JPS62254269A - Cad device - Google Patents

Abstract

PURPOSE:To easily input graphic data with high accuracy by displaying a pattern under production on a display device together with the measurements of each part and designating the measurements to be corrected on a display picture for correction. CONSTITUTION:When a graphic under production and its measurements are displayed on a display panel 8, an operator looks at this display and decides the propriety of the present display contents. If the correction is needed with the display contents, an input pen 10 is used on a transparent tablet 9 to draw a lateral line over the displayed measurements. Then the new measurements are written over the old measurements for correction. The contents of the change supplied from an input device 6 via an input control module 2 are fetched by a change recognizing module 5 to be recognized in terms of the character measurements. Then the changed data is given to a plotting module 3 and a measurement value display module 4. Thus the changed graphic and its measurements are displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a CAD device, and particularly to a CAD device used for creating mechanical drawings, etc., which require precise dimensional manual labor.

(Prior Art) With the spread of computers, CAD devices have been adopted in various fields. When inputting a drawing into a CAD device, methods such as inputting coordinate values using a keyboard, inputting a position using a cursor using a digital type, inputting the drawing using a reading device, etc. are generally adopted.

(Problems to be Solved by the Invention) Mechanical drawings generally require precision down to 1/10 mm or less. In order to process such highly accurate drawings with a CAD device, graphic data must be input with high accuracy. If a method of inputting coordinate values using a keyboard is adopted, highly accurate input can be performed, but there is a problem that input is extremely time-consuming. On the other hand, if a method of inputting graphic data using a digitizer or a reading device is adopted, the input work becomes easier, but highly accurate input cannot be performed.

Conventionally, therefore, a method has been adopted in which graphic data is input using a digitizer or reading device, and then coordinate values of the necessary portion are input using a keyboard to make corrections. However, even if this correction is to be performed, it is not displayed which part should be corrected, and coordinate values must be entered using the keyboard, so a great deal of effort must be spent on this correction work. There wasn't.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a CAD device that can easily input graphic data with high precision.

[Structure of the invention]

<Means for Solving the Problems> The present invention provides a CADiit with a display device for displaying figures and characters, an input device for specifying the position on the display screen of this display device, and a figure being drawn on the display device. A drawing module that displays the dimensions of the figure being drawn on the display device, a dimension value display module that displays the dimension values of the figure being drawn on the display device, and an input device that
Recognizes changes to the dimension values input by the input control module to be controlled and the input device, changes the figure data of the figure to be displayed based on this, and draws the figure data and dimension value data after the change, respectively. It is provided with a change recognition module that applies to the module and the dimension value display module, and a CPtJ that controls each module, thereby making it possible to easily input graphic data with high precision.

(Operation) The dimensional values of each part are displayed along with the figure on the display device, and the operator can designate and correct the dimensional values to be corrected on the display screen. When the dimensions are corrected, the corrected figure and the dimension values of each part are displayed. Therefore, the operator can easily modify figures input using a digitizer or the like and draw highly accurate figures.

(Example) The present invention will be described below based on an illustrated example. 1st
The figure is a block diagram showing the configuration of a CAD device according to the present invention. An input control module 2, a drawing module 3, a dimension value display module 4, and a change recognition module 5 are connected to CPtJl. The drawing module 3 and the dimension value display module 4 each have a function of displaying the figure being drawn and the dimension values of each part of this figure on the display device @7. The input control module 2 is an input device 6
It has a function of controlling and specifying a position on the display screen of the display device 7.

For example, as shown in FIG. 2, a display device RA7 includes a device 6 consisting of a flat display panel 8, a transparent tablet 9 and an input pen 1 provided overlappingly on this flat display panel B.
0. The figure being drawn and its dimension values are displayed on a flat display panel 8, and the operator can view this display screen through a transparent tablet 9. Further, the operator can input the position of a point on the display screen by pointing to a point on the transparent tablet 9 with the input pen 10. When a character 0 figure is drawn with the input pen 10, the coordinate values of each point constituting this character 2 figure are captured.

On the other hand, the change recognition module 5 recognizes change data regarding dimension values given by the input device 6, changes the figure data of the figure to be displayed based on this, and changes the figure data and dimension value data after the change. The data are applied to the drawing module 3 and the dimension value display module 4, respectively. The drawing module 3 and the dimension value display module 4 display the changed figure and dimension values on the display device 7 based on the given changed data.

FIG. 3 is a flowchart showing an example of correction work using this device. Before this correction work, the basic graphic data must already be input, but this input may be performed using input bag N6, for example, or by using a separately provided automatic graphic reading device, etc. It's okay. First, in step S1, the figure being drawn and its dimension values are displayed on the display panel 8. An example of this display screen is shown in Figure 4 (a
) not shown. In this example, one line segment is displayed, and the dimension value of this line segment is also displayed.Here, the symbol "・" indicates that the reference point of this dimension value is the right end of this line segment. This symbol indicates whether the reference point is a point or the left end point; "20." indicates that the reference point is the right end point, and '.20" indicates that the reference point is the left end point.

This line segment data is input using a digitizer, etc., and as mentioned above, the input work is easy, but
Accuracy is poor. The operator then looks at this display and makes necessary corrections.

That is, in step S2, it is determined whether the current display content is acceptable. If there are no corrections, you can finish the work as is. , I-If there is a positive value, proceed to the step for correction.

In step S3, the dimension values are corrected on the transparent tablet. For example, assume that the exact dimension value is 20.5. Then, on the transparent tablet 9, the operator uses the input pen 10 to draw a horizontal line on the dimension value pad 20.'' currently being displayed, as shown in FIG. - Correct by writing 20.5''. In other words, the dimension value is set to 20.5 and the reference point is changed to the left end. This change is input from the input device 6 via the input control module 2. The content is taken into the change recognition module 5. Here, the character "・20.5" is recognized from the coordinate values of each point that makes up the character "・20.5" written on the transparent tablet 9. Ru.

Subsequently, in step S4, the graphic data and dimension values are changed. That is, after recognizing the content of the change, the change recognition module 5 changes the figure data and dimension value data based on this, and sends the changed figure data and dimension value data to the drawing module 1-3 and the dimension value, respectively. Display module 4
give to

In step S5, the changed figure and dimension values are displayed. That is, the drawing module 3 and the dimension value display module 4 display the changed figure and dimension values. In this example, the display will be as shown in FIG. 4(C). Here, the broken line portion indicates a portion of the line segment extended by 0.5 with the left end point as the reference point, and is actually displayed not as a broken line but as a solid line, similar to the rounded portion of the line segment.

Also, above this line segment, the corrected dimension value ′”・20
．． 5” is displayed.

As described above, the operator can easily make necessary corrections and immediately check the state after correction. Note that in this application, the term "dimensional value" is not limited to length, but includes a wide range of drawing information such as angles, starting points and ending points of circular arcs, etc.

Therefore, in the above embodiment, an example was described in which the length of a line segment is changed, but the angle of two sides of a figure, the position and length of an arc, etc. can also be changed in the same way. In short, in the present application, by displaying various pieces of information related to a figure together with the figure, these pieces of information can be easily changed.

〔Effect of the invention〕

As described above, according to the present invention, a figure and its dimension value are displayed on the CAD device, and the dimension value is corrected on this display screen, so that highly accurate figure data can be input easily. Become what you can.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of a CAD device according to the present invention, FIG. 2 is a diagram showing an example of the configuration of an input device and a display device used in the CAD device according to the present invention, and FIG. 3 is a block diagram showing the configuration of a CAD device according to the present invention. FIG. 4 is a flowchart showing an example of the working procedure of the CAD device according to the above, and FIG. 4 is a diagram showing the display state during the procedure shown in FIG. 1...CPU, 2...Input control module, 3...
・Drawing module, 4...Dimension value display module, 5
...Change recognition module, 6...Input device, 7...
- Display device, 8... flat display panel, 9... transparent tablet, 10... input pen. Applicant's agent Yuken Sato 1 Figure 2

Claims (1)

[Scope of Claims] 1. A display device that displays figures and characters, an input device that specifies a position on the display screen of the display device, and a drawing module that causes the display device to display the figure being drawn.
a dimension value display module that causes the display device to display the dimension values of the figure being drawn; an input control module that controls the input device; and a dimension value display module that recognizes changes regarding the dimension values inputted by the input device, and based on the changes. a change recognition module that changes the figure data of the figure to be displayed and supplies the changed figure data and dimension value data to the drawing module and the dimension value display module, respectively;
A CAD device comprising: a CPU that controls each of the modules. 2. The CAD device according to claim 1, wherein the display device comprises a flat display panel, and the input device comprises a transparent tablet and an input pen provided overlappingly on the flat display panel. . 3. The CAD device according to claim 2, wherein the change recognition module recognizes the change contents by numbers and symbols written on the transparent tablet with an input pen.