JPH0659592B2 - Automatic programming creation device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention provides an automatic programming creation device equipped with a graphic display device for displaying a relative movement trajectory of a tool with respect to a workpiece, that is, a tool path as a graphic.

[Conventional technology]

To create a machining program for the numerical controller with the automatic programming generator, enter the shape to be machined and define it, and enter the tool path that indicates the path to be machined based on the defined machining shape and define it. Work, then turning on and off the coolant, changing the feed rate,
It is necessary to input and add at which point in the tool path an auxiliary function command such as tool diameter compensation is executed. In the conventional automatic programming preparation device, the tool path is displayed as a graphic, but the auxiliary function command cannot be displayed on the graphic and can only be displayed as NC data represented by alphanumeric characters. Therefore, in order to confirm at which point on the tool path the auxiliary function command is executed,
The NC data of each block of the machining program is sequentially displayed on the graphic display screen as shown in FIG. 7, and the operator has determined and confirmed where each block of NC data corresponds to the tool path. In order to judge the position on the tool path, NC data must be read from the first block and judged, which is very troublesome, and the NC command for commanding the movement of the tool is the same as the auxiliary function command. Depending on the type of machine tool, if it is stated in the block, whether the auxiliary function instruction is executed after the tool movement is completed or before the tool movement is started. Sometimes, I made a mistake in my judgment. For this reason,
There is a problem that only a skilled person can confirm at which point on the tool path the auxiliary function command is executed. In the invention described in Japanese Patent Laid-Open No. 59-71515, the NC machining program is input to the figure creating means 1 and decoded as shown in FIG. 1, and is necessary for displaying the tool locus here. A series of graphic data is created. The created graphic data are stored in the graphic data storage means 2
Are stored in the display unit 3 and the contents thereof are input to the display unit 3 to display the tool locus on the screen. Further, the NC processing program relating to the figure is stored in the program storage means 4 in correspondence with the starting point of the figure indicated by each figure data. When the cursor movement command is input, the cursor control means 5 refers to the contents of the graphic data storage means 2 to move the cursor along the displayed tool path. Program display control means 6
Detects whether or not the cursor has passed a start point stored in the program storage means 4, and when each of the start points is passed, the NC machining program stored corresponding to the start point is read from the program storage means 4 and displayed. Display on the screen of section 3.

As described above, according to the invention of Japanese Patent Laid-Open No. 59-71515, since the NC machining program is only displayed at the start point of the tool locus, the operator can determine what auxiliary function command is on the tool path. It has the drawback of not being able to determine if it is performed in position.

The invention described in Japanese Patent Laid-Open No. 19204/1985 is disclosed in
In a model having means for displaying an outline drawing of a target workpiece from C data on a plotter, means for plotting a dimension display together with R display, means for plotting coordinate point indication display, and either of the both Means and means for plotting the numerical displays so that they do not overlap each other are added, but this is merely a NC data bug detection system. Or the coordinate point indication is only plotted, and the operator cannot determine what auxiliary function command is executed at which position on the tool path. .

[Problems to be solved by the invention]

The present invention has been made to solve the above-described problems, and an operator can easily determine what auxiliary function command is executed and at which position on a tool path. An object is to provide a programming creation device.

[Means for solving problems]

Therefore, according to the present invention, in the automatic programming creation device having a graphic display screen for displaying the relative movement trajectory of the tool with respect to the workpiece by the machining program of the numerical control device as a graphic, turning on and off the coolant, When an auxiliary function command that does not directly command the movement of the tool such as changing the feed rate or correcting the tool radius is input, the auxiliary function command that is input is stored in a predetermined area of the memory. A command storage means, a calculation means for obtaining the inflection point on the graphic display screen closest to the current graphic cursor position, and a character display area in which a line segment of the movement trajectory has not been drawn near the inflection point An automatic programming creation device is provided which is characterized by including auxiliary function command display means for displaying the auxiliary function command in the character display area. It is.

Further, according to the present invention, the auxiliary function command storing means stores the input auxiliary function command, the calculating means finds a refraction point closest to the position of the graphic cursor, and the auxiliary function command display means refracts. Since the auxiliary function command is displayed in the character display area where the line segment is not drawn near the point, the auxiliary function command is displayed at the position where the line segment is not drawn near the inflection point of the tool movement trajectory. It

〔Example〕

An embodiment of the automatic programming creation device of the present invention will be specifically described with reference to the drawings.

FIG. 1 is a block diagram showing the overall configuration of the embodiment, and FIG. 2 is a perspective view showing the appearance of the embodiment.

In the common bus 2 connected to the central processing unit (CPU) 1,
Through the read-only memory storing the basic program 3, the memory storing the control data 4, the working memory temporarily storing the processing data 5, the NC data memory 6 storing the created NC data, and the interface 7. The disk memory 8 is connected. The disk memory 8 stores a large number of created NC machining programs.
Keyboard 9 with alphabet keys, numeric keys, etc.
Is connected to the common bus 2 via the interface 10,
The key information is transmitted to the central processing unit 1. Further, the interface 10 is directly connected to the interrupt line 11 and issues an interrupt signal to request an interrupt process when a key is operated. A graphic display device 13 is connected to the common bus 2 via an interface 12. The graphic display device 13 comprises a cathode ray display (CRT) 14, its control circuit 15, a graphic memory 16, a character generator 17 and a refresh memory 18. The graphic memory 16 stores all pixels of one screen of the display 14. The character generator 17 is a read-only memory that stores the character shape, and the refresh memory 18 has a storage area corresponding to the number of characters that can be displayed on one screen of the display 14, and a line that can display characters on the display 14. And character information to be displayed at addresses corresponding to columns (for example, 25 rows × 80 columns) are stored. The control circuit 15 transfers the data from the central processing unit 1 to the graphic memory 16
Also, a video signal is sent to the display memory 14 from the pixel data from the graphic memory 16 and the character generator 17 and stored in the refresh memory 18 to display graphics and characters.

Also, to output the created NC machining program,
An input / output interface 20 for directly transferring NC data to the NC device and an output interface 23 for outputting to the magnetic tape 21 or tape buncher 22 are connected to the common bus 2, respectively.

First, the operation procedure for creating a machining program will be briefly described. FIG. 3 is a layout view of the numerical keys at the right end of the keyboard 9, and FIG. 4 is an image view showing a graphic display example on the display 14.

The worker first defines a machining figure corresponding to the workpiece based on the machining drawing. In this embodiment, a wire cut electric discharge machine is assumed as a target machine tool, and the machining figure will be described as a two-dimensional figure. The figure is composed of points, line segments, and arcs. For example, the start point, end point, and center point of each line segment or arc are sequentially input from the keyboard 9 to be defined.

Next, the operator displays the defined figure on the display 14 and defines a machining path (cutter path). The machining path is defined by successively designating the target point on the figure to which the tool advances with the graphic cursor. At this time, if an auxiliary function command is input from the keyboard 9, the auxiliary function command is written in the last block of NC data corresponding to the currently defined machining path, and the auxiliary function command is displayed on the display 14. Is displayed near the tool path position where the command is executed. For example, the graphic display shown in FIG. 4 will be described below as an example.

(1) Enter the PATH command from the keyboard 9 to enter the tool path definition mode.

(2) When the add command for adding one block to the tool path is input, the graphic cursor 4 appears on the display 14.
1 is displayed. The graphic cursor 41 can be moved in the direction of the arrow by pressing the numerical key with the arrow shown in FIG. 3 at the right end of the keyboard 9. When the graphic cursor 41 is moved to the inflection point 42 of the figure which is the target point and the "5" key at the center of the numerical key is pressed, the straight line 43 is defined as the tool path and the display 1 is displayed.
On 4, the color changes and is displayed in green. The numerical value "5" key is used as a pick-up key for reading the cursor position.

(3) Next, press the key "M, O, C, R," and the above straight line 43
The code MOO (temporary stop) is added to the NC data block corresponding to, and MO is displayed near the inflection point 42 on the display 14. Here, the key CR indicates a carriage return key.

(4) Next, the add command is input again to move the graphic cursor 41 onto the inflection point 44, which is the next target point on the figure, and determine whether the center position of the arc is on the right or left side of the target point. After specifying the radius and the radius, press the number "5" key.
As a result, the arc 45 is defined as the tool path of the next block and is displayed in green on the display 14. The tool path 45 in this case corresponds to the circular interpolation G3. Here, since the auxiliary function command is not added, the next step is performed without pressing the M key or the like.

(5) The add command is input again, the graphic cursor 41 is moved to the next target point, the inflection point 46, and the numerical value “5” key is pressed. Thereby, the straight line 47 is defined as the next tool path and is displayed in green.

(6) With the above, the definition of the tool path is completed, and the period key is pressed.

(7) Next, input a gent command for generating NC data based on the defined tool path. Then, a file name (program name) is asked on the display 14, and an appropriate name is input.

(8) Next, set "OFFSET, L (G41)" to the left and right of the tool diameter offset.
orR (G42) ＝ "L, CR" or "R, CR" is input. When "R, CR" is entered, G42 is displayed near the origin 48 of the machining path.

(9) Next, set the feed rate to “Velocity = "Enter the appropriate F code.

(10) Lastly, what is the end of this program is `` M0,
M1orM2 ＝ I will ask. If you enter "2, CR", M02 (program end) will appear in the last block of the machining program.
Is added, and the final end 4 of the machining path on the display 14 is added.
In the vicinity of 6, M2 is displayed. When the above operation is completed, all NC machining programs are generated and stored in the NC data memory 5.

Then, the operator can confirm the NC stored in the NC data memory 5.
Transfer the machining program to the disk memory 8 and save it.
If necessary, transfer to NC device 19 or magnetic tape 2
Output to 1 and use.

Here, the M command is described as an example of the auxiliary function command, but the auxiliary function command displayed near the tool path is not limited to the MST command which is a narrowly defined auxiliary command, and the interpolation command (G0, G1, G2 , G3) and G and F commands are also displayed. That is, a command which is not directly related to the movement of the tool and which is not directly expressed as a tool path graphic on the display 14 is called an auxiliary function command including, for example, a dwell command (G04).

The means for displaying the auxiliary function command in the vicinity of the tool path in which the command is executed will be described according to the above-described machining program creating operation procedure.

FIG. 5 is a block diagram showing a function realizing means for realizing the above display function, and FIG. 6 is a flowchart.

In this embodiment, the function realizing means is as shown in FIG.
The storage unit 101 stores the auxiliary function command, the calculation unit 102 that obtains the inflection point near the cursor position, and the display unit 103 that displays the auxiliary function command.

The actual processing will be described with reference to the flowchart of FIG.

First, in step 201, it is checked whether or not it is the mode in which the auxiliary function command is input. If not, step 202
If the answer is YES, proceed to step 20.
Go to 3. In step 203, it is checked whether or not the auxiliary function command is input, and if it is input, the process proceeds to the next step 204.

In step 204, the input auxiliary function command is stored in a predetermined area of the working memory 5. Next, at step 205, the inflection point on the figure closest to the current graphic cursor position is calculated and obtained. As described above, when the auxiliary function command is normally input, the graphic cursor is placed on the inflection point which is the target point of the tool path. Often

Next, in step 206, a character area in which a line segment has not been drawn is searched for in the vicinity of the inflection point. This is because, in the character area consisting of rows and columns (for example, 25 rows × 80 columns) capable of displaying characters on the display 14, an area in which a line segment is not drawn near the inflection point is a graphic memory. Check 16 and ask.

Then, in step 207, the auxiliary function command is displayed in the character area, and the process ends.

〔The invention's effect〕

As described above, according to the present invention, along with the tool path graphic on the graphic display screen, the auxiliary that does not directly command the movement of the tool such as turning on and off the coolant, changing the feed rate, and correcting the tool diameter. Since the functional function command is displayed in the character display area where the line segment is not drawn near the inflection point of the tool path where the command is executed, the position where the auxiliary function command is executed can be set even by an unskilled person. It has an excellent effect that it can be clearly confirmed and grasped, and the creation of the NC machining program becomes easier.

[Brief description of drawings]

1 to 6 show an embodiment of an automatic programming creating apparatus according to the present invention. FIG. 1 is a block diagram, FIG. 2 is a perspective view, FIG. 3 is a layout diagram of numerical keys, and FIG. FIG. 5 is an image diagram showing a graphic display example, FIG. 5 is a basic configuration diagram of the function realizing means, FIG. 6 is a flowchart showing an actual process, and FIG. 7 is an image diagram showing a graphic display example in a conventional device. is there. 1 ... Central processing unit (CPU), 3-6 ... Memory, 8 ... Disk memory, 9 ... Keyboard, 13 ... Graphic display device, 14
… Display (CRT), 16… Graphic memory, 1
7 ... Character generator, 19 ... NC device.

Claims (1)

[Claims] 1. An automatic programming preparation device having a graphic display screen for displaying a relative movement locus of a tool as a graphic according to a machining program of a numerical control device, in which a coolant is turned on and off and a feed speed is changed. Auxiliary function command storage means for storing in a predetermined area of the memory the auxiliary function command input when an auxiliary function command that does not directly command the movement of the tool for changing or correcting the tool radius is input. , A calculation means for finding the inflection point on the graphic display screen closest to the current graphic cursor position, and a character display area near the inflection point where the line segment of the movement trajectory has not already been drawn An automatic programming preparation device comprising an auxiliary function command display means for displaying an auxiliary memory command in a display area.