JP6651841B2 - Relocation restriction device, machine tool, relocation restriction method, and computer program - Google Patents

Description

  The present invention relates to a transfer restriction device, a machine tool, a transfer restriction method, and a computer program for prohibiting the operation of an operation target when the transfer of the operation target is detected.

  A conventional machine tool permits operation for a predetermined time after a relocation is detected, and prohibits operation after a predetermined time has elapsed (see Patent Document 1). Since the driving is permitted for a predetermined time, the convenience for the operator is improved.

JP 2009-205545 A

  However, after the relocation is detected, the machine tool can be operated unconditionally until a predetermined time elapses, and the restriction on the relocation may not be sufficient.

  The present invention has been made in view of such circumstances, and has as its object to provide a transfer restriction device, a machine tool, a transfer restriction method, and a computer program which ensure the convenience of an operator and have sufficient restrictions on the transfer. And

  The relocation restriction device according to the present invention is a relocation restriction device that prohibits the operation of the driving object when the relocation detection unit that detects the relocation of the driving object detects the relocation of the driving object. A power detection unit that detects an on state or an off state of the power of the power supply, and after the relocation detection unit detects the relocation of the operation target when the power detection unit detects the off state of the power supply, A prohibition unit for prohibiting the operation of the operation target when the power supply detection unit detects the on state of the power supply; and a relocation detection unit when the power supply detection unit detects the off state of the power supply. After detecting the relocation of the driving object, a timer that starts measuring a predetermined time, a determining unit that determines whether a predetermined operation has been performed within the predetermined time, Determines that has performed the above operation When, characterized in that it comprises a releasing portion for releasing the prohibition of the operation of the operation object to the predetermined time has elapsed.

  In the relocation restriction device according to the present invention, the timer starts measuring the predetermined time when the power is turned on from an off state after the relocation detection unit detects the relocation of the operating object. It is characterized by doing.

  In the relocation restriction device according to the present invention, the timer measures the predetermined time when the power detection unit detects the power-off state and the relocation detection unit detects the relocation of the operation target. Is immediately started.

  The relocation restriction device according to the present invention is configured such that when the power supply detection unit detects the power-on state, the relocation detection unit detects the relocation of the operation target, and the relocation detection unit detects It is characterized by ignoring the result.

  The machine tool according to the present invention is characterized in that the object to be operated is a machine tool main body including a spindle, and includes the machine tool main body and any one of the transfer restriction devices described above.

  The relocation restriction method according to the present invention, in the case where the relocation of the operation target is detected, in the relocation restriction method for prohibiting the operation of the operation target, detecting an ON state or an OFF state of a power supply of the operation target, After detecting the relocation of the operation target when detecting the off state of the power supply, when detecting the on state of the power supply, the operation of the operation target is prohibited, and the off state of the power supply is detected. After detecting the relocation of the driving object when the operation is started, timing of a predetermined time is started, it is determined whether or not a predetermined operation is performed within the predetermined time, and it is determined that the operation is performed. In this case, the prohibition of the driving of the driving object is released until the predetermined time elapses.

  The computer program according to the present invention is a computer program that can be executed by a transfer restriction device that prohibits operation of the operation target when the transfer detection unit that detects the transfer of the operation target detects the transfer of the operation target. The transfer restriction device, after detecting the ON state or OFF state of the power supply of the operation target, after the transfer detection unit detects the transfer of the operation target when detecting the OFF state of the power supply, When detecting the on state of the power supply by the power supply detection unit, prohibits the operation of the operation target, detects the relocation of the operation target while detecting the off state of the power supply, Start timing of a predetermined time, determine whether or not a predetermined operation has been performed within the predetermined time, and when it is determined that the operation has been performed, prohibition of driving of the driving object is determined. Characterized in that to perform the function of releasing until a constant time elapses.

  In the present invention, when the power is turned on after the detection of the relocation of the operation target, the operation of the operation target is prohibited. After the relocation is detected, timing of a predetermined operable time is started, and only when a predetermined operation is performed, the operation of the operation target is permitted only for the predetermined time.

  In the present invention, when the power is turned on from the off state, the clocking of the predetermined time is started, so that the operable time is not shortened too much.

  In the present invention, since the time is started immediately after the power is turned off and the relocation of the operation target is detected, it is possible to temporarily reduce the operable time and to strengthen the relocation restriction.

  In the present invention, erroneous detection of relocation due to disturbance such as vibration generated during operation is prevented.

  The transfer restriction device, the machine tool, the transfer restriction method, and the computer program according to the present invention prohibit the operation of the operation target when the power is turned on after the detection of the transfer of the operation target. After the relocation is detected, a predetermined time during which operation is possible is started, and only when a predetermined operation is performed, the operation of the operation target is permitted only for the predetermined time, so that the convenience of the operator is secured, In addition, it is possible to set a sufficient limit for relocation.

FIG. 2 is a perspective view schematically showing a machine tool. FIG. 2 is a block diagram schematically illustrating a configuration of a machine tool. It is a flowchart explaining a transfer restriction process by a control apparatus. It is a flowchart explaining temporary release processing by a control apparatus. It is a flowchart explaining this cancellation | release process by a control apparatus. FIG. 2 is a block diagram schematically illustrating a machine tool with a partially modified configuration.

  Hereinafter, the present invention will be described with reference to the drawings showing a machine tool 100 according to an embodiment. FIG. 1 is a perspective view schematically showing a machine tool. The machine tool 100 includes a base 1, a machine body 2 (operating object, see FIG. 2), a machine cover 3, an operation unit 4, and a control device 10. The base 1 supports the machine body 2. The machine cover 3 covers the machine body 2. The control device 10 is connected to the machine body 2. The operation unit 4 includes a display unit 4a, switches, buttons, a touch panel, and the like, and receives an operation by an operator.

  FIG. 2 is a block diagram schematically illustrating the configuration of the machine tool 100. The machine main body 2 includes a spindle drive mechanism 2a and a work holder drive mechanism 2b. The spindle drive mechanism 2a executes the rotation of the spindle on which the tool is mounted, and the vertical, horizontal, and front and rear movements of the spindle. The work holder driving mechanism 2b rotates the work holder that holds the work.

  The control device 10 includes a CPU 11, a ROM 12, a RAM 13, a nonvolatile memory 14, a timer 15, an input / output interface (input / output I / F) 16, and the like. The CPU 11 reads the control program stored in the ROM 12 into the RAM 13 and controls the spindle drive mechanism 2a, the work holding section drive mechanism 2b, and the like. The nonvolatile memory 14 is, for example, an EEPROM, an EPROM, a flash memory, or the like. A hard disk may be used instead of the nonvolatile memory 14.

  The non-volatile memory 14 stores a grace period (predetermined time) during which operation is possible, information indicating a temporary release operation (predetermined operation), the number of times of temporary release, and information indicating a final release operation. The initial value of the number of times of temporary release is 0. The grace time, the information indicating the temporary release operation, the number of times of temporary release, and the information indicating the final release operation may be stored in the ROM 12.

  An operation signal is input from the operation unit 4 to the control device 10 via the input / output I / F 16. Through the input / output I / F 16, a drive / stop signal is output from the control device 10 to the spindle drive mechanism 2a, the work holding section drive mechanism 2b, and the like.

  The machine tool 100 includes a power supply 5, a power switch 6, and a transfer detection device 20. The power switch 6 switches on / off of the power supply 5. The relocation detection device 20 includes a battery 27, a CPU 21, a ROM 22, a RAM 23, a non-volatile memory 24, a vibration sensor 25, an input / output interface (input / output I / F) 26, and the like. The CPU 21 reads out the control program stored in the ROM 22 to the RAM 23 and executes a process of detecting the relocation of the machine tool 100. The nonvolatile memory 24 is, for example, an EEPROM, an EPROM, a flash memory, or the like. A hard disk may be used instead of the nonvolatile memory 24.

  The power switch 6 inputs a signal indicating whether the power supply 5 is on or off to the transfer detection device 20 via the input / output I / F 26. The vibration sensor 25 detects the magnitude of vibration of the machine tool 100. When the vibration value detected by the vibration sensor 25 exceeds a preset threshold value, the CPU 21 outputs an excess signal to the control device 10, and the time and the information indicating ON or OFF of the power supply 5 and the vibration value indicate the threshold value. The information indicating the excess is stored in the nonvolatile memory 24 in association with the information. Since the relocation detection device 20 has the battery 27, the above process can be executed even when the power supply 5 is off.

  The control device 10 and the relocation detection device 20 constitute a relocation restriction device. The control device 10 forms a prohibition unit, a determination unit, and a release unit. The relocation detection device 20 forms a relocation detection unit and a power supply detection unit.

  FIG. 3 is a flowchart illustrating a transfer restriction process performed by the control device 10. The control device 10 executes the transfer restriction process when the power supply 5 is switched from off to on. When the power supply 5 is turned on, the CPU 11 of the control device 10 determines whether or not an excess signal has been input from the relocation detection device 20 (step S1).

  When there is no input of the excess signal (step S1: NO), the CPU 11 determines whether an abnormality has occurred in the relocation detection device 20 (step S2). If no abnormality has occurred in the relocation detection device 20 (step S2: NO), the CPU 11 ends the process. If an abnormality has occurred in the relocation detection device 20 (step S2: YES), the CPU 11 outputs a signal indicating a warning to the display unit 4a (step S4). The display unit 4a displays the operation prohibition. The CPU 11 executes the processing of step S5 and thereafter, which will be described later.

  When an excess signal is input (step S1: YES), the CPU 11 refers to the non-volatile memory 24 of the relocation detection device 20, and displays information indicating that the power supply 5 is turned off and information indicating that the vibration value has exceeded the threshold. It is determined whether or not they are stored in association with each other, that is, whether or not the vibration value exceeds the threshold value while the power is off (step S3). When the vibration value does not exceed the threshold value while the power is off (step S3: NO), that is, when the vibration value exceeds the threshold value while the power is on (the non-volatile memory 24 stores information indicating that the power supply 5 is on and the vibration If information indicating that the value has exceeded the threshold value is stored in association with the value), or if the vibration value does not exceed the threshold value while the power is on or off, the CPU 11 ends the process.

  When the power supply 5 is turned on, the main shaft and the work holding unit move to process the work. The vibration sensor 25 detects the vibration generated by processing the work. In this case, even if the detected vibration exceeds the threshold, the CPU 11 does not execute the processing of step S4 and subsequent steps. This is to prevent erroneous detection of relocation of the machine tool 100 due to vibration generated during processing.

  When the vibration value exceeds the threshold value while the power is off (step S3: YES), the CPU 11 outputs a signal for displaying a warning to the display unit 4a (step S4). The CPU 11 sets the grace time stored in the nonvolatile memory 14 in the timer 15 and starts counting down the grace time (step S5). The CPU 11 prohibits the operation of the machine body 2 (step S6). The CPU 11 ignores the drive signal of the spindle drive mechanism 2a or the work holder drive mechanism 2b from the operation unit 4.

  The CPU 11 determines whether a temporary release screen for temporarily releasing the prohibition of driving has been called by an operation of the operation unit 4 (step S7). When the temporary release screen is called (step S7: YES), the CPU 11 executes a temporary release process (step S8), and returns the process to step S7. The operator operates a button, switch, touch panel, or the like on the operation unit 4 to input a signal for calling a temporary release screen.

  If there is no call for the temporary release screen (step S7: NO), the CPU 11 determines whether or not there has been a call for the final release screen for completely canceling the driving prohibition (step S9). If there is no call of the main release screen (step S9: NO), the CPU 11 returns the process to step S7.

  When the final release screen is called (step S9: YES), the CPU 11 executes the final release processing (step S10), and ends the transfer restriction processing. The operator does not know the operation for calling the main cancellation screen. The manufacturer of the machine tool 100 that has received the communication from the operator can operate the buttons, the switches, the touch panel, or the like on the operation unit 4 to input a signal for calling the main release screen.

  In step S5, the timer counts down until the grace time elapses, but may count up.

  FIG. 4 is a flowchart illustrating the temporary release processing by the control device 10. When the temporary release screen is called (step S7: YES), the CPU 11 displays the temporary release screen on the display unit 4a (step S11). The temporary release screen shows, for example, a format for inputting information related to the temporary release operation. The CPU 11 determines whether an operation has been performed (step S12). The operator can operate a button, a switch, a touch panel, or the like on the operation unit 4 to perform the operation. If there is no operation (step S12: NO), the CPU 11 returns the process to step S11.

  If an operation has been performed (step S12: YES), the CPU 11 refers to the information indicating the temporary release operation stored in the nonvolatile memory 14 and determines whether or not the operation is a temporary release operation (step S13). . If the operation is not the temporary release operation (step S13: NO), the CPU 11 returns the process to step S11.

  If the operation is a temporary release operation (step S13: YES), the CPU 11 refers to the timer 15 and determines whether or not the grace time stored in the nonvolatile memory 14 has elapsed (step S14). If the grace time has elapsed (step S14: YES), the CPU 11 prohibits the operation (step S19) and returns the processing.

  If the grace time has not elapsed (step S14: NO), the CPU 11 refers to the non-volatile memory 14 and determines whether the number of times of temporary release is less than 1 (step S15). If the number of times of temporary release is not less than 1 (step S15: NO), that is, if the number of times of temporary release is 1 or more, the CPU 11 prohibits operation (step S19) and returns the process.

  When the number of times of temporary release is less than 1 (step S15: YES), that is, when the number of times of temporary release is 0, the CPU 11 sets the number of times of temporary release to 1 in the nonvolatile memory 14 (step S16), and starts operation. The prohibition is released (step S17). The CPU 11 refers to the timer 15 and determines whether the grace time has elapsed (step S18).

  If the grace time has not elapsed (step S18: NO), the CPU 11 determines whether or not a signal for calling the final release screen for completely releasing the driving prohibition has been input (step S20). If there is no input of a signal for calling the main release screen (step S20: NO), the process returns to step S18.

  When the final release screen is called (step S20: YES), the CPU 11 executes the final release processing (step S10). If the grace time has elapsed (step S18: YES), the CPU 11 prohibits the operation (step S19) and returns the processing.

  FIG. 5 is a flowchart illustrating the main release process performed by the control device 10. When the final release screen is called (step S9: YES, step S20: YES), the CPU 11 displays the final release screen on the display unit 4a (step S21). The final release screen shows, for example, a format for inputting information related to the final release operation. The CPU 11 determines whether an operation has been performed (step S22). The manufacturer of the machine tool 100 can operate a button, a switch, a touch panel, or the like on the operation unit 4 to perform the operation. If there is no operation (step S22: NO), the CPU 11 returns the process to step S21.

  When an operation has been performed (step S22: YES), the CPU 11 refers to the information indicating the main release operation stored in the nonvolatile memory 14 and determines whether or not the operation is the main release operation (step S23). . If the operation is not the final release operation (step S23: NO), the CPU 11 returns the process to step S21.

  When the operation is the final release operation (step S23: YES), the CPU 11 sets the number of temporary release to 0 in the nonvolatile memory 14 (step S24), releases the prohibition of driving (step S25), and returns the process. .

  In the embodiment, when the power supply 5 is turned on after the vibration value exceeds the threshold value while the power is off, that is, after the relocation of the machine tool 100 is detected, the operation of the machine tool 100 is prohibited. After the relocation is detected, the operation of the grace time is started, and only when the temporary release operation is performed, the operation of the machine tool 100 is permitted only for the grace time, so that the convenience of the operator is secured, and Sufficient restrictions on relocation can be set.

  In addition, since the timing of the grace time is started after the power supply 5 is turned on from the off state, the operable time is not excessively reduced, and the convenience of the operator is not excessively limited. Further, erroneous detection of relocation due to disturbance such as vibration generated during operation can be prevented.

  FIG. 6 is a block diagram schematically showing a machine tool with a partially modified configuration. Although the timer 15 is provided in the control device 10 in the above-described embodiment, a timer 27 may be provided in the transfer detection device 20 as shown in FIG.

  In this case, the grace time is stored in the nonvolatile memory 24 of the relocation detection device 20 in advance, and when the vibration value detected by the vibration sensor 25 exceeds the threshold while the power is off, the timer 27 of the relocation detection device 20 is used. To start timing the grace time. The relocation detection device 20 executes the process of step S5 instead of the control device 10. In steps S14 and S18, the CPU 11 of the control device 10 refers to the timer 27 of the relocation detection device 20. When the relocation is detected while the power is off, the time measurement is started immediately, so that the operable time can be temporarily reduced and the relocation restriction can be strengthened.

  The embodiment disclosed this time is an example in all respects, and should be considered as not being restrictive. The technical features described in the embodiments can be combined with each other, and the scope of the present invention is intended to include all the modifications within the scope of the claims and the scope equivalent to the scope of the claims. Is done.

2 Machine body (machine tool body)
10 control device (relocation restriction device, prohibition unit, judgment unit, release unit)
11 CPU
12 ROM
13 RAM
15 Timer 20 Relocation detection device (relocation restriction device, relocation detection unit, power supply detection unit)
27 Timer 100 Machine tool

Claims (8)

When the relocation detection unit that detects the relocation of the operation target detects the relocation of the operation target, the relocation restriction device that prohibits the operation of the operation target.
A power supply detection unit that detects an ON state or an OFF state of a power supply of the driving object,
When the relocation detection unit detects the relocation of the operation target when the power supply detection unit detects the off state of the power supply, and when the power supply detection unit detects the on state of the power supply, A prohibition unit for prohibiting driving of the driving object,
While detecting the power supply OFF state in the power supply detection unit, after the relocation detection unit detects the relocation of the operation target, a timer that starts timing a predetermined time,
A determining unit that determines whether a predetermined operation has been performed within the predetermined time,
When the determination unit determines that the operation has been performed, a release unit that releases the prohibition of driving of the driving object until the predetermined time has elapsed , and
The timer after detecting relocation of the operation object at the relocation detection unit, when the power supply is turned from the off state to the on state, relocation characterized that you start counting the predetermined time limit apparatus. When the relocation detection unit that detects the relocation of the operation target detects the relocation of the operation target, the relocation restriction device that prohibits the operation of the operation target.
A power supply detection unit that detects an ON state or an OFF state of a power supply of the driving object,
When the relocation detection unit detects the relocation of the operation target when the power supply detection unit detects the off state of the power supply, and when the power supply detection unit detects the on state of the power supply, A prohibition unit for prohibiting driving of the driving object,
While detecting the power supply OFF state in the power supply detection unit, after the relocation detection unit detects the relocation of the operation target, a timer that starts timing a predetermined time,
A determining unit that determines whether a predetermined operation has been performed within the predetermined time,
When the determination unit determines that the operation has been performed, a release unit that releases the prohibition of driving of the driving object until the predetermined time has elapsed.
With
The timer immediately starts measuring the predetermined time when the power supply detecting unit detects the off state of the power supply and the relocation detecting unit detects the relocation of the operation target. Relocation restriction device. When the relocation detection unit detects the relocation of the operation target while the power supply detection unit detects the ON state of the power supply, the detection result of the relocation detection unit is ignored. relocation limiting device according to claim 1 or 2. The operation target is a machine tool body including a spindle,
The machine tool body,
A machine tool comprising: the transfer restriction device according to any one of claims 1 to 3 . When the relocation of the driving object is detected, in the relocation restriction method for prohibiting the driving of the driving object,
Detecting the ON state or OFF state of the power supply of the driving object,
After detecting the relocation of the operation target when detecting the off state of the power supply, when detecting the on state of the power supply, prohibits the operation of the operation target,
After detecting the relocation of the operation target while detecting the off state of the power supply, start timing a predetermined time,
Determine whether a predetermined operation has been performed within the predetermined time,
If it is determined that the operation has been performed, the prohibition of driving of the driving object is released until the predetermined time has elapsed ,
The method according to claim 1, further comprising: starting the time measurement of the predetermined time when the power supply changes from an off state to an on state after detecting the relocation of the operation target . When the relocation of the driving object is detected, in the relocation restriction method for prohibiting the driving of the driving object,
Detecting the ON state or OFF state of the power supply of the driving object,
After detecting the relocation of the operation target when detecting the off state of the power supply, when detecting the on state of the power supply, prohibits the operation of the operation target,
After detecting the relocation of the operation target while detecting the off state of the power supply, start timing a predetermined time,
Determine whether a predetermined operation has been performed within the predetermined time,
If it is determined that the operation has been performed, the prohibition of driving of the driving object is released until the predetermined time has elapsed,
When the power-off state is detected and the relocation of the operation target is detected, the timing of the predetermined time is started immediately.
A transfer restriction method characterized by the following. When the relocation detection unit that detects the relocation of the operation target detects the relocation of the operation target, in a computer program that can be executed by the relocation restriction device that prohibits the operation of the operation target,
The transfer restriction device,
Detecting the ON state or OFF state of the power supply of the driving object,
After the relocation detection unit detects the relocation of the operation object when it is detected in the off state of the power source, when detecting the on state before SL power, prohibits the operation of the operation object,
While detecting the off state of the power supply, after detecting the relocation of the driving object, start timing a predetermined time,
Determine whether a predetermined operation has been performed within the predetermined time,
If it is determined that the operation has been performed, the prohibition of driving of the driving object is released until the predetermined time has elapsed ,
A computer program for executing a function of starting timing of the predetermined time when the power is turned on from an off state after the relocation detection unit detects the relocation of the operation target . When the relocation detection unit that detects the relocation of the operation target detects the relocation of the operation target, in a computer program that can be executed by the relocation restriction device that prohibits the operation of the operation target,
The transfer restriction device,
Detecting the ON state or OFF state of the power supply of the driving object,
After detecting the relocation of the operation target while the relocation detection unit is detecting the off state of the power supply, when detecting the on state of the power supply, prohibits the operation of the operation target,
While detecting the off state of the power supply, after detecting the relocation of the driving object, start timing a predetermined time,
Determine whether a predetermined operation has been performed within the predetermined time,
If it is determined that the operation has been performed, the prohibition of driving of the driving object is released until the predetermined time has elapsed,
A function of immediately starting timing of the predetermined time when detecting the off state of the power supply and detecting the relocation of the operation target by the relocation detection unit.
A computer program characterized by executing the following.

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