JPH0546232A - Displaying system for intersection - Google Patents

Abstract

PURPOSE:To facilitate the selection of an intersection in the selection of the intersection at the time of inputting a shape by an interactive numeric value controller. CONSTITUTION:When plural intersections P4 and P5 exist from two auxiliary graphics, that is, an auxiliary straight line L2 and an auxiliary circle C1, scaling in which the auxiliary straight line L2, the auxiliary circle C1 and the intersections P4 and P5 are simultaneously displayed on the displaying screen is performed. The intersections P4 and P5 become candidate points. In accordance with the scaling, all graphics determined so far are re-displayed by actual lines, the auxiliary graphic is displayed by the broken lines and the candidate point is displayed by a cursor block. Subsequently, the candidate point is selected. Then, the displaying is performed so as to judge visually the position relation between two auxiliary graphics and these plural intersections, the selection of the intersections is easily performed, the program time is shortened, and the correct program can be generated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of displaying an intersection at the time of inputting a shape in an interactive numerical control device, and more particularly to a method of displaying an intersection for displaying a plurality of intersections together with an auxiliary figure on a display screen.

[0002]

2. Description of the Related Art Conventionally, in an interactive numerical control device, a graphic input is made by a shape element key. Then, the numerical values related to the required shape elements are also input, and the shape of the figure is determined.

By the way, at the time of inputting a figure, it is necessary to find an intersection whose coordinate value is unknown. These intersections are generally obtained as the intersections of circles and circles and the intersections of circles and straight lines. Except for the case where these figures touch, there are two intersections. At this time, the programmer needs to select one of the intersections.

[0004]

However, these circles and circles, circles and straight lines, or their intersections are not displayed on the display screen. Therefore, the programmer had to make a conceptual decision. That is, the programmer had to think in his head or actually draw a figure on the desk to decide which intersection to select. Therefore, it is difficult for a programmer with little or no experience to make a proper judgment.

For this reason, there is a problem in that a programmer is forced to make a selection decision of an intersection at the time of creating a program, which imposes a burden on the programmer. Further, there is a possibility that an incorrect point may be selected in order to make a conceptual decision, and it takes time to create a program.

The present invention has been made in view of the above circumstances, and an object thereof is to provide an intersection display system in which the selection of the intersection can be easily performed.

[0007]

According to the present invention, in order to solve the above-mentioned problems, in the display method of the intersection points, the display is performed for the selection of the intersection points when the shape is input in the interactive numerical control device. When there are a plurality of intersections of the auxiliary figure, scaling is performed so that the plurality of intersections can be displayed on the display screen, and the plurality of intersections are displayed on the display screen together with the auxiliary figure. A display method is provided.

[0008]

Operation: When there are a plurality of intersections of two auxiliary figures,
The plurality of intersections are simultaneously displayed on the display screen. But,
In some cases, merely displaying the auxiliary figure and the intersection may not display the intersection on the actual shape display screen, or the auxiliary figure may not be clearly displayed. In such cases, 2
The auxiliary figure and the plurality of intersections are scaled so that they are simultaneously displayed on the display screen and then displayed.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 2 is a block diagram showing the configuration of an interactive numerical control device for implementing the intersection display system of the present invention.

The processor 11 controls the entire numerical controller according to the system program stored in the ROM 12. The ROM 12 is EPROM or EEPROM
Is used. An SRAM or the like is used as the RAM 13, and various data or input / output signals are stored therein. A battery-backed CMOS is used for the non-volatile memory 14 and stores parameters, pitch error correction amount, tool correction amount, and the like that should be retained even after the power is turned off.

The graphic control circuit 15 converts the digital signal into a signal for display and gives it to the display device 16. A CRT or a liquid crystal display device is used as the display device 16. The display device 16 displays the shape, processing conditions, etc. when creating a processing program in an interactive manner.

The keyboard 17 is composed of symbolic keys, numerical keys, etc., and necessary graphic data and NC data are input using these keys. The axis control circuit 18 receives an axis movement command from the processor 11 and outputs the axis command to the servo amplifier 19. The servo amplifier 19 receives the movement command and drives the servo motor of the machine tool 20. These components are coupled to each other by a bus 21.

A PMC (Programmable Machine Controller) 22 receives a T function signal (tool selection command) or the like via the bus 21 when executing an NC program. Then, this signal is processed by a sequence program, a signal is output as an operation command, and the machine tool 20 is controlled.
Further, it receives a status signal from the machine tool 20, performs a sequence process, and transfers a necessary input signal to the processor 11 via the bus 21.

Further, on the bus 21, software keys 23, N whose functions change according to a system program or the like.
A serial interface 24 for sending C data to an external device such as an FD (floppy disk), a printer or a PTR (paper tape reader) is connected. The software key 23 is used for the display device 16 and the keyboard 1.
7 and CRT / MDI panel 25.

To the bus 21, in addition to the processor 11 which is the CPU for NC, a processor 31 for interaction having a bus 30 is connected. ROM 32 on the bus 30,
The RAM 33 and the non-volatile memory 34 are connected.

The interactive data input screen displayed on the display device 16 is stored in the ROM 32. The interactive data input screens include a material definition screen for defining materials and a shape definition screen for defining machining shapes. Further, on the interactive data input screen, the entire motion trajectory of the tool and the like are displayed as a background animation when the NC data is created. Then, the work or data that can be set by the input screen is displayed on the display device 16.
It is displayed in a menu format. The item to be selected from the menu is selected by the software key 23 arranged at the bottom of the display screen corresponding to the menu. The meaning of the software key 23 changes for each screen. An SRAM or the like is used for the RAM 33, and graphic data input from the keyboard 17, auxiliary graphic data, intersections obtained from two auxiliary graphics, and other various data for interaction are stored.

The input data is the processor 3 for dialogue.
Processed by 1. By the processing of the processor 31, 2
Each auxiliary figure and a plurality of these intersections are displayed on the display device 16 via the graphic control circuit 15, or a work machining program is created. The created program data is sequentially background-animated on the display device 16 used interactively. The work machining program stored as an NC sentence in the non-volatile memory 34 is also executed during machining simulation of the machine tool 20, and is displayed in the foreground animation.

FIG. 3 is a diagram showing an example of the material definition screen. The material definition screen 60 is one of the screens displayed on the display device 16 of FIG. Before defining the shape of the processed shape, the material to be processed is first defined. Material data includes material and material shape. These data are transferred interactively by the programmer to the keyboard 17 of FIG.
Input from. Further, the input data can be changed as needed.

The input material shape 51 is drawn on the material definition screen 60. At the time of drawing, whatever size the material shape is, it is automatically scaled so as to fit within the display screen. Further, the scaling rate 55 changed due to scaling is simultaneously displayed on the material definition screen 60.

FIG. 4 is a diagram showing an example of the shape definition screen. The shape definition screen 50 is one of the display screens displayed on the display device 16 of FIG. In the shape definition of the machining shape,
First, the material shape 51 defined in FIG. 3 is displayed. next,
A shape component 52 and a prompt are displayed on the shape definition screen 50, prompting the programmer to enter the shape component. Next, as the shape component, when the straight line defining element 52a is input from the keyboard 17 by the programmer, a prompt for confirming the straight line element is displayed, and the programmer is prompted to input the start point and the end point. This straight line element represents a straight line parallel to the Z axis. Here the prompt is underlined like 52p and blinks on the display screen.

When the programmer inputs the start point P1 and the end point P2 of the linear element from the keyboard 17,
The linear element is confirmed. For the first time, the straight line element is the straight line L
1 is drawn on the shape definition screen 50 with a solid line. Also,
At the same time, the current enlargement / reduction rate 55 is displayed on the shape definition screen 50.

FIG. 1 is a diagram showing an example of the shape definition screen. The shape definition screen 50 is one of the display screens displayed on the display device 16 of FIG. On the shape definition screen 50, first, the material shape 51 defined in FIG. 3 and the straight line L defined in FIG.
1 is displayed. Next, the straight line defining element 52a and the prompt are displayed as the shape component 52, and the programmer is prompted to input the next shape component. That is, the straight line element has already been determined as the straight line L1, and the circle defining element 52b is about to be determined.

Then, when the circle defining element 52b is inputted from the keyboard 17 by the programmer, the confirming condition 53 for confirming the circle element is displayed, and any one of the confirming conditions 53 is inputted. Prompt to.
Here, the circle element represents a circle traveling in a counterclockwise direction on the circumference. On the shape definition screen 50, the final condition as the confirmation condition 53,
The radius and center are specified, and the other conditions are not specified.

At this time, in order to obtain the end point, the center is set to P3.
Then, an auxiliary circle C1 that passes through the end point P2 of the straight line L1 and an auxiliary straight line L2 that is parallel to the Z axis and is separated from the Z axis by 80 are created. Both of these auxiliary figures are displayed on the display screen as dashed lines. Further, since there are two intersections between the auxiliary circle C1 and the auxiliary straight line L2, these intersections P4 and P5 are displayed on the display screen as cursor blocks.

The display of the auxiliary circle C1, the auxiliary straight line L2 and the intersections P4 and P5 is performed by the following process. First, the auxiliary circle C1, the auxiliary straight line L2, and the intersections P4 and P5 are automatically scaled so as to fit within the display screen. At this time, the reference point for scaling is the origin of coordinates, that is, the origin of the processed shape. Next, after clearing the display screen, all the figures that have been displayed so far are redrawn by solid lines with the new scaling as a reference point. The auxiliary circle C1 and the auxiliary straight line L2 are drawn by broken lines, and the intersections P4 and P5 are displayed by cursor blocks.

The intersection selection process is performed as follows. On the shape definition screen 50, the end point confirmation condition 54 for confirming the end point is displayed, and the programmer is prompted to input the cursor key to be selected. In addition, prompt 54p
Blinks on the display screen to prompt the input of PE (end point). The programmer selects one of the two intersections from the keyboard 17 with the up, down, left, and right cursor keys. The end point is confirmed by the selection with this cursor key. For example, if the left cursor key is pressed on the shape definition screen 50, the end point P4 is confirmed, and if the right cursor key is pressed, the end point P5 is confirmed. Here, it is assumed that P5 is selected as the intersection.

After the intersection selection process, the auxiliary circle C1 and the auxiliary straight line L
The scaling for displaying 2 and the intersection points P4, P5 is automatically restored to the original scaling. Then, after the display screen is cleared, the two auxiliary figures and all the figures that have been displayed before the display of these intersections are redrawn with the original scaling. After that, for the circle element, the starting point is set to P2, and the arc to the confirmed end point is defined on the shape definition screen 5
It is drawn with a solid line at 0. Here, from P2 to the auxiliary circle C1
An arc CP1 to the end point P5 is drawn in a counterclockwise direction with a solid line.

In the above procedure, it is necessary to find the center P3 and the radius of the auxiliary circle C1, and the procedure is shown below. FIG. 5 is a diagram showing details of the shape definition. Confirmation condition 5 in FIG.
The meaning of each element shown in 3 is as follows. That is, “end point DX = 80” means that the end point is 80 away from the center of the auxiliary circle C1 in the plus direction of the X axis and is on the line segment parallel to the Z axis. That is, it means that the end point is on the auxiliary straight line L2. “Radius R = 50” means an auxiliary circle C2 with a radius of 50 centered on the end point P2 of the straight line L1.
“Center CDX = 0” means that the center of the auxiliary circle C1 is 0 from the point P3, that is, on the point P3. Here, the point P3 is obtained as an intersection of the auxiliary circle C2 and the Z axis.

Next, the intersection P of the auxiliary circle C1 and the auxiliary straight line L2
The process of obtaining P4 and P5 is performed as follows. First, with “radius R = 50”, an auxiliary circle C2 with a radius of 50 centered on the end point P2 of the straight line L1 is drawn. Next, the auxiliary circle C
Since there are P3 and P6 at the intersection of 2 and the Z axis, one of the intersections is selected. This selection method is the same as the selection of P4 and P5 described above. Here, it is assumed that P3 is selected as the intersection.

Then, the intersection P3 from "center CDX = 0"
The X-axis component of is moved by 0 in the positive direction of the X-axis. The point obtained by moving the X-axis component of this intersection P3 by 0 is the auxiliary circle C
The center of 1. In this case, the intersection P3 and the center of the auxiliary circle C1 are the same. Then, an auxiliary circle C1 whose radius is the distance between the end point P2 of the straight line L1 and the center P3 of the auxiliary circle C1 is drawn. Finally, from the auxiliary circle C1 and the auxiliary straight line L2, the intersection point P
4, P5 is obtained. These intersections P4 and P5 are candidate points and are the targets of the intersection selection processing.

FIG. 5 is a flow chart of the process of displaying the auxiliary figure and the intersection on the screen. The numerical value following S indicates a step number. [S1] Find the intersection of two auxiliary figures. That is, the intersection of a circle and a straight line and the intersection of a circle and a circle are obtained. The intersection point of the two obtained auxiliary figures becomes a candidate point.

[S2] It is checked whether the number of intersections obtained in step S1 is two. If there are two intersections (YE
If S), the process proceeds to step S3. If there is one intersection (NO), the process of displaying the auxiliary figure and the intersection on the screen ends. That is, when the two auxiliary figures are in contact with each other, the number of intersections is one, so the process of displaying the auxiliary figures and the intersections on the screen is ended.

[S3] After saving the current scaling, scaling is performed so that the two auxiliary figures and the candidate points can be displayed on the display screen. At this time, the reference point for scaling is the origin of coordinates, that is, the origin of the processed shape.

[S4] After the display screen is cleared in accordance with the scaling performed in step S3, figures up to the currently defined shape are displayed again. [S5] Two auxiliary figures and candidate points are displayed on the display screen according to the scaling performed in step S3. For example, as shown in FIG. 1, two auxiliary figures, that is, the auxiliary circle C1 and the auxiliary straight line L2 are broken lines, and candidate points P4 and P5 are shown.
Is displayed in the cursor block.

[S6] The programmer is requested to select candidate points. That is, the selection is confirmed by the program pressing the appropriate key among the keys indicating the left, right, up, and down on the keyboard 17 in FIG.

[S7] The scaling is restored to the scaling saved in step S3. [S8] After the display screen is cleared according to the scaling set in step S7, the figure up to the intersection determined in step S6 is displayed again.

Therefore, after scaling is performed such that the two auxiliary figures and their intersections are simultaneously displayed on the display screen, the positional relationship between the two auxiliary figures and these intersections is visually evaluated. Since it is displayed so that it can be judged and the intersection is selected, the intersection can be easily selected.

In the above description, various data such as graphic data is input from the keyboard 17, but it can also be input from the software key 23. Further, at the time of the intersection selection process, the two auxiliary figures and the plurality of intersections thereof are simultaneously displayed on the display screen, but only the plurality of intersections may be displayed. In this case, since the auxiliary figure is not displayed, it becomes difficult to select the intersection, but it becomes easy to create a program for processing the screen display.

Further, as the auxiliary figure, the intersections of circles and straight lines or circles and circles are obtained and displayed on the display screen. However, the intersections of auxiliary figures such as ellipses can also be obtained and displayed on the display screen. ..

Furthermore, the reference point for scaling is the coordinate origin, that is, the origin of the processed shape, but any point may be used as the reference point. For example, the midpoint between the two auxiliary figures or the center of gravity can be used as the reference point for scaling.

Then, the device for performing the processing for selecting the intersections by performing the scaling so that the two auxiliary figures and the plurality of intersections thereof are simultaneously displayed on the display screen is an interactive numerical control device. However, it can be processed by an automatic programming device as well.

[0042]

As described above, according to the present invention, when two auxiliary figures have a plurality of intersections, the two auxiliary figures and the plurality of intersections are simultaneously displayed on the display screen. After performing, the positional relationship between the two auxiliary figures and these multiple intersections is displayed so that they can be visually determined, and the intersections are selected. Can be shortened and an accurate program can be created.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a shape definition screen of an intersection display method of the present invention.

FIG. 2 is a block diagram showing a configuration of an interactive numerical control device.

FIG. 3 is a diagram showing an example of a material definition screen.

FIG. 4 is a diagram showing an example of a shape definition screen.

FIG. 5 is a diagram showing details of shape definition.

FIG. 6 is a flowchart of a process of displaying an auxiliary figure and an intersection on a screen.

[Explanation of symbols]

 L2 auxiliary straight line C1 auxiliary circle P4, P5 intersection (candidate point)

Claims (5)

[Claims] 1. A method of displaying an intersection, which is displayed for selecting an intersection when inputting a shape in an interactive numerical control device, and when there are a plurality of intersections of two auxiliary figures, the plurality of intersections are provided. Is displayed on the display screen, scaling is performed so that the plurality of intersections are displayed together with the auxiliary figure on the display screen. 2. In a method of displaying an intersection, which is displayed for selecting an intersection when inputting a shape in an interactive numerical control device, when there are a plurality of intersections of two auxiliary figures, the plurality of intersections are present. Is displayed on the display screen, scaling is performed so that the plurality of intersections are displayed on the display screen. 3. The auxiliary figures are two auxiliary circles or 1
3. The display method of intersections according to claim 1 or claim 2, wherein the number of auxiliary circles and the number of auxiliary straight lines are one. 4. The method of displaying an intersection point according to claim 1, wherein the scaling is returned to the original scaling after the selection of the intersection point. 5. The method of displaying an intersection point according to claim 1, wherein the scaling is performed by using an origin of a processed shape as a reference point.