JP2006079561A - Numerical controller, numerical control method, control program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a numerical controller, a numerical control method, a control program and a recording medium by which it is possible to grasp which sequential process among a plurality of sequential processes is being executed even when a command including more than one sequential processes like a fixed cycle command is executed. <P>SOLUTION: In the numerical controller for gaining numerical value control of equipment operation according to a program organized by a plurality of commands, the plurality of commands organizing the program include the plurality of sequential processes and, every time the sequential process is executed, contents of a sequential process to be executed next are analyzed. As a result of analysis, information or the like to show a position of a structural apparatus of the equipment when a sequential process to be executed next is executed is outputted for display. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a numerical control device, a numerical control method, a control program, and a recording medium for controlling a machine tool such as a lathe or a machining center, and in particular, facilitates the progress of operation during operation according to a fixed cycle command. The present invention relates to a numerical control device, a numerical control method, a control program, and a recording medium that can be grasped.

  For example, a numerical control device for controlling a machine tool such as a lathe or a machining center controls the operation of the machine tool according to the NC machining program and performs machining on the workpiece. NC machining program is coordinate system by preparation function (G function, G code), auxiliary function (M function, M code), spindle function (S code), feed function (F code), tool function (T function), etc. Is a program for controlling the setting of the tool, the movement command of the tool or the workpiece, the rotation of the spindle, etc., and machining the workpiece, and the operation of the machine tool is controlled by being executed by a computer.

  In addition, there is an NC machining program called a fixed cycle instruction in which a series of predetermined work sequences are combined into one for performing boring, drilling, tapping, and combinations thereof. When the fixed cycle command is executed, a series of NC machining processes including a movement command for machining such as boring, drilling and tapping, a spindle rotation command, and the like are sequentially executed.

Conventionally, during operation of a machine tool, information for identifying an NC machining program, such as a program name and a program ID, is displayed on the screen of a display device, and a cursor is displayed at a position indicating a command being executed. The user can visually check the progress of the work according to the NC machining program by the position of the cursor displayed on the screen, and can grasp the progress of machining on the workpiece. (See Patent Document 1).
Japanese Patent Publication No. 6-85132

  However, when executing an instruction that executes a plurality of sequential processes during execution of one instruction, such as the fixed cycle instruction described above, it is possible to grasp whether the activated instruction is being executed, There is a problem that it is impossible to grasp which sequential process is being executed among a plurality of sequential processes included in the activated instruction. That is, the cursor is only displayed on the screen at the position indicating the active command, and the progress for each of the sequential processes included in the started command cannot be displayed.

  Therefore, for example, before executing the fixed cycle command, the tool position before execution of the fixed cycle command and the position of the tool after execution of the fixed cycle command can be confirmed, but the tool that moves next during execution of the fixed cycle command. The position of the tool cannot be known, and there is a possibility that a failure such as the collision of the tool with another article occurs during the movement of the tool according to the movement command for processing such as tapping.

  The present invention has been made in view of such circumstances, and even when executing an instruction including a plurality of sequential processes in one instruction, such as a fixed cycle instruction, which of the plurality of sequential processes is selected. It is an object of the present invention to provide a numerical control device, a numerical control method, a control program, and a recording medium that can grasp whether a sequential process is being executed.

  In addition, the present invention prevents the occurrence of a failure such as a tool colliding with another article, for example, by displaying information on the position of the component device when the sequential process to be executed next is executed. An object of the present invention is to provide a numerical control device, a numerical control method, a control program, and a recording medium that can be used.

  In order to achieve the above object, a numerical control device according to a first aspect of the present invention is a numerical control device that numerically controls the operation of a device in accordance with a program configured by a plurality of instructions. It includes a sequential process, and includes means for analyzing the contents of the sequential process to be executed next each time the sequential process is executed, and means for displaying and outputting the result analyzed by the means to the outside.

  Further, in the numerical control device according to the second invention, in the first invention, the result of the analysis is information indicating a position of a component device of a device when a sequential process to be executed next is executed. And

  The numerical control method according to the third aspect of the present invention is the numerical control method in which the computer numerically controls the operation of the device according to the program composed of a plurality of instructions, wherein the plurality of instructions constituting the program perform a plurality of sequential processes. In addition, each time the sequential process is executed, the computer analyzes the contents of the sequential process to be executed next, and outputs the analysis result to the outside.

  A numerical control method according to a fourth invention is characterized in that, in the third invention, the analyzed result is information indicating a position of a component device of a device when a sequential process to be executed next is executed. To do.

  The control program according to the fifth aspect of the present invention is a control program that can be executed by a numerical control device that numerically controls the operation of a device in accordance with a program configured by a plurality of instructions. Includes a plurality of sequential processes, and each time the sequential control process is executed, the numerical control device is a means for analyzing the contents of the sequential process to be executed next, and a means for displaying and outputting the result analyzed by the means to the outside It is made to function.

  The control program according to a sixth aspect of the present invention is the control program according to the fifth aspect, wherein the analyzed result is information indicating a position of a component device of a device when a sequential process to be executed next is executed. To do.

  According to a seventh aspect of the present invention, there is provided a recording medium that records a control program that can be executed by a numerical control device that numerically controls the operation of a device in accordance with a program composed of a plurality of instructions. A plurality of instructions comprising a plurality of sequential processes, each time the numerical control device executes the sequential processes, means for analyzing the contents of the sequential processes to be executed next, and the results analyzed by the means to the outside A control program that functions as a means for display output is recorded.

  According to an eighth aspect of the present invention, there is provided a recording medium according to the seventh aspect, wherein the analysis result records a control program that is information indicating a position of a component device of a device when a sequential process to be executed next is executed. It is characterized by that.

  In the first invention, the third invention, the fifth invention, or the seventh invention, each time a plurality of sequential processes included in a plurality of instructions constituting a program are executed one by one, the contents of the sequential process to be executed next are analyzed. And display the analysis result to the outside. As a result, before the execution of all the sequential processes of the instructions composed of a plurality of sequential processes is completed, the progress of each sequential process constituting the instruction can be displayed and output to the outside, for example, the movement destination of the tool Etc. every time one sequential process is executed, it is possible to prevent the occurrence of troubles such as the tool colliding with another article during the movement of the tool by the movement command for machining. Become.

  In the second invention, the fourth invention, the sixth invention, or the eighth invention, as a result of the analysis, the position of the component device of the device when the sequential process to be executed next is executed is output to the outside. As a result, before the execution of all the sequential processes of the instructions composed of a plurality of sequential processes is completed, the movement position of the equipment component device, such as a cutting tool, is confirmed each time the execution of one sequential process is completed. Therefore, it is possible to prevent the occurrence of troubles such as the collision of the tool with another article during the movement of the tool by the movement command for machining.

  According to the present invention, even when an instruction composed of a plurality of sequential processes such as a so-called fixed cycle instruction is activated, where one instruction includes a plurality of sequential processes, all the sequential processes constituting the instruction The progress of each sequential process included in the command can be displayed and output before the execution of the tool is completed. For example, the tool collides with another article during the movement of the tool by the movement command for machining. It becomes possible to prevent the occurrence of a failure.

  Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments thereof. FIG. 1 is a block diagram showing a configuration of a numerical controller according to an embodiment of the present invention. The numerical control device according to the embodiment of the present invention includes at least a CPU (central control device) 10 as a center, and a ROM 11, RAM 12, RAM 13, display device 14, keyboard 15, motor (connected to the CPU 10 via an internal bus 18. The external interface 16 and the auxiliary storage device 17 are connected to be communicable with an external device such as a drive device 21.

  The CPU 10 is connected to the above-described hardware units of the numerical control device via the internal bus 18 and controls the above-described hardware units, and also stores a processing program stored in the ROM 11, for example, NC processing of the device Run the program.

  The ROM 11 is a non-volatile recording medium, and stores a program for controlling the numerical control device. The RAM 12 is a nonvolatile recording medium such as a flash memory, and is a program used for numerical control of the device, and records an NC machining program that can be edited by an operator. The RAM 12 can record a plurality of NC machining programs and can be selected and used during operation. The NC machining program can be acquired from an external computer via communication means (not shown) or from a portable recording medium such as a DVD or CD-ROM via the auxiliary storage device 17.

  The RAM 13 is a non-volatile recording medium such as a flash memory, and stores the program number of the NC machining program used for operation, the instruction being executed at that time, and identification information for identifying the sequential process, such as the instruction number and the process number. Record.

  The display device 14 is a display device such as a liquid crystal display device (LCD) or a display device (CRT) that displays and outputs an image to the user, and displays the contents of the NC machining program being operated and the contents of the process being executed. .

  The keyboard 15 inputs information such as conditions necessary for executing the NC machining program by typing text data. The external interface 16 sends an instruction signal in accordance with the NC machining program to be executed to a drive source that moves and rotates the device. The motor 21 operates in accordance with the NC machining program and serves as a driving source for rotating and moving a tool such as a grinding device.

  The auxiliary storage device 17 uses the portable recording medium 4 such as a CD or DVD, and downloads the NC processing program, data, and the like processed by the CPU 10 to the RAM 12. It is also possible to write the data processed by the CPU 10 for backup.

  Hereinafter, the structure of the fixed cycle command in the NC machining program used in the numerical control apparatus having the above-described configuration will be described. FIG. 2 is an illustration of a sequential process included in a drill cycle G81, which is one of the fixed cycle instructions. The fixed cycle instruction includes a plurality of sequential processes as shown in FIG.

  In the example of FIG. 2, the drill cycle G81 which is a fixed cycle instruction includes (1) positioning process 1, (2) positioning process 2, (3) cutting feed process, (4) dwell process, and (5) positioning process 3. It includes five sequential processes and executes each process sequentially.

  FIG. 3 is a schematic diagram of the movement of the cutting tool in the Z-axis direction according to the drill cycle G81 of FIG. In the positioning process 1, the cutting tool (drill) 31 is moved and positioned to the drill target position in the X-axis direction “10” and the Y-axis direction “20”, and in the positioning process 2 to the movement start position “50” in the Z-axis direction. Move and position. Next, the Z-axis direction position is rapidly fed to ‘30’ by a cutting feed process, and then cutting is started at a feed speed of 3000 mm / min. In the dwell process, when the position in the Z-axis direction becomes ‘0’, the dwell is performed for 1 second, and in the positioning process 3, the fast-forward return to the end position ‘50’ in the Z-axis direction is performed.

  In the conventional numerical control device, when a fixed cycle command such as the above-described drill cycle is executed, the state of the tool (tool movement position, rotation speed, etc.) before execution of the command and after execution of the command is displayed on the display device 14. On the display screen. When focusing on the position in the Z-axis direction, the position before execution of the drill cycle is the position at the completion of execution of the instruction that was completed before execution of the drill cycle. Only the end position '50' in the axial direction is displayed.

  Therefore, the position of the cutting tool 31 in the Z-axis direction in the state in which the operation of the sequential process next to the sequential process currently being executed is completed in the middle of the drill cycle consisting of a plurality of processes cannot be grasped. Whether or not there is an interference between the position of the pedestal that moves the material to be cut and the Z point of the cutting tool 31 during cutting, controlled by another NC machining program, during the drill cycle execution I can't confirm.

  Therefore, in the numerical control device according to the present embodiment, the state of the tool (tool movement position, rotation speed, etc.) is displayed on the display screen of the display device 14 for each of a plurality of sequential processes included in the NC machining program. 4 and 5 are flowcharts showing the processing procedure of the CPU 10 of the numerical controller according to the embodiment of the present invention.

  The CPU 10 of the numerical controller confirms whether or not an activation signal is input from the keyboard 15 (step S401). When the CPU 10 receives an input of an activation signal from the keyboard 15 (step S401: YES), the CPU 10 is an NC machining program indicated by the received input (hereinafter, the NC machining program to be executed is referred to as an execution program). The first instruction is executed (step S402). The CPU 10 inquires the process number table 111 stored in the ROM 11 (step S403), and determines whether or not the instruction to be executed includes a plurality of sequential processes among the instructions included in the NC machining program (step S403). S404).

  FIG. 6 is a view showing an example of the data structure of the process number table 111 stored in the ROM 11. As shown in FIG. 6, the number of processes is sequentially stored for each instruction used in the NC machining program. Therefore, for example, it is possible to confirm that the number of processes in the drill cycle 'G81' which is one of the fixed cycle instructions is '5' sequentially.

  When the CPU 10 determines that the instruction to be executed includes a plurality of sequential processes among the instructions included in the execution program (step S404: YES), the CPU 13 stores the inquired sequential process number in the RAM 13 (step S405). The process proceeds to 5.

  The CPU 10 initializes the counter stored in the RAM 13 to “1” (step S501), and analyzes the contents of the sequential process corresponding to the counter value (step S502). Here, the contents of the first sequential process of the instruction to be executed are analyzed.

  Based on the analysis result of the contents of the sequential process corresponding to the counter value, the CPU 10 displays the state of the tool after execution of the sequential process, for example, the position of the tool, the number of rotations, and the like on the display device 14 (step S503). ).

  The CPU 10 executes a sequential process corresponding to the counter value stored in the counter (step S504). For example, since the counter value immediately after the counter is initialized is “1”, the CPU 10 executes the first sequential process of the instruction being executed. Hereinafter, when the counter value is 'n' (n is a natural number), the CPU 10 executes the nth sequential process of the instruction being executed.

  The CPU 10 increments the counter value by “1” (step S505), and analyzes the contents of the sequential process corresponding to the counter value (step S506). For example, the contents of the second sequential process are analyzed during the execution of the first sequential process of the instruction being executed. Hereinafter, during the execution of the nth sequential process of the instruction being executed, the contents of the (n + 1) th sequential process are analyzed.

  Based on the analysis result of the contents of the sequential process corresponding to the counter value, the CPU 10 displays the state of the tool after execution of the sequential process, for example, the position of the tool, the number of rotations, and the like on the display device 14 (step S507). ). Therefore, during the execution of the predetermined sequential process, the state of the tool when the execution of the next sequential process scheduled to be executed is completed can be confirmed on the display screen 14.

  The CPU 10 determines whether or not the sequential process being executed is completed (step S508). If the CPU 10 determines that the sequential process being executed is complete (step S508: YES), the counter value of the counter is stored. It is then determined whether or not the number of sequential processes included in the executed instruction has been exceeded (step S509).

  When the CPU 10 determines that the counter value of the counter exceeds the number of sequential processes included in the stored instruction to be executed (step S509: YES), all the sequential processes are executed. The process proceeds to step S406. When the CPU 10 determines that the counter value of the counter does not exceed the number of sequential processes included in the stored instruction being executed (step S509: NO), the process returns to step S504 and the above-described processing is repeatedly executed. To do.

  When the CPU 10 determines that the instruction to be executed among the instructions included in the execution program does not include a plurality of sequential processes (step S404: NO), the CPU 10 executes the instruction as in the conventional case, and the executed instruction is executed. It is determined whether or not it is the last instruction included in the program (step S406).

  When the CPU 10 determines that the executed instruction is not the last instruction included in the execution program (step S406: NO), the CPU 10 executes the next instruction (step S407), and repeatedly executes the processes after step S403. . When the CPU 10 determines that the executed instruction is the last instruction included in the execution program (step S406: YES), execution of the execution program is completed.

  FIG. 7 is a view showing an example of screen display on the display device 14 of the numerical controller according to the embodiment of the present invention. The numerical control device according to the embodiment of the present invention has an area for displaying, for example, a “next movement position” that is not conventionally displayed for the tool “01 DRRILL”. The “next movement position” indicates information related to coordinates at which the tool is moved when execution of the next sequential process following the sequential process is completed during execution of the predetermined sequential process.

  FIG. 8 is a diagram showing the transition of the display of the “next movement position” area of the numerical control apparatus according to the embodiment of the present invention. FIG. 8 shows the transition of the display of the “next movement position” area corresponding to the drill cycle illustrated in FIG.

  As shown in FIG. 8, when the drill cycle is selected as an instruction to be executed, the X coordinate and Y coordinate of the tool when the first sequential process is completed, that is, when moved by the positioning process 1 are displayed. Next, the contents of the positioning process 2 are analyzed during the execution of the positioning process 1, and the Z coordinate of the tool when moved by the positioning process 2 is displayed.

  Hereinafter, the contents of the cutting feed process are analyzed during the execution of the positioning process 2, and the Z coordinate of the tool when moved by the cutting feed process is analyzed, while the contents of the dwell process are analyzed during the execution of the cutting feed process. When the dwell process is executed, the information indicating that the tool does not move by the dwell process is analyzed. The contents of the positioning process 3 are analyzed, and the Z coordinate of the tool when the tool is moved by the positioning process 3 is displayed.

  As a result, for each sequential process included in the command to be executed, the state of the tool at the completion of the execution of the next sequential process can be confirmed. For example, in the case of a drill process, the base on which the cutting material is placed and Whether or not interference with the tool to be cut occurs can be sequentially confirmed, and it is possible to prevent damage to the tool due to interference.

  Although the case where the moving position of the tool is displayed has been described above, the information indicating the state of the tool is not limited to this. For example, the M code for identifying the rotation speed, feed speed, and operation of the tool spindle Etc. may be displayed.

  In addition, an instruction to be executed may be displayed on the screen of the display device 14, and a sequential process to be executed next may be displayed in reverse every time the sequential process is executed. FIG. 9 is a view showing an example of the screen display when the reverse display is used in the display device of the numerical control device according to the embodiment of the present invention.

  The example of FIG. 9 is an example of a screen display when an execution program whose program number for identifying an execution program is “0001” is selected. In FIG. 9, the horizontal arrow indicates the currently executed instruction, and the downward arrow indicates the analyzed instruction.

  The instruction “G81” being executed has a plurality of sequential processes shown in FIG. Therefore, after the analysis of the sequential process shown in (1) of FIG. 2, the display is reversed as shown in FIG. 9 (1), and after the analysis of the sequential process shown in (2) of FIG. Is displayed in reverse. Hereinafter, after the analysis of the conforming process shown in FIG. 2 (3), the display is reversed as shown in FIG. 9 (3), and after the sequential process shown in FIG. 2 (4), the analysis of FIG. 9 (4) is performed. After the analysis of the sequential process shown in FIG. 2 (5), the display is highlighted as shown in FIG. 9 (5).

  In this way, among the sequential processes included in the displayed instruction to be executed, the corresponding part of the sequential process to be executed next to the sequential process being executed is highlighted so that the tool movement position by the next sequential process to be executed is displayed. And the like can be easily grasped in advance, and it is possible to prevent tool interference and the like.

  In this embodiment, an example in which a corresponding part of a sequential process included in an instruction to be executed is displayed in reverse video is described. However, the present invention is not limited to reverse display, and other display methods such as flashing display, In addition, highlighting with brightness, color, etc. changed may be used.

  The present invention is not limited to the above-described embodiments, and can be implemented in various forms without departing from the gist of the present invention.

It is a block diagram which shows the structure of the numerical control apparatus which concerns on embodiment of this invention. It is an illustration figure of the sequential process which the drill cycle G81 which is one of the fixed cycle instructions includes. It is a schematic diagram of the movement of the cutting tool in the Z-axis direction by the drill cycle G81. It is a flowchart which shows the process sequence of CPU of the numerical control apparatus which concerns on embodiment of this invention. It is a flowchart which shows the process sequence of CPU of the numerical control apparatus which concerns on embodiment of this invention. It is an illustration figure of the data structure of the process number table memorize | stored in ROM. It is an illustration figure of the screen display with the display apparatus of the numerical control apparatus which concerns on embodiment of this invention. It is a figure which shows the transition of a display of the "next movement position" area | region of the numerical control apparatus which concerns on embodiment of this invention. It is an illustration figure of the screen display in the case of using the reverse display in the display apparatus of the numerical control apparatus which concerns on embodiment of this invention.

Explanation of symbols

4 Portable recording medium 10 CPU
11 ROM
12, 13 RAM
14 Display device 15 Keyboard 16 External interface 17 Auxiliary storage device 21 Motor 31 Cutting tool

Claims (8)

In a numerical control device that numerically controls the operation of a device according to a program composed of a plurality of instructions,
The plurality of instructions constituting the program includes a plurality of sequential processes,
Means for analyzing the contents of the sequential process to be executed next each time the sequential process is executed;
And a means for displaying and outputting the result of analysis by the means to the outside.   The numerical control apparatus according to claim 1, wherein the analysis result is information indicating a position of a component device of a device when a sequential process to be executed next is executed. In a numerical control method in which a computer numerically controls the operation of a device according to a program composed of a plurality of instructions,
The plurality of instructions constituting the program includes a plurality of sequential processes,
The computer
Each time a sequential process is executed, the contents of the sequential process to be executed next are analyzed.
A numerical control method characterized in that the analysis result is displayed and output to the outside.   4. The numerical control method according to claim 3, wherein the analyzed result is information indicating a position of a component device of a device when a sequential process to be executed next is executed. In a control program that can be executed by a numerical control device that numerically controls the operation of a device according to a program composed of a plurality of instructions,
The plurality of instructions constituting the program includes a plurality of sequential processes,
The numerical control device,
A control program which functions as means for analyzing the contents of a sequential process to be executed next each time a sequential process is executed, and means for displaying and outputting the result analyzed by the means to the outside.   6. The control program according to claim 5, wherein the result of the analysis is information indicating a position of a component device of a device when a sequential process to be executed next is executed. In a recording medium that records a control program that can be executed by a numerical control device that numerically controls the operation of a device according to a program configured by a plurality of instructions.
The plurality of instructions constituting the program includes a plurality of sequential processes,
The numerical control device,
A recording medium having recorded therein a means for analyzing the contents of a sequential process to be executed next each time a sequential process is executed, and a control program for functioning as a means for displaying and outputting the result analyzed by the means to the outside . 8. The recording medium according to claim 7, wherein the analysis result records a control program that is information indicating a position of a component device of a device when a sequential process to be executed next is executed.

Images