JPH086987A - Design support device - Google Patents

Abstract

PURPOSE:To level up design result and to shorten a design provide, by comparing the length along the reference line of the drawing viewed from each direction, inspecting the correction of errors of the drawing and displaying the result when an inputted drawing is the projection drawing of an object. CONSTITUTION:The storage part 4 of a magnetic disk device, etc., stores design data including the drawing inputted by an input part 2 in a data storage part 16. When an inputted drawing is a projection drawing in which the drawings viewing an object from each direction are arrayed by a prescribed rule, a drawing data recognition part 11 extracts the maximum values and the minimum values of an X-coordinate and a Y-coordinate from the coordinate data of contour lines composing a floor plan. Also in an elevation view, the maximum values and the minimum values of the X- coordinate and the Y-coordinate are extracted in the same way. By these data, the maximum width of the X-axis direction of the floor plan and the maximum width of the X-axis direction of the elevation view are calculated. By comparing them, the entered dimension errors of the drawing are detected. By performing inspections by comparing the elevation view and the right side elevation, and the floor plan and the right side elevation, etc., these inspection results are outputted to a display 8, etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a design support apparatus for supporting a drawing design processing operation using a computer-based drawing creation processing system (CAD system).

[0002]

2. Description of the Related Art When designing various products by a manufacturer, drawings and dimensions of objects, materials, processing methods, etc. are entered in design drawings. A drawing creation processing system using a computer, that is, a CAD system is widely adopted for such design work. In a CAD system, drawing data and various character data are sequentially input to a computer to create a design drawing. If it is a design drawing of a part, specify the machine that processes the part along with the three-view drawing, specify the precision when processing, and enter the cutting position, the position to make a hole, the dimensions, etc. To do.

Based on the design drawing thus obtained, a product is prototyped, and if there is a problem, a part of the design is changed again. By repeating such work, the final design is completed.

[0004]

By the way, the conventional design support apparatus as described above has a problem to be solved because the following design error is likely to occur. For example, there are materials that cannot be manufactured by a processing machine specified in a design document and can only be processed manually. If such a material is specified, the processing cost will increase. Also,
Some of the materials are special and require a long period of time to purchase, resulting in a long manufacturing period. Designers carry this kind of information as a manual, and proceed with the design while recognizing it. However, in a product having a complicated configuration, the types of materials used are extremely large, and it is a great burden for the designer to proceed with the design while checking the manual for all of them. Therefore, even if a prototype is made once, a relatively large number of processes such as redesigning due to a design error are repeated, which causes a rise in design cost. There is also a problem that the design period becomes long.

Further, when the structure of the object becomes complicated, these drawings also become complicated. Therefore, an error may occur in the size and other information to be written in the drawing. However, for example, if the dimensions are incorrect, a wrong part or the like is manufactured in the trial production stage, and this requires re-design or the like again.

[0006]

The present invention adopts the following constitution in order to solve the above-mentioned problems. The apparatus of the present invention includes an input unit for inputting design data including a drawing, a storage unit for storing the input design data, and a drawing in which drawings in which an object viewed from each direction are arranged according to a predetermined rule are projected. In the case of the drawing, the inspection unit for comparing the lengths along the reference line of the drawing seen from each direction and inspecting whether the drawing is correct, and the output unit for displaying and outputting the inspection result of the inspection unit are provided.

Alternatively, in the apparatus of the present invention, an input unit for inputting design data including a drawing, a storage unit for storing the input design data, and a structure of an object described by characters in the design data. And an output unit for displaying and outputting the inspection result of the inspection unit by recognizing the information regarding the information, comparing and collating with the information regarding the structure of the corresponding target object added in the drawing, and inspecting the correctness. The material information prepared in advance for the inspection can be used. Also, this material information can be displayed together with the design data.

[0008]

The design data is input using the input unit, stored in the storage unit, and inspected by the inspection unit. For example, the dimensions of each part of the front view, the side view, and the plan view are compared, and if there is any deviation, it is displayed. The information written in letters in the design data is also compared with the information added in the drawings. By referring to the material information prepared in advance, it is possible to prevent the selection error of the material and the standard.

[0009]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 is a block diagram showing an embodiment of the design support device of the present invention. This apparatus includes a data processing unit 1 that executes design support processing, an input unit 2, an output unit 3 and a storage unit 4 connected to the data processing unit 1. The input section 2 is provided with a keyboard 5 and a mouse 6. This gives C
Design data is input using the AD system and various information display requests are made. The output unit 3 is provided with a printer 7 and a display 8. The display 8 is used to display the design data input at the time of design data input work or the like. In addition to this, data necessary for design support is displayed. The printer 7 is used for outputting such information and inspection results of design data.

The data processing unit 1 includes a drawing data recognition unit 1
1, a character data recognition unit 12, an inspection unit 13, and an information guidance unit 14 are provided. The drawing data recognition unit 11 includes an input unit 2
Is a part for recognizing the drawing data included in the design data input using. In the apparatus of the present invention, specifically, the drawing data recognition unit 11 obtains the maximum value and the minimum value of the X coordinate and the Y coordinate with respect to the outer frame of the drawing, for example, so that a projection drawing as described later is correct. Executes inspection etc. of whether it is written. The character data recognition unit 12 is a unit that searches and processes character data in the design data. this is,
This is a part for recognizing the material, dimensions, and other information of the object that are collectively input in the lower right of the design drawing. This is used to judge the adequacy of the design, for example, by comparing information such as material and hardness for each material prepared in advance.

The inspection section 13 is a section for judging whether or not there is an error in the design data based on various information in the design data as described above. If there is a request to display certain information using the input unit 2, the information guiding unit 14 stores in the storage unit 4.
This is a part for performing control for reading out certain information from and displaying it on the output unit 3. Each of the units constituting the data processing unit 1 is composed of a program or the like prepared for executing a certain processing operation. Storage unit 4
Is constituted by a storage device such as a magnetic disk device. The data storage unit 16 shown in FIG. 1 stores design data including drawing data and character data. The material information storage unit 17 stores material information that associates various additional information such as the material quality and size of the material. The inspection result storage unit 18 stores the result of the inspection performed by the inspection unit 13.

FIG. 2 shows a concrete external view of the apparatus of the present invention. The hardware of the device of the present invention is constituted by a general personal computer system as shown in this figure, for example. That is, the device has a display 8,
It is composed of a keyboard 5, a mouse 6, a printer 7, a storage unit 4, and the like. The storage unit 4 is configured by an external hard disk device or the like. The display 8 displays design data 30 as shown in this figure. Here, the drawing data 31, the character data 32, and the like are included. Material information 17A is stored in the storage unit 4.

FIG. 3 shows an operation flowchart of the apparatus of the present invention. The device of the present invention operates according to the procedure shown in this figure. The specific contents will be explained while explaining each procedure. First, in step S1, as shown in FIG.
Design data is input using the keyboard 5 and the mouse 6 as shown in FIG. Here, the drawing data recognition unit 11 shown in FIG. 1 recognizes the contents of the drawing data. Further, the character data recognition unit 12 recognizes the content of the character data (steps S2 and S3). Then, first, in step S4, the correctness of the drawing is inspected.

Generally, when drawing, various drawings such as a plan view, a side view, a front view and a rear view are prepared.
In this case, there may be a case where the dimensions of the corresponding parts in each drawing are incorrect. In the case of the design data shown in FIG. 2, for example, the lateral width L of the plan view may be described differently from the lateral width of the front view. The drawing data recognition unit 11 shown in FIG. 1 extracts the maximum value and the minimum value of the X coordinate and the Y coordinate from the coordinate data of the contour line forming the plan view. Also in the front view, the maximum and minimum values of the X and Y coordinates are similarly extracted. Based on these data, the maximum width in the X-axis direction of the plan view and the maximum width in the X-axis direction of the front view are calculated. By comparing them, the dimensional error in the drawing is detected. The front view and the right side view, and the plan view and the right side view are compared in the same manner.

FIG. 4 is an explanatory view of types of projection views. As shown in this figure, there are various kinds of projection drawings generally used for design drawings. For example, (a)-
What is shown in (d) is a projection view by each different method. Therefore, it is preferable to confirm which drawing is used for the target design data, and perform dimension comparison and the like according to it. Information such as what kind of drawing method is used is included in the character data 32 shown in FIG. 2, and the inspection unit 13 shown in FIG. 1 automatically recognizes this and processes it. To do. If, as a result of such inspection, it is found that the width in the X-axis direction between the plan view and the front view is different, that fact is indicated.
Is output to

Returning to FIG. 3 again, after the correctness / incorrectness inspection of the drawing, the comparison inspection of the information on the structure of the object is performed in step S5. This inspection has contents such as whether or not there is a contradiction between the information written in the character data 32 in the design data shown in FIG. 2 and the information written in the drawing data 31.

FIG. 5 is an explanatory view of an information comparison example regarding the structure of the object. For example, it is assumed that the character data related to the parts marked with is displayed as shown in FIG. If the plate thickness is 20 mm, then 2 for that part.
Inspect whether 0 mm is displayed.

Also, for example, the plate thickness is 20 mm, but considering the scale, the thickness actually drawn as a drawing is 2 mm.
It must be mm. In such a case, it is possible to perform an inspection whether the thickness is 2 mm. It is possible to adopt a method in which the parts to be subjected to the comparison inspection are attached with symbols such as, or a command is inputted at the operator's discretion.

Returning to FIG. 3 again, in step S6 the material information is read from the material information storage unit. The material information storage unit 17 shown in FIG. 1 stores the following material information, for example. FIG. 6 shows an example of material information (No. 1). In this example, the processing machines that process certain materials are A, B, and C.
Assuming that a table was prepared, it shows how thick each processing machine can process each material. If such information is prepared in advance and the corresponding material is designated at the design stage and the processing method is indicated, it is automatically inspected whether or not the processing method in design is incorrect. This reduces the burden on the designer and prevents design errors from occurring. Usually, materials, processing methods, etc. are written in the character data 32 in the design data shown in FIG. Therefore, the inspection unit 13 shown in FIG. 1 can read out the corresponding item from the character data and inspect it based on the information shown in FIG.

FIG. 7 shows an example of material information (No. 2). Here, the material name, prohibited processing, and rank are shown. When the code is "0", the rank cannot be manufactured, when the rank is "1", the manufacture is possible but the cost is high, and when the rank is "2", the material is not recommended. . That is, since such a rank exists, the designer avoids the selection of materials that cannot be manufactured,
Choose the cheapest material possible. In addition, there are cases where the selection of the material is not recommended due to the manufacturer's own circumstances, and the design should be made to avoid this. Such a design can be relatively easily performed by a veteran designer, but the use of the assisting apparatus of the present invention enables the same accurate judgment even if not skilled. Such material names and processes are also written in the character data 32 shown in FIG.

FIG. 8 shows an example of material information (3). Here, the material name, plate thickness and flag are displayed. This flag indicates whether each material is a standard product or a semi-standard product. Such information indicates which thickness of each material is a standard product and can be used. This inspection makes it possible to encourage design using low-cost standard products.

FIG. 9 shows a display of material information and an explanatory view of the inspection operation. The material information as described above can be displayed by opening the window 25 in a part of the display 8 by the designer appropriately selecting. This is executed by the information guide unit 14 by reading out necessary information from the material information storage unit 17. For example, at the design stage, if it is desired to design while looking at various kinds of information as described above, the information guide unit 14 is requested to display necessary information. For example, it is possible to display a guide such as what kind of thickness and what kind of processing is appropriate in a range of a particular plate thickness with a particular material. In addition,
Such display control can be included in the program of the information guide unit 14 in advance, but it is preferable to use a macro program or the like so that the user can freely customize the display control. When the material, the processing method, or the like is selected while displaying the material information in this way, the inspection unit 13 recognizes the selection result and executes the inspection as described above.

FIG. 10 shows an explanatory diagram of the inspection result display output screen. For example, the inspection result is displayed on the display 8 as shown in this figure. That is, when there is an error in the processing method, the title "processing method error" is displayed and a comment "This material cannot be processed" is output. If there is a problem with the material, the title "Material error" is displayed and "There is no AA of thickness XX" is displayed. By this, the designer corrects the design of the part immediately and completes the design data.

As a result, it is not necessary for the designer to be familiar with all kinds of information at all times, and it is possible to prevent the design of a product with a high cost or a product having a quality problem. Further, since it is possible to prevent the process from trial production to re-design due to a design error, the design period can be shortened and the design cost can be reduced.

The present invention is not limited to the above embodiments. The method of comparing the dimensions of each part of the projection drawing in which the object is viewed from each direction is arranged according to a certain rule is simply the X axis, Y
It is possible not only to compare the lengths along a reference line such as an axis, but also to specify an appropriate reference point and the like, and perform arithmetic processing on the lengths and the like between them to make a comparison. In addition, when recognizing the information on the structure of the object written in characters in the design data and comparing it with the corresponding information added in the drawing and performing a correct / wrong inspection, it is only necessary to match the data. No, it can include size comparisons and other validation tests. Further, the inspection result may be reflected by forcibly entering predetermined information in the character data in the corresponding portion in the drawing data. Further, the material information may be composed of a processing method of the object, material characteristics, and other various kinds of information. How to display the content is also optional,
The inspection result can be displayed on the display or can be freely displayed on the printer.

[0026]

The design support apparatus of the present invention described above is
Since the contents can be inspected in order at the design stage and an error can be notified to the designer each time, the design can be smoothly performed with no error and with a certain quality or more. Therefore, it is possible to improve the level of the design result, shorten the design period, and reduce the design cost.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of a design support device of the present invention.

FIG. 2 is a specific external view of the device of the present invention.

FIG. 3 is an operation flowchart of the device of the present invention.

FIG. 4 is an explanatory diagram of types of projection views.

FIG. 5 is an explanatory diagram of an information comparison example regarding the structure of an object.

FIG. 6 is an explanatory view (part 1) of an example of material information.

FIG. 7 is an explanatory diagram (part 2) of an example of material information.

FIG. 8 is an explanatory diagram (part 3) of an example of material information.

FIG. 9 is a diagram for explaining material information display and inspection operation.

FIG. 10 is an explanatory diagram of an inspection result display output screen.

[Explanation of symbols]

 1 Data Processing Section 2 Input Section 3 Output Section 4 Storage Section 13 Inspection Section 14 Information Guidance Section 16 Data Storage Section 17 Material Information Storage Section 18 Inspection Result Storage Section

Claims (4)

[Claims] 1. An input unit for inputting design data including a drawing, a storage unit for storing the input design data, and the drawings in which a view of an object viewed from each direction is arranged according to a predetermined rule. In the case of a projection drawing, an inspection unit that compares the lengths along the reference line of the drawing seen from each direction and inspects whether the drawing is correct, and an output unit that outputs the inspection result of the inspection unit Design support device characterized by. 2. An input unit for inputting design data including a drawing, a storage unit for storing the input design data, and information for recognizing the structure of an object described by characters in the design data. And an inspection unit for inspecting whether the object is correct or incorrect by comparing and collating with the information on the structure of the corresponding target object added in the drawing, and an output unit for displaying and outputting the inspection result of the inspection unit. Design support device. 3. An input unit for inputting design data including a drawing, a storage unit for storing the input design data, and information on a structure of an object described by characters and drawings in the design data. It is equipped with an inspection unit that recognizes and compares and collates with the material information related to the processing method of the object prepared in advance, and inspects whether the processing method is correct or incorrect, and an output unit that displays and outputs the inspection result of the inspection unit. Characteristic design support device. 4. An input section for inputting design data including a drawing, a storage section for storing the input design data, and material information including material and characteristics of an object described in the design data in advance. The accumulated material information storage unit, an information guide unit for reading out and displaying the material information in the material information storage unit upon request, the material information stored in the material information storage unit, and the correspondence described in the drawings. A design support apparatus comprising: an inspection unit that compares and collates material information regarding an object to be inspected and inspects whether it is correct or incorrect;