JP4558675B2 - Numerical controller - Google Patents

Description

  The present invention relates to a numerical control device.

  The numerical control device executes numerical control processing based on a machining program registered in a memory in advance or input from the outside, and drives a machine tool or the like connected to the numerical control device according to the processing result to process a workpiece (workpiece). ).

  FIG. 10 is a diagram schematically illustrating a configuration of a conventional numerical control device. The numerical controller 501 performs data input / output processing with a man-machine interface (MMI) unit 531 such as a display device and a keyboard, and processes data such as machining programs and parameters input from the man-machine interface unit 531. The input / output data processing unit 511 stores the processing program and setting data in the storage unit 513, and the processing program and parameter data input from the external input / output device 532 via the line as the processing program and setting data, respectively. The communication processing unit 512 stored in 513, the storage unit 513 that stores the processing program and setting data processed by the input / output data processing unit 511 or the communication processing unit 512, and the processing program stored in the storage unit 513 are read out. Machining program analysis for program analysis A processing unit 514 that executes a ladder sequence based on a control command of the machining program, and a PLC (Programmable Logic Controller) interface unit 516 provided between the machining program analysis processing unit 514 and the ladder processing unit 515. A machine control processing unit 517 for controlling the machine tool 540 based on the processing result of the ladder processing unit 515, and an interpolation process for generating control data for each direction component by vector processing of the control data from the machine control processing unit 517 518, an axis control processing unit 519 for controlling the machine tool 540 based on the control data generated by the interpolation processing unit 518, and a digital signal for controlling the machine tool 540 based on the control data from the machine control processing unit 517 And an I / O control unit 520.

  The machine tool 540 includes a servo motor 542 that is driven by the control of the axis control processing unit 519 via the servo amplifier 541 and a spindle that moves the spindle (spindle) by the control of the axis control processing unit 519 via the main shaft amplifier 543. A motor 544 and a tool changer 545 for changing a tool attached to the spindle under the control of the digital signal I / O control unit 520 are provided.

  The operation in the numerical control apparatus 501 will be briefly described. The machining program analysis processing unit 514 reads the machining program in the storage unit 513 and outputs a control command described in the machining program via the PLC interface unit 516. The data is passed to the processing unit 515, and the ladder processing unit 515 executes a ladder sequence corresponding to the control instruction. When the machining program analysis processing unit 514 receives a FIN, which is a completion signal indicating that the operation corresponding to the control command issued to the ladder processing unit 515 has been completed, from the ladder processing unit 515, the machining program analysis processing unit 514 Control instructions are executed in order.

  The original work of the numerical control device 501 is a process such as cutting or grinding of the work, but there are many auxiliary works for performing this process. For example, attachment / detachment of a workpiece, start / stop of a spindle motor, on / off of cutting oil, and the like. As a control command for executing these auxiliary tasks, the machining program is provided with a command called M code.

  FIG. 11A is a diagram of a conventional example of M code processing. As shown in FIG. 11A, when an M code is commanded in the machining program, the M code information is acquired by the ladder processing unit 515, and the corresponding M code processing is executed by the ladder processing unit 515. For example, when the machining program analysis processing unit 514 reads an M code “M25” from the machining program, the M code “M25” is passed to the ladder processing unit 515 via the PLC interface unit 516. At this time, the machining program analysis processing unit 514 waits without proceeding to the next block until the FIN for the M code “M25” is returned from the ladder processing unit 515. When the ladder processing unit 515 executes the M code “M25” and completes the processing, the ladder processing unit 515 returns FIN to the machining program analysis processing unit 514. By receiving this FIN, the machining program analysis processing unit 514 can proceed to the next block.

  Incidentally, some M codes do not need to wait for completion. When performing such M code processing, in the M code processing method shown in FIG. 11A, the machining program analysis processing unit 514 continues until the M code FIN included in the read block is returned. I was in a waiting state without going to the block.

  In order to solve such problems, various proposals have conventionally been made. For example, when the operation of the machine tool 540 can be performed in parallel with other processes, the interlock state is stored, and the next process is performed without waiting for a completion signal from the machine tool 540. However, in the interlock state, it is determined whether the subsequent process is a process that cannot be performed in parallel. For example, the method is implemented after waiting for FIN (see, for example, Patent Document 1).

  FIG. 11B is a diagram of a conventional example of M code processing in the case described in Patent Document 1. As shown in FIG. 11-2, when an M code is specified in the machining program, the ladder processing unit 515 acquires M code information. The ladder processing unit 515 executes the corresponding M code processing after returning the FIN for this M code (referred to as the FIN signal immediately in Patent Document 1) even though the M code has not been terminated. For example, when an M code “M25” is designated by the machining program analysis processing unit 514 from the machining program, the M code “M25” is passed to the ladder processing unit 515. When the ladder processing unit 515 acquires information on the M code instructed from the machining program, the FIN (immediate FIN signal) is immediately returned before the processing of the M code “M25” is completed. Thereafter, the ladder processing unit 515 performs “M25” processing. On the other hand, the machining program analysis processing unit 514 executes processing of the next block that does not require the processing result of the M code “M25”. Thus, since the FIN is returned immediately after the M code command, the machining program can proceed to the next block. However, in this case, the machining program is executed in a state where the M code processing is not completed.

Japanese Patent Laid-Open No. 7-40187

  As described with reference to FIG. 11A, the conventional numerical control device 501 acquires M code information in the ladder processing unit 515 in response to an M code command from the machining program, executes the corresponding M code processing, and completes the processing. Later, FIN is returned to the machining program analysis processing unit 514 side. The machining program analysis processing unit 514 receives the FIN, interprets that the M code processing has been completed, and proceeds to the next block of the machining program. However, some M codes do not have to wait for completion in the next block, but need only be completed before the next block. In such a case, there is a problem that a waiting time is wasted if waiting for completion in the next block.

  Further, as described with reference to FIG. 11B, in order to shorten the time, when the FIN processing is returned as soon as the M code is acquired by the ladder processing unit 515, the processing program analysis processing unit 514 displays the next block of the processing program. However, the machining program analysis processing unit 514 cannot confirm whether the M code processing is completed in the ladder processing unit 515. Therefore, there is a problem that the M code processing and the machining program analysis processing may interfere depending on the timing.

  The present invention has been made in view of the above, and it is sufficient that an M code exists in a machining program block of the numerical control apparatus, and the M code has completed the process for a while before the block. To obtain a numerical control device capable of confirming whether or not the M code processing in the ladder processing unit is completed in the machining program analysis processing unit when the FIN is returned as soon as the M code is acquired in the ladder processing unit With the goal.

  In order to achieve the above object, a numerical control device according to the present invention includes a machining program analysis processing unit that analyzes a machining program and causes a ladder processing unit to execute a predetermined command in the machining program, and the machining program analysis processing unit. Ladder processing means for executing a ladder sequence corresponding to the command of the control, and control connected to the apparatus based on the analysis result of the machining program by the machining program analysis processing means and the execution result of the ladder sequence of the ladder processing means And a machine control processing unit that performs predetermined control on the target, wherein the ladder processing unit instructs the auxiliary processing for performing the processing from the processing program analysis processing unit. Indicates that the processing of the received M code has been pseudo-finished immediately A provisional processing end signal output function for transmitting a constant processing end signal, and a main processing end signal output function for transmitting a main processing end signal indicating that the processing of the received M code has actually ended. Upon receiving the provisional processing end signal, the program analysis processing means performs processing on the next block until an M code processing completion waiting instruction for receiving the processing end signal for the M code in the machining program is read. Proceeding, when the main processing end signal is not received until the M code processing completion waiting instruction is read, the processing of the next block is not executed until the main processing end signal is received. .

  According to the present invention, when processing is performed using the processing result for the M code, if the processing end signal is not received until the M code processing completion waiting instruction for the M code is read, Since the processing of the following blocks is not executed, the processing program analysis processing unit can know the execution result of the M code processing by the ladder processing unit and prevent the M code processing and the processing of the processing program from interfering with each other. It has the effect of being able to. In addition, there is an effect that it is possible to easily reduce the cycle time by omitting the dead time due to completion of the M code processing.

  Exemplary embodiments of a numerical controller according to the present invention will be explained below in detail with reference to the accompanying drawings. Note that the present invention is not limited to these embodiments.

Embodiment 1 FIG.
FIG. 1 is a diagram showing an example of the configuration of the first embodiment of the numerical controller according to the present invention. The numerical control device 1 performs input / output processing of data with respect to a man-machine interface unit 31 such as a display device and a keyboard, and each of the processing programs and parameters input from the man-machine interface unit 31 is a processing program. And the input / output data processing unit 11 stored in the storage unit 13 as setting data, and data such as machining programs and parameters input from the external input / output device 32 via the line are stored in the storage unit 13 as machining programs and setting data, respectively. The communication processing unit 12, the storage unit 13 that stores the processing program and setting data processed by the input / output data processing unit 11 or the communication processing unit 12, and the processing program stored in the storage unit 13 is read and analyzed. Machining program analysis processing unit 14 and control instruction of machining program Based on the ladder processing unit 15 for executing the ladder sequence, the PLC interface unit 16 provided between the machining program analysis processing unit 14 and the ladder processing unit 15, and the machine tool 40 based on the processing result of the ladder processing unit 15. A machine control processing unit 17 that controls the control data, an interpolation processing unit 18 that vectorizes the control data from the machine control processing unit 17 to generate control data for each direction component, and control data generated by the interpolation processing unit 18 An axis control processing unit 19 that controls the machine tool 40 based on this, and a digital signal I / O control unit 20 that controls the machine tool 40 based on the control data from the machine control processing unit 17 are provided. Here, the machining program analysis processor 14 corresponds to the machining program analysis processor in the claims, the ladder processor 15 corresponds to the ladder processor, and the machine control processor 17 also corresponds to the machine control processor. It corresponds to.

  The machine tool 40 includes a servo motor 42 that is driven by the control of the axis control processing unit 19 via the servo amplifier 41 and a spindle that moves the spindle (spindle) by the control of the axis control processing unit 19 via the main shaft amplifier 43. A motor 44 and a tool changer 45 that changes a tool attached to the main shaft under the control of the digital signal I / O control unit 20 are provided.

  Here, the machining program analysis processing unit 14 reads out the machining program stored in the storage unit 13, performs program analysis, and instructs the ladder processing unit 15 to instruct processing, and a ladder processing unit. 15 includes a provisional FIN reception function 142 for receiving a provisional FIN for an M code processing instruction from 15 and a main FIN reception function 143 for receiving a main FIN for an M code processing instruction from the ladder processing unit 15. The provisional FIN corresponds to the provisional processing end signal in the claims, and the FIN similarly corresponds to the processing end signal.

  In the first embodiment, a new command for obtaining the execution result of the M code is defined as the machining program. That is, after executing the M code, a command “MF” is defined as a command (M code completion waiting command) for obtaining the execution result of the M code at an arbitrary position in the machining program. More specifically, the execution result of the M code can be obtained by executing “MF” immediately before the block in the machining program that executes the M code and performs processing using the M code. it can. In the M code, a predetermined two-digit numerical value is added after “M” to execute a predetermined process. In this “MF”, the value of the previously executed M code is set. In order to obtain this, a 2-digit numerical value of the previously executed M code is added after “MF”. Thereby, the processing result of the M code requested by the program analysis processing function 141 of the machining program analysis processing unit 14 can be designated.

  Further, when the program analysis processing function 141 receives a provisional FIN by the provisional FIN reception function 142 after issuing an instruction to the ladder processing unit 15 to execute the M code, the program analysis processing function 141 proceeds to processing of the next block described in the machining program. Has a function to advance.

  Furthermore, when the instruction from the PLC processing execution function 151 that executes normal PLC processing and the machining program analysis processing unit 14 is M code, the ladder processing unit 15 performs provisional processing on the M code. The provisional FIN output function 152 that outputs a provisional FIN that is a signal indicating the completion, and the M code that has output the provisional FIN signal using the M code received from the machining program analysis processing unit 14 are actually executed and terminated. A final FIN output function 153 that outputs the final FIN, which is a signal to be displayed. The provisional FIN output function 152 corresponds to the provisional process end signal output function of the claims, and the FIN output function 153 similarly corresponds to the process end signal output function.

  Here, the M code processing of the numerical control apparatus having such a configuration will be described with a specific example. FIG. 2 is a flowchart showing an example of a procedure of M code command processing in the machining program analysis processing unit, FIG. 3 is a flowchart showing an example of a procedure of M code execution processing in the ladder processing unit, and FIG. It is a flowchart which shows an example of the procedure of MF command processing in a process program analysis process part. FIG. 5 is a diagram showing an example of a machining program and a ladder sequence corresponding to the machining program for explaining the processing of the M code of the numerical controller.

  First, the M code execution process will be described with reference to FIG. The program analysis processing function 141 of the machining program analysis processing unit 14 of the numerical control apparatus 1 analyzes the machining program stored in the storage unit 13 and sequentially executes the blocks. As shown in the machining program of FIG. 5, the program analysis processing function 141 executes processing in order from the upper block. Here, when a block including M code is read as shown in line 101 of the machining program in FIG. 5 (step S11), execution of the M code is instructed to the ladder processing unit 15 via the PLC interface unit 16 (step S11). Step S12). Thereafter, the provisional FIN receiving function 142 determines whether or not a provisional FIN corresponding to the M code instructed in step S12 is received from the ladder processing unit 15 (step S13). If the provisional FIN is not received (No in step S13), the process waits until the provisional FIN is received. On the other hand, when the provisional FIN is received from the ladder processing unit 15 as shown in FIG. 5 (Yes in step S13), the provisional FIN reception function 142 notifies the program analysis processing function 141 that the provisional FIN has been received. The program analysis processing function 141 proceeds to the next block in the machining program (step S14). In the case of FIG. 5, when the program analysis processing function 141 receives the provisional FIN, the program analysis processing function 141 proceeds to the processing of the block in the row 102. Thus, the M code command process is completed.

  Next, the M code execution process will be described with reference to FIG. When the PLC processing execution function 151 of the ladder processing unit 15 receives the M code from the machining program analysis processing unit 14 via the PLC interface unit 16 (step S31), the provisional FIN output function 152 performs processing of the received M code. Although not actually finished, a provisional FIN, which is a signal for enabling the machining program analysis processing unit 14 to execute processing of the next block, is sent to the machining program analysis processing unit 14 via the PLC interface unit 16. (Step S32). Thereafter, the PLC process execution function 151 executes the M code received in step S31 (step S33). When the execution of the M code by the PLC processing execution function 151 is completed, the FIN output function 153 processes the FIN, which indicates that the processing of the M code received in step S31 has actually ended, via the PLC interface unit 16. The program is sent to the program analysis processing unit 14 (step S34). Thus, the M code execution process ends.

  Finally, the MF command process will be described with reference to FIG. When the program analysis processing function 141 of the machining program analysis processing unit 14 reads a block including the MF command as shown in the line 103 of the machining program in FIG. 5 (step S51), the FIN reception function 143 receives the MF command. It is confirmed whether the corresponding FIN of the M code has been received (step S52). If the final FIN has not been received (No in step S52), the process waits until the final FIN is received. As shown in FIG. 5, when the FIN is already received before the MF command for the M code “M25” is executed by the machining program analysis processing unit 14, the FIN receiving function 143 receives the FIN. This is notified to the program analysis processing function 141. Thereby, the program analysis processing function 141 can proceed to the next block in the machining program and perform processing. For example, in the case of FIG. 5, the program analysis processing function 141 can proceed to the processing of the block in the row 104 that requires the processing result of the M code “M25” after reading the MF command in the row 103. Thus, the MF command process ends.

  According to the first embodiment, the ladder processing unit 15 returns the temporary FIN to the machining program analysis processing unit 14 as soon as the M code is received, and the final FIN is processed by the machining program analysis processing when the M code processing is completed. Then, the machining program analysis processing unit 14 executes the M code processing completion waiting command before receiving the final FIN before the block for which the result of the M code commanded in the previous block is desired. Since the processing proceeds to the next block in the machining program, the machining program analysis processing unit 14 can know the execution result of the M code processing by the ladder processing unit 15, and the M code processing and the processing program processing Has the effect of preventing interference. In addition, there is an effect that it is possible to easily reduce the cycle time by omitting the dead time due to completion of the M code processing.

Embodiment 2. FIG.
In the first embodiment, the ladder processing unit 15 passes the provisional FIN to the machining program analysis processing unit 14 as soon as the M code is received, and the machining program analysis processing unit 14 receives the provisional FIN and receives the next in the machining program. In the second embodiment, the case where the ladder processing unit 15 does not return the provisional FIN to the machining program analysis processing unit 14 will be described.

  FIG. 6 is a diagram showing an example of the configuration of the second embodiment of the numerical controller according to the present invention. This numerical control device 1a has a configuration in which the provisional FIN reception function 142 of the machining program analysis processing unit 14 and the provisional FIN output function 152 of the ladder processing unit 15 are removed from the numerical control device of the first embodiment. . In other words, the program analysis processing function 141 of the machining program analysis processing unit 14a performs machining immediately after issuing a command to execute the M code to the ladder processing unit 15a when a block including the M code in the machining program is read. Proceed to the next block in the program. Further, upon receiving a command to execute the M code from the machining program analysis processing unit 14a, the PLC processing execution function 151 of the ladder processing unit 15a immediately executes a process corresponding to the M code according to the ladder sequence. In the second embodiment, since the ladder processing unit 15a does not output a provisional FIN, the “final FIN” in the first embodiment is expressed as “FIN”. Therefore, the “final FIN output function” has been changed to the name “FIN output function”, but the processing operation is the same. In addition, the same code | symbol is attached | subjected to the component same as Embodiment 1, and the description is abbreviate | omitted. Further, the machining program analysis processing unit 14a corresponds to the machining program analysis processing means in the claims, the ladder processing unit 15a corresponds to the ladder processing means, and the machine control processing unit 17 also corresponds to the machine control processing means. The FIN output function 153a similarly corresponds to the main processing end signal output function, and the FIN corresponds to the main processing end signal.

  Here, the processing of the M code of the numerical controller 1a having such a configuration will be described with a specific example. FIG. 7 is a flowchart showing an example of the procedure of the M code command processing in the machining program analysis processing unit, FIG. 8 is a flowchart showing an example of the procedure of the M code execution processing in the ladder processing unit, and FIG. It is a flowchart which shows an example of the procedure of MF command processing in a process program analysis process part. FIG. 9 is a diagram showing an example of a machining program and a ladder sequence corresponding to the machining program for explaining the processing of the M code of the numerical controller.

  First, the M code execution process will be described with reference to FIG. The program analysis processing function 141 of the machining program analysis processing unit 14a of the numerical control device 1a analyzes the machining program stored in the storage unit 13 and sequentially executes the blocks. As shown in the machining program of FIG. 9, the program analysis processing function 141 executes processing in order from the upper block. Here, when a block including M code is read as shown in line 111 of the machining program of FIG. 9 (step S71), execution of the M code is instructed to the ladder processing unit 15a via the PLC interface unit 16 (step S71). Step S72). Thereafter, the program analysis processing function 141 proceeds to the next block in the machining program (step S73). In the case of FIG. 9, the program analysis processing function 141 proceeds to the processing of the block of the line 112 immediately after instructing the ladder processing unit 15 to perform the process including the M code of the line 111. Thus, the M code command process is completed.

  Next, the M code execution process will be described with reference to FIG. When receiving the M code from the machining program analysis processing unit 14a via the PLC interface unit 16 (step S91), the PLC processing execution function 151 of the ladder processing unit 15a executes the received M code (step S92). When the execution of the M code by the PLC process execution function 151 is finished, the FIN output function 153a analyzes the processing program analysis via the PLC interface unit 16 through the FIN indicating that the process of the M code received in step S31 is finished. The data is sent to the processing unit 14a (step S93). Thus, the M code execution process ends.

  In the example shown in FIG. 9, the row 111 includes two M codes “M25” and “M26”. In such a case, the ladder processing unit 15a executes the M code in the order described. That is, “M25” is executed first, and then “M26” is executed. Then, after the processing of the two M codes is completed, the processing program analysis processing unit 14a is notified of FIN indicating that the processing of each M code is completed.

  Note that the MF command processing is the same as that of the first embodiment shown in FIG.

  In the case of the example shown in FIG. 9, when processing is performed using the execution result of the M code executed in the previous block in the machining program, an M code completion waiting command corresponding to the M code is executed before the processing. (MF) is executed. As a result, a FIN output corresponding to the M code is obtained, and the process can proceed to the next process. For example, in the case of FIG. 9, since the processing result of the M code “M25” is required in the block of the row 114, “MF25” for obtaining the execution result of the M code “M25” is displayed in the previous row 113. Executed. Then, the processing of the next row 114 is executed based on the FIN of “M25” as the result. Here, “25” in “MF25” is identification information assigned to be associated with “25” of the M code “M25”. Similarly, in the block in the row 115, “MF26” for obtaining the execution result of the M code “M26” is executed. Here, “26” in “MF26” is identification information assigned to be associated with “26” of the M code “M26”. In this way, since the M code completion wait command (MF) is associated with the M code executed in the previous block, it is possible to set completion wait for each M code, and to The processing result is not complicated.

  According to the second embodiment, the ladder processing unit 15a receives the M code, and when the processing is completed, returns the FIN to the machining program analysis processing unit 14a, and the machining program analysis processing unit 14a receives the M code. As soon as execution is instructed to the ladder processing unit 15a, the processing proceeds to the next block in the machining program, and an M code processing completion waiting instruction is executed before the block for which the result of the M code instructed in the previous block is desired. Since the processing is advanced to the next block in the machining program after receiving the FIN, the machining program analysis processing unit 14a can know the execution result of the M code processing by the ladder processing unit 15a. There is an effect that interference between the code processing and the processing of the machining program can be prevented. In addition, there is an effect that it is possible to easily reduce the cycle time by omitting the dead time due to completion of the M code processing. Furthermore, by designating necessary FINs for each of a plurality of M codes, it is possible to eliminate a wasteful waiting time and to realize a reduction in cycle time.

  As described above, the numerical control device according to the present invention is suitable for executing a machining program having an M code.

It is a figure which shows an example of a structure of Embodiment 1 of the numerical control apparatus by this invention. It is a flowchart which shows an example of the procedure of the M code instruction | command process in a process program analysis process part. It is a flowchart which shows an example of the procedure of the M code execution process in a ladder process part. It is a flowchart which shows an example of the procedure of MF command processing in a process program analysis process part. It is a figure which shows an example of the processing sequence for demonstrating the process of the M code | cord | chord of a numerical control apparatus, and the ladder sequence corresponding to the processing program. It is a figure which shows an example of a structure of Embodiment 2 of the numerical control apparatus by this invention. It is a flowchart which shows an example of the procedure of the M code instruction | command process in a process program analysis process part. It is a flowchart which shows an example of the procedure of the M code execution process in a ladder process part. It is a flowchart which shows an example of the procedure of MF command processing in a process program analysis process part. It is a figure which shows typically the structure of the conventional numerical control apparatus. It is a figure which shows the prior art example of M code processing. It is a figure which shows the prior art example of M code processing.

Explanation of symbols

1, 1a Numerical control device 11 Input / output data processing unit 12 Communication processing unit 13 Storage unit 14, 14a Machining program analysis processing unit 15, 15a Ladder processing unit 16 PLC interface unit 17 Machine control processing unit 18 Interpolation processing unit 19 Axis control processing Unit 20 Digital signal I / O control unit 21 Ladder sequence 31 Man-machine interface unit 32 External input / output device 40 Machine tool 141 Program analysis processing function 142 Provisional FIN reception function 143 FIN reception function 151 PLC processing execution function 152 Provisional FIN output function 153 FIN output function 153a FIN output function

Claims (3)

Machining program analysis processing means for analyzing the machining program and causing the ladder processing means to execute a predetermined command in the machining program;
Ladder processing means for executing a ladder sequence corresponding to a command from the machining program analysis processing means;
Machine control processing means for performing predetermined control on a control target connected to the apparatus, based on an analysis result of the machining program by the machining program analysis processing means and an execution result of a ladder sequence of the ladder processing means;
In a numerical control device comprising:
The ladder processing means is
Upon receipt of an M code for instructing auxiliary processing for performing processing from the processing program analysis processing means, a temporary processing end signal indicating that the processing of the received M code has been pseudo-finished is transmitted. Provisional processing end signal output function,
A main processing end signal output function for transmitting a main processing end signal indicating that the processing of the received M code has actually ended;
With
When the processing program analysis processing means receives the provisional processing end signal, it continues to the next block until it reads an M code processing completion wait command for receiving the main processing end signal for the M code in the processing program. In the case where the main processing end signal is not received until the processing is advanced and the M code processing completion waiting instruction is read, the processing of the next block is not executed until the main processing end signal is received. Numerical control device. Machining program analysis processing means for analyzing the machining program and causing the ladder processing means to execute a predetermined command in the machining program;
Ladder processing means for executing a ladder sequence corresponding to a command from the machining program analysis processing means;
Machine control processing means for performing predetermined control on a control target connected to the apparatus, based on an analysis result of the machining program by the machining program analysis processing means and an execution result of a ladder sequence of the ladder processing means;
In a numerical control device comprising:
The ladder processing means is
A processing end signal output function for transmitting a main processing end signal indicating that the processing of the M code for instructing an auxiliary processing for performing processing received from the processing program analysis processing means is completed;
When the machining program analysis processing means reads a block containing M code from the machining program, the machining program analysis processing means processes the next block in the machining program immediately after transmitting a command to execute the M code to the ladder processing means. The process end signal is received when the process end signal is not received until the M code process completion wait command for reading the process end signal for the M code in the machining program is read. A numerical control device characterized by having a function of not executing the processing of the next block until it is done.   The numerical control device according to claim 1, wherein the M code processing completion waiting instruction can be set at an arbitrary position in the machining program.

Images