JPH08180078A - Evaluation support system - Google Patents

Abstract

PURPOSE: To automatically prepare design drawings or the like to which dimension numbers are written from CAD drawing data and to reduce product evaluation operations. CONSTITUTION: The dimension number allocation part 113 of an automatic numbering system 11 reads dimension information from the CAD drawing data 12 prepared by a CAD system and detects positions and their number where design dimensions are imparted on the design drawing expressed by graphic information corresponding to the dimension information. Then, corresponding to the detected result, the dimension numbers of consecutive values are automatically allocated to the pertinent positions on the design drawing displayed on a screen. Thus, the need of troublesome operations such as printing out design drawing data and successively writing many dimension numbers by manual operations is eliminated and the design drawing with the dimension numbers to be presented to a structure design maker or the like is easily prepared.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an evaluation support system for supporting the evaluation of shapes and dimensions of manufactured products such as molded products and press parts, and particularly, to design drawing data created by a CAD system. The present invention relates to an evaluation support system that provides product evaluation support.

[0002]

2. Description of the Related Art In recent years, CAD (Computer ai)
With the development of the ded design system, structural design work and design data verification work of various mechanical parts such as molded products and press parts have been automated. As a result, the structural design maker has dramatically reduced the design process and the reliability of the design data.

However, conventionally, the evaluation of the manufactured product has not been automated, and whether the manufactured product has the shape and size according to the design drawing in the parts manufacturers such as molded products and press parts. A great deal of time and labor have been required to check whether or not the product has been checked and to create product evaluation data based on the check result.

In particular, when a component size measurement table is prepared as evaluation data, the preparation work is very difficult. The component size measurement table is to fill in design dimensions, tolerances, measured values showing the dimension values when the manufactured components are actually measured, and evaluation results for each part of the manufactured components. .

When creating this part size measurement table,
First, the dimension number is written in the measurement target portion on the design drawing, and the product is measured for each dimension number. And
Enter the design dimensions, tolerances, and measured values corresponding to each dimension number in the component dimension measurement table, and finally, from the tolerances and measured values, determine whether the manufactured product is the dimension corresponding to the design drawing. And fill in the evaluation results. The design drawing in which the dimension number is written and the component dimension measurement table are submitted to the structural design manufacturer at the time of product delivery.

Recently, in many cases, it is obligatory for a component manufacturer to submit such a component dimension measurement table and a design drawing in which a dimension number is written to a structural design maker. Creation is a heavy burden.

[0007]

As described above, conventionally, the evaluation of manufactured products has not been automated, and it is not possible to write dimension numbers on design drawings or create a component dimension measurement table. There were drawbacks that required a lot of time and effort.

The present invention has been made in view of the above circumstances, and enables a computer to realize evaluation support for products based on design drawing data created by a CAD system, and particularly for evaluation of manufactured products. An object of the present invention is to provide an evaluation support system capable of significantly reducing the work time required to create a design drawing in which a dimension number is written and a component dimension measurement table.

[0009]

Means and Actions for Solving the Problems
An evaluation support system that supports the evaluation of the shape and dimensions of manufactured products using a computer, and inputs design drawing data including graphic information and dimension information, and reads the dimension information from the input design drawing data. According to the dimension information reading means and the dimension information read by the dimension information reading means, the position and the number of the design dimension given on the design drawing represented by the graphic information are detected, and the corresponding position on the design drawing is detected. And numbering means for displaying the design drawing with the dimension numbers on the screen by allocating the dimension numbers of consecutive values to the.

Further, according to the present invention, for each dimension number assigned by the numbering means, a design dimension value, a tolerance value, a measured dimension value and a pass / fail judgment result corresponding to a portion designated by the dimension number are entered. A component dimension measurement table creating means for creating a component dimension measurement table having columns and displaying it on the screen, and reading the design dimension value and the tolerance value of the portion corresponding to each dimension number from the dimension information of the design drawing data, Means to fill in the dimension measurement table, and when the measured dimension value is input, the corresponding product is determined based on the input measured dimension value and the corresponding design dimension value and tolerance value of the component dimension measurement table. It further comprises means for making a pass / fail judgment of a part to be entered, and writing the judgment result in the part size measurement table so that the part size measurement table can be automatically generated. .

In the evaluation support system according to the present invention, the size information is read from the design drawing data created by the CAD system, and the position where the design size is given on the design drawing represented by the graphic information according to the size information. And the number is detected. Then, according to the detection result, dimension numbers having consecutive values are automatically assigned to corresponding positions on the design drawing.

Therefore, it is not necessary to print out the design drawing data and successively write the dimension numbers at the dimension measurement points, and it is possible to easily create a design drawing with a dimension number to be submitted to a structural design maker or the like. The structural design maker can recognize the evaluation result by comparing the design drawing with the dimension number with the component dimension measurement table or the like.

A component dimension measurement table is automatically generated using the assigned dimension numbers, and design dimensions and tolerance values read from the design drawing data are entered therein. Then, when the measured dimension is entered, a pass / fail judgment is made based on the input measured dimension value and the corresponding design dimension and tolerance of the component dimension measurement table, and the determination result is entered in the component dimension measurement table. It Therefore, all the troublesome work other than the dimension measurement becomes unnecessary, and the automation of the component dimension measurement table creation can be realized.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the basic configuration of an evaluation support system according to an embodiment of the present invention. This evaluation support system is a computer application system that supports on-computer evaluation work such as shape and size of manufactured products such as molded products and press parts by using design drawing data created by the CAD system. Yes,
-Runs on a personal computer or workstation.

The program of this evaluation support system includes
It is equipped with an auto-numbering function that automatically assigns dimension numbers to each dimension measurement point on the design drawing, and a function that automatically generates a component dimension measurement table.

In the following, since the typical function of this evaluation support system is the auto numbering function, the evaluation support system will be referred to as the auto numbering system,
The details will be described.

As shown in the figure, the automatic numbering system 11 comprises a dimension drawing screen display section 111, a dimension measurement table screen display section 112, and a dimension number allocation section 113.

The dimension drawing screen display unit 111 displays a dimension drawing (on the display monitor of the computer) on the basis of the graphic information and the dimension information included in the design drawing data (hereinafter referred to as CAD drawing data) 12 created by the CAD system. Display the design screen. Further, the dimension drawing screen display unit 111 displays the dimension number generated by the dimension number allocation unit 113 at the corresponding position of the dimension drawing displayed on the screen.

The dimension measurement table screen display section 112 is used for the dimension information of the CAD drawing data 12 and the dimension number allocation section 11.
A component dimension measurement table is generated based on the dimension number generated by 3, and is displayed on the display monitor of the computer. The parts size measurement table is
It consists of columns such as tolerance, measurement size, and pass / fail.

The dimension number of the corresponding portion is entered in the dimension number column. Also, in the design dimensions and tolerance columns,
The design dimension of the corresponding portion read from the dimension information of the CAD drawing data 12 and the value indicating the tolerance are respectively entered.

In the item of measurement size, a value actually measured by an operator and input from a keyboard of a computer or a value measured by a measuring instrument such as a digital caliper is directly input from the measuring instrument. In the pass / fail column,
The result of the pass / fail judgment based on the design dimension and the tolerance and the measured dimension is entered.

Except for design dimensions, the dimension measurement table screen display section 1
12 automatically fills in the component size measurement table. The dimension number allocation unit 113 analyzes the dimension information of the CAD drawing data 12 to detect the dimension measurement points, that is, the positions and the number of the design dimensions given on the design drawing, and the dimension measurement locations on the design drawing, respectively. Automatically choke consecutive dimension numbers on.

The data structure of the CAD drawing data 12 will be described here. As the CAD drawing data 12,
For example, DXF files developed by Autodesk are used. The auto numbering system 11
Information about dimensions is extracted from the DXF file, and the dimension numbers are choreographed to dimension drawings (design drawings including dimension values), and a component dimension measurement table is automatically generated.

The format of the DXF file is open to the public, and is composed of a header section 121, a table section 122, a block section 123, and an entity section 124, as shown in the figure.

Graphic information and the like are defined in the block section 123, and dimension information and the like are defined in the dimension and text data of the entity section 124. The dimensional information includes design dimension values, tolerances, dimension types (usually diameters, corners, angles, chamfers, arcs, etc.), and the XY coordinate indicating the arrangement position of the dimension values on the design drawing.
Analyzes the dimension information and detects the positions and the number of design dimensions provided on the design drawing.

Next, FIG. 2 shows an example of the dimension drawing screen 13 and the dimension table screen 14 displayed on the display monitor. The dimension drawing screen 13 and the dimension table screen 14 are selectively switched and displayed according to the purpose. Screen switching is
This is done by pressing the ESC key on the keyboard.

The dimension drawing screen 13 displays the CAD drawing data 12
The graphic data is displayed and can be freely enlarged / reduced. On the dimension table screen 14, a list of dimension values read from the CAD drawing data 12, tolerances, input measurement values, and pass / fail judgments is displayed in a table format. On this dimension table screen 14, it is possible to input, correct, and delete dimension values, tolerances, measured values, and revisions.

Next, referring to FIG. 3, the flow of the entire evaluation work using the auto numbering system 11 will be described. First, the CAD drawing data 12 is passed from the designer of the structural design maker to the manufacturer by a floppy disk or the like. In the manufacturer, CAD drawing data 12
In addition to manufacturing various mechanical parts, etc., take in the data on the personal computer and automatically choreograph the dimension number on the screen of the computer.
A parts size measurement table is also created at the same time.

FIG. 4 shows how the dimension numbers are choreographed and the component dimension measurement table is created. As shown in FIG. 4A, the dimension number is given near the design dimension value on the drawing. In FIG. 4 (A), two dimension numbers "14" and "15" are shown, but the value of the dimension number is a continuous value whose initial value is the value designated by the operator. .
As shown in FIG. 4B, design dimension values and tolerances for dimension measurement points designated by the dimension number values are automatically entered in the component dimension measurement table.

Input of measured values to this component size measurement table is as follows.
It can be performed by a key input operation by an operator or directly from a digital caliper connected to a computer. As a result, the result of the pass / fail judgment is automatically entered in the pass / fail column of the component dimension measurement table, and the component dimension measurement table is completed. In addition, the input of the measured value is not always the dimension table screen 14
It is not necessary to perform the above, and it can be performed while referring to the dimension drawing screen 13.

The drawing data to which the dimension numbers are assigned is passed as numbering data to the structural design maker, and the component dimension measurement table is also passed to the structural design maker. In order to distinguish the numerical value of the dimension number in the numbering data from the dimension value, it is desirable to use a font different from the dimension value, or to attach an L-shaped modifier character or the like beside the numerical value of the dimension number.

FIG. 5 shows the dimension table screen 14 and the dimension drawing screen 1
The link relationship with 3 is shown. That is, in the auto numbering system 11, the link relationship between each dimension number in the component dimension measurement table and the dimension number position on the design drawing is defined and held as link information.

On the part size measurement table, for example, size number "1"
If you press the [Enter] key with 4 "being specified with the cursor, the part corresponding to the dimension number 14 in the dimension drawing will be called up on the display screen by referring to the link information, and the dimension number 14 will be enlarged and highlighted. Light is displayed.

As a result, it becomes possible to easily confirm to which part on the design drawing the value on the component dimension measurement table actually corresponds. Next, with reference to the flowchart of FIG. 6, a series of processing procedures from the execution of the auto numbering system 11 on the computer to the end thereof will be described.

When the auto numbering system 11 is executed, first, the CAD drawing data 12 is read (step S11). Next, when a predetermined command and a choreography start number are keyed in, dimension number choreography processing and component dimension measurement table creation processing are started (step S12).

In the choreographing process of dimension numbers, first, CA
The dimension information is read from the D drawing data 12, and the dimension information is analyzed. As a result, the XY coordinate values and the number of design dimensions to which the design dimensions are assigned are detected on the design drawing, and consecutive values with the choreography start number as the leading number are detected at each of the corresponding positions on the displayed design drawing. Dimension number is choreographed and displayed on the blueprint displayed on the screen.

At this time, the design dimension value and the tolerance value are also read from the dimension information. As the design dimension value,
The number following the symbol "**" described in the dimension information of the CAD drawing data 12 is used, and as the tolerance value, in the case of a plus tolerance, the number following the symbol "+ **" and the minus tolerance In the case, the number following the symbol "-**" is used, and in the case of plus or minus tolerance, the number following the symbol "%% P **" is used.

Then, the component dimension measurement table is generated using the dimension values and the tolerance values thus read. A predetermined standard tolerance value is used for the portion where the tolerance value is not defined in the dimension information. This standard tolerance value is defined for each type of dimension, and is described in the tolerance table in the auto numbering system 11.

Next, after unnecessary dimension numbers are deleted and dimension values and tolerances are corrected on the dimension drawing screen 13 or the dimension table screen 14 by work (step S13), the dimension screen 13 is displayed. The operator actually measures the dimensions of the product while referring to, and the measured values are sequentially input to the corresponding locations on the dimension table screen 13 (step S1).
4, S15).

At this time, the acceptance / rejection determination is automatically executed, and the result of the acceptance / rejection determination is entered into the component dimension measurement table on the screen in three steps by comparing the design dimension value and the tolerance with the measured value. If the measured value belongs to 0 to 90% of the tolerance, the letter "OK" indicating the 1st pass is displayed in white, for example, and if the measured value belongs to 90 to 100% of the tolerance, "OK" indicates the 2nd pass.
The character "*" is displayed in yellow, and if it is out of tolerance, the character "NG" indicating disqualification is displayed in red.

Finally, the component dimension measurement table is output and the process is terminated (step S16). As mentioned above,
In the auto-numbering system 11 of this embodiment, the dimension information is read from the CAD drawing data 12 created by the CAD system, and the design dimension is given on the design drawing represented by the graphic information according to the dimension information. The position and number are detected. And
According to the detection result, consecutive dimension numbers are automatically assigned to the corresponding positions on the design drawing.

Therefore, the troublesome work of printing out the design drawing data and successively writing in many dimension numbers by hand becomes unnecessary, and the design drawings with dimension numbers to be submitted to the structural design maker can be easily created. You can The structural design maker can recognize the evaluation result by comparing the design drawing with the dimension number with the component dimension measurement table or the like.

A component dimension measurement table is automatically generated using the assigned dimension numbers, and design dimensions and tolerance values read from the design drawing data are entered therein. Then, when the measured dimension is entered, a pass / fail judgment is made based on the input measured dimension value and the corresponding design dimension and tolerance of the component dimension measurement table, and the determination result is entered in the component dimension measurement table. It Therefore, all the troublesome work other than the dimension measurement becomes unnecessary, and the automation of the component dimension measurement table creation can be realized.

[0044]

As described above, according to the present invention, it becomes possible to realize product evaluation support by a computer on the basis of design drawing data created by a CAD system. It is possible to greatly reduce the working time required to create the design drawing in which the dimension number is written and the component dimension measurement table.

[Brief description of drawings]

FIG. 1 is a block diagram showing a basic configuration of an auto numbering system according to an embodiment of the present invention.

FIG. 2 is a diagram showing a dimension drawing screen and a dimension table screen provided by the auto numbering system of the embodiment.

FIG. 3 is a view for explaining the flow of the entire evaluation work using the auto numbering system of the embodiment.

FIG. 4 is a view for explaining the principle of a dimension number choreography process and a component dimension measurement table creation process executed by the auto numbering system of the embodiment.

FIG. 5 is a diagram for explaining a link relationship between a dimension table and a dimension diagram in the auto numbering system of the embodiment.

FIG. 6 is a flowchart for explaining a series of processing procedures executed by the auto numbering system of the embodiment.

[Explanation of symbols]

11 ... Auto numbering system, 12 ... CAD drawing data, 13 ... Dimension drawing screen, 14 ... Dimension table screen, 111
... Dimension drawing screen display unit, 112 ... Dimension measurement table screen display unit.

Claims (6)

[Claims] 1. An evaluation support system for supporting the evaluation of the shape / dimension of a manufactured product by using a computer, wherein design drawing data including graphic information and dimension information is input, and the input design drawing data is input. Dimension information reading means for reading dimensional information from the dimensional information, and, according to the dimensional information read by the dimensional information reading means, the position and the number of the design dimension given on the design drawing represented by the graphic information are detected, An evaluation support system, comprising: numbering means for allocating consecutive dimension numbers to corresponding positions on the figure and displaying a design drawing with dimension numbers on a screen. 2. A component having a column for entering a design dimension value, a tolerance value, a measurement dimension value, and a pass / fail judgment result corresponding to a location designated by the dimension number assigned to each dimension number assigned by the numbering means. A component dimension measurement table creating means for creating a dimension measurement table and displaying it on the screen, and reading the design dimension value and the tolerance value of the portion corresponding to each dimension number from the dimension information of the design drawing data, to the component dimension measurement table Means to fill in, and when the measured dimension value is input, pass / fail of the corresponding part of the product based on the input measured dimension value and the corresponding design dimension value and tolerance value of the component dimension measurement table. The device according to claim 1, further comprising means for making a determination and writing the determination result in the component dimension measurement table so that the component dimension measurement table can be automatically generated. Evaluation support system. 3. The means for writing the pass / fail judgment result in the component size measurement table divides the pass / fail level into a plurality of stages and writes the result in the component size measurement table. Evaluation support system. 4. A unit that defines a link relationship between each dimension number of the component dimension measurement table and a dimension number position on the design drawing to generate link information, and a dimension number is specified on the component dimension measurement table. 3. The evaluation device according to claim 2, further comprising means for calling, on the display screen, a portion of the design drawing to which the designated dimension number is assigned by referring to the link information. Support system. 5. A means for inputting measurement data output from a digital measuring instrument for measuring the product and inputting the measurement data into a measurement dimension column of the component dimension measurement table. Evaluation support system described in 2. 6. An evaluation support system for assisting the evaluation of the shape and size of a manufactured product by using a computer, which is a means for inputting design drawing data and reading information on dimensions from the input design drawing data. And a means for creating a dimension table including design dimension values and tolerances of each part on the drawing described by the design drawing data from the read dimension information.