JPH0421207B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a numerical control machining method (hereinafter referred to as an NC machining method).

In the NC machining method, the position of the tool relative to the workpiece is commanded and controlled using the corresponding numerical information, and the workpiece is machined.According to the NC machining method, complex shapes can be easily and efficiently machined. It can be processed with precision and productivity can be further improved. In the NC machining method, machining information such as the current position of the tool, the machining trajectory of the tool, and the finished shape of the workpiece is displayed on the display.
It is necessary to check the machining program and monitor the machining status. Currently, a method using a color graphic display as the display has been proposed, and the color graphic display allows a plurality of different processing information to be displayed in different colors.

FIG. 1 shows a conventional NC machining block circuit that displays machining information using a color graphic display. In a normal simple color graphic display, one of seven colors can be displayed for each dot on the display screen: red, green, blue, and their mixtures of yellow, magenta, cyan, and white. be.

In FIG. 1, a write/erase circuit 14 is connected to a CPU 12 that processes processing information 100 from a processing machine 10.
Processing information 102 is written and erased in the seed color memories 16R, 16G, and 16B.
At this time, the write/erase circuit 14 decodes the color specified by the CPU 12. If it is red, the bit specified by the CPU in the color memory 16R is set to 1, and the other bits of 16G and 16B are set to 0. Make it. If it is yellow, the specified bits of 16R and 16G are set to 1 and 16B is set to 0. Then, color information 10 from the color memories 16R, 16G, 16B
4R, 104G, and 104B are supplied to one color graphic display 20 via parallel-to-serial conversion circuits 18R, 18G, and 18B, respectively.

In addition, the CPU 12 has a ROM 22 and a RAM 24.
is connected. Further, a synchronizing signal generating circuit 26 is connected to the write/erase circuit 14 and the color graphic display 20, and the timing of writing and erasing of the write/erase circuit 14 is determined by the synchronizing signal generating circuit 26. The timing for updating the image on the color graphic display 20 is determined.

Here, consider a case where the current position of the tool is displayed as red information, the machining trajectory of the tool is displayed as green information, and the finished shape of the workpiece is displayed as blue information as the machining information 102.

FIG. 2 shows the state of the color graphic display 20 on the screen. In the figure, a black circle is a red dot indicating the current position of the tool, nine dots indicate the current position of the tool, and a white circle is a green dot indicating the machining trajectory of the tool. Therefore, it can be understood from the state on the screen in FIG. 2 that the processing shown in FIG. 3 has been performed.

Next, based on FIGS. 1 and 2, a method of displaying the current position of the tool and the machining trajectory of the tool using the conventional NC machining method will be explained in detail.

During processing, the write/erase circuit 14 writes processing information 102 to the color memories 16R, 16G, and 16B.
At this time, the current position of the tool is written and erased in the color memory 16R, the machining trajectory of the tool is written and erased in the color memory 16G, and the current position of the tool is written and erased in the color memory 16B. The finished shape of the workpiece is written and erased. Based on the color information 104R, 104G, 104B from the color memories 16R, 16G, 16B, one of the three display types is displayed on the color graphic display 20.

As described above, conventionally, when displaying multiple colors, only one of the multiple colors can be used during actual display, and in order to display multiple colors at the same time, In addition to the color memory, other circuit configurations such as buffer memory are required, which makes the circuit configuration extremely complicated and expensive, making it difficult to add such a circuit configuration to a general-purpose NC device. It was difficult.

When trying to display multiple colors at the same time using only the color memory, one of the superimposed display dots will remain, and normally only the color that will be displayed later will remain. The color display was erased, and such superimposed display was practically impossible.

That is, as shown in FIG.
1, A2, A3, A4, A5, A6, A7, B
1, D1 is color information 1 from color memory 16G
04G makes it a green dot, dot C1,
C2, C3, C4, C5, D2, D3, D4, E
3 is color information 104R from color memory 16R
However, in dots C1 and D2 where green information and red information are superimposed, only the red color that will be displayed later remains, and the previously displayed green information is erased.

Therefore, when machining progresses and the current position of the tool moves from dot D3 to dot D4 and the image is updated, the display on the screen changes from the state shown in Fig. 2 to the state shown in Fig. 4. As shown in the figure, dot C1 and dot D2 go out. For this reason,
The disadvantage is that the machining trajectory of the tool is interrupted midway, making it difficult for the operator to recognize the display on the screen. In this way, dot C1 and dot D2
The reason why the light goes out is as follows. That is, the second
For dot C1 and dot D2 in the figure, only the red color that will be displayed later remains, and the previously displayed green information is erased, so dot C1
And dot D2 was a red dot,
Dot C1 and dot D in Fig. 4 whose image has been updated
In step 2, the previously displayed red information is erased, and the green information is also erased, so dot C1 and dot D2 go out.

As described above, the conventional NC machining method has the disadvantage that it is not possible to display multiple pieces of machining information at the same time.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide an NC machining method that can display a plurality of pieces of machining information at the same time.

In order to achieve the above object, the present invention provides a plurality of pieces of machining information that separately stores at least two pieces of machining information from among the machining information of the current position of the tool, the machining trajectory of the tool, and the finished shape of the workpiece. a color memory, a write/erase circuit that separately writes and erases processing information to the plurality of color memories, and superimposes different color information separately stored in the plurality of color memories each time an image is updated. It is characterized in that it includes a color information synthesis circuit for synthesizing, and a color graphic display for displaying the processed information based on a display signal from the color information synthesis circuit.

Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 5 shows a block circuit of an embodiment of the NC machining method according to the present invention. In FIG. 5, the same members as those in the block circuit of FIG. 1 are denoted by the same reference numerals, and explanations thereof will be omitted.

In FIG. 5, color memories 16R, 16
G, 16B, 16RG, 16RB, and 16GB are color memories that separately store a plurality of different processing information 102 as different color information, and the write/erase circuit 140 writes only the color memory of the designated color into one color memory. Alternatively, it is set to 0, and neither writing nor erasing is performed on other color memories. In the embodiment, the color memories 16R and 16G are a red color memory that stores the current position of the tool in red information, and a green color memory that stores the machining trajectory of the tool in green information, respectively.
B, 16RG, 16RB, 16GB are respectively,
This is a color memory that stores other processing information. The color memory 16R, 16G, 16B, 16
Color information 104R from RG, 16RB, 16GB,
104G, 104B, 104RG, 104RB,
104GB is supplied to the color information synthesis circuit 30,
Color information is combined every time the image is updated. and,
Display signal 106a, 1 from color information synthesis circuit 30
06b, 106c are parallel to serial conversion circuits 18a, 18
It is supplied to a color graphic display 20 via terminals b and 18c.

FIG. 6 shows the state of the color graphic display 20 on the screen. In the figure, the white circle with diagonal lines is an orange dot indicating the current position of the tool and the machining trajectory of the tool, and red information and green information are superimposed. Therefore, it can be understood from the state on the screen in FIG. 6 that the processing shown in FIG. 3 has been performed.

In the embodiment shown in FIG. 5, six color memories 16R, 16G, 16B, 16RG, 1
Since 6RB and 16GB are provided, six types of processing information can be stored. For example, the color memory 16R has a milled shape, the color memory 16G has a hole finish, and the color memory 16B has a finished shape.
Slice rough machining tool path, color memory 16
Milling tool path in RG, color memory 16, drill tool path in RB, color memory 16
It is possible to assign the current tool position to each GB.

Although the above description has been made regarding the case of milling processing, it goes without saying that the same effect can be achieved even in the case of turning processing.

Next, based on FIGS. 5, 6, and 7, a state in which two or more pieces of color information, in the embodiment, the current position of the tool and the machining trajectory of the tool, are displayed on the same screen will be described.

During machining, the write/erase circuit 140 writes and erases the machining information 102 in the color memories 16R and 16G, and at this time writes and erases the current position of the tool in the color memory 16R. The machining locus of the tool is written and erased in the color memory 16G. Then, color information 1 from color memories 16R and 16G
04R and 104G are supplied to the color information synthesis circuit 30, where the color information is synthesized, and the display signals 106a and 1
06b, 106c are parallel to serial conversion circuits 18a, 18
The current position of the tool and the machining trajectory of the tool are displayed on the color graphic display 20 via the terminals b and 18c.

That is, as shown in FIG.
1, A2, A3, A4, A5, A6, A7, B
1, D1 is color information 1 from color memory 16G
04G makes it a green dot, dot C2,
C3, C4, C5, D3, D4, and E3 become red dots based on the color information 104R from the color memory 16R. Furthermore, in the embodiment, the dots C1 and D2 become orange dots because two pieces of color information, the color information 104G from the color memory 16G and the color information 104R from the color memory 16R, are superimposed and synthesized. . Therefore,
From the state on the screen in Figure 6, the current position of the tool is at dot D3, and the machining trajectory of the tool is at dot A7→
It is understood that A1→D1→D3. Furthermore, unlike the conventional NC machining method, the previously displayed green information at dots C1 and D2 in FIG. 6 is not erased.

When the machining progresses and the current position of the tool moves from dot D3 to dot D4, the image is updated and changes from the state shown in FIG. 6 to the state shown in FIG. 7. Comparing the state in FIG. 7 with the state in FIG. 4 (displayed by the conventional NC processing method), it can be seen that dot C1 and dot D2 are green dots and do not go out. The reason why dot C1 and dot D2 do not turn off and become green dots even when the current position of the tool moves and the image is updated is as follows. In other words, unlike the conventional NC machining method, dot C1 in Figure 7
and for dot D2, before that (Figure 6)
The red information of the superimposed color information is erased, but the green information of the superimposed color information before that (FIG. 6) is not erased, so dot C1 and dot D2 become green dots.

As described above, the embodiments of the present invention have the advantage that when machining progresses, the machining trajectory of the tool is not interrupted midway, making it easier for the operator to recognize the display on the screen. .

In addition, in FIG. 5, the color memory 16G
Although the machining trajectory of the tool is assigned to the color memory 16R and the current position of the tool is assigned to the color memory 16R, it is also possible to assign other machining information.

Furthermore, if the screen becomes too busy, certain processing information can be deleted individually. For example, when milling is finished and drilling is started, it is possible to delete the tool trajectory from milling and monitor only the finished shape and the tool trajectory from drilling.

As described above, according to the present invention, a plurality of pieces of color information can be separately superimposed on a display, so that it is possible to display a plurality of pieces of processing information at the same time and to erase the pieces of processing information independently. Furthermore, according to the present invention, multiple colors can be displayed without complicating the circuit configuration.

[Brief explanation of drawings]

Figure 1 is a block circuit diagram of the conventional NC machining method, Figure 2 is an explanatory diagram showing the state on the color graphic display, Figure 3 is an explanatory diagram showing the machining trajectory of the tool, and Figure 4 is a color diagram. Explanatory diagram showing the state on the screen of the graphic display, No. 5
The figure is a block circuit diagram of an embodiment of the NC processing method according to the present invention, and FIGS. 6 and 7 are explanatory diagrams showing the state on the screen of a color graphic display. Identical members in each figure are denoted by the same reference numerals, 14, 1
40 is a write/erase circuit, 16R, 16G, 16B,
16RG, 16RB, 16GB are color memory, 2
0 is a color graphic display, 30 is a color information synthesis circuit, 100 and 102 are processing information, 10
4R, 104G, 104B, 104RG, 104
RB, 104GB is color information, 106a, 106b,
106c is a display signal.

Claims (1)

[Claims] 1. A plurality of color memories that separately store at least two pieces of machining information from the machining information of the current position of the tool, the machining trajectory of the tool, and the finished shape of the workpiece as different color information; a write/erase circuit that separately writes and erases processing information to the color memory; a color information synthesis circuit that superimposes and synthesizes different color information separately stored in the plurality of color memories each time an image is updated; A numerical control processing method including a color graphic display that displays the processing information based on a display signal from a synthesis circuit.