JP3327641B2 - Numerical control unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numerical controller for controlling a numerically controlled machine tool, and more particularly to a numerical controller which is easy to maintain.

[0002]

2. Description of the Related Art An NC program (machining program) of a numerical controller is stored in a memory in the numerical controller.
Call it when necessary to execute the NC program. That is, it is a rule that the NC program created by the user is called and executed at the time of execution.

On the other hand, in order to store system data necessary when an alarm occurs during maintenance or the like, an interrupt type NC program which is started by a specific signal may be required.

In order to fulfill the function of such an interrupt type NC program, a pseudo interrupt type program has been created using the interrupt function of a macro program.

[0005]

However, since a macro program is a pseudo interrupt type program, it takes a lot of time to create it. In particular, when modifying, it was necessary to modify the entire macro program.

[0006] Also, creating a macro program requires a high level of programming knowledge, and it has been difficult to create it easily. The present invention has been made in view of such a point, and an object of the present invention is to provide a numerical controller capable of easily creating and executing an interrupt type NC program.

[0007]

According to the present invention, in order to solve the above-mentioned problems, a numerical control apparatus for controlling a numerically controlled machine tool monitors system data defined in an interrupt condition of an interrupt type NC program. Interrupt monitoring means for outputting an interrupt processing command when the interrupt condition is satisfied; and an interrupt processing program for executing an interrupt processing program of the interrupt type NC program in accordance with the interrupt processing command Executing means , wherein the interrupt condition includes an interrupt processing program.
Execution method, wherein the interrupt processing program execution means is
Execute the interrupt processing program according to the execution method
A numerical control device characterized by having such a configuration is provided.

[0008]

The interrupt monitoring means monitors the system data defined in the interrupt condition, and outputs an interrupt processing command when the interrupt condition is satisfied. The interrupt processing program executing means executes the interrupt processing program according to the interrupt processing command.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing functions of the numerical controller according to the present invention. The system data area 1 stores system data of the numerical controller. The system data includes an alarm number indicating an alarm, a DI / DO signal, a macro variable used in a macro program, and the like.

The interrupt type NC program 4 includes an interrupt condition 4a
And an interrupt processing program 4b. The interrupt condition 4a defines a condition for executing the interrupt processing program 4b. For example, a condition for executing the interrupt processing program 4b when a specific alarm occurs is defined. The interrupt processing program is a processing program that is executed when the interrupt condition is matched, and the content of the interrupt processing program records origin return or specific system data. Details of the interrupt condition 4a and the interrupt processing program 4b will be described later.

The interrupt monitoring means 2 monitors system data defined in the interrupt condition 4a, and outputs an interrupt processing command when the condition is satisfied. The interrupt processing program executing means 3 executes the interrupt processing program 4b according to the interrupt processing command.

Next, the details of the interrupt type NC program 4 will be described. The interrupt type NC program 4 is instructed in the following format. Gint P1; Gmd M1 E1; Galm P271 OR Galm P272; Gintend; N1 # 500 = # 4314; N2 # 501 = # 4315; N3 G28 X0 Y0 Z0; N4 M30; Indicates the program number. ";" Is a block end.

"Gint Pp;" instructs the start of an interrupt condition. Here, Pp is a command for selecting whether to enable or disable the interrupt type NC program. Pp = P1
Then, this interrupt type NC program is effective and executed. If Pp = P0, this interrupt type NC program is invalid and is not executed. This is because when using an interrupt type NC program as a maintenance program, a plurality of interrupt type NC programs are prepared and necessary interrupt type NC programs are prepared.
Useful when using only programs.

"Gmd M1 E1;" is a command for defining the operation mode and the manner of operation of the interrupt processing program.
M in Mm defines the operation mode of the numerical controller. That is, 1 = MEM (memory mode), 2 = MDI (MD
I mode), 4 = JOG (JOG mode)... In the above example, the memory mode is defined. That is, this interrupt processing program is executed only in the memory mode. To specify multiple modes, command the algebraic sum of these numbers. For example, when it is desired to instruct the memory mode and the MDI mode, the instruction is M3.

The e in Ee defines how to execute the interrupt processing program. The contents are as follows. 1: The interrupt processing program is executed after the block in execution of the currently executed NC program ends.

2: The execution of the NC program being executed is interrupted, the interrupt processing program is executed, and after the execution of the interrupt processing program, the interrupted NC program is restarted. 3: The interrupt processing program is executed in parallel without interrupting the NC program being executed.

4: After all blocks of the NC program being executed are completed, an interrupt processing program is executed. “Galm P271 OR Galm P272;” is a command for defining an alarm number. P of Pp designates an alarm number. That is, P271 means that the interrupt processing program is executed when the 271st alarm occurs. Then, "Galm P271 OR Galm P
272; ”means that the interrupt processing program is executed when one of the alarm numbers 271 and 272 occurs. Note that the alarm number 271 is in the offset C mode, and when a plane selection switching command is issued (program error), the alarm number 272 is in the offset C mode.
It means an alarm when too much cutting occurs in the mode.

In addition, the following definitions can be specified. "Gio Aa Bb Ss" Here, Gio is a command for designating DI / DO (input / output signal of the numerical control device) instead of the alarm number, and when the designated DI / DO becomes a specific state. This means executing the interrupt processing program. For example, "Gio
A64 B5S0 ". "A64 B5" is D
I / DO address X64.5 means that S0
This means that the interrupt processing program is executed when I / DO is "0".

In "Gmdi (**)", M
The operation of the keys of the DI / CRT unit can be defined. The key operated is defined in (**). Further, a macro variable can be defined by “Gmval Pp Vv”. That is, it means that the interrupt processing program is executed when the macro variable p = v.

"Gintend;" means the end of the definition of the interrupt condition. That is, from "Gint P1;" to "Ginten"
up to d; "is the definition of the interrupt condition. Next, the interrupt processing program 4b will be described. "N1 # 500 = #
"4314;" is a command for assigning the variable No. 4314 to the position No. 500 and "N2 # 501 = # 4315;" to assign the variable No. 4315 to the position No. 501. The number following N is a sequence number.

In addition, "N3 G28 X0 Y0 Z
0; "is a home return command. Furthermore, "N4 M3
0; "is a program end. Such an interrupt processing program 4b can be used to record the contents of DI / DO at the time of occurrence of an alarm when an alarm occurs during maintenance of the numerical controller.

The control program of NC, the sequence of PMC (Programmable Machine Controller)
It can also be used to debug programs. Next, hardware of a numerical control device for implementing the present invention will be described. FIG. 2 is a block diagram of hardware of a numerical controller for implementing the present invention.

The processor 11 controls the entire interactive numerical controller according to a system program stored in the ROM 12. The ROM 12 has EPROM or EEPROM.
OM is used. An SRAM or the like is used as the RAM 13 to store various data or input / output signals. The non-volatile memory 14 uses a CMOS that is backed up by a battery (not shown) and stores parameters to be retained even after the power is turned off, a pitch error correction amount, a tool correction amount, and the like.

The interrupt monitoring means 2 and the interrupt processing program executing means 3 shown in FIG. In addition, the interrupt type NC program 4 is
Is stored in The system data area 1 is the RAM 1
3 and the nonvolatile memory 14.

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

The above components are all bus 19
And the bus 19 has N
A processor 31 for dialogue is connected by a bus 29 separately from the processor 11 which is a CPU for C.

The processor 31 has a bus 39 and a ROM
32, a RAM 33, a nonvolatile memory 34, a VRAM (video RAM) 35, and a graphic control circuit 36 are connected. The processor 31 executes an interactive processing program stored in the ROM 32, and displays settable operations or data in a menu format on a display device 43 described later on an interactive data input screen. In addition, a machining program is created from the data input in this way, and the overall motion trajectory of the tool is displayed as a background animation. The ROM 32 stores an input screen for the interactive data in addition to the interactive processing program. An SRAM or the like is used as the RAM 33, and various data for conversation and the like are stored. The non-volatile memory 34 uses a CMOS that is backed up by a battery (not shown), and stores program data, machining programs, and the like to be retained even after the power is turned off. The VRAM 35 is a RAM that can be accessed at high speed, and stores graphic data for animation display when performing a cutting simulation of the machine tool 50 based on the machining program stored in the nonvolatile memory 34 as an NC statement. The graphic control circuit 36 converts the graphic data stored in the VRAM 35 into a signal for display and outputs the signal.

Further, a CRT / MDI (Cathod Ray Tube / Manual) which has a human interface with an operator.
Data Input) Panel 40 is connected to bus 19, and is provided with graphic control circuit 41, switch 42, display device 43, keyboard 44, and software keys 45.

The graphic control circuit 41 includes the processor 1
The digital signal output from 1 or the like is converted into a signal for display and output. The switch 42 is a graphic control circuit 3
6 or the display signal output from the graphic control circuit 41 is switched and applied to the display device 43. Display device 4
3 is a CRT or a liquid crystal display device. The keyboard 44 is composed of symbolic keys, numeric keys, etc.
Necessary graphic data and NC data are input using these keys. The software key 45 is a command key whose function changes according to a system program or the like, and its function name or the like is displayed at a predetermined screen position on the display device 43.

The interrupt type NC program 4 is inputted using the keyboard 44 and the software keys 45. Further, the recording data after executing the interrupt processing program 4b is displayed on the display device 43.

A signal for display from the graphic control circuit 36 is processed by the interactive processor 31 on the display device 43, and a background animation is displayed by the created program data.
Similarly, a signal for display from the graphic control circuit 41 displays a shape, processing conditions, and the like when a processing program is created in an interactive manner.

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.

[0033]

As described above, according to the present invention, the interrupt monitoring means monitors the system data defined in the interrupt condition, and executes the interrupt processing program when the interrupt condition is satisfied. With this configuration, an interrupt type NC program can be easily created.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating functions of a numerical control device.

FIG. 2 is a block diagram of hardware of a numerical control device for implementing the present invention.

[Explanation of symbols]

 1 system data area 2 interrupt monitoring means 3 interrupt processing program execution means 4 interrupt type NC program 4a interrupt condition 4b interrupt processing program

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) G05B 19/18-19/46 B23Q 15/00-15/28

Claims (2)

(57) [Claims] 1. A numerical controller for controlling a numerically controlled machine tool, wherein system data defined in an interrupt condition of an interrupt type NC program is monitored, and an interrupt processing command is issued when the interrupt condition is satisfied. interrupt monitoring means for outputting, said by the interrupt processing command, have a, and interrupt processing program executing means for executing the interrupt processing program of the interrupt-type NC program interrupt to the interrupt condition Of the execution of the processing program
The interrupt processing program execution means includes a
Execute the interrupt processing program according to the method
Numerical control apparatus characterized by constituting the. 2. The interrupt condition includes an operation mode ,
The interrupt processing in the operation mode specified by the interrupt condition;
The numerical control device according to claim 1, wherein the numerical control device executes a program .