JPS59189413A - Numerical control device provided with graphic display device - Google Patents

Abstract

PURPOSE:To obtain a device which is capable of foreknowing a tool path by drawing in advance a tool path of the following block, when a tool path of a block being in the course of execution is drawn in parallel to the actual movement of a machine. CONSTITUTION:A titled device is provided with a means for drawing in advance a tool path of the following block, when a tool path of a block being in the course of execution is drawn in parallel to the actual movement of a machine. For instance, an operating information of plural blocks is decoded from an NC working program by a block decoding means DEC and stored in an operating information storing means MEM. Subsequently, a display information required for displaying a tool path of a block being in the course of execution at present is generated by keeping pace with a command to a mechanical system based on the operating information, by a present tool path information generating means CNT1, and also a display information required for displaying a tool path to be displayed in the next time is generated by a following tool path display information generating means CNT2. Also, by a display means DPY, such display information is inputted, and the present tool path and the following tool path are displayed.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION The present invention relates to an improvement in a numerical control device equipped with a graphic display device that displays the travel path of a tool in parallel with actual machining.

Prior Art and Problems Recently, a numerical control device has been proposed that draws the programmed tool movement path on a built-in graphic display device in parallel with the actual machining. Since it is easier to visually grasp the condition, and there is less need to observe the machining condition near the workpiece, the risk of the operator approaching the workpiece and characterizing it is also reduced. However, conventional devices of this type only draw the tool path of the block being executed in parallel with the actual machine movement, so the operator has to know in advance what kind of tool path the next block will take. I couldn't know.

OBJECT OF THE INVENTION The present invention improves these conventional drawbacks.
The purpose is to make it possible to predict the tool path by drawing the tool path for the next block in advance while drawing the tool path for the block in progress in parallel with the actual machine movement. The purpose of this invention is to provide a numerical control device.

Structure of the Invention FIG. 1 is an explanatory diagram of the structure of the present invention. The operation information for a plurality of blocks obtained by decoding by the block decoding means DIIC is stored in the operation information storage means MEM, and the current tool path display information creation means CNT1 executes instructions to the mechanical system based on the operation information in parallel. The next tool path display information creation means CNT 2 creates the display information necessary to display the tool path of the block currently being executed. Display information necessary for displaying in a display manner that can be distinguished from the tool path of the block in progress is created from the operation information. The display means DPY inputs all of this display information and displays the current tool path and the next tool path on the screen.

Embodiment of the Invention FIG. 2 is a block diagram of a main part showing an example of the hardware configuration of a numerical control device equipped with a graphic display device of the invention, and FIG. 3 is an example of an operation flowchart thereof. In addition, in FIG. 3, 81 to S6 indicate steps, and step S2
The G code fields are Goo (positioning), GOl (linear interpolation), G02. A flag indicating which one is GO5 (circular interpolation) is stored, and XC and YC are GQ2.
It becomes significant only when GO5 is commanded. Also XM,
YM is the Y axis of the tool, the position of the Y axis, 0UTX, 0UTY
indicates the total amount of movement given to the Y-axis and Y-axis motor from the start of execution of the block, respectively.

A system program necessary for causing the microprocessor 10 to execute a predetermined process is stored in the ROM 12 (F), and if the NC program is provided in the form of a paper tape 16, it is transferred to a magnetic bubble memory via the tape reader 13. If the external memory 15 is provided in the form of an external memory 15, one block each is directly read by the microprocessor 10 from the external memory 15 and stored in the buffer 1 area 19a of the RAM 19.

The microprocessor 10 decodes the blocks stored in the buffer 1 area 19a, creates driving information necessary for driving, and stores this in the driving information storage area 196 of the RAM 19.
During actual operation, commands based on the operation information are sent to the Y-axis, Y-axis, and Z-axis position control circuits 20 to 22.
This is done by giving the following information and driving the Y-axis, Y-axis, and Z-axis motors 22 to 24. The above-mentioned block decoding and operation information creation are performed for the block that is actually being operated (executed) as well as for the preceding block. In addition, operation information for a plurality of blocks to be executed thereafter is stored.

In addition to the commands based on the operation information, the microcomputer 10 also provides current tool path display information necessary for displaying the tool path of the block currently being executed on the CRT display device 18 in synchronization with the actual movement of the machine. For example, information indicating where to display a dot on the screen is created using existing technology and is sent to a display device, such as a CR, via the data output device 17.
In addition to outputting it to the T display device 18, the tool path next to the currently displayed tool path is displayed on the CRT display device 18 based on the operation information from the next block stored in the operation information storage area 196 of the RAM 19. Necessary next tool path display information is output to the CRT display device 18 via the data output device 17. In this case, when the current tool path is displayed in red, for example, the next tool path is displayed in green.
Both tool paths should be visually distinguishable. When displaying by color, color designation information is included in the display information when it is sent to the data output device 17. Alternatively, the shapes of the lines can be changed, such as using the same color and displaying one tool path as a solid line and the other tool path as a broken line.

FIG. 4 is a block diagram of the main parts of an embodiment of the CRT display device 18, in which sDm 3o is a microprocessor, and 31 is a ROM that stores programs and the like necessary for the microprocessor 30 to execute predetermined operations.

32 is a RAM used for pointers and calculations, 33 is a data input device, 54 is a pulse emitting circuit, 35 is a horizontal
66 is an address switching circuit, 37 is an address decoder, 58 to 40 are data drivers, 41 is a red screen RAM, and 42 is a recording screen RAM.

43 is a RAM for the actual screen, 44 is a display control circuit, and 45 is a color graphics section.

In FIG. 4, when a predetermined amount of display information from the data output device 17 (FIG. 2) is input to the data input device 33,
When an interrupt occurs to the microprocessor 30, the microprocessor 30 executes the following processing. First, data input to the data input device 33 is once input into the RAM 52, and its contents are identified. When the color designation information indicates red, for example, the red screen RA is set according to the display information.
``1'' is written in the address of M41 indicating that the display is present, and when the color designation information indicates blue, for example, 1'' is written in the address of the previous screen RAM 43 according to the display information.

For example, when the microprocessor 30 is not interrupted by an interrupt, the address switching circuit 66 is set to CR.
This is to switch to the scan address side of the T controller 65, and this also allows the red, green, and blue screen RAM 41 to
The contents of 46 are read out to the display control circuit 44 in synchronization with the scanning address. In the display control circuit 44, the output of the red screen RAM 41 is converted into a red video signal, the output of the recording screen RAM 42 is converted into a green video signal, and the output of the previous screen RAM 43 is converted into a blue video signal. The color graphics section 45 receives the video signal and draws the tool path on the GET screen, as shown in Figure i and Fs (a).

An example of the display is shown in (b). FIG. 5(cL) shows a display example during execution of block N1 of the following movement command block #I X J Y 11+ ' N2 For example, the current tool path property 1 is displayed in red. Further, when the execution of block N1 is completed, the next tool path n3 is displayed as shown in FIG. 5(6). Note that the first tool path 1 may be started with no display at all as shown in Figure 5 (,), but it should be displayed in a different color in advance as shown in Figure 5 (c). You can also do it.

Note that the color graphic display device is not limited to the one having the above-mentioned configuration, but may be one having a configuration in which color designation information is written in the same screen RAM together with the display presence/absence data.

As described in detail, according to the present invention, the tool path of the block being executed is drawn in parallel with the actual movement of the machine, and the following is displayed in a display manner that can be distinguished from the tool path. Since the tool path of the block is drawn, it is possible to predict the tool path, and erroneous cutting can be completely prevented.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the configuration of the present invention, FIG. 2 is a block diagram of main parts showing an example of the hardware configuration of a numerical control device equipped with the graphic display device of the present invention, and FIG. 3 is an example of the software configuration of the present invention. 4 is a block diagram of a main part showing an embodiment of the CRT display device 18, and FIG. 5 is a detailed explanatory diagram of the present invention. 11 is a bus, 14 is a manual data input device, and 19 is a RAM.
, 19G is a buffer 7 area, and 19b is a driving information storage area. Patent Applicant Fun7nac Co., Ltd. Representative Patent Attorney Gogo Tamamushi One person outside the department Figure 1 19 Instructions for mechanical systems Figure 2 10

Claims (1)

[Claims] In a numerical control device equipped with a graphic display device for drawing a movement path of a tool commanded by an NC machine program, an operation information storage means stores operating information for a plurality of blocks obtained by decoding blocks of the NC machine program. and current tool path display information creation means for creating display information necessary for displaying the tool path of the block currently being executed in parallel with commands to the mechanical system based on the operation information; Next tool path display information creation means for creating display information from the operation information necessary to display a tool path to be displayed next to the tool path in a display manner that can be distinguished from the tool path of the block currently being executed; A graphic display characterized by comprising a next tool path display information creating means and a display device that displays the current tool path and the next tool path on a screen by inputting the display information created by the current tool path display information creating means. Numerical control equipment with equipment.