesis of the drawings, individual part drawings, outline design model drawings and detailed models in which dimensions and reference points are set. The CAD data of the drawing is converted into DXF format with the same scale. At that time, the format converter 53 arranges the scales so that the sizes of the parts in the drawings are the same.
In the case where a Japanese note is included in the general design model drawing, the format conversion unit 53 unifies the font of the note to prevent garbled characters.

The drawing composition unit 54 searches for the reference points from the individual part drawing, the detailed model drawing corresponding to the outer shape of the detailed part of the individual part drawing, and the outline design model drawing, so that the searched reference points overlap each other. These three drawings are combined. At the time of synthesis, the drawing synthesis unit 54 extracts dimensions from the outline design model drawing and discards the outline shape of the outline design model. The reason for discarding is that the outline shape of the outline design model is a rough design, and lines of a rough outline shape that should not be shown are not displayed in the composite drawing.
Similarly, the drawing composition unit 54 extracts dimensions from the individual component drawings and discards the outer shape of the detailed component.

Specifically, using FIG. 1, the drawing composition unit 54 extracts the dimensions and the reference point 2 from the individual component drawing, aligns the reference point 2 with the reference point 23 of the detailed model drawing, Place the extracted dimensions.
The drawing composition unit 54 extracts each dimension and reference point 13 from the outline design model drawing, aligns the reference point 13 with the reference point 23 of the detailed model drawing, and arranges the extracted dimensions. To do. Further, if an annotation is included in the outline design model drawing, the drawing synthesis unit 54 also extracts the annotation and adds it to the detailed model drawing using the reference points 13 and 23.

In this way, the drawing composition unit 54 adds the dimensions of the individual part drawing and the outline design model drawing to the detailed model 20 formed by assembling the detailed parts 21 and 22 of the detailed model drawing. The composite drawing arranged so as to coincide is the assembly drawing shown in FIG. The reference point 31 on the assembly drawing is a point where the reference points 2, 13, and 23 used for alignment by the drawing composition unit 54 are overlapped.
Since the detailed part 1 of the individual part drawing, the part 11 corresponding to the outline design model drawing, and the corresponding detailed part 21 of the detailed model drawing are defined by link information, the drawing composition unit 54 uses the reference point. In addition to alignment, a configuration that performs alignment using link information may be used. By the alignment using the link information, the display position of the dimension with respect to the component does not shift.

FIG. 5 is a composite drawing synthesized by the drawing creating apparatus according to Embodiment 1 of the present invention. The composite drawing in FIG. 1 (d) is the same as the composite drawing shown in FIG. 5 (a).
Similar to the composite drawing of FIG. 1D, the drawing composition unit 54 converts the individual component drawing of FIG. 4B and the detailed component 21 of FIG. 1C into the detailed component 3 of FIG. 4B. The replaced detailed model drawing and the outline design model drawing of FIG. 1B are combined to create a combined drawing shown in FIG.
Similarly, the drawing composition unit 54 includes the individual part drawing of FIG. 4C, the detailed model drawing in which the detailed part 21 of FIG. 1C is replaced with the detailed part 5 of FIG. 4C, and FIG. The composite design drawing shown in FIG. 5C is created by combining the outline design model drawing of b).

As described above, even when there are many design patterns for the detailed external shape of the detailed part, the drawing creating apparatus 50 sets the dimensions common to the detailed model of the similar shape in the outline design model drawing, and replaces it with the detailed part to be replaced. By synthesizing the individual part drawing in which the unique dimension is set and the corresponding detailed model drawing, it is possible to easily create a combined drawing of the detailed model to which the dimension is added.
Further, even when a detailed part to be replaced is newly created, the drawing creating device 50 creates an individual part drawing in which dimensions and reference points are set for the detailed part, and a detailed model drawing in which the detailed part is reflected. It is only necessary to synthesize the outline design model drawing in which the dimensions and reference points are already set, and it becomes easy to deal with the creation of a new synthesized drawing.

As described above, according to the first embodiment, the dimension setting unit 51 that sets dimensions for the outline design model drawing of the outline design model 10 and the individual part drawing of the detailed part 1, A reference point setting unit 52 for setting reference points 2, 13, and 23 for the detailed model drawing of the detailed model 20 reflecting the details of the detailed design 1 A format conversion unit 53 that converts the drawing into the DXF format with the scale adjusted, a drawing composition unit 54 that combines and combines the drawings at the reference points 2, 13, and 23, accepts user input information, and sends each part to the user The input / output unit 55 for presenting the output information is provided. Therefore, the dimensions are set by synthesizing the individual part drawing in which the dimensions specific to the details of the detailed part 1 are set and the outline design model drawing in which the outline dimensions are set into the detailed model drawing having no dimensions. This makes it easy to create composite drawings.
Furthermore, by using the outline design model drawing in which the dimensions of the rough external shape are set for the synthesis of the detailed model drawings of similar shapes with different detail designs, it is possible to set the dimensions for each detailed model drawing of similar shapes. It becomes easy and automatic, and it is possible to improve work efficiency.

  The drawing creating apparatus 50 according to the first embodiment is configured to create a composite drawing using the prepared individual part drawing, outline design model drawing, and detailed model drawing. A configuration having a function of creating a drawing and a detailed model drawing may be used.

When there are a plurality of similar shape outline design models and a plurality of sets of individual part drawings and detailed model drawings corresponding to each of the similar shape outline design model drawings exist, the drawing creating apparatus 50 sets in advance A configuration may be provided that includes a part selection unit that selects an outline design model drawing according to the selected selection conditions, and further selects an individual part drawing linked to the outline design model and the detailed model drawing. For example, in the case of the selection condition for setting the length of the long side of the general design model to 152 mm, the component selection unit selects the general design model drawing having the long side of 152 mm from the general design model drawing having a plurality of patterns. The component selection unit further selects an individual component drawing linked to the selected outline design model drawing and its detailed model drawing.
Also, for example, when the selection condition is set to a long side length of 100 mm, the component selection unit selects an outline design model drawing having a long side length of 100 mm, and an individual component linked to the outline design model drawing Select a drawing and its detailed model drawing. Note that the component selection processing by the component selection unit may be configured to be performed before the drawing synthesis processing by the drawing synthesis unit 54.
In the case where the drawing creation device 50 is configured to include a part selection unit, each part model is automatically selected according to the selection condition for each drawing to be synthesized by the part selection unit, so that each part model has a similar shape for each model. Assembly drawing creation can be automated.

  In the case where the drawing creation device 50 is configured by a computer, the drawing describes the processing contents of the dimension setting unit 51, the reference point setting unit 52, the format conversion unit 53, the drawing composition unit 54, and the input / output unit 55 drawing selection unit. The creation program may be stored in the memory of the computer, and the CPU of the computer may execute the drawing creation program stored in the memory.

It is explanatory drawing explaining the drawing creation method of the drawing creation apparatus which concerns on Embodiment 1 of this invention. It is a three-dimensional model used by the drawing creating apparatus according to Embodiment 1 of the present invention. It is a block diagram which shows the structure of the drawing production apparatus which concerns on Embodiment 1 of this invention. It is an individual component drawing used by the drawing creation apparatus according to Embodiment 1 of the present invention. It is the synthetic drawing which the drawing creation apparatus concerning Embodiment 1 of this invention synthesize | combined.

Explanation of symbols

  1, 3, 5 Detailed parts, 2, 4, 6, 13, 23, 31 Reference point, 10 Outline design model, 11, 12, 43, 44 parts, 20 Detailed model, 21, 22, 41, 42 Detailed parts, 50 drawing creation device, 51 dimension setting unit, 52 reference point setting unit, 53 format conversion unit, 54 drawing composition unit, 55 input / output unit.

Claims (5)

Outline design model drawing data in which outline design model dimensional information is added to the outline design model drawing showing the relationship of assembling a plurality of parts, and detailed model drawing showing the relation of assembling detailed parts in which details of the plurality of parts are designed This is a drawing creation apparatus that creates a drawing using the detailed model drawing data and individual part drawing data in which individual part dimension information is added to an individual part drawing that shows only an arbitrary detailed part shown in the detailed model drawing. And
A drawing synthesis unit for extracting the outline design model dimension information of the outline design model drawing data and the individual part dimension information of the individual part drawing data, and creating a composite drawing data attached to the detailed model drawing; A drawing creation apparatus characterized by the above. For an arbitrary detailed part constituting a detailed model, individual part drawing data in which individual part dimension information is given to an individual part drawing showing a similar detailed part having a different detail design from the detailed part, and details including the similar detailed part Using detailed model drawing data of model drawings,
The drawing composition unit extracts outline design model dimension information of outline design model drawing data and the individual part dimension information of the individual part drawing data indicating the similar individual part drawing, and the detailed model drawing including the similar detailed part The drawing creation apparatus according to claim 1, wherein synthetic drawing data attached to the data is created.   When individual part dimension information specifying the dimensions of each part of the detailed part is given to the individual part drawing data, the individual part dimension information is given to the individual part drawing, and for the outline design model drawing data, 2. A dimension setting unit that gives outline design model dimension information to an outline design model drawing when outline design model dimension information designating dimensions of each part of the outline design model is given. The drawing creation apparatus according to claim 2. When position information specifying the position of the reference point is given to the outline design model drawing data, the detailed model drawing data, and the individual part drawing data, the outline design model of the outline design model drawing data according to the position information A reference point setting unit that sets a reference point at a predetermined position of the drawing, the detailed model drawing of the detailed model drawing data, and the individual part drawing of the individual part drawing data,
The drawing composition unit aligns the outline design model drawing data, the detailed model drawing data, and the individual part drawing data based on the reference point set by the reference point setting unit, and generates the combined drawing data. The drawing creation device according to claim 1, wherein the drawing creation device is created. Outline design model drawing data in which outline design model dimensional information is added to outline design model drawing showing the relation of assembling a plurality of parts, showing the relation of assembling detailed parts in which details of the plurality of parts are designed Creating a drawing using the detailed model drawing data of the detailed model drawing and the individual part drawing data in which the individual part dimension information is added to the individual part drawing showing only the arbitrary detailed parts shown in the detailed model drawing A program for functioning as a device,
Extracting the outline design model dimension information of the outline design model drawing data and the individual part dimension information of the individual part drawing data to function as a drawing composition unit that creates composite drawing data attached to the detailed model drawing Drawing creation program.

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