JPH05151287A - Method and device for forming circular arc length measure - Google Patents

Abstract

PURPOSE:To make it possible to easily write circular arc length measure by simple operation and to sharply reduce operator's operation load. CONSTITUTION:A measuring point specifying part 13 allows an operator to specify the entering position of a measure line on a circular arc to which a circular arc length measure line is to be entered on a drawing by interactive operation with the screen of a display 3. A measure line position specifying part 14 allows the operator to specify a measure line entering position by interactive operation. A write control part 16 writes circular arc length measure line data on the drawing data displayed on the display 3 and stored in a memory 15 in accordance with the measuring point position on the circular arc which is obtained from the specifying part 13 and the measure line entering position obtained from the specifying part 14.

Description

Detailed Description of the Invention

[0001]

The present invention relates to CAD (computer-aid).
The present invention relates to an ed design) system, and more particularly to an arc length dimension creating method and apparatus for writing arc length dimension lines in drawing data created by a CAD system.

[0002]

2. Description of the Related Art When using a CAD system, C
It is often the case that the length of an arc between two points on the circumference of a circle, an arc, a hole symbol, or the like, that is, the arc length dimension, is to be written in the drawing data created by the AD system. Conventional CA
The D system was not provided with a function of automatically writing the arc length dimension line. Therefore, conventional CA
If you want to write the arc length dimension in D system,
Similar to a normal figure, a dimension extension line drawn from both end points of the target arc and dimension lines along the target arc are drawn between these dimension extension lines to create the arc length dimension.

[0003]

As described above, in the conventional CAD system, the arc length dimension must be drawn or entered individually for the dimension line, the dimension extension line, the dimension value, etc. The operator was forced to perform a very complicated operation to write the arc length dimension.

The present invention has been made in view of the above circumstances, and a method for creating an arc length dimension which can easily write the arc length dimension by a simple operation and can remarkably reduce the operation burden on the operator. The purpose is to provide a device.

[0005]

According to the arc length dimension creating method of the present invention, in writing the arc length dimension on the drawing data in the CAD system, a selection step for selecting the entry of the arc length dimension and a dimension line are selected. Instructing step for instructing the position of the measurement point on the arc to be entered and the dimension line on the drawing, and writing the arc length dimension line data on the displayed and stored drawing data based on the instruction by the instructing step. And a writing step.

The arc length dimension creating apparatus according to the present invention is a CA
In the arc length dimension creating device for writing the arc length dimension on the drawing in the D system, the command input means for inputting a command including the arc length dimension writing command, the measurement point on the arc to which the dimension line is to be written, and An instruction means for instructing the position of the dimension line on the drawing, and a writing means for writing the arc length dimension line data on the displayed and stored drawing data based on the instruction by the instruction means. Is characterized by.

[0007]

In the method and apparatus for creating the arc length dimension of the present invention, when the arc length dimension is entered on the drawing data in the CAD system, the entry of the arc length dimension is selected, and the dimension line is to be entered on the arc. By instructing the measurement point and the position of the dimension line on the drawing, and writing the data of the arc length dimension line on the displayed and stored drawing data based on the instruction, it is easy and simple operation. The arc length dimension can be written in.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of a CAD system incorporating an arc length dimension creating apparatus according to an embodiment of the present invention. In the CAD system of the present embodiment, when drawing the arc length dimension on the drawing data, the measurement points on the arc to which the dimension line is to be entered and the position of the dimension line on the drawing are designated and displayed and stored. The arc length dimension line data can be written on the drawing data based on the instruction.

The CAD system shown in FIG. 1 includes a CAD processing unit 1, an input device 2, a display 3, an output device 4 and a storage device 5. The CAD processing unit 1 is a CPU
A central processing unit (not shown) is included, and CAD processing including arc length dimension creation processing is executed. Input device 2
Includes an operation input device such as a keyboard and a pointing device such as a mouse, and inputs operation input information by an operator and other external information necessary for CAD processing to the CAD processing unit 1. The display 3 is a CAD processing unit 1.
Necessary information such as processed image information according to the above, information related to input by the input device 2, and the like are displayed. The output device 4 includes a plotter, a printer, or the like, and outputs the image information processed by the CAD processing unit 1 as a hard copy. Storage device 5
Is a disk device such as a hard disk device or the like, and operates in association with the CAD processing unit 1 to store data such as image information before, after, and during processing as necessary.

In this case, the CAD processing unit 1 uses the normal CA.
In addition to the configuration for executing the D process, the display control unit 1 for executing the arc length dimension creating process according to the embodiment of the present invention.
1, a command input unit 12, a measurement point designating unit 13, a dimension line position designating unit 14, a memory 15 and a writing control unit 16.

The display controller 11 controls the display on the display 3. Under the control of the display control unit 11, drawing data and the like are displayed on the screen of the display 3. The command input unit 12 performs a process for allowing the operator to input a command including a circular arc length dimension writing command by an interactive operation with the screen of the display 3, for example. For this reason, the command input unit 12 may use the display control unit 1 as necessary.
Control 1

The measuring point designating section 13 functions at least when the command for entering the arc length dimension is inputted by the command input section 12, and the arc length dimension is indicated on the drawing by an interactive operation with the screen of the display 3, for example. A process for causing the operator to indicate a measurement point on an arc where a line should be written is performed. Therefore, the measurement point instruction unit 13 also controls the display control unit 11 as necessary.

The dimension line position designating section 14 functions in a state where the display control section 11 displays a drawing on the screen of the display 3 and the measurement point designating section 13 designates a measurement point on an arc, For example, a process for causing an operator to instruct a position to write a dimension line on the drawing by an interactive operation with the screen of the display 3 is performed. Therefore, the dimension line position designating unit 14 also controls the display control unit 11 as necessary.

The memory 15 stores information including CAD drawing data to be displayed by the display control unit 11. The stored contents of the memory 15 are transferred to the storage device 5 as needed. The memory 15 may share the memory used in the normal CAD processing in the CAD processing unit 1.

The writing control unit 16 is arranged on the drawing data displayed on the display 3 and stored in the memory 15 so that the measurement point position on the arc obtained by the measurement point instruction unit 13 and the dimension line position instruction unit 14 are obtained. The arc length dimension line data is written according to the dimension line entry position obtained by.

Next, the operation of the CAD system having the above-mentioned structure, particularly for creating the arc length dimension, will be described in detail with reference to the flow chart shown in FIG. It is assumed that the processing shown in FIG. 2 is started as an interrupt processing by a command input during a normal drawing or editing operation in the CAD system.

First, the command input section 1 of the CAD processing section 1
When the operator selects and inputs the arc length dimension creation command via 2 (step S1), the system is set to the arc length dimension mode (step S2). In the arc length dimension mode, the measurement point instruction unit 13 of the CAD processing unit 1 gives an instruction by the operator of the measurement point on the arc where the arc length dimension on the drawing should be entered (step S3). The instruction of the measurement points on the circular arc by the measurement point instruction unit 13 is performed by the operator's input request via the screen of the display 3, and the operator accordingly performs an instruction operation or the like using the cursor on the screen. ..

When the measurement point on the circular arc is designated in step S3, the operator designates the dimension line position where the circular arc long dimension line should be written on the drawing (step S).
4). The dimension line position instructing unit 14 instructs the dimension line position by an operator's input via the screen of the display 3, and the operator accordingly performs an instruction operation using a cursor on the screen.

The writing control section 16 displays the arc length dimension line data for the measurement point designated in step S3 according to the dimension line position obtained in step S4, displayed on the screen of the display 3 and stored in the memory 15. Writing on the drawing data (step S5), the system shifts to the next processing.

Here, an example of a specific operation in this system will be described in detail. First, C as shown in FIG.
In the menu on the editing screen of the AD system, "Annotation"-
If you select "Execute" (annotation means to enter annotations other than drawing such as dimension lines), the menu as shown in Fig. 4 will be displayed. In this menu, select "Dimension"-"Element" 5) is displayed, a menu as shown in Fig. 5 is displayed, and the prompt line at the bottom of the display 3, for example, "Please specify the type of dimension line" is displayed. This requires the operator to instruct the type of dimension line to be filled.

When "arc length"-"execute" (meaning execution of arc length dimension) is selected in this menu, a menu as shown in FIG. 6 is displayed, and the arc length dimension creation mode is entered.
In this menu, "automatic recognition"-"execute" is selected. These menus are selected and changed by the operator operating the cursor movement keys or the mouse of the input device 2 while moving the cursor bar on the menu while looking at the edit screen of the display 3.

In this state, as shown in FIG. 6, a message "Please indicate the starting point on the circumference" is displayed on the prompt line, so that the operator can enter the arc length dimension on the arc. An instruction for the first measurement point is required. When you operate the mouse etc. to indicate the first point, the prompt line on the screen will display "Please indicate the next point on the circle" as shown in Fig. 7. The operator is required to instruct the second measurement point on the drawing in which the dimension line should be entered.

When the second point is designated by operating a mouse or the like, next, as shown in FIG. 8, the prompt line on the screen displays "Please indicate the position of the dimension line". This requires the operator to instruct the position of the dimension line. When the position of the dimension line is designated by the cursor or the like by operating the mouse or the like, the arc length dimension is written at the set position on the drawing as shown in FIG. in this way,
The arc length dimension line at any location on the arc can be written very easily at any location.

[0024]

As described above, according to the present invention, C
When entering the arc length dimension on the drawing data in the AD system, select the entry of the arc length dimension, and indicate the measurement point on the arc where the dimension line should be entered and the position of the dimension line on the drawing, and display it. And on the stored drawing data,
A method for creating an arc length dimension that can automatically write the data of the arc length dimension line based on the above instruction and can easily write the arc length dimension by a simple operation, and can remarkably reduce the operation load of the operator. And a device can be provided.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of a CAD system incorporating an arc length dimension creating apparatus according to an embodiment of the present invention.

FIG. 2 is a flowchart for explaining a schematic operation of the CAD system of FIG.

FIG. 3 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system of FIG.

FIG. 4 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system of FIG.

5 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system of FIG.

FIG. 6 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system of FIG.

7 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system in FIG.

8 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system in FIG.

9 is a diagram schematically showing a state of a display screen for explaining a schematic operation of the CAD system in FIG.

[Explanation of symbols]

1 ... CAD processing unit, 2 ... Input device, 3 ... Display,
4 ... Output device, 5 ... Storage device, 11 ... Display control unit, 12
... command input section, 13 ... measurement point designating section, 14 ... dimension line position designating section, 15 ... memory, 16 ... writing control section.

Claims (4)

[Claims] 1. When entering an arc length dimension on drawing data in a CAD system, a selection step for selecting the entry of the arc length dimension, and a measurement point on the arc to which the dimension line is to be entered and a dimension line on the drawing A method of creating an arc length dimension, comprising an instructing step of instructing a position and a writing step of writing data of an arc length dimension line on the displayed and stored drawing data based on the instruction by the instructing step. .. 2. The writing step is a step of drawing the auxiliary dimension line perpendicular to the chord of the arc to be measured and parallel to each other to write the data of the arc length dimension line. How to create arc length dimension of. 3. An arc length dimension creating apparatus for inputting arc length dimensions on a drawing in a CAD system, a command input means for inputting a command including a command for writing arc length dimensions, and an arc to which a dimension line is to be entered. Instructing means for instructing the position of the upper measurement point and the dimension line on the drawing, and writing means for writing the arc length dimension line data on the displayed and stored drawing data based on the instruction by the instructing means. An arc length dimension creating apparatus comprising: 4. The writing means is means for drawing the auxiliary dimension lines perpendicular to the chord of the arc to be measured and parallel to each other to write the data of the arc length dimension line. Arc length measurement device.