JP2009080591A - Numerical control device, control program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a numerical control device for easily confirming whether or not a modal instruction has been correctly set, and to provide a control program and a recording medium therefor. <P>SOLUTION: A first modal information table 1321 in which a modal G code required when an axial movement instruction of a machine tool is issued is set is stored in a non-volatile memory of a numerical control device. When the modal G code related with the axial movement is set in a block read by a CPU, an instruction flag "1" is set for the modal group belonging to the modal G code. When the instruction of the axial movement is issued in the next block, and the instruction flag set in the first modal information table 1321 is "0", there is a suspicion that the modal G code whose instruction flag is "0" is not set. In this case, a warning is displayed on a display. Therefore, a user can easily confirm that the modal G code is not set. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a numerical control device, a control program, and a recording medium, and more particularly to a numerical control device, a control program, and a recording medium that control a machine tool based on an NC program.

  Conventionally, a numerical control device for controlling a machine tool based on an NC program is known. When the numerical control apparatus is automatically operated, a modal G code (modal instruction) is often used as the command mode. A modal G code is a valid G code once commanded until another G code is commanded. For example, a method of setting a modal G code with a parameter at power-on or reset is known (see, for example, Patent Document 1). By this method, it is possible to operate in a modal state that matches the machine tool from the time of power-on or reset.

By the way, in such a numerical control device, it is desirable to set the machine tool to an initial state with a simple program when the machining by one setting is completed and the machining process by the next setting is started. Therefore, for example, there is known a numerical control device that can set a command state of modal data to an initial state by one control command code (see, for example, Patent Document 2).
JP-A-4-148304 JP 2007-26323 A

  However, in the numerical control device described in Patent Document 2, the effort for initializing the modal G code is improved, but it is not checked whether the modal G code is correctly initialized. Modal G code setting check methods include a visual check of the NC program displayed on the display device attached to the machine tool, a check by machine lock operation that executes the program without moving the control axis of the machine tool, etc. There is. However, there is a problem that it is difficult to completely detect a program mistake because the program entered by oneself is checked by oneself.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a numerical control device, a control program, and a recording medium that can easily confirm whether or not a modal instruction is correctly set.

  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 for controlling a machine tool based on an NC program described for each block in NC data, and blocks the NC data. A reading means for reading each time; an analyzing means for analyzing the contents of the NC data read by the reading means; a modal candidate storage means for preliminarily storing modal instruction candidates related to the operation instructions of the machine tool; A modal determination means for determining whether or not the modal instruction is set in the block analyzed by the analysis means; and when the modal determination means determines that the modal instruction is set, the modal instruction The modal setting storage means for storing that the instruction is set, and the content analyzed by the analysis means are the When the command is an operation command, the modal candidate storage unit determines whether all of the modal command candidates related to the operation command are set based on the setting stored in the modal setting storage unit. Modal setting determining means for performing notification, and notifying means for notifying when it is determined by the modal setting determining means that at least one of the candidates for the modal instruction related to the operation command is not set. .

  According to a second aspect of the present invention, in addition to the configuration of the first aspect of the invention, the modal setting determination means causes the modal instruction candidate related to the operation instruction to be all modal instruction candidates. When it is determined that the setting means has set, or when notified by the notifying means, a setting canceling means for canceling the setting by the modal setting means is provided.

  According to a third aspect of the present invention, in addition to the configuration of the first or second aspect of the invention, the notification means is configured to set the modal setting among the modal instruction candidates related to the operation instruction. The display device displays the modal command not set by the means.

  According to a fourth aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the modal candidate storage means may include the modal instruction for each of the plurality of operation instructions. The candidate is memorized.

  According to a fifth aspect of the present invention, in addition to the configuration of the first aspect of the present invention, the operation command includes at least one of axial movement, interpolation movement, circular interpolation, and fixed cycle. It is an instruction related to any of the above.

  According to a sixth aspect of the present invention, there is provided a control program for causing a numerical control device for performing numerical control of a machine tool to function. The first step reads NC data for each block, and the first step reads the NC data. The second step of analyzing the contents of the NC data, the third step of determining whether or not a modal instruction is set in the block analyzed in the second step, and the modal in the third step When it is determined that an instruction has been set, the fourth step of storing in the modal setting storage means that the modal instruction has been set, and the content analyzed in the second step is an operation instruction for the machine tool. In the modal candidate storage means for storing in advance modal instruction candidates related to the operation instruction, the modal setting storage A fifth step of determining whether all of the candidates for the modal instruction related to the operation command are set based on the setting stored in the stage, and the fifth step relates to the operation command related to the operation command. The sixth step is to notify when it is determined that one of the candidates for the modal instruction is not set.

  A recording medium according to a seventh aspect records the control program according to the sixth aspect.

  In the numerical control apparatus according to the first aspect of the present invention, the reading means reads NC data for each block. The analyzing means analyzes the operation command of the read NC data. The modal judging means judges whether or not a modal instruction is set in the block analyzed by the analyzing means. When the modal determination unit determines that a modal command is set, the modal setting storage unit stores that the modal command has been set. The modal candidate storage means stores in advance modal command candidates related to machine tool operation commands. The modal setting determining means, when the content analyzed by the analyzing means is an action command, in the modal candidate storage means, based on the setting stored in the modal setting storage means, the modal instruction related to the action command. It is determined whether all candidates are set. If it is determined that any of the modal instruction candidates related to the operation instruction is not set, the modal instruction may not be set normally. Therefore, the notification means notifies the user. Thus, the user can easily and quickly confirm whether or not the modal command is set correctly.

  In addition, in the numerical control device of the invention according to claim 2, in addition to the effect of the invention of claim 1, all of the candidates for the modal instruction related to the operation instruction are set by the modal setting means by the modal setting judging means. When it is determined that the setting has been made, or when notified by the notification means, the setting cancellation means cancels the setting by the modal setting means. That is, when a modal state different from the previous modal state is set in the next block, the setting by the setting canceling unit is canceled, so that a new modal command can be set. As a result, it is possible to accurately check whether or not the modal command related to the operation command of the NC data is set in the same or previous block.

  In addition, in the numerical control device of the invention according to claim 3, in addition to the effect of the invention of claim 1 or 2, the display device as the notification means includes a modal command candidate among modal command candidates related to the operation command. A modal command not set by the setting means is displayed. Since the displayed modal instructions may be missed, it is only necessary to confirm those modal instructions. In other words, since the modal instruction to be checked becomes clear, it can be efficiently checked in a short time.

  Further, in the numerical control device according to the fourth aspect of the invention, in addition to the effect of the invention according to any one of the first to third aspects, the modal candidate storage means stores a modal instruction candidate for each of a plurality of operation instructions. It is remembered. Therefore, modal instruction candidates related to a specific operation instruction can be set collectively.

  In addition, in the numerical control device according to the fifth aspect of the present invention, in addition to the effect of the first aspect of the present invention, at least one of the operation commands of the axis movement, the interpolation movement, the circular interpolation, and the fixed cycle You can check related modal instructions.

  In the control program of the invention according to claim 6, NC data is read for each block in the first step. In the second step, the contents of the NC data read in the first step are analyzed. In the third step, it is determined whether or not a modal instruction is set in the block analyzed in the second step. In the fourth step, when it is determined in the third step that the modal instruction is set, the setting of the modal instruction is stored in the modal setting storage means. In the fifth step, when the content analyzed in the second step is an operation command of the machine tool, the modal candidate storage unit stores in advance a modal command candidate related to the operation command. Based on the stored setting, it is determined whether all modal instruction candidates related to the operation instruction are set. In the sixth step, if it is determined in the fifth step that any of the modal instruction candidates related to the operation instruction is not set, the modal instruction may not be set normally. The user is notified. Thereby, it can be easily confirmed whether or not the modal instruction is set correctly.

  In addition, since the recording medium of the invention according to claim 7 records the control program according to claim 6, the control program according to claim 6 is executed by the numerical controller through the recording medium. Can be made. Thus, it is possible to provide a numerical control device that can easily confirm whether or not the modal instruction is correctly set.

  Hereinafter, a numerical controller 1 according to an embodiment of the present invention will be described with reference to the drawings. The numerical control device 1 numerically controls a machine tool 30 (see FIG. 1) that performs workpiece cutting. A feature of the present invention is that a modal check as to whether or not the modal G code is correctly set in the created NC program can be facilitated. The “modal G code” corresponds to the “modal instruction” of the present invention, and is a G code that is valid until another G code is commanded once commanded.

  First, the configuration of the numerical controller 1 will be described with reference to FIG. FIG. 1 is a block diagram showing an electrical configuration of the numerical controller 1. The numerical control device 1 includes a CPU 10 that is a central processing unit. The CPU 10 includes a ROM 11 that stores various programs, a RAM 12 that temporarily stores various data, a nonvolatile memory 13 that stores NC programs and the like related to workpiece machining, and an input / output interface 14 that communicates with the outside. And an output interface 15 for outputting a signal to the outside.

  The input / output interface 14 includes a keyboard 21 provided on an operation panel (not shown) of the machine tool 30, a check button 22 for switching to a modal check screen, a check start button 23 for starting a modal check, and a modal check. A release button 24 for releasing the warning and a display 25 for displaying various screens are connected to each other.

  Various output sources of the machine tool 30 are connected to the output interface 15. The drive source of the machine tool 30 drives an X-axis drive circuit 31 that drives an X-axis motor 41 that moves a table (not shown) that fixes a workpiece in the X-axis direction, and a Y-axis motor that moves in the Y-axis direction. A Y-axis drive circuit 32, a Z-axis drive circuit 33 that drives a Z-axis motor 43 that moves the spindle head (not shown) in the Z-axis direction, and a spindle (not shown) that is rotatably supported by the spindle head. And a spindle drive circuit 34 for driving the spindle motor 44 to be rotated. These drive circuits are connected to the output interface 15. In the numerical control device 1 having the above configuration, the workpiece on the table is machined into a desired shape by controlling various drive sources of the machine tool 30 based on the NC program created by the keyboard 21.

  Next, the storage area of the ROM 11 will be described with reference to FIG. FIG. 2 is a conceptual diagram of the ROM 11. The ROM 11 reads and analyzes the NC program for each block, and stores a control program storage area 111 for storing a main control program for controlling various drive sources of the machine tool 30, and a modal G code is correctly set in the NC program. A modal check program storage area 112 or the like for storing a “modal check program” for checking whether or not the check has been performed is provided. This modal check program corresponds to the “control program” of the present invention.

  Next, the storage area of the nonvolatile memory 13 will be described with reference to FIG. FIG. 3 is a conceptual diagram of the nonvolatile memory 13. The nonvolatile memory 13 includes an NC program storage area 131 for storing an NC program, four modal information tables (see FIGS. 4 to 7) in which a plurality of modal G codes are classified and set for each operation command, and an NC An information table storage area 132 for storing two operation information tables (see FIGS. 8 and 9) in which specific operation instructions for codes are set, respectively, is provided.

  Next, various tables stored in the information table storage area 132 will be described with reference to FIGS. 4 is a conceptual diagram of the first modal information table 1321, FIG. 5 is a conceptual diagram of the second modal information table 1322, and FIG. 6 is a conceptual diagram of the third modal information table 1323. FIG. 8 is a conceptual diagram of a fourth modal information table 1324, FIG. 8 is a conceptual diagram of a tool change information table 1325, and FIG. 9 is a conceptual diagram of a spindle rotation information table 1326.

  The information table storage area 132 shown in FIG. 3 includes a first modal information table 1321 (see FIG. 4), a second modal information table 1322 (see FIG. 5), and a third modal information table 1323 (see FIG. 6). A fourth modal information table 1324 (see FIG. 7), a tool change information table 1325 (see FIG. 8), a spindle rotation information table 1326 (see FIG. 9), and the like are stored.

  First, the first modal information table 1321 will be described. As shown in FIG. 4, in the first modal information table 1321, modal G codes required when an “axis movement” command is given are classified into six groups and set. These six groups correspond to the six operating conditions that are normally set during the axis movement. Specifically, a G0 modal group that collects modal G codes related to “feed”, a G40 modal group that collects modal G codes related to “tool radius correction”, and G49 that collects modal G codes related to “tool length correction”. A modal group, a G54 modal group collecting modal G codes related to “work coordinate system setting”, a G69 modal group collecting modal G codes related to “program coordinate rotation”, and an “absolute value command method or relative value command method” Each G90 modal group is a set of modal G codes related to "."

  In the G0 modal group, modal G codes of G0 (positioning: fast feed), G1 (linear interpolation: cutting feed), G2 (circular interpolation: clockwise), and G3 (circular interpolation: counterclockwise) are set, respectively. . In the G40 modal group, modal G codes of G40 (tool diameter cancellation), G41 (tool diameter correction: left in the traveling direction), and G42 (tool diameter correction: right in the traveling direction) are set. In the G49 modal group, modal G codes of G49 (tool length correction cancellation), G43 and G44 (tool length correction mode) are set.

  The G54 modal group includes G54 (work coordinate system 1), G55 (work coordinate system 2), G56 (work coordinate system 3), G57 (work coordinate system 4), G58 (work coordinate system 5), G59 (work coordinates). A modal G code of system 6) is set. In the work coordinate system setting, the current position of the NC machine tool can be preset to the value of each control axis commanded in the same block. In the G69 modal group, modal G codes of G69 (coordinate rotation mode) and G68 (coordinate rotation mode) are set. In the G90 modal group, modal G codes of G90 (absolute: absolute value command system) and G91 (incremental: relative value command system) are set.

  Further, a command flag for storing whether or not a modal G code belonging to the six modal groups is commanded in the NC program is set. “1” is set when there is a command, and “0” is set when there is no command. When an operation command related to axis movement is set in an arbitrary block of the NC program, six types of modal G codes belonging to the six modal groups set in the first modal information table 1321 are the same as the operation command. It is normal if it is written in the block or the previous block. That is, when an operation command related to axis movement is set, it is normal if the command flags of the six modal groups are all “1”.

  Next, the second modal information table 1322 will be described. As shown in FIG. 5, in the second modal information table 1322, a G64 modal group and an F command (feed speed) required when an “interpolation movement” command is issued are set. In the G64 modal group, modal G codes of G64 (cutting mode) and G61 (exact stop mode) are set. A command flag is set in the G64 modal group and the F command in order to store whether or not the command is issued in the NC program. “1” is set when there is a command, and “0” is set when there is no command. When an operation command related to interpolation movement is set in an arbitrary block of the NC program, the modal G code belonging to the G64 modal group set in the second modal information table 1322 and the F command are It is normal if it is described in the same block or the previous block. That is, when an operation command relating to interpolation movement is set, it is normal if both the G64 modal group and the F command flag are “1”.

  Next, the third modal information table 1323 will be described. As shown in FIG. 6, in the third modal information table 1323, a G17 modal group that is required when an “arc interpolation” command is set is set. In the G17 modal group, modal G codes of G17 (XY plane selection), G18 (YZ plane selection), and G19 (ZX plane selection) are set. A command flag is also set in the G17 modal group in order to store whether or not a command is issued in the NC program. “1” is set when there is a command, and “0” is set when there is no command. When an operation command related to circular interpolation is set in an arbitrary block of the NC program, the modal G code belonging to the G17 modal group set in the third modal information table 1323 is the same block as the operation command or If it is described in the block, it is normal. That is, when an operation command related to circular interpolation is set, it is normal if the command flag of the G17 modal group is “1”.

  Next, the fourth modal information table 1324 will be described. As shown in FIG. 7, in the fourth modal information table 1324, a G98 modal group required when a “fixed cycle” command is issued is set. In the G98 modal group, modal G codes of G98 (initial point level return) and G99 (R point level return) are set. A command flag is set also in the G98 modal group in order to store whether or not a command is issued in the NC program. “1” is set when there is a command, and “0” is set when there is no command. If an operation command related to circular interpolation is set in an arbitrary block of the NC program, the modal G code belonging to the G98 modal group set in the second modal information table 1322 is the same block as the operation command or If it is described in the block, it is normal. That is, when an operation command related to a fixed cycle is set, it is normal if the command flag of the G98 modal group is “1”.

  Next, the tool change information table 1325 will be described. As shown in FIG. 8, in the tool change information table 1325, a T command (tool number command) required when a “tool change command” (M6) is issued is set. In the T command, a command flag is set to store whether or not the command is issued in the NC program. “1” is set when there is a command, and “0” is set when there is no command. When an operation command related to a tool change command is set in an arbitrary block of the NC program, it is normal if the T command is written in the same block as the operation command or in the previous block. That is, when an operation command related to tool change is set, it is normal if the command flag of the T command is “1”.

  Next, the spindle rotation information table 1326 will be described. As shown in FIG. 9, in the spindle rotation information table 1326, an S command (rotational speed command) required when there is a “spindle rotation command” (M3, M4) is set. In the S command, a command flag is set to store whether or not the command is issued in the NC program. “1” is set when there is a command, and “0” is set when there is no command. When an operation command related to the spindle rotation command is set in an arbitrary block of the NC program, it is normal if the S command is described in the same block as the operation command or in the previous block. That is, when an operation command related to spindle rotation is set, it is normal if the command flag of the S command is “1”.

  Next, the check screen 251 and the warning screen 252 displayed on the display 25 will be described with reference to FIG. FIG. 10 is a conceptual diagram showing a check screen 251 and a warning screen 252 displayed on the display 25. When a check button 22 (see FIG. 1) provided on an operation panel (not shown) of the machine tool 30 is pressed, the screen of the display 25 is divided into left and right, a check screen 251 is displayed on the left side, and a warning screen 252 is displayed on the right side. Is displayed. Further, the NC program to be checked is displayed on the check screen 251 by operating the keyboard 21. Next, when the check start button 23 is pressed, a modal check of the NC program displayed on the check screen 251 is executed. In the modal check, the blocks are read in order from the lowest sequence number, and it is checked whether the modal G code is normally set.

  On the check screen 251, the currently checked block is displayed surrounded by a square frame 60. As a result, the user can easily recognize the block currently being checked. If there is a modal G code description suspicion missing during the NC program check, all the modal G code candidates suspected of being omitted are displayed on the warning screen 252 and the check is suspended. As a result, the user knows that there is a suspicion of a modal G code setting error in the block currently being checked. Further, the modal G code that is suspected of omission of description can be confirmed from the candidates displayed on the warning screen 252. Therefore, the program can be corrected promptly.

  Next, modal check control by the CPU 10 will be described with reference to the flowcharts of FIGS. 11 to 13. 11 is a flowchart of the modal check by the CPU 10, FIG. 12 is a flowchart showing the continuation of FIG. 11, and FIG. 13 is a flowchart showing the continuation of FIG. Here, a case where the NC program displayed on the check screen 251 shown in FIG. 10 is checked will be described.

  First, when a check button 22 (see FIG. 1) provided on an operation panel (not shown) of the machine tool 30 is pressed, a check screen 251 and a warning screen 252 are displayed on the display 25, respectively. On the check screen 251, the selected NC program among the NC programs stored in the NC program storage area 131 (see FIG. 3) of the nonvolatile memory 13 is read and displayed. When the check start button 23 is pressed, the modal check program stored in the modal check program storage area 112 (see FIG. 2) of the ROM 11 is called, and the modal check by the CPU 10 is started.

  First, various data are initialized (S1). Here, the command flags of the various tables (see FIGS. 4 to 9) stored in the information table storage area 132 of the nonvolatile memory 13 are all set to “0” and set to “not set”. Next, one block of sequence number N01 is read (S2). Subsequently, the contents of the read NC data are analyzed (S3). Since the NC data of the sequence number N01 is “G90G54”, the instruction is “set the modal state of the work coordinate system 1 by the absolute value command method”.

  Next, it is determined whether or not there is a modal G code in one analyzed block (S4). Two modal G codes “G90” and “G54” are set in the sequence number N01. Accordingly, since there is a modal G code in one block (S4: YES), the G90 modal group and the G54 modal group in the first modal information table 1321 are set to “command present” (S6). That is, “1” is set in each of the G54 modal group command flag and the G90 modal group command flag (see FIG. 4). Further, it is determined whether or not there is an operation command in the analyzed NC data (S7). Since “G90” and “G54” are both modal G codes and not operation commands (S7: NO), the process returns to S2.

  Next, the sequence number N02 is read (S2). The NC data of sequence number N02 is “Z100”. Subsequently, the contents of the read NC data are analyzed (S3). Further, it is determined whether or not there is a modal G code in one analyzed block (S4). Since the modal G code is not set in the sequence number N02 (S4: NO), the process proceeds to the flowchart of FIG. 12, and it is determined whether or not the sequence number N02 includes the tool change command M6 (S9). ). Since there is no M6 (S9: NO), it is then determined whether there are M3 and M4 which are spindle rotation commands (S12). Since there is no M3 or M4 (S12: NO), it is then determined whether or not it is M30 (S15). Since it is not M30 (S15: NO), it transfers to S7 of the flowchart of FIG.

  Next, it is determined whether or not there is an operation command in the analyzed NC data (S7). “Z100” is an instruction of the content “Move axis to Z100.” That is, since this is an operation command for moving the axis (S7: YES), the flow proceeds to the flowchart of FIG. 13 to determine whether or not all modal groups related to the operation command are “command present” ( S17). Here, since there was an axis movement command, six types of modal G codes respectively belonging to the six modal groups set in the first modal information table 1321 are described in the same block as the operation command or in the previous block. It must be kept.

  Therefore, if the command flags of the six modal groups are all “1” (S17: YES), six types of modal G codes are written in the same block as the operation command or in the previous block. It will be. In this case, since the modal G code related to the axis movement command is set correctly, the next block check is continued (S2).

  However, in this embodiment, as shown in FIG. 4, the command flag “1” is set only for the G90 modal group and the G54 modal group, and the command flags of the other modal groups are “ 0 ". That is, since all the modal groups related to the axis movement command are not “command present” (S17: NO), there is a suspicion of a setting error of the modal G code related to the axis movement. Therefore, a warning message is displayed on the warning screen 252 and all modal G codes belonging to the modal group whose command flag is “0” are displayed (S18). As a result, the user knows that there is a suspicion of a modal G code setting error in the block currently being checked. Furthermore, a modal G code that is suspected of omission can be confirmed from the candidates (see FIG. 10) displayed on the warning screen 252. Therefore, the program can be corrected promptly.

  Subsequently, it is determined whether the warning is released by pressing the release button 24 on the operation panel (S19). While it is not canceled (S19: NO), the process returns to S18 and the warning is continuously displayed on the warning screen 252. The user presses the release button 24 to ignore the warning and restart the check. When the release button 24 is pressed and the warning is released (S19: YES), the content displayed on the warning screen 252 is deleted (S20). Then, the process returns to S2 in the flowchart of FIG.

  Next, NC data of sequence number N03 is read (S2). The NC data of the sequence number N03 is “M6T1”. Subsequently, the contents of the read NC data are analyzed (S3). Next, it is determined whether or not there is a modal G code in one analyzed block (S4). Since there is no modal G code in the sequence number N03 (S4: NO), the process proceeds to the flowchart of FIG. 12, and it is determined whether or not the sequence number N03 has a tool change command M6 (S9). Since the code of “M6” is set in the sequence number N03 (S9: YES), it is determined whether or not there is a T command that is a tool number command in the same block (S10). Since the sequence number N03 has a T command (S10), a command flag “1” is set for the T command in the tool change information table (see FIG. 8) (S11). When there is no T command in the same block (S10: NO), the command flag of the T command in the tool change information table is not changed as it is.

  Next, the process proceeds to the flowchart of FIG. 11, and it is determined whether or not there is an operation command in the analyzed NC data (S7). Since “M6T1” is an operation command “Please change the tool of tool number 1” (S7: YES), the process proceeds to the flowchart of FIG. It is determined whether or not “Yes” is set (S17). As shown in FIG. 8, since the command flag of the T command in the tool change information table 1325 is set to “1”, the T command is described in the same block as the operation command. In this case, the T command is correctly set with respect to the M6 command. Therefore, the process returns to S2 to continue checking the next block (S2).

  Next, NC data of sequence number N04 is read (S2). The NC data of sequence number N04 is “M3”. Subsequently, the contents of the read NC data are analyzed (S3). Next, it is determined whether or not there is a modal G code in one read block (S4). Since there is no modal G code in the sequence number N04 (S4: NO), the process proceeds to the flowchart of FIG. 12, and it is further determined whether the sequence number N04 has M6 (S9). Since there is no M6 in the sequence number N04 (S9: NO), it is determined whether the sequence number N04 has M3 and M4 which are spindle rotation commands (S12). Since the code of “M3” is set in the sequence number N04 (S12: YES), it is further determined whether or not there is an S command that is a rotational speed command in the same block (S13). Since there is no S command for the sequence number N04 (S13: NO), the command flag for the S command in the spindle rotation information table 1326 is not changed as it is. If there is an S command (S13: YES), “1” is set in the command flag of the S command in the spindle rotation information table 1326 (S14).

  Next, the process proceeds to the flowchart of FIG. 11, and it is determined whether or not there is an operation command in the analyzed NC data (S7). Since “M3” is an operation command “Spin the spindle” (S7: YES), the process proceeds to the flowchart of FIG. 13 and the rotation speed command (S command) that is essential for the spindle rotation command is “There is a command. Is determined (S17). As shown in FIG. 9, since the command flag of the tool change command in the spindle rotation information table 1326 is set to “0”, the S command is not written in the same block as the operation command. In this case, since the S command is not set correctly with respect to the M3 and M4 commands, a warning message is displayed on the warning screen 252 and an S code is displayed (S18). As a result, the user knows that there is a suspicion of omission of the description of the S command in the block currently being checked, so that the program can be corrected quickly.

  Subsequently, it is determined whether the warning is released by pressing the release button 24 on the operation panel (S19). While it is not canceled (S19: NO), the process returns to S18 and a warning is displayed on the warning screen 252. The user presses the release button 24 to ignore the warning and restart the check. When the release button 24 is pressed and the warning is released (S19: YES), the warning message displayed on the warning screen 252 and the S code suspected of being omitted are deleted (S20). Then, the process returns to S2 in the flowchart of FIG.

  Thus, the above processing is repeated after sequence number N05, the last block is read (S2), and the contents are analyzed (S3). Since the last block is M30 which is an end code (S4: NO, S9: NO, S12: NO, S15: YES), since the NC program to be checked is checked to the end, the modal check is performed. finish.

  In the above description, the CPU 10 that executes the process of S2 in the flowchart of FIG. 11 corresponds to the “reading unit” of the present invention, and the CPU 10 that executes the process of S3 corresponds to the “analyzing unit” of the present invention. The CPU 10 that executes the process of S4 corresponds to the “modal determination means” of the present invention, and the CPU 10 that executes the process of S17 corresponds to the “modal setting determination means” of the present invention. Further, the information table storage area 132 of the nonvolatile memory 13 corresponds to the “modal candidate storage unit” and the “modal setting storage unit” of the present invention. 10 corresponds to the “display device” of the present invention.

  As described above, the numerical control device 1 according to the present embodiment can perform a modal check as to whether or not the modal G code is correctly set in the created NC program. The non-volatile memory 13 stores various tables in which modal G codes that are required when there are operation commands for the machine tool 30 such as “axis movement” and “interpolation movement” are classified. For example, in the first modal information table 1321 stored in the nonvolatile memory 13, modal G codes required when an “axis movement” command is given are classified into six groups and set.

  When the modal G code related to the axis movement is set in one block read by the CPU 10, the command flag “1” is set for the modal group to which the modal G code belongs. If there is a command to move the axis in the next block, if all six modal group command flags set in the first modal information table 1321 are “1”, the modal G code related to the shaft movement is correct. Is set. On the other hand, if any command flag in the six modal groups is “0”, there is a suspicion that the modal G code is not written. In this case, a warning is displayed on the warning screen 252 of the display 25. As a result, the user can see that there is a modal G code setting omission in the block currently being checked. Further, since the modal G code belonging to the modal group whose command flag is “0” is displayed on the warning screen 252, the modal G code suspected of omission is confirmed from the displayed candidates. it can. Therefore, the program can be corrected promptly.

  Needless to say, the numerical control device of the present invention is not limited to the above-described embodiment, and various modifications are possible. For example, in addition to the modal G code shown in the above embodiment, another modal G code may be checked. Further, only a specific modal G code may be checked. In the above embodiment, since the warning is displayed again if the same command is in the NC program even after the specific modal is canceled once in S19, the warning is once issued and the release operation is performed. In S20, another flag “2” indicating that the release operation has been performed once is stored in the information table storage area 132, and the warning display and the release operation are not performed in the check after the next block. good.

  As a modification of the above-described embodiment, the present invention can also be applied to R / W macro variables used when a value is written to or read from a predetermined parameter in a created NC program. . For example, when an R / W macro variable is read, it can be checked whether or not a value has already been written to the R / W macro variable.

  Therefore, as a modification of the above-described embodiment, with respect to a macro check for checking whether or not the setting of the R / W macro variable is correctly performed, a modification of the numerical control apparatus to which the concept of the present invention is applied is illustrated in the drawings. The description will be given with reference. FIG. 14 is a conceptual diagram of the macro information table 1327, FIG. 15 is a conceptual diagram showing a check screen 253 and a warning screen 254 displayed on the display 25, and FIG. It is.

  Since the numerical control device as a modification is substantially the same as the configuration of the numerical control device 1 of the above embodiment (see FIG. 1), the same reference numerals as those of the above embodiment are used and description thereof is omitted. The macro information table 1327 stored in the nonvolatile memory 13, the check screen 253 and warning screen 254 displayed on the display 25, and the macro check control by the CPU 10 will be mainly described.

  First, the macro information table 1327 stored in the nonvolatile memory 13 will be described. As shown in FIG. 14, the macro information table 1327 includes a plurality of R / W macro variables “# 100”, “# 101”, “# 102”, “# 103” set in the NC program shown in FIG. "... is remembered. These R / W macro variables are written with various setting values in the course of executing the NC program. Further, in these R / W macro variables, a write flag for storing that a value has been written (hereinafter referred to as WRITE completed) is set. When a certain R / W macro variable has been written, the write flag “1” is set, and when it has not been written, the write flag “0” is set. With such a macro information table 1327, it is possible to easily determine which R / W macro variable has been written.

  Next, the check screen 253 and the warning screen 254 displayed on the display 25 will be described with reference to FIG. When a macro check button (not shown) provided on the operation panel (not shown) of the machine tool 30 is pressed, a check screen 253 is displayed on most of the screen 25 except the lower side, and a warning screen 254 is displayed on the lower side. Is displayed. On the check screen 253, the NC program to be checked is displayed. Next, when the check start button 23 is pressed, a macro check of the NC program displayed on the check screen 251 is executed. In the macro check, reading is performed for each block in order from the lowest sequence number, and it is checked whether the R / W macro variable is normally set.

  In addition, the currently checked block is displayed surrounded by a square frame 61. As a result, the user can easily recognize the block currently being checked. Then, when there is a read instruction (hereinafter referred to as a READ instruction) for a specific R / W macro variable during the NC program check, the R / W macro variable is already a write instruction (hereinafter referred to as a WRITE instruction). ) Is checked. Values cannot be read for R / W macro variables for which no WRITE instruction has been issued. For example, in sequence number N06, if there is a READ instruction for # 103 for which no value has been written, a warning message is displayed on warning screen 254 and a message “# 103 is not written” is displayed. Is displayed. As a result, the user knows that there is a setting error in # 103 in the sequence number N06 currently being checked. Therefore, the program can be corrected promptly.

  Next, macro check control by the CPU 10 will be described with reference to the flowchart of FIG. Here, a case where the NC program displayed on the check screen 253 shown in FIG. 15 is checked will be described.

  First, when a macro check button (not shown) provided on the operation panel (not shown) of the machine tool 30 is pressed, a check screen 253 and a warning screen 254 are displayed on the display 25, respectively. On the check screen 253, a specific NC program among the NC programs stored in the NC program storage area 131 (see FIG. 3) of the nonvolatile memory 13 is read and displayed. When the check start button 23 is pressed, the macro check program stored in the ROM 11 is called and the macro check by the CPU 10 is started.

  First, various data are initialized (S31). Here, all values written in the R / W macro variables of the macro information table 1327 of the nonvolatile memory 13 are initialized. Next, one block of sequence number N01 is read (S32). Subsequently, the contents of the read NC data are analyzed (S33). Further, it is determined whether or not the analyzed content is a READ instruction for reading the value of the R / W macro variable (S34). The NC data of sequence number N01 is “# 100 = 50”. This is a WRITE command with the content “Write 50 to # 100.” Therefore, since it is not a READ instruction (S34: NO), it is subsequently determined whether or not it is a WRITE instruction for writing the value of the R / W macro variable (S39). Since “# 100 = 50” is a WRITE instruction (S39: YES), “50” is written into # 100 of the macro information table 1327 (S40). Further, in order to set that # 100 has been written, “1” is set to the write flag of # 100 (S41), and the process returns to S32.

  Next, the sequence number N02 is read (S32). Subsequently, the contents of the read NC data are analyzed (S33). Further, it is determined whether or not the analyzed content is a READ instruction for reading the value of the R / W macro variable (S34). The NC data of sequence number N02 is “# 101 = 52”. This is a WRITE instruction with the content “Write 50 to # 101.” Therefore, since it is not a READ instruction (S34: NO), it is subsequently determined whether or not it is a WRITE instruction for writing the value of the R / W macro variable (S39). Since “# 101 = 52” is a WRITE instruction (S39: YES), “52” is written into # 101 of the macro information table 1327 (S40). Further, in order to set that # 101 has been written, “1” is set to the write flag of # 101 (S41), and the process returns to S32.

  Next, the sequence number N03 is read (S32). Subsequently, the contents of the read NC data are analyzed (S33). Further, it is determined whether or not the analyzed content is a READ instruction for reading the value of the R / W macro variable (S34). The NC data of sequence number N03 is “# 102 = [# 100 + # 101/2]”. This is a WRITE instruction with the content “Write a value of [# 100 + # 101/2] to # 102”. Therefore, since it is not a READ instruction (S34: NO), it is subsequently determined whether or not it is a WRITE instruction for writing the value of the R / W macro variable (S39). Since “# 101 = 50” is a WRITE instruction (S39: YES), “# 100 + # 101/2” is written into # 102 of the macro information table 1327 (S40). Further, in order to set that # 102 has been written, “1” is set to the write flag of # 102 (S41), and the process returns to S32.

  Next, the sequence number N04 is read and analyzed in the same manner as described above (S32, S33). Note that the sequence number N04 is “G90G0” and is not an R / W macro variable READ instruction or WRITE instruction (S34: NO, S39 NO), so nothing is set in the macro information table 1327, and the sequence number The check of N04 ends. Next, it is determined whether or not it is M30 (S42). Since it is not M30 (S42: NO), it returns to S32.

  Next, the sequence number N05 is read (S32). Subsequently, the contents of the read NC data are analyzed (S33). Further, it is determined whether or not the analyzed content is a READ instruction for reading the value of the R / W macro variable (S34). The NC data of sequence number N05 is “G0X [# 100] Y [# 101]”. This is a READ instruction that reads “# 100 and # 101” with the content “position the axis at X [# 100] Y [# 101]”. Therefore, since it is a READ instruction (S34: YES), it is subsequently determined whether or not WRITE has already been performed for # 100 and # 101 (S35). However, as shown in FIG. 14, “50” and “52” are already written in # 100 and # 101 of the macro information table 1327, and the write flag “1” is set for both. Accordingly, since all have been written (S35: YES), it is subsequently determined whether or not the R / W macro variable is a WRITE command (S39). Here, since it is a READ instruction (S39: NO), it is then determined whether or not it is M30 (S42). Since it is not M30 (S42: NO), it returns to S32.

  Next, the sequence number N06 is read (S32). Subsequently, the contents of the read NC data are analyzed (S33). Further, it is determined whether or not the analyzed content is a READ instruction for reading the value of the R / W macro variable (S34). The NC data of sequence number N06 is “G0Z [# 103]”. This is the content “position the axis to Z [# 103]”. Therefore, since it is a READ instruction for reading # 103 (S34: YES), it is subsequently determined whether # 103 has already been written (S35). Here, as shown in FIG. 14, since no value is written in # 103 of the macro information table 1327 and the write flag “0” is set, WRITE is not completed (S35: NO). Since a value cannot be read from # 103 to which no value has been written, there is a high possibility that an R / W macro variable setting error has occurred.

  Therefore, a warning message is displayed on the warning screen 254, and a message “# 103 is not written” is displayed (S36). As a result, the user knows that there is a setting error in # 103 in the sequence number N06 currently being checked. Subsequently, it is determined whether or not the warning is released by pressing the release button 24 on the operation panel (S37). While it is not canceled (S37: NO), the process returns to S36 and the warning is continuously displayed on the warning screen 254. The user presses the release button 24 to ignore the warning and restart the check. When the release button 24 is pressed and the warning is released (S37: YES), the contents displayed on the warning screen 254 are deleted (S38). Subsequently, it is determined whether or not the R / W macro variable is a WRITE instruction (S39). Here, since it is a READ instruction (S39: NO, S42: NO), the process returns to S32.

  In this way, the processing is repeated after sequence number N06, the last block is read (S32), the contents are sequentially analyzed (S33), and the check proceeds. Since the last block is M30 which is an end code (S34: NO, 39: NO, S42: YES), the NC program to be checked has been checked to the end, so the macro check ends.

  As a case where setting of # 103 is not mistaken, when # 103 is set on the operation panel, or when it is operated as sequence number N11, # 110 is used as a counter so that 1 is added. Etc.

  As described above, in the modification of the numerical controller 1, when an R / W macro variable is read, a macro check can be performed to determine whether or not a value has already been written to the R / W macro variable. . The nonvolatile memory 13 stores a macro information table 1327. The macro information table 1327 stores a plurality of R / W macro variables set in the NC program. Various setting values are written in these R / W macro variables in the course of executing the NC program. Further, a write flag for storing that the value has been written is set in these R / W macro variables. Therefore, when an NC program is read and there is a READ instruction for a certain R / W macro variable, if the write flag for that R / W macro variable is not set, the value is not written. There is a high possibility of an R / W macro variable setting error. In this case, since a warning is displayed on the warning screen 254, the user can easily and quickly recognize that there is a setting error for the R / W macro variable.

  In the above-described embodiments and modifications, the recording medium for storing the modal check program and the macro check program may take various forms in addition to elements such as ROM and RAM. For example, it may be a CD-ROM, floppy (registered trademark), a program cartridge that can be inserted into a card slot, or a file server on the Internet.

  The numerical control device of the present invention can be applied to a numerical control device that controls a machine tool by setting a modal command in an NC program.

2 is a block diagram showing an electrical configuration of the numerical control device 1. FIG. 2 is a conceptual diagram of a ROM 11. FIG. 3 is a conceptual diagram of a nonvolatile memory 13. FIG. It is a conceptual diagram of the 1st modal information table 1321. It is a key map of the 2nd modal information table 1322. It is a conceptual diagram of the 3rd modal information table 1323. It is a key map of the 4th modal information table 1324. It is a conceptual diagram of the tool exchange information table 1325. FIG. 10 is a conceptual diagram of a spindle rotation information table 1326. 4 is a conceptual diagram showing a check screen 251 and a warning screen 252 displayed on the display 25. FIG. It is a flowchart of the modal check by CPU10. FIG. 12 is a flowchart continued from FIG. 11. FIG. 12 is a flowchart continued from FIG. 11. 4 is a conceptual diagram of a macro information table 1327. FIG. 4 is a conceptual diagram showing a check screen 253 and a warning screen 254 displayed on the display 25. FIG. It is a flowchart of the macro check by CPU10.

Explanation of symbols

1 Numerical control device 10 CPU
11 ROM
13 Nonvolatile Memory 25 Display 30 Machine Tool 112 Modal Check Program Storage Area 132 Information Table Storage Area 1321 First Modal Information Table 1322 Second Modal Information Table 1323 Third Modal Information Table 1324 Fourth Modal Information Table

Claims (7)

In a numerical control device for controlling a machine tool based on an NC program described for each block in NC data,
Reading means for reading the NC data for each block;
Analyzing means for analyzing the contents of the NC data read by the reading means;
Modal candidate storage means for storing in advance modal command candidates related to the operation command of the machine tool;
Modal judging means for judging whether or not the modal instruction is set in the block analyzed by the analyzing means;
A modal setting storage means for storing that the modal instruction is set when the modal determination means determines that the modal instruction is set;
When the content analyzed by the analyzing means is the operation command, the modal candidate storage unit is configured to store the modal instruction candidate related to the operation command based on the setting stored in the modal setting storage unit. Modal setting determination means for determining whether or not all of are set,
A numerical control apparatus comprising: notifying means for notifying when it is determined by the modal setting determining means that at least one of the modal instruction candidates related to the operation instruction is not set. .   When it is determined by the modal setting determining means that all of the modal command candidates related to the operation command are set by the modal setting means, or when notified by the notifying means, the modal The numerical control apparatus according to claim 1, further comprising setting cancellation means for canceling the setting by the setting means.   The said notification means is a display apparatus which displays the said modal command which is not set by the said modal setting means among the candidates of the said modal command relevant to the said operation command. Numerical control unit.   The numerical control device according to claim 1, wherein the modal candidate storage unit stores a candidate for the modal instruction for each of the plurality of operation instructions.   The numerical control device according to claim 1, wherein the operation command is a command related to at least one of axis movement, interpolation movement, circular interpolation, and fixed cycle. A control program for functioning a numerical control device that performs numerical control of a machine tool,
A first step of reading NC data for each block;
A second step of analyzing the contents of the NC data read in the first step;
A third step of determining whether a modal instruction is set in the block analyzed in the second step;
A fourth step of storing in the modal setting storage means that the modal instruction is set when it is determined in the third step that the modal instruction is set;
When the content analyzed in the second step is an operation command of the machine tool, a modal candidate storage unit that stores in advance a modal command candidate related to the operation command is stored in the modal setting storage unit. A fifth step of determining whether all of the candidates for the modal instruction related to the operation instruction are set based on the set setting;
A control program comprising: a sixth step for notifying in the fifth step that any one of the candidates for the modal command related to the operation command is not set.   A recording medium in which the control program according to claim 6 is recorded.

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