JP5765964B2 - Operation method and operation apparatus for multi-task machine - Google Patents

Description

  The present invention relates to an operation method and an operation apparatus for a multi-task machine having a plurality of different types of processing means.

  As a combined processing machine, there is a punch / laser combined processing machine that performs punching and laser processing (see Patent Document 1 below). In this combined processing machine, while one of punch processing and laser processing is being performed, the processing unit that performs the other processing is in a standby state, and the standby processing unit consumes standby power. .

  For example, while punching is being performed in the punching unit of the above multi-task machine, there is a waiting time for the laser processing unit (see Patent Document 2 below), and during the waiting time, the next laser processing is quickly started. In order to raise, it consumes standby power.

JP 2006-192465 A Japanese Patent Laid-Open No. 9-271966

  As described above, since the machining unit that is not performing machining during operation of the multi-task machine consumes standby power, it is desired to further reduce standby power from the viewpoint of energy consumption.

  Therefore, an object of the present invention is to reduce energy consumption during standby of a processing means that is not performing processing during operation of a multi-task machine.

The present invention, the operation of the multifunction processing machine having a plurality of processing means for different types, the operating mode of the at least one processing means among the plurality of processing means, not performed the processing of the machining operation processing In the operation method of the multi-tasking machine controlled by the control means that switches between the standard mode when the energy consumption is normally in standby time and the energy-saving mode that consumes less energy than the standard mode, it is possible to when performing the processing operation based on the same program Te, the processing operation of, while performing the operation mode as the standard mode, the processing of the one of the processing means in the processing operation was carried out for one sheet of the work start time, the processing end time, and a processing time storing step of storing the processing completion time of the program is terminated The stored the machining start time, machining end time, and based on the processing completion time, the operation mode of said one processing means in said machining operation of the workpiece after the second sheet, the energy saving in the processing break time And a transition determination step for determining whether or not to shift to the mode.

  According to the present invention, the machining means that has not been machined is made to stand by in an energy saving mode in which the energy consumption at the time of standby of the machining means is less than the standard mode at the time of normal standby. It is possible to reduce energy consumption when the processing means that is not in standby.

It is a top view which shows the punch laser complex processing machine concerning one Embodiment of this invention. It is a time chart which shows the operation mode of the laser processing part corresponding to the processing operation | work of the 1st workpiece | work by the punch laser composite processing machine of FIG. It is a time chart which shows the operation mode of the laser processing part corresponding to processing operation | work of the 2nd workpiece | work by the punch laser composite processing machine of FIG. It is a time chart which shows the operation mode of the laser processing part corresponding to the processing operation | work of the 3rd workpiece | work by the punch laser composite processing machine of FIG. It is the power consumption change characteristic figure shown by comparing the case where an energy saving mode is adopted with respect to a laser processing part, and the case where it is not adopted. It is a flowchart which shows the algorithm which calculates the timing of the energy-saving mode change by NC apparatus of FIG. It is a flowchart which shows the algorithm performed during the workpiece | work processing of the 1st sheet | seat by the NC apparatus of FIG. It is a flowchart which shows the algorithm which judges whether it should be in an energy saving mode after the Nth laser processing by NC apparatus of FIG. It is a flowchart which shows the algorithm performed during the workpiece | work processing after the 2nd sheet | seat by the NC apparatus of FIG. It is a time chart which shows the operation | movement mode of the processing program and laser processing part with respect to the 2nd and 3rd workpiece | work. 11 is a time chart showing a machining program different from that in FIG. 10 for the second and third workpieces and the operation mode of the laser machining unit. It is a time chart corresponding to FIG. 4 which shows embodiment which makes a punch process part energy saving mode.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a plan view showing a punch / laser combined processing machine 1 as a combined processing machine according to an embodiment of the present invention. The combined punch / laser processing machine 1 includes a punching section A and a laser processing section B. The punching portion A and the laser processing portion B constitute a plurality of different processing means.

  A gate-shaped frame 3 stands on a base (not shown), and a rotatable upper turret 5 is provided on the frame 3 so as to face a lower turret 7 arranged on the base. On the upper turret 5 and the lower turret 7, a plurality of punches P and dies D facing each other at appropriate intervals in the circumferential direction are mounted to constitute the punched portion A described above.

  The upper turret 5 and the lower turret 7 rotate in synchronization, and the punch P and the die D for processing are indexed to the punch processing position K. By punching up and down a striker (not shown) at the punching position K, punching is performed on the plate-shaped workpiece W positioned at the punching position K in cooperation with the punch P and the die D.

  On the base, a carriage base 11 having a length substantially equal to the entire machine width of the punch / laser combined machine 1 is provided so as to be movable in the Y-axis direction by a drive motor and a ball screw (not shown). The carriage base 11 is provided with a carriage 13 that can be moved in the X direction by a drive motor and a ball screw (not shown). The carriage 13 is provided with a plurality of workpiece clamps 15 for clamping the workpiece W on the processing table 14. Yes.

  In the combined punch / laser processing machine 1, a laser processing head 17 is provided at a position on the left side in the X-axis direction with respect to the punching position K described above so as to be movable in the Y-axis direction by a drive motor and a ball screw (not shown). Thus, the laser processing part B described above is configured.

Laser machining head 17 with respect to punching position K, to move the predetermined range in the Y-axis direction in the offset laser processing position L the distance X ₀ to X-axis direction left in Figure 1.

  The punch / laser composite processing machine 1 includes a front table 18 on the opposite side of the laser processing portion B with the portal frame 3 interposed therebetween, and a laser oscillator 19 near the lower portion of the front table 18 in FIG. ing. The beam guide means for guiding the laser beam from the laser oscillator 19 to the laser processing head 17 includes a first bend mirror 21 on the side of the laser processing position L and a second bend mirror 23 installed on the upper part of the laser processing head 17. doing. Even if the laser processing head 17 moves to an arbitrary position in the Y-axis direction, the laser beam LB output from the laser oscillator 19 is guided to the laser processing head 17 via the bend mirrors 21 and 23, and is sent to the laser processing head 17. After being condensed by the provided condensing lens, the workpiece W is irradiated toward the workpiece W.

  When performing laser processing, after aligning the laser processing head 17 with the processing start position of the workpiece W, the carriage 13 is moved in the X-axis direction while irradiating the laser beam, and the workpiece W is moved in the X-axis direction. At the same time, the laser processing head 17 is moved in the Y-axis direction. In this way, laser processing is performed on a desired position of the workpiece W. Reference numeral 24 denotes a line device that carries the workpiece W into and out of the front table 18.

  The combined punch / laser processing machine 1 having such a configuration is controlled in accordance with a processing program that is incorporated and set in advance by the NC device 25, and punching and laser processing are performed on the workpiece W.

  Here, an example of a general machining program in the punch / laser combined machining machine 1 is shown below. First, after the workpiece W is loaded by the line device 24 in the “preparation process before machining”, if there is an automatic mold changer, the mold is exchanged and then the workpiece W loaded in the “punch machining process” is transferred to the workpiece W On the other hand, punching, molding, tapping, etc. are performed.

  Next, in the “laser processing step”, the punch processing mode is switched to the laser processing mode, and laser processing is performed on the workpiece W processed by the punch processing step.

  After that, the laser processing mode is switched to the punching mode in preparation for processing for the workpiece W to be loaded next. Note that punching may be performed after laser processing.

  In the final “post-processing setup step”, the processed workpiece W is unloaded by the line device 24. At that time, nozzle cleaning of the laser processing head 17 is performed depending on circumstances.

  In the combined punch / laser processing machine 1 that performs such a processing operation, the laser processing unit is used in processes other than the laser processing process, such as during the punch processing in the punch processing unit A and during loading and unloading of the workpiece W. B is in a standby state without turning off the power in preparation for laser processing after punching, and consumes standby power.

  In this embodiment, in order to reduce the power consumption as the energy consumption in the standby state of the laser processing unit B, the standby power consumption is less than the standard mode from the normal standard mode. Set to energy saving mode.

  The standard mode in the standby state of the laser processing unit B here is a state in which the base discharge (seed discharge) of the laser oscillator 19 is continuously performed, and the laser processing can be performed immediately. The base discharge is a state in which the laser light is not emitted by lowering the discharge voltage with respect to the processable state in which the laser light is emitted.

  On the other hand, the energy saving mode is a wide-area control in which the supply pressure of the laser gas in the carbon dioxide laser is lowered or the temperature adjustment range by the temperature controller 27 for cooling the laser oscillator 19 is expanded while the base discharge is stopped. The state to do. Wide-area control can reduce the frequency of operation and stop of the compressor, thereby reducing power consumption.

  For example, the standby power of the laser oscillator 19 is 15.8 kW in the standard mode and 3.3 kW in the energy saving mode. The standby power of the temperature controller 27 is 16 kW in the standard mode, and 11 kW in the energy saving mode. Here, the energy saving mode is a case where the laser oscillator 19 stops the base discharge and the turbo blower for supplying the laser gas, and the temperature controller 27 is a case where the temperature adjustment range is a wide range control.

  The energy-saving mode is designed to save power compared to the standard mode by reducing the supply pressure of the laser gas and controlling the temperature adjustment range by the temperature controller 27 in a wide range. Here, a certain amount of time is required for the time for shifting from the standard mode to the energy saving mode (hereinafter referred to as the transition time) and the time for returning from the energy saving mode to the standard mode (hereinafter referred to as the recovery time).

  For example, the laser oscillator 19 has a transition time of 35 seconds and a recovery time of 10 seconds, and the temperature controller 27 has a transition time of 10 seconds and a recovery time of 40 seconds.

  As another energy saving mode, the laser oscillator 19 may stop the base discharge but leave the turbo blower in operation, and the temperature controller 27 may make the temperature adjustment range narrower than the wide-area control described above. The standby power in this case is closer to the standard mode than the above numerical values, and the transition time and the recovery time are also shortened from the above numerical values.

  In the present embodiment, taking into account the transition time to the energy saving mode and the recovery time to the standard mode, the transition from the standard mode to the energy saving mode and the recovery from the energy saving mode to the standard mode are performed more efficiently. I have to. Specifically, the time during which laser processing was performed in the previous program processing is stored, and the laser processing section B is efficiently operated in the energy saving mode during the second and subsequent same program processing.

  FIG. 2 is a time chart when the first workpiece W is processed by the punch / laser combined processing machine 1 of FIG. As a processing operation, after carrying in the material for loading the workpiece W into the punch / laser composite processing machine 1, punching is performed by the punching section A, and then laser processing is performed by the laser processing section B at time T1. .

  Laser processing ends at time T2, and then material unloading is performed to unload the workpiece W from the punch / laser composite processing machine 1, and processing of the first workpiece W is completed at time T3 (processing program ends). The operation mode of the laser processing unit B during the processing for the first workpiece W is a standard mode, and the energy saving mode is not performed. For this reason, the standard mode is set after the processing of the first workpiece W and before the processing of the second workpiece W is started.

  Regarding the machining operation for the first workpiece W in the laser machining unit B, the start time T1, the end time T2, and the machining processing completion time T3 are stored in the database DB of the NC device 25. Based on each time stored in the database DB, the control unit S as a control means sets a waiting time from the time when the laser processing unit B that has not performed processing ends the previous processing to the time when the next processing starts. measure. Further, the database DB stores in advance a standard mode recovery time required to recover from the energy saving mode to the standard mode and an energy saving mode transition time required to shift from the standard mode to the energy saving mode.

  That is, the above-described control unit S includes a standby time measuring unit that measures a standby time from the time point when the machining unit not performing machining finishes the previous machining to the time when the next machining is started. Further, the database DB stores mode transition recovery time storage means for storing the energy saving mode transition time required for shifting from the standard mode to the energy saving mode and the standard mode recovery time required for recovering from the energy saving mode to the standard mode. Is configured.

  FIG. 3 is a time chart when the second workpiece W is processed by the combined punch / laser processing machine 1. The machining operation is the same as that of the first sheet shown in FIG. 2, but shows a state where the laser machining unit B is in the energy saving mode. As the change of the operation mode, the transition time (d1) to the energy saving mode is set immediately after the machining operation is started, and further, the time during which the laser machining is performed, that is, before and after the time from T1 to T2, The transition time (d1) to the energy saving mode and the recovery time (d2) to the standard mode are set.

  For this reason, since the standard mode is set after the processing of the first workpiece W is completed, a time (d1) is required immediately after the start of the processing operation for the second workpiece, and the mode is shifted to the energy saving mode. The energy saving mode is executed until -d2), and thereafter, the recovery time (d2) to the standard mode is reached until the start of laser processing (time T1). In addition, it takes time (d1) from the end of laser processing (time T2) to shift to the energy saving mode.

  Here, when the time (d1 + d2) obtained by adding the transition time (d1) and the recovery time (d2) exceeds the time during which laser processing is not performed such as punching (hereinafter referred to as laser processing rest time). Execute energy saving mode. When the second workpiece shown in FIG. 3 is processed, since the standard mode is set after the completion of the first workpiece, the time (d1 + d1 + d2) obtained by adding the transition time (d1) further performs the punch processing. The energy saving mode is executed when the time when machining is not performed is exceeded. The laser processing rest time in FIG. 3 is a time obtained by adding the time from the start of the processing operation to the time T1 and the time from the time T2 to the time T3 for completing the material unloading.

  Note that the energy-saving mode is appropriately changed according to the length of the laser processing break time to perform optimal control. For example, if the laser processing rest time is within 45 seconds considering the transition time and recovery time of the laser transmitter 19 and the temperature adjuster 27, the energy saving mode is not performed, and the laser processing break time is between 45 seconds and 50 seconds. Only the base discharge is stopped for the oscillator 19, and when it is 50 seconds or longer, the turbo blower is stopped simultaneously with the stop of the base discharge for the laser oscillator 19. Further, when the laser processing and the punching are frequently switched, the temperature controller 27 is not set in the energy saving mode to prevent the laser oscillator 19 from becoming unstable, and only the laser oscillator 19 is set in the energy saving mode. .

  FIG. 4 is a time chart when the third workpiece W is processed by the combined punch / laser processing machine 1. The machining operation is the same as that of the second sheet shown in FIG. 3, but shows a state where the laser machining unit B is in the energy saving mode. Compared with the second processing in FIG. 3, since the processing operation has already been started, the transition to the energy saving mode immediately after the start of the processing operation (d1) is not required. Only the point is different. As the change of the operation mode, before and after the time of laser processing, that is, the time between T1 and T2, the transition time to the energy saving mode (d1) and the recovery time to the standard mode (d2) Is set.

  For this reason, the energy saving mode is performed from the start of the machining operation to the time (T1-d2), and thereafter, the recovery time (d2) to the standard mode is reached until the laser machining starts (time T1). In addition, it takes time (d1) from the end of laser processing (time T2) to shift to the energy saving mode.

  The laser processing rest time in FIG. 4 is a time obtained by adding the time from the start of the processing operation to the time T1 and the time from the time T2 to the time T3 for completing the material unloading.

    FIG. 5 shows the power consumption when the energy saving mode is executed in this way (the third processing in FIG. 4) by a solid line, and shows the power consumption when the standard mode is maintained without implementing the energy saving mode. It is indicated by a one-dot chain line. Here, the part shown by the oblique line surrounded by the solid line and the alternate long and short dash line in the figure corresponds to the reduction in power consumption due to the execution of the energy saving mode.

  In FIG. 5, the standby power in the standard mode is 31.8 kW obtained by adding 15.8 kW of the laser oscillator 19 and 16 kW of the temperature controller 27, and the standby power in the energy saving mode is the laser power. It is 14.3 kW obtained by adding 3.3 kW of the oscillator 19 and 11 kW of the temperature controller 27. The power consumption during laser processing is 56 kW (laser oscillator 19 is 40 kW, temperature controller 27 is 16 kW).

  Next, the control operation of the control unit S in the NC device 25 will be described based on the flowcharts of FIGS. 2, FIG. 3 and FIG. 4 show the case where laser processing is performed once after punching for one workpiece, but in the following description, for one workpiece, An example in which laser processing is performed a plurality of times with punch processing in between is shown.

  In FIG. 6, it is determined whether or not the second and subsequent machining operations are to be performed on the workpiece W (step 501). Here, the second and subsequent sheets refer to whether or not the machining is continued after the first workpiece W is machined. When the second and subsequent processing is not executed, that is, when the processing ends with the first processing, the laser processing unit B does not shift to the energy saving mode and always starts the processing operation as the standard mode (step 503).

  FIG. 7 is a process executed during the machining of the first workpiece W. It is determined whether or not the machining program has been completed (step 601). If it has not been completed, it is determined whether or not laser machining has been started. Judgment is made (step 603). When the laser processing is started, the laser processing start time is stored in the database DB (step 605), and then it is determined whether the laser processing is completed (step 607). The start time is stored (step 609).

  If it is determined in step 601 that the machining program has been completed, the operation end time of the punch / laser combined machining machine 1 is stored in the database DB (step 611).

  Returning to FIG. 6, if it is determined in step 501 that the second and subsequent sheets are to be executed, it is determined whether or not the current energy saving mode is set (step 505). In the case of the energy saving mode, the standard mode is restored by the start of the first laser processing for one workpiece W (step 507). The restoration start time here is a time (T1-d2) that is back by the time d2 with respect to the first laser processing start time T1 for one workpiece W, as shown in FIGS.

  In FIG. 10, it takes time d2 to return to the standard mode when performing laser processing on the third workpiece W in the energy saving mode after processing on the second workpiece W. It shows that. Here, an example is shown in which laser processing is performed twice on one workpiece W, and punching is performed in an energy saving mode between two laser processing operations.

  If it is determined in step 505 that the current energy saving mode is not set, it is determined whether or not the first laser processing start time T1> (d1 + d2) is satisfied (step 506). Here, in the case of the first laser processing start time T1> (d1 + d2), there is a time to shift from the standard mode to the energy saving mode and to recover from the energy saving mode to the standard mode, so the energy saving mode is set immediately after the operation (step 508). ).

  Next, the process proceeds to a flowchart showing an algorithm for determining whether to shift to the energy saving mode after the Nth laser processing in FIG. 8 (step 509). In FIG. 8, N in step 701 is a counter indicating the number of times of laser processing, and whether or not “N <total number of laser processing times for one workpiece W”, that is, the last laser processing for one workpiece W. In step 703, it is determined whether or not the laser processing is performed before and after one time.

  Here, in the case of “N <total number of laser processing times”, the difference between the next (N + 1) th laser processing start time and the current (Nth) laser processing end time is the transition time d1 and the recovery time d2. Whether it is larger than the addition value, that is, “next (N + 1) th laser processing start time−current (Nth) laser processing end time (hereinafter, expressed as (N + 1) − (N))> (d1 + d2)”. It is determined whether or not there is (step 705).

  Here, in the case of [(N + 1) − (N)]> (d1 + d2), the current laser processing (standard mode) within the time from the end of the current laser processing to the next laser processing (laser processing rest time). It is possible to set the transition time d1 for shifting from the energy saving mode to the energy saving mode and the recovery time d2 for restoring from the energy saving mode to the next laser processing (standard mode). For this reason, after the Nth (current) laser processing is completed, the mode shifts to the energy saving mode (step 707).

  On the other hand, if [(N + 1) − (N)]> (d1 + d2) is not satisfied, the transition time d1 and the recovery time d2 cannot be set within the laser processing rest time, and therefore the transition to the energy saving mode is not performed (step 709).

  Thereafter, the “N + 1” -th laser processing is executed (step 711), the process returns to step 703, and if “N <total number of laser processing times” is not satisfied in step 703, that is, if it is the last laser processing, the processing ends. .

  After the algorithm of FIG. 8, returning to FIG. 6, [(the machining time of the entire program for one workpiece W−the last laser machining end time for one workpiece W) + the first of the workpieces W to be machined next It is determined whether or not the laser processing time]> (d1 + d2) is satisfied (step 511). Here, [(the machining time of the entire program for one workpiece W−the last laser machining end time for one workpiece W) + the first laser machining time of the workpiece W to be machined next >> (d1 + d2) For example, the mode shifts to the energy saving mode after the last laser processing (step 513). Otherwise, the mode does not shift to the energy saving mode after the last laser processing (step 515).

  That is, in FIG. 10, the processing time of the entire program for the first (second) workpiece W is TA, the last laser processing end time for the first (second) workpiece W is TB, and then the next processing. If the first laser processing start time of the workpiece (third sheet) to be performed is T1, (TA−TB) + T1 = TC. If this TC is larger than (d1 + d2) (if the time is long), there is a time to shift to the energy saving mode. Therefore, in step 513, the mode shifts to the energy saving mode after the last laser processing.

  After shifting to the energy saving mode in step 513, it is determined whether or not the initial laser processing start time T1 is shorter than the recovery time d2 for restoring to the standard mode, that is, whether T1 <d2 (step 517), and T1 <d2. If there is, the mode is restored from the energy saving mode to the standard mode (step 519). Conversely, if T1 <d2 is not satisfied (T1 ≧ d2), the energy saving mode is maintained and the standard mode is not restored (step 521).

  FIG. 11 is similar to FIG. 10 described above, and is restored to the standard mode when performing laser processing on the third workpiece W in a state where the energy saving mode is set after processing on the second workpiece W. Indicates that time d2 is required. In this case, since the recovery time d2 is longer than the laser processing start time T1 in the processing program for the third workpiece W, the energy saving mode is set at the time TD before the end of the processing program for the previous (second) workpiece W. Recovery has started from standard mode.

  FIG. 9 shows processing executed during processing of the second and subsequent workpieces W, and M in step 801 is a counter indicating how many times laser processing is executed. First, it is determined whether or not the machining program has ended (step 803). If it has not ended, it is determined whether or not it is time to restore the energy saving mode to the standard mode (step 805). Here, if it is time to restore the standard mode, the standard mode is restored (step 807).

  Thereafter, it is determined whether or not laser processing is started (step 809), and if it is started, the laser processing start time is stored in the database DB (step 811). If it is determined whether or not the subsequent laser processing is completed (step 813), if it is completed, the laser processing end start time is stored in the database DB (step 815).

  Next, after the M-th laser processing, it is determined whether or not the energy saving mode should be set (step 817). If the energy saving mode should be set, the energy saving mode is set (step 819). If it is determined in step 803 that the processing program has been completed, the operation end time of the punch / laser composite processing machine 1 is stored in the database DB (step 821).

  As described above, according to the present embodiment, in the punch / laser composite processing machine 1, when the material is carried in and punching is performed and laser processing is not performed, the laser not performing the laser processing is performed. The processing unit B is made to stand by in an energy saving mode in which the energy consumption at the time of standby is less than the standard mode at the time of normal standby. For this reason, the energy consumption at the time of the standby of the laser processing part B which is not processing can be reduced.

  Further, in this embodiment, the standby time from the time when the laser processing part B that has not performed the processing finishes the previous processing to the time when the next processing is started is the standard required to restore the energy saving mode to the standard mode. When the mode recovery time and the energy saving mode transition time necessary for shifting from the standard mode to the energy saving mode are longer than the sum of the times, the laser processing part B that is not performing processing is made to stand by as the energy saving mode. ing.

  Thereby, when the laser processing part B should be made into an energy saving mode, it can set to an energy saving mode reliably, and reduction of power consumption can be performed efficiently.

  FIG. 12 is a time chart corresponding to FIG. 4 showing an embodiment in which the punched portion A is in the energy saving mode. Here, the punching is performed during the time T1 to T2 in the processing operation, and when the material is not carried out, when the laser processing is performed, and when the material is carried out, the punching unit A The energy saving mode.

  The energy saving mode at the time of carrying in the material is set to a time “T1-d2” obtained by subtracting the restoration time d2 from the time T1 when punching is started to the standard mode.

  As the energy saving mode in the punching section A, for example, the following matters are executed. Turn off the servo amplifier of the electric servo press. Turn off the blower motor and amplifier of the hydraulic press. Turn off the servo amplifier that rotates the turret or mold. Stop the blower motor of the mechanism that raises the die hydraulically. Stop the motor and amplifier of the belt conveyor that carries punch punches.

  Even in the energy saving mode in the punching section A, the punching start time and the end time are stored, and the section in which the second and subsequent punching is not performed is set to the energy saving mode described above, so that The standby power of the processing unit A can be reduced.

  The start time and end time of laser processing or punch processing for executing the energy saving mode can be substituted by storing in the header of the processing program instead of the database DB.

1 Punch / Laser combined processing machine
A Punch processing part (processing means)
B Laser processing part (processing means)
S control unit (control means, standby time measuring means)
DB database (mode recovery transition time storage means)

Claims (4)

Operation of a multi-tasking machine having a plurality of different types of processing means,
The operating mode of the at least one processing means among the plurality of processing means, the processing machining rest time is not performed of the machining operation, and the standard mode of consumption energy during normal standby, than the standard mode In the operation method of the multi-tasking machine controlled by the control means to switch to the energy saving mode that consumes less energy,
When performing machining operations based on the same program for each of multiple workpieces,
The machining operation for one sheet of the workpiece, while performing the operation mode as the standard mode, the processing start time of the one of the processing means in the processing operation was performed, the processing end time, and the program ends A machining time storage step for storing machining processing completion time ;
Based on the stored machining start time , machining end time , and machining processing completion time , the operation mode of the one machining means in the machining operation of the second and subsequent workpieces is changed to the energy saving in the machining rest time. A transition determination step for determining whether or not to shift to a mode;
Of multi-tasking machine including The transition determination step includes
Based on the machining start time , the machining end time , and the machining processing completion time stored in the machining time storage step, a standby from the time when the last machining of the one machining means is completed to the time when the next machining is started. Including a waiting time acquisition step of acquiring time;
The acquired standby time is obtained by adding the standard mode recovery time necessary for recovering from the energy saving mode to the standard mode and the energy saving mode transition time required for shifting from the standard mode to the energy saving mode. If longer than time,
2. The method of operating a multi-tasking machine according to claim 1, wherein, in the standby time, the one processing means is shifted to the energy saving mode. A multi-tasking machine operating device having a plurality of different types of processing means,
At least the operating mode of one machining unit, consumed in machining off time not implemented the processing of the machining operation, and energy consumption is normal standard mode, less than the standard mode of the plurality of processing means Control means to switch between energy saving mode to become energy,
The control means includes
When performing machining operations based on the same program for each of multiple workpieces,
The machining operation for one sheet of the workpiece, while performing the operation mode as the standard mode, the processing start time of the one of the processing means in the processing operation was performed, the processing end time, and the program ends based on the processing completion time, the operation mode of the processing means of the one in the machining operation of the workpiece after the second sheet, to determine whether or not to shift to the power saving mode in the processing break time A multi-task machine operating device. The control means includes
Based on the processing start time , the processing end time , and the processing processing completion time , obtain a waiting time from the time when the previous processing of the one processing means is completed to the time when the next processing is started,
The acquired standby time is a time obtained by adding a standard mode recovery time required for recovering from the energy saving mode to the standard mode and an energy saving mode transition time required for shifting from the standard mode to the energy saving mode. If longer,
The operating device for a multi-tasking machine according to claim 3, wherein the one processing means is shifted to the energy saving mode during the waiting time.

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