JPH08190413A - Numerical controller - Google Patents

Abstract

PURPOSE: To detect input data which causes alarming in case of the alarming. CONSTITUTION: A program analyzing means 4 analyzes a machining program 3 generated on the basis of various input data, converts it into an executable program, and outputs an alarm if detecting defective data that can not be executed normally. If the alarm is outputted, a defective input data detecting means 5 sequentially retrieves the reference data used when the defective data have been, and repeats the retrieval until input data 1a is detected as the reference data, to detect defective input data with which an improper value is inputted. Consequently, when the alarm is generated, an operator can immediately recognize and correct the improper input data.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical control device having an interactive programming function, and more particularly to a numerical control device which outputs an alarm when a created machining program cannot be executed normally.

[0002]

2. Description of the Related Art In the conventional interactive programming function,
It is common to execute a machining program using a machining macro program. The machining macro program is a program for converting the machining program created by the interactive programming function into an NC format program.

That is, the machining program created by the interactive programming function is a data group composed of a plurality of numerical data and arguments for the numerical data. Therefore, the machining program cannot be executed as it is. Therefore, when executing the machining program, the data processing function of the machining macro program converts each data in the machining program into a program in the NC format. Thereby, the machining program can be executed or the machining simulation can be performed.

In the data processing function of such a processing macro program, various calculations are performed based on input data. At this time, if the processing is executed based on the data obtained as a result of the calculation, the processing may not be possible or the processing content may be inappropriate. In this case, an alarm is output.
By displaying this alarm on the display device together with a simple message, the operator is notified of the occurrence of the malfunction.

[0005]

However, even if there is an error in the input data input when creating the machining program, an alarm is output after performing various calculation processes according to the machining macro program. There are many. In this case, the operator is notified of the data after various calculations are performed using the machining macro program. Therefore, it is difficult to judge which input data has an error only by looking at the alarm message.
In particular, when the calculation in the machining macro program is very complicated, a very large amount of time is spent to detect problematic input data, resulting in deterioration of work efficiency during programming.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a numerical controller capable of detecting the input data that causes the alarm when the alarm occurs.

[0007]

In order to solve the above problems, the present invention provides a numerical control device having an interactive programming function, which analyzes and executes a machining program created on the basis of various input data. Program analysis means for converting into a program and outputting an alarm when defective data that cannot be executed normally is detected, and when the alarm is output, the reference data used as a reference when the defective data is set are sequentially searched. And a defective input data detecting means for detecting defective input data in which an inappropriate value is input by repeating the search until the input data is detected as the reference data. A device is provided.

[0008]

The program analysis means analyzes a machining program created on the basis of various input data and converts it into an executable program, and outputs an alarm when it detects defective data that cannot be normally executed. When an alarm is output, the defective input data detection means sequentially searches the reference data that is the reference when the defective data is set, and repeats the search until the input data is detected as the reference data, thereby Detects bad input data for which an appropriate value has been input.

Thus, when an alarm occurs, the operator can immediately recognize and correct inappropriate input data.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of the present invention. In order to perform interactive programming, a tool file 1b and a cutting condition file 1c are prepared in the numerical controller. The data regarding each tool is stored in the tool file 1b. The cutting condition file 1c stores cutting condition data suitable for each processing content. The operator uses the keyboard or the like to input various input data 1a.
By inputting, the processing content to be executed is set.

The interactive programming means 2 reads the input data 1a and creates a machining program 3 using the necessary tool file 1b and cutting condition file 1c. The processing program 3 is a set of data in which a plurality of numerical data and arguments for the numerical data are described according to a certain law.

The program analysis means 4 analyzes the contents of the machining program 3 to convert it into a file format of an NC program that can be executed by the numerical control device and output it. The program analysis means 4 is executed at the time of execution of work machining by the machining program 3 or at the time of simulation for confirming the execution content of the machining program 3. Then, during the analysis of the machining program 3, the machining program 3
An alarm is output when the defect of is discovered. The program analysis means 4 is a function performed by the processor in the numerical control device executing the machining macro program 4a.

The defective input data detecting means 5 fetches the data that is the cause of the alarm. If this data is one of the input data 1a, that data is output. In addition, the captured data is the program analysis means 4
If is the data calculated after performing the calculation process, the data that is the basis of the calculation is searched. In this manner, the search of the data that is the basis of the calculation is sequentially performed until the input data 1a is detected, and finally, all the defective input data that has caused the alarm is detected.

The data re-input control means 6 displays the data re-input screen 7 of the defective input data on the display device so that the defective input data can be re-input. This data re-input screen 7 is a data input screen 7 corresponding to each defective input data.
a and 7b are displayed and an alarm message indicating the cause of the alarm occurrence is output. This screen allows the operator to
Recognize which input data was incorrect and correct the input data.

FIG. 2 is a block diagram showing the configuration of an interactive numerical control apparatus which is an embodiment of the present invention. The processor 11 controls the entire interactive numerical control device according to the system program stored in the ROM 12. Also, ROM
A machining macro program is also stored in the table 12. RO
EP12 or EEPROM is used for M12. An SRAM or the like is used as the RAM 13, and various data or input / output signals are stored therein. Non-volatile memory 1
A CMOS (not shown) backed up by a battery is used for 4 and stores a tool file, a cutting condition file, a machining program, parameters, a pitch error correction amount, a tool correction amount, and the like that should be retained even after the power is turned off. .

The axis control circuit 21 receives the axis movement command from the processor 11 and outputs the axis command to the servo amplifier 22. The servo amplifier 22 receives the movement command and drives the servo motor of the machine tool 50. A PMC (Programmable Machine Controller) 23 receives a T function signal (tool selection command) and the like when executing an NC program. Then, these signals are processed by the sequence program, and the signals are output as operation commands, and the machine tool 5
Control 0. Further, it receives a status signal from the machine tool 50, performs a sequence process, and transfers a necessary input signal to the processor 11.

All the above-mentioned components are connected to each other by a bus 19, which is connected to the NC.
In addition to the processor 11 which is a CPU for communication, a processor 31 for interaction is connected by a bus 29.

The processor 31 has a bus 39 and a ROM
32, a RAM 33, a non-volatile memory 34, a VRAM (video RAM) 35, and a graphic control circuit 36 are connected. The processor 31 executes the interactive processing program stored in the ROM 32, and displays work or data that can be set in a menu format on the display device 43 described later on the interactive data input screen. In addition, a machining program is created from the data thus input, and the overall motion trajectory of the tool is displayed as a background animation. In the ROM 32, an input screen for the interactive data and the like are stored in addition to the interactive processing program. An SRAM or the like is used as the RAM 33, and various data for dialogue are stored. As the non-volatile memory 34, a CMOS backed up by a battery (not shown) is used, and program data, a machining program and the like to be retained even after the power is turned off are stored.
The VRAM 35 is a RAM that can be accessed at high speed,
Graphic data for displaying an animation is stored when a cutting simulation of the machine tool 50 is performed based on the machining program stored as an NC sentence in the non-volatile memory 34. The graphic control circuit 36 is VR
The graphic data stored in the AM 35 is converted into a signal for display and output.

In addition, a CRT / MDI (Cathod Ray Tube / Manual) that takes a human interface with an operator is provided.
The Data Input) panel 40 is connected to the bus 19 and is provided with a graphic control circuit 41, a switch 42, a display device 43, a keyboard 44 and a software key 45.

The graphic control circuit 41 is the processor 1.
It converts the digital signal output from 1 etc. into a signal for display and outputs it. The switch 42 is the graphic control circuit 3
6 or the display signal output from the graphic control circuit 41 is switched and given to the display device 43. Display device 4
A CRT or a liquid crystal display device is used for 3. The keyboard 44 includes symbolic keys, numerical keys, etc.,
Input the required graphic data and NC data using these keys. The software key 45 is a command key whose function is changed by a system program or the like, and the function name or the like is displayed at a predetermined screen position of the display device 43.

Since the background animation is displayed, the program data is used by the processor 31 for interaction.
Are processed into display data, converted into display signals by the graphic control circuit 36, and displayed on the display device 43. Similarly, when creating a machining program interactively, the shape, machining conditions, etc. are displayed in the graphic control circuit 4.
The signal is converted into a signal for display at 1 and displayed on the display device 43.

Further, an input / output interface 46 is connected to the bus 19 to input / output data including NC data to / from an external device such as an FDD (floppy disk device), a printer or a PTR (paper tape reader). Control.

The case where a machining program for pocket machining is created and executed will be specifically described below as an example. First, the operator
Define tools and machining shapes. The data input screen is divided into screens for each item to be defined.

FIG. 3 is a diagram showing an input example of the tool definition screen. In the tool definition screen 60 of this example, the tool name "end mill", nominal diameter "20.0", machining step "rough machining", and depth "30." are entered.

When the above input data is input, the following input data is automatically selected. The tool number is "72", the tool length correction number is "172", the tool diameter correction number is "72",
Cutting oil is "Coolant M7", spindle speed is "173
1. , The feed rate is "773.", and the cutting width is "7."
0. ". These automatically selected data are default settings, and can be changed as necessary.

FIG. 4 is a diagram showing an input example of the machining shape definition screen. In the machining shape definition screen 61 of this example, the machining center X coordinate is “0.”, the machining center Y coordinate is “0.”, the X direction length is “185.”, and the Y direction length is “230.”. And the corner R is “10.”.

Based on the input data of the tool and the machining shape set in this way, automatic programming is performed and a machining program is created. When executing this machining program, the machining macro program is executed to analyze the data in the machining program and generate the NC format program.

FIG. 5 is a view showing a machining macro program for setting a square pocket tool. The nominal diameter of the end mill entered on the tool definition screen 60 shown in FIG.
"0" is assigned to the variable "# 7".

This machining macro program (O9400)
By executing step 71, the data input on the tool definition screen is converted into the NC program format. In this processing macro program 71, the variable "#
The value of the variable “# 7” is input for “107”. Then, jump to the machining macro program "O9410" for square pocket shape machining (M98 P941).
0). When returning from the machining macro program for square pocket shape machining, after performing the necessary processing, it ends (M
99) Yes.

FIG. 6 is a diagram showing a machining macro program for machining a square pocket shape. Note that variable # 107
Is assigned the nominal diameter of the end mill, and the variable # 18 is assigned the corner radius R of “10.0” input on the machining shape definition screen shown in FIG.

This machining macro program (O9410)
By executing 72, the machining program is analyzed and the square pocket shape machining is executed. In this processing macro program, there is an instruction to determine whether or not the given data is appropriate as pre-processing for execution. As one of the judgments as to whether or not the data is appropriate, the nominal diameter of the end mill and the size of the corner R are compared. If the nominal diameter of the end mill is larger, alarm processing is executed, otherwise normal operation is continued (IF [# 107LE # 18] GOTO
4).

In the alarm process, the alarm number "1" is given together with the message "tool diameter is larger than corner R".
75 "is displayed (# 3000 = 175 ('the tool diameter is larger than the corner R')). As for the alarm number, the contents, countermeasures, etc. are described in the manual etc.,
This can be useful when investigating the coping method when the alarm occurs. After the alarm is displayed, jump to the last instruction of the program (GOTO 999).

If there is no mistake in setting the nominal diameter of the end mill and the size of the corner R, the subsequent processing (N4 # 2 =
AB [# 107] * TA [# 111]) is executed. When all the processing is completed, the execution of the program is ended (N999 M99).

In the above example, the end mill has a nominal diameter of "2".
Since it is "0.0" and the corner radius is "10.0", alarm processing is performed. At this time, the defective input data detecting means 5 (shown in FIG. 1) detects that the data of the variables (# 107, # 18) that directly cause the alarm is
It is determined whether the input data is input from the data input screen. As a result, the data of the variable # 18 is the input data input from the machining shape definition screen, and the variable # 107
It is recognized that the data of is a value calculated by a machining macro program for machining a square pocket shape.

With respect to the variable # 107, the data serving as a reference for calculation is further detected. Then, it is determined whether the detected variable # 7 is the input data input from the data input screen, and it is recognized that the variable # 7 is the input data input from the tool definition screen.

In this way, the detected input data is recorded in the internal table provided corresponding to the alarm that has occurred. FIG. 7 is a diagram showing an internal table.
The internal table 80 has items of "processing menu name", "data input screen name", "process number", and "variable". In this example, two types of defective input data are detected. The first data is "Pocket machining" for "Machining menu name" and "Tool definition" and "Process number" for "Data input screen name". Is set to "4", and "# 7" is set to "variable". The second defect input data is "Pocket processing" for "Processing menu name",
For "Data entry screen name", "Square pocket shape",
"4" for "process number", "# 18" for "variable"
Is set.

Based on this alarm processing internal table,
The data re-entry screen is displayed on the display device. FIG. 8 is a diagram showing a data re-input screen. Data re-input screen 90
Is divided into a plurality of screens for each data input screen (each divided screen is referred to as a window hereinafter).

On this data re-input screen 90, two windows, a tool definition screen 91 and a machining shape definition screen 92, are displayed. The values set at the time of initial input are displayed in these windows. In each window, defective input data is indicated by an arrow. A message indicating the cause of the alarm and the alarm number are displayed at the bottom of the screen.

The operator updates the input data by moving the cursor on the data re-input screen to the defective input data and inputting a value such that an alarm does not occur. FIG. 9 is a flowchart showing the first half of the processing procedure for detecting defective input data. This flow chart is a flow chart when actual machining is performed while analyzing the machining program. [S1] It is determined whether or not the processing has been completed. If the processing has been completed, the processing is terminated, and if not completed, the process proceeds to step 2. [S2] It is determined whether or not an alarm has occurred, and if an alarm has occurred, the process proceeds to step 3, and if no alarm has occurred, the process proceeds to step 1. [S3] An internal table associated with the generated alarm is provided, and the processing menu name and process number are set. [S4] The variable of the conditional expression that directly causes the alarm is acquired. [S5] Among the acquired variables, one of the variables for which it has not been judged whether or not it is the input data is selected. [S6] It is determined whether the data assigned to the selected variable is input from the data input screen, and if not input from the data input screen, the process proceeds to step 7 and is input from the data input screen. If yes, go to step 8 (shown in FIG. 10) (A). [S7] By analyzing the machining macro program in the reverse direction, the variable serving as the calculation reference of the equation that sets the selected variable is acquired, and the process proceeds to step 5.

FIG. 10 is a flowchart showing the latter half of the processing procedure for detecting defective input data. [S8] The data input screen name for inputting the defective input data assigned to the variable is set in the internal table. [S9] The variable # of defective input data is set in the internal table. [S10] It is determined whether or not some of the acquired variables have not been determined as input data.
If some of the input data have not been judged, the process proceeds to step 5 (B), and if not, the process proceeds to step 11. [S11] The process number, the processing menu name, and the data input screen name are acquired from the data in the internal table, and the data re-input screen is displayed based on these. If there are multiple data entry screens to be displayed, each will be displayed in a separate window. [S12] The variable number is acquired from the data in the internal table, and the defective input data is indicated by the arrow. At this time, when there are a plurality of defective input data within the same data input screen, each input data is indicated by an arrow. [S13] An alarm message is displayed.

In this way, when an alarm occurs, it is possible to detect the input data that causes the alarm and display the re-input screen for the data.
Therefore, the operator can immediately know the input data that has caused the alarm. Moreover, since the alarm message informs the reason why the alarm is generated, the input data can be corrected immediately and the machining can be restarted. Therefore, the working efficiency is improved due to the machining program.

In the above example, the data re-input screen is divided into a plurality of windows for display, but a plurality of screens can be displayed by switching each data input screen by key input from a software key or the like. It can also be displayed.

[0043]

As described above, according to the present invention, when an alarm occurs, the processing procedure in which the data causing the alarm is set is analyzed in the reverse direction to detect erroneous input data. Therefore, even if the data calculated as a result of complicated calculation is the direct cause of the alarm,
The operator can immediately recognize and correct the bad input data. As a result, the work efficiency for creating the machining program is improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing a schematic configuration of the present invention.

FIG. 2 is a block diagram showing the configuration of an interactive numerical control device that is an embodiment of the present invention.

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

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

FIG. 5 is a diagram showing a machining macro program for setting a square pocket tool.

FIG. 6 is a diagram showing a machining macro program for machining a square pocket shape.

FIG. 7 is a diagram showing an internal table.

FIG. 8 is a diagram showing a data re-input screen.

FIG. 9 is a flowchart showing the first half of the processing procedure of defective input data detection.

FIG. 10 is a flowchart showing the latter half of the processing procedure of defective input data detection.

[Explanation of symbols]

 1a Input data 1b Tool file 1c Cutting condition file 2 Interactive programming means 3 Machining program 4 Program analysis means 4a Machining macro program 5 Bad input data detection means 6 Data re-input control means 7 Data re-input screen

Claims (3)

[Claims] 1. A numerical controller having an interactive programming function, which analyzes a machining program created on the basis of various input data and converts it into an executable program,
Program analysis means that outputs an alarm when defective data that cannot be executed normally is detected, and when the alarm is output, the reference data used as a reference when the defective data is set is sequentially searched and used as the reference data. A numerical control device comprising: defective input data detecting means for detecting defective input data in which an inappropriate value is input by repeating the search until the input data is detected. 2. When the defective input data is detected,
2. The numerical value according to claim 1, further comprising data re-input control means for displaying a data re-input screen for re-inputting the defective input data on a display device so as to change the defective input data. Control device. 3. The data re-input control means displays a data input screen at the initial input of the defective input data in the data re-input screen, and displays the defective input data with a mark. The numerical controller according to claim 2, which is characterized in that.