JP2018055628A - Transfer detection system and control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a transfer detection system capable of previously avoiding battery exhaustion of transfer detection means and a control method.SOLUTION: A transfer detection system includes a machine tool and a transfer detection device. The transfer detection device is capable of detecting transfer of the machine tool. The transfer detection device includes an installation part in which a battery is installed. When a power switch of the machine tool is off, the battery supplies a power to the transfer detection device. A CPU of a transfer detection system determines whether or not the battery is in a replacement state as one example of a state in which battery replacement is required (S22). The battery turns into the replacement state, for example, after passage of one year since the battery was installed in the installation part. Upon determination that the battery is in the replacement state (S22: YES), the CPU executes alarm display (S25), and determines whether or not the battery has been replaced (S28). Until determination that the battery has been replaced (S28: NO), the CPU continues the alarm display (S25).SELECTED DRAWING: Figure 6

Description

  The present invention relates to a relocation detection system and a control method.

  The relocation detection system disclosed in Patent Document 1 includes a numerical control device and a relocation detection device. The numerical control device controls the operation of the machine tool. The relocation detection device detects relocation by vibration generated when the machine tool is relocated. When the relocation detection device detects the relocation of the machine tool, the numerical control device restricts the operation of the machine tool. The numerical control device limits the operation of the machine tool even when the battery of the relocation detection device runs out. When the numerical control device restricts the operation of the machine tool, the user needs to request the machine tool manufacturer to release the operation restriction.

Japanese Patent No. 5397270

  When the battery voltage of the relocation detection device decreases, the numerical control device displays a voltage warning screen on the display unit of the operation panel. The operator replaces the battery of the transfer detection device and operates the operation unit of the operation panel. The relocation detection device finishes displaying the voltage warning screen. The relocation detection system avoids the battery of the relocation detection device running out in advance. However, there is a possibility that the operator operates the operation unit without replacing the battery after the voltage warning screen is displayed by the numerical control device. There is a possibility that the battery of the numerical control device runs out and the numerical control device restricts the operation of the machine tool.

  An object of the present invention is to provide a relocation detection system and a control method capable of avoiding battery relocation of the relocation detection means in advance.

  The relocation detection system according to the first aspect of the present invention has a mounting portion to which a battery can be mounted, and based on output information of the relocation detection means, relocation detection means capable of detecting relocation of the machine by the power of the battery, A relocation determining means for determining relocation of the machine, a battery depletion determining means for determining a battery depletion of the battery mounted on the mounting portion, and a case where the relocation determining means determines that the machine has been relocated, or the battery In the transfer detection system comprising: a limiting unit that limits the operation of the machine when the outage determining unit determines that the battery has run out; and a release unit that releases the restriction of the operation by the limiting unit. State determination means for determining whether or not the battery attached to the battery is in a specific state in which it is time to replace, and the state determination means, When it is determined that the battery is in the specific state, an informing means for informing the specific state of the battery, and when the informing means notifies the specific state of the battery, the battery attached to the attachment portion is replaced. Replacement determining means for determining whether or not the battery has been replaced, and the notification means notifies the specific state until the replacement determination means determines that the battery has been replaced. According to the said structure, when a battery will be in a specific state, an alerting | reporting means alert | reports the specific state of a battery. The worker who recognizes the specific state of the battery performs battery replacement work. The notification unit notifies the specific state of the battery until the replacement determination unit determines that the battery has been replaced. Therefore, before the battery is switched from the specific state to the dead battery state, the operator can easily perform the battery replacement operation. Therefore, the relocation detection system can avoid the battery running out of the relocation detection means in advance.

  In the relocation detection system, the state determination unit determines that the battery is in the specific state when a specific time has elapsed since the mounting time, which is a time elapsed since the battery was mounted on the mounting unit. May be. The longer the mounting time, the more likely the battery will be in a specific state. Since the relocation detection system determines the state of the battery based on the installation time, it is easy to avoid running out of the battery in advance.

  In the relocation detection system, the pre-determining means for determining whether or not the pre-specified time, which is shorter than the specific time, has passed, and the pre-determining means includes the pre-determining means, A pre-notification means for notifying the elapse of the pre-specified time when it is determined that the pre-specified time has elapsed, and when the pre-notification means notifies the elapse of the pre-specified time, or the notification When the means notifies the specific state of the battery, the replacement determination means determines whether or not the battery has been replaced, and until the replacement determination means determines that the battery has been replaced, The notification means may notify the passage of the prior specific time. When the prior notification means notifies the passage of the specific time in advance, the worker can perform a battery replacement operation. The relocation detection system is more likely to avoid battery exhaustion in advance.

  The relocation detection system includes a voltage detection unit that detects a potential difference in the mounting unit, and when the potential difference detected by the voltage detection unit is less than a predetermined threshold, the state determination unit includes the battery You may determine with the said specific state. When the battery is in a specific state, the potential difference at the mounting portion where the battery is mounted becomes equal to or less than a predetermined value. Since the transfer detection system determines whether or not the battery is in a specific state based on the potential difference in the mounting portion, it is easy to avoid running out of the battery in advance.

  The relocation detection system includes a voltage detection unit that detects a potential difference in the mounting unit, and the replacement is performed when the potential difference detected by the voltage detection unit becomes equal to or greater than the threshold value after being less than a predetermined threshold value. The determination unit may determine that the battery has been replaced. When the battery is in a specific state, the notification unit notifies the specific state of the battery until the potential difference in the mounting portion becomes less than the threshold value or more than the threshold value. Therefore, the worker can surely execute the replacement work of the battery that has reached the specific state.

  According to a second aspect of the present invention, there is provided a control method of the relocation detection unit of the relocation detection unit including a relocation detection unit having a mounting unit to which a battery can be mounted and capable of detecting the relocation of the machine by the power of the battery. Based on the output information, a relocation determination step for determining relocation of the machine, a battery depletion determination step for determining battery depletion of the battery mounted on the mounting portion, and the relocation determination step determined that the machine has been relocated. Or when the battery exhaustion determination step determines that the battery has run out, the relocation detection comprising: a restriction step of restricting the operation of the machine; and a release step of releasing the restriction of the operation by the restriction step In the system control method, a state determination process for determining whether or not the battery mounted on the mounting unit is in a specific state in which a time to be replaced is reached. And when the state determination step determines that the battery is in the specific state, a notification step of notifying the specific state of the battery, and a case where the notification step notifies the specific state of the battery, A replacement determination step for determining whether or not the battery mounted on the mounting portion has been replaced, and the notification step notifies the specific state until the replacement determination step determines that the battery has been replaced. It is characterized by. The control method of the second aspect has the same effect as the relocation detection system of the first aspect.

The perspective view of the moving detection system 1. FIG. The perspective view of the control box 9. FIG. The block diagram which shows the electric constitution of the moving detection system 1. FIG. The flowchart of an operation | movement restriction | limiting process. The flowchart of a cancellation | release process. The flowchart of a battery test | inspection process. The figure of the display part 12 which displayed the warning notice screen 61 as a pop-up. The figure of the display part 12 which popup-displayed the replacement warning screen 62. FIG. The figure of the display part 12 which displayed the warning screen 63 as a pop-up.

  An embodiment of the present invention will be described. The configuration, processing, and the like of the system described below are merely illustrative examples, and are not intended to limit only to that unless otherwise specified. The drawings are used to explain technical features that can be adopted by the present invention. In the following description, left and right, front and rear, and top and bottom indicated by arrows in the figure are used.

  The configuration of the relocation detection system 1 will be described with reference to FIG. The relocation detection system 1 includes a machine tool 10, a numerical control device 20 (see FIG. 3), and a relocation detection device 30 (see FIG. 3). The machine tool 10 is a machine that performs processing such as cutting on a workpiece with a tool. The numerical controller 20 controls the operation of the machine tool 10 by executing an NC program. The NC program is composed of a plurality of blocks including various control commands, and controls various operations including axis movement of the machine tool 10, tool change, and the like in units of blocks. The relocation detection device 30 detects relocation of the machine tool 10 by detecting vibrations generated in the machine tool 10. The numerical control device 20 and the relocation detection device 30 can communicate with each other. When the relocation detection device 30 detects relocation of the machine tool 10, the numerical control device 20 restricts the operation of the machine tool 10. Since the user cannot use the machine tool 10, he requests the machine tool manufacturer to release the operation restriction. Based on a request from the user, the machine tool manufacturer distributes to the user a release key for releasing the operation restriction of the machine tool 10, and the user releases the operation restriction using the release key.

  The machine tool 10 includes a base 2 and a main body 6. The base 2 is installed on the floor. The main body 6 is a box-shaped body provided on the base 2. The main body 6 houses a table, a spindle head, a tool changer, a drive unit, and the like. The table is loaded with the workpiece. The table is movable in the X-axis direction (left-right direction) and the Y-axis direction (front-back direction). The spindle head is movable in the Z-axis direction (vertical direction) above the table. The spindle head supports the spindle rotatably. The main shaft extends in the vertical direction and is equipped with a tool. The spindle can rotate integrally with the tool. The tool changer can change a tool attached to the spindle. The drive unit includes an X motor, a Y motor, a Z motor, a spindle motor, and a magazine motor. The X motor and Y motor move the table. The Z motor moves the spindle head. The spindle motor rotates the spindle. The magazine motor drives the tool changer. The machine tool 10 processes a workpiece with a tool by moving the rotating spindle and the table relative to each other.

  The front wall portion of the main body 6 includes an opening / closing door 7, a display unit 12, and an input unit 13. The open / close door 7 is slidably provided. The open / close door 7 opens and closes the inside of the main body 6 by sliding. The display unit 12 displays various information. The display unit 12 displays various screens such as a setting screen and an operation screen. The input unit 13 is below the display unit 12. The input unit 13 is, for example, a physical switch, button, touch panel, or the like. The input unit includes a power switch (not shown), a reset key (not shown), and the like.

  As shown in FIGS. 1 and 2, the rear wall portion of the main body 6 includes a control box 9. The control box 9 accommodates the numerical control device 20 (see FIG. 3) and the relocation detection device 30 (see FIG. 3). The left wall portion of the control box 9 includes a mounting portion 36 and a cover 17. The mounting portion 36 has a box shape that opens toward the left. An operator can attach the battery 34 (see FIG. 3) to the inside of the attachment portion 36. The battery 34 attached to the attachment unit 36 can supply power to the relocation detection device 30. The battery 34 is a plurality of dry batteries as an example. As an example, the number of dry batteries is four.

  The cover 17 includes a frame 15 and a plate-like body 16. The frame 15 is rectangular and plate-shaped. One end of the frame 15 is rotatably connected to the control box 9. The plate-like body 16 is fitted inside the frame body 15. The cover 17 rotates between an open position (see FIG. 2) and a closed position (not shown). The cover 17 in the open position opens the mounting portion 36. When the cover 17 is in the open position, the operator can replace the battery 34 attached to the attachment portion 36. The cover 17 in the closed position closes the mounting portion 36.

  With reference to FIG. 3, the electrical configuration of the numerical controller 20 will be described. The numerical controller 20 includes a CPU 21, a ROM 22, a RAM 23, a storage device 24, a timer 29, a machine I / F unit 25, an AC / DC converter 26, a relocation I / F unit 27, and the like. The CPU 21 comprehensively controls the operation of the numerical controller 20. The RAM 23 temporarily stores various information. The RAM 23 includes a storage area for storing a relocation detection flag. The relocation detection flag is “1” when the relocation detection device 30 detects relocation of the machine tool 10 or when the battery 34 described later runs out of battery. The relocation detection flag is “0” when the relocation detection device 30 does not detect relocation of the machine tool 10 and when the battery 34 has not run out of battery. The ROM 22 stores an operation restriction program, a release program, a battery inspection program, and the like. Processing based on each program will be described later. Each program may be stored in a nonvolatile storage device, EEPROM (registered trademark), HDD (hard disk drive), or the like as a computer-readable storage medium. The RAM 23 temporarily stores various information. The storage device 24 is nonvolatile and stores various information in addition to the NC program. In addition to the NC program input by the user via the input unit 13, the CPU 21 can also store the NC program and the like read by external input in the storage device 24. The timer 29 measures a mounting time which is a time elapsed after the battery 34 is mounted on the mounting unit 36.

  The machine I / F unit 25 is connected to the drive unit, the display unit 12, and the input unit 13 of the machine tool 10. The CPU 21 drives and controls the drive unit via the machine I / F unit 25 and controls the machining operation of the machine tool 10. The CPU 21 displays various types of information on the display unit 12 via the machine I / F unit 25. The CPU 21 receives various types of information input to the input unit 13 via the machine I / F unit 25. The AC / DC converter 26 is connected to an AC power supply 28 provided outside the relocation detection system 1 and converts AC power supplied from the AC power supply 28 into DC power. The AC / DC converter 26 is connected to an I / F unit 35 (to be described later) of the relocation detection device 30 in addition to the AC power supply 28.

  The electrical configuration of the relocation detection device 30 will be described. The relocation detection device 30 includes a CPU 31, a storage device 32, a vibration detector 33, a mounting unit 36, a voltage detection unit 37, an I / F unit 35, and the like. The CPU 31 comprehensively controls the operation of the relocation detection device 30. The storage device 32 is nonvolatile. The memory | storage device 32 memorize | stores the detection result of the vibration detector 33 with a flag etc., for example. The relocation detection device 30 detects relocation of the machine tool 10 using the vibration detector 33. The vibration detector 33 detects vibration generated in the machine tool 10. The method for detecting relocation may be other than the method for detecting vibration, and for example, a method for detecting acceleration, inclination, or the like may be employed. The mounting unit 36 is electrically connected to the voltage detection unit 37. The voltage detection unit 37 detects a potential difference in the mounting unit 36. Therefore, the voltage detector 37 can detect the voltage of the battery 34.

  The I / F unit 35 is connected to the relocation I / F unit 27 of the numerical controller 20 and the AC / DC converter 26, respectively. When the power switch of the input unit 13 of the machine tool 10 is on, the AC / DC converter 26 supplies a part of the power converted from alternating current to direct current to the I / F unit 35. In this case, the relocation detection device 30 operates with electric power supplied from the AC / DC converter 26. When the power switch of the input unit 13 is turned from on to off, the AC / DC converter 26 cuts off the power supply to the I / F unit 35. In this case, the relocation detection device 30 is operated by the power supplied from the battery 34.

  The operation of the relocation detection device 30 will be described. The CPU 31 of the relocation detection device 30 monitors at a predetermined cycle whether or not the vibration detector 33 has detected the vibration of the machine tool 10. For example, when a suspicious person tries to relocate the machine tool 10 from the factory, the machine tool 10 vibrates. The vibration detector 33 detects vibration generated in the machine tool 10. The CPU 31 stores the detection result of the vibration detector 33 in the storage device 32. Further, the CPU 31 acquires a detection voltage that is a potential difference detected by the voltage detection unit 37 at a predetermined period. When the CPU 31 receives a confirmation signal, which will be described later, from the numerical control device 20, the CPU 31 transmits information including various detection results based on the detection result of the vibration detector 33 and the acquired detection voltage to the numerical control device 20 as a response signal. The relocation detection device 30 performs the above operation by the power supplied from the AC / DC converter 26 or the power supplied from the battery 34.

  The replacement of the battery 34 will be described. The battery 34 deteriorates as power is supplied to the relocation detection device 30 and eventually runs out of battery. The battery exhaustion is a state of the battery 34 in which proper power supply to the relocation detection device 30 cannot be performed. Hereinafter, the detection voltage of the voltage detection unit 37 when the battery 34 that has supplied the appropriate power is switched to the battery exhaustion is referred to as a first threshold value. By moving the battery 34 before the battery 34 runs out of battery, the relocation detection system 1 allows the relocation detection system 1 to change the power of the machine tool 10 while the power switch of the machine tool 10 is off. Relocation can be detected reliably. The battery 34 enters a specific state that is a state to be replaced before the battery runs out. The battery 34 in the specific state can supply appropriate power to the relocation detection device 30.

  The specific state of this embodiment includes an exchange state and a LOW state. The exchange state is a state of the battery 34 when the mounting time has passed a specific time. The specific time is, for example, a time when a predetermined safety factor is secured with respect to the time until the battery 34 mounted on the mounting unit 36 in an unused state runs out of battery. The specific time is one year as an example. If the relocation detection system 1 operates in a normal environment, when the battery 34 is in the replacement state, the detection voltage of the voltage detection unit 37 is larger than the first threshold value. The LOW state is a state of the battery 34 when the detection voltage of the voltage detection unit 37 becomes equal to or lower than a second threshold that is a predetermined threshold higher than the first threshold. When the battery 34 is in the LOW state, the battery 34 is being switched to run out of battery. If the relocation detection system 1 continues to operate in a high or low temperature environment that deviates from the temperature range determined by the specifications, for example, the deterioration of the battery 34 is accelerated. As a result, the battery 34 is in the LOW state before the mounting time of the battery 34 has passed the specific time. Note that, when the battery 34 is changed in the normal environment, the detection voltage of the voltage detection unit 37 is equal to or higher than the second threshold value.

  The operation restriction process will be described with reference to FIG. When the power switch is turned on, the CPU 21 of the numerical controller 20 reads the operation restriction program from the ROM 22 and executes this processing. CPU21 transmits a confirmation signal with respect to the moving detection apparatus 30 (S1). The CPU 31 of the relocation detection device 30 acquires the detection result of the vibration detector 33 by referring to the flag information stored in the storage device 32 after receiving the confirmation signal. The CPU 31 that has received the confirmation signal further determines whether or not the battery 34 has run out of battery by determining whether or not the detection voltage of the voltage detection unit 37 is equal to or lower than the first threshold value. The CPU 21 returns the detection result of the vibration detector 33 and information indicating whether or not the battery has run out to the CPU 31 as a response signal (S1). The CPU 21 determines whether a response signal has been received (S2). Until the response signal is received (S2: NO), the CPU 21 returns to S2 and waits.

  When the response signal is received (S2: YES), the CPU 21 determines whether or not the relocation of the machine tool 10 is detected based on the received response signal (S3). When the received response signal includes information indicating the detection of the transfer of the machine tool 10, the CPU 21 determines that the transfer of the machine tool 10 has been detected (S3: YES), and restricts the operation of the machine tool 10 (S7). For example, the CPU 21 executes start / stop of the machine tool 10, stop of drive control of the drive unit of the machine tool 10, reception of various instructions input via the input unit 13, and the like (S 7). Therefore, when a suspicious person moves the machine tool 10 illegally, the machine tool 10 cannot operate. For example, the CPU 21 pops up a warning screen (not shown) on the display unit 12 (S7). Therefore, the user can recognize that the operation of the machine tool 10 has stopped because the transfer of the machine tool 10 has been detected. The CPU 21 sets the relocation detection flag stored in the RAM 23 to 1 (S8), and ends the operation restriction process.

  When determining that the relocation of the machine tool 10 has not been detected (S3: NO), the CPU 21 determines whether or not the battery 34 has run out based on the response signal from the CPU 31 (S4). If the response signal from the CPU 31 indicates that the battery has run out, the CPU 21 determines that the battery has run out (S4: YES), and the process proceeds to S7. When the response signal from the CPU 31 indicates that the battery has not run out, the CPU 21 determines that the battery has not run out (S4: NO), and permits the operation of the machine tool 10 (S5). Therefore, the user can use the machine tool 10 normally. After executing S5, the CPU 21 sets a transfer detection flag stored in the RAM 23 to 0 (S6), and ends the operation restriction process.

  The release process will be described with reference to FIG. When the CPU 21 restricts the operation of the machine tool 10 by the operation restriction process (see FIG. 4), the machine tool 10 stops its operation. The user cannot use the machine tool 10. The user requests the machine tool manufacturer to release the operation restriction. The machine tool manufacturer notifies the user of a release key necessary for the release operation. The release operation is performed, for example, by inputting a release key to the input unit 13 in a state where the operation of the machine tool 10 is limited. When the CPU 21 accepts the input of the release key, the CPU 21 reads the release program from the ROM 22 and executes this processing. The CPU 21 releases the operation restriction of the machine tool 10 (S11). The CPU 21 initializes the relocation detection flag stored in the RAM 23 to 0 (S12), and ends this process.

  The battery inspection process will be described with reference to FIGS. The battery inspection process is a process executed by the CPU 21 at a predetermined cycle when the transfer detection flag stored in the RAM 23 is “0” after the operation restriction process is executed. The predetermined period is 40 ms, for example. The CPU 21 reads a battery inspection program stored in the ROM 22 and executes a battery inspection process.

The CPU 21 determines whether or not the battery 34 is in a pre-exchange state (S21). The pre-replacement state is the state of the battery 34 that is about to be replaced. Specifically, the pre-replacement state is a state of the battery 34 in a case where the mounting time of the battery 34 has passed a pre-specific time that is shorter than the specific time and is less than the specific time. For example, the prior specific time is shorter than the specific time by one week. CPU21 acquires T which is the value which the timer 29 measured, and determines whether the following formula | equation (A) is materialized (S21).
T2 ≦ T <T1 (A)
In Formula (A), T1 is a specific time, and T2 is a prior specific time.

As shown in FIGS. 6 and 7, when the formula (A) is established, the CPU 21 determines that the battery 34 is in a pre-replacement state (S 21: YES), and controls the display unit 12 to notify the replacement of the battery 34. Is displayed (S24). In other words, the CPU 21 notifies that the pre-specified time has passed (S24). For example, the display unit 12 displays an alarm message “Relocation detection device battery periodic replacement notice” in the message field 40 (S24). Furthermore, the display unit 12 pops up a notice warning screen 61 over the manual condition setting screen 51 below the message field 40. The manual condition setting screen 51 is a screen for setting manual conditions for the drive unit of the machine tool 10. The notice warning screen 61 displays, for example, the following warnings (1) and (2).
(1) The cause of the pop-up display of the notice warning screen 61 is that the battery 34 has been replaced in advance.
(2) Battery 34 replacement procedure.
The operator can recognize the prior replacement state of the battery 34 and execute replacement of the battery 34. The CPU 21 moves the process to S28.

As shown in FIGS. 6 and 8, when the formula (A) is not established, the CPU 21 determines that the battery 34 is not in the pre-replacement state (S21: NO), and determines whether or not the battery 34 is in the replacement state. (S22). CPU21 acquires T which is the value which the timer 29 measured, and determines whether the following formula | equation (B) is materialized (S21).
T> T1 (B)
For example, when the power switch of the machine tool 10 is turned off for a long period of time, the expression (A) is not satisfied (S21: NO), and the expression (B) is satisfied. If Formula (B) is materialized, CPU21 will determine with the battery 34 being a replacement | exchange state (S22: YES), will control the display part 12, and will perform the warning display of replacement | exchange of the battery 34 (S25). In other words, the CPU 21 notifies the replacement state of the battery 34 (S25). For example, the display unit 12 displays an alarm message “replacement detection device battery periodic replacement” in the message column 40 (S24). Further, the display unit 12 pops up a replacement warning screen 62 over the manual condition setting screen 51. The replacement warning screen 62 displays the following warnings (1) and (2), for example.
(1) The cause of the pop-up display of the replacement warning screen 62 is that the battery 34 has been replaced.
(2) Battery 34 replacement procedure.
The operator can recognize the replacement state of the battery 34 and execute the replacement of the battery 34.

  The CPU 21 restricts the operation of the machine tool 10 (S26). For example, the CPU 21 executes a drive control stop of the drive unit of the machine tool 10 (S26). The CPU 21 moves the process to S28.

  As shown in FIG. 6 and FIG. 9, when the formula (B) is not established, the CPU 21 determines that the battery 34 is not in the exchange state (S22: NO), and determines whether or not the battery 34 is in the LOW state (S23). . For example, the CPU 21 transmits a confirmation signal to the CPU 31 (S23). CPU31 which received the confirmation signal acquires the detection voltage of the voltage detection part 37, and determines whether the acquired detection voltage is below a 2nd threshold value. The CPU 31 outputs a determination result based on the detected voltage to the CPU 21 as a response signal. When the detected voltage is higher than the second threshold, the CPU 21 that has received the response signal determines that the battery 34 is not in the LOW state (S23: NO), and ends the battery inspection process.

When the detected voltage is equal to or lower than the second threshold value, the CPU 21 determines that the battery 34 is in the LOW state (S23: YES), and controls the display unit 12 to execute a warning display indicating the voltage drop of the battery 34 (S27). ). In other words, the CPU 21 notifies the LOW state of the battery 34 (S27). For example, the display unit 12 displays in the message column 40 “Please replace the relocation detection device battery without turning off the power” (S27). Further, the display unit 12 pops up a warning screen 63 over the manual condition setting screen 51. The warning screen 63 displays, for example, the following warnings (1) and (2).
(1) The cause of the pop-up display of the warning screen 63 is that the battery 34 is in the LOW state.
(2) Battery 34 replacement procedure.
(3) If the battery 34 is replaced while the power switch of the machine tool 10 is off, the relocation detection system 1 may detect relocation.
The operator can recognize the LOW state of the battery 34 and perform replacement of the battery 34. The CPU 21 moves the process to S28.

  The CPU 21 determines whether or not the replacement of the battery 34 has been completed based on the detection voltage of the voltage detection unit 37 (S28). For example, the CPU 21 transmits a confirmation signal to the CPU 31 (S28). The CPU 31 that has received the confirmation signal acquires the detection voltage of the voltage detection unit 37. CPU31 determines whether the 2nd threshold value was exceeded after the acquired detection voltage became 0V. When the detection voltage does not become 0V, or when the second threshold value is not exceeded after the detection voltage becomes 0V, the CPU 31 returns information indicating that the condition is not satisfied to the CPU 21 as a response signal ( S28). CPU21 determines with the replacement | exchange of the battery 34 not being completed (S28: NO), and transfers a process to S21. When the CPU 21 continuously executes S24, S25, or S27, the display unit 12 continuously executes the warning display.

  For example, the operator rotates the cover 17 from the closed position to the open position and removes the battery 34 from the mounting portion 36. The detection voltage is maintained at 0 V until the new battery 34 is installed (S28: NO). In addition, when the worker erroneously attaches the deteriorated battery 34 to the attachment portion 36, the detected voltage does not become equal to or higher than the second threshold value after becoming 0V (S28: NO). The CPU 21 continuously executes the warning display (S24, S25, S27).

  When the operator completes the battery 34 properly, the detection voltage of the voltage detection unit 37 exceeds the second threshold after becoming 0V. The CPU 31 returns information indicating that the condition is satisfied as a response signal to the CPU 21 (S28). CPU21 determines with the replacement | exchange of the battery 34 having been completed (S28), and transfers a process to S29. The operator rotates the cover 17 from the open position to the closed position after mounting the battery 34.

  The CPU 21 executes a reset process (S29). For example, when the operator operates the reset key of the input unit 13, the CPU 21 receives the operation of the reset key and executes a reset process. The CPU 21 stops the warning display executed in S24, S25, or S27 and resets the timer 29 (S29). When executing S26, the CPU 21 releases the operation restriction (S29). The operator can start the machining operation of the machine tool 10 normally by operating the input unit 13 while viewing the display unit 12.

  In the above description, the relocation detection device 30 is an example of a relocation detection means of the present invention. The second threshold is an example of the predetermined threshold of the present invention. The CPU 21 that executes S3 is an example of the relocation determination means of the present invention. The CPU 21 that executes S4 is an example of a battery exhaustion determination unit of the present invention. The CPU 21 that executes S7 is an example of the limiting means of the present invention. CPU21 which performs S11 and S12 is an example of the cancellation | release means of this invention. CPU21 which performs S22 and S23 is an example of the state determination means of this invention. CPU21 which performs S25 and S27 is an example of the alerting | reporting means of this invention. The CPU 21 that executes S28 is an example of a replacement determination unit of the present invention. CPU21 which performs S21 is an example of the prior determination means of this invention. The CPU 21 that executes S24 is an example of the prior notification means of the present invention.

  CPU21 which performs S3 is an example of the transfer determination process of this invention. The CPU 21 that executes S4 is an example of a battery exhaustion determination step of the present invention. CPU21 which performs S7 is an example of the restriction | limiting process of this invention. CPU21 which performs S11 and S12 is an example of the cancellation | release process of this invention. CPU21 which performs S22 and S23 is an example of the state determination process of this invention. CPU21 which performs S25 and S27 is an example of the alerting | reporting process of this invention. CPU21 which performs S28 is an example of the exchange determination process of this invention. CPU21 which performs S21 is an example of the prior determination process of this invention. CPU21 which performs S24 is an example of the prior alerting | reporting process of this invention.

  As described above, when the battery 34 is in a specific state (S22: YES, S23: YES), the CPU 21 controls the display unit 12 to execute a warning display (S25, S27). Since the operator can recognize the specific state of the battery 34, the worker performs the replacement work of the battery 34. Until the replacement work of the battery 34 is completed (S28: NO), the CPU 21 shifts the process to S21 and notifies the specific state of the battery 34 (S25, S27). Therefore, the operator can easily perform the replacement work of the battery 34 before the battery 34 becomes in a state of running out of the battery. Therefore, the relocation detection system 1 can avoid the battery 34 running out of battery in advance.

  The longer the battery 34 is attached, the more easily the battery 34 enters a specific state. The CPU 21 determines whether or not the battery 34 is in the replacement state based on the value of the timer 29 that measures the mounting time of the battery 34. Therefore, the relocation detection system 1 can easily avoid running out of the battery 34 in advance.

  When the battery 34 is in a prior replacement state before the replacement state (S21: YES), the CPU 21 notifies the prior replacement state of the battery 34 (S24). The CPU 21 proceeds to S21 until the replacement of the battery 34 is completed (S28: NO). The operator recognizes the pre-replacement state of the battery 34 and executes the battery 34 replacement operation. Therefore, the relocation detection system 1 can easily avoid the battery 34 running out of battery in advance.

  When the battery 34 is in the LOW state, the detection voltage of the voltage detection unit 37 becomes equal to or lower than the second threshold value. Since the relocation detection system 1 determines whether or not the battery 34 is in the LOW state based on the potential difference of the mounting portion 36 (S23), it is easy to avoid running out of the battery 34 in advance.

  After the detection voltage of the voltage detection unit 37 becomes 0 V, which is a value less than the second threshold value, the CPU 21 shifts the process to S21 until it becomes equal to or higher than the second threshold value (S28: NO). For example, when the worker leaves the relocation detection system 1 with the battery 34 removed from the mounting portion 36, the detection voltage is not switched from 0V (S28: NO). For example, when the battery 34 that is deteriorated by the operator is erroneously attached to the attachment portion 36, the detected voltage does not become equal to or higher than the second threshold value after becoming 0 V (S28: NO). The CPU 21 determines that the replacement work of the battery 34 has not been completed (S28: NO), and continues the warning display (S25, S27). Therefore, the operator can reliably execute the replacement work of the battery 34 in the replacement state or the LOW state.

  The present invention is not limited to the above embodiment. The relocation detection device 30 of the above-described embodiment detects the relocation of the machine tool 10, but may detect relocation of a machine other than the machine tool. Although the transfer detection device 30 of the above embodiment is attached to the machine tool 10, for example, only the vibration detector 33 may be attached to the machine tool 10. Instead of being arranged inside the control box 9, the transfer detection device 30 may be provided on the bottom wall of the main body 6 of the machine tool 10, for example.

  CPU31 acquires the detection voltage of the voltage detection part 37 according to the confirmation signal from CPU21, and does not determine whether the acquired detection voltage satisfy | fills predetermined conditions, such as Formula (A), (B). Also good. For example, the CPU 21 may directly acquire the detection voltage of the voltage detection unit 37 via the I / F unit 35 of the relocation detection device 30. In this case, CPU21 should just determine whether predetermined conditions, such as Formula (A) and (B), are satisfy | filled based on the acquired detection voltage.

  When the battery 34 is determined to be replaced (S28), the CPU 31 determines whether or not the detection voltage of the voltage detection unit 37 has been switched to 0V that is less than the second threshold, and is a third threshold that is less than the second threshold and greater than 0V. You may determine whether it switched to less than. When the battery 34 is in the LOW state (S23: YES), the CPU 21 does not determine whether or not the detection voltage of the voltage detection unit 37 has been switched to 0V, and only determines whether or not the detection voltage exceeds the second threshold value. You may judge. When determining whether or not to replace the battery 34, the CPU 31 determines whether or not the detected voltage of the voltage detector 37 has exceeded a second threshold value, instead of determining whether or not the detected voltage has exceeded a second threshold value. Also good. The fourth threshold value may be a value close to the detection voltage of the voltage detection unit 37 when the unused battery 34 is mounted on the mounting unit 36.

  The timer 29 may be provided in the relocation detection device 30 instead of the numerical control device 20. In this case, the CPU 31 may acquire the value measured by the timer 29, determine whether the equation (B) or the like is satisfied, and transmit information including the determination result to the CPU 31 (S22). The timer 29 provided in the relocation detection device 30 may time the time during which the battery 34 supplies power to the relocation detection device 30 instead of measuring the mounting time of the battery 34. The timer 29 of this modification stops timing while the AC / DC converter 26 supplies power to the relocation detection device 30, while executing time measurement while the battery 34 supplies power to the relocation detection device 30. .

  The relocation detection system 1 may not include the timer 29. For example, the CPU 21 may acquire the battery 34 replacement date and time and store the acquired date and time, for example, in the storage device 24 in the reset process of S29. The CPU 21 can determine whether or not the battery 34 is in an exchange state depending on whether or not the specific time has elapsed since the date and time of storage in the storage device 24 (S22). Instead of the CPU 21, the CPU 31 may store the replacement date and time of the battery 34 in the storage device 32 instead of the storage device 24. In this case, the CPU 31 may determine whether or not the battery 34 is in a replacement state and output the determination result to the CPU 21.

  The CPU 21 may not execute S22, S23, and S25 to S27. In this modification, the advance replacement state is an example of the specific state of the present invention, the CPU 21 that executes S21 is an example of the state determination unit of the present invention, and the CPU 21 that executes S24 is the notification unit of the present invention. It is an example.

  The relocation detection system 1 may include a sensor such as a limit switch, for example, instead of the voltage detection unit 37. The limit switch is electrically connected to the CPU 21, for example. The limit switch may be fixed to the mounting portion 36 so as to be able to contact and separate from the cover 17. When the cover 17 is in the closed position, the limit switch contacts the cover 17 and outputs an off signal. When the cover 17 is in the open position, the limit switch is separated from the cover 17 and outputs an ON signal. The CPU 21 can determine whether or not the cover 17 has opened and closed the mounting portion 36 by determining whether or not the output signal of the limit switch has been switched in the order of the off signal, the on signal, and the off signal. Since the cover 17 opens and closes the mounting portion 36 with the replacement of the battery 34, the CPU 21 can determine whether or not the replacement of the battery 34 has been completed (S28). Instead of the limit switch, for example, a transmissive sensor may be provided in the mounting portion 36. The transmission type sensor can detect whether or not the cover 17 is in the closed position, for example, and may output an on signal and an off signal to the CPU 21 according to the detection result, for example.

  For example, the limit switch may be fixed to the mounting portion 36 so as to be able to contact and separate from the battery 34 instead of the cover 17. The battery 34 attached to the attachment part 36 contacts the limit switch. The battery 34 removed from the mounting portion 36 is separated from the limit switch. The limit switch may output an on signal and an off signal to the CPU 21 in accordance with contact or non-contact with the battery 34. Therefore, the CPU 21 can determine whether or not the replacement work of the battery 34 has been completed by determining whether or not the output signal of the limit switch has been switched twice (S28).

  The operation restriction process, the release process, and the battery inspection process of the above embodiment are not limited to the example executed by the CPU 21, but may be executed by an electronic component such as AISC other than the CPU 31.

1 Relocation detection system 21 CPU
30 Relocation detection device 34 Battery 36 Mounting part 37 Voltage detection part

Claims (6)

A relocation detecting means having a mounting portion to which a battery can be mounted;
Relocation determination means for determining relocation of the machine based on output information of the relocation detection means;
A battery exhaustion determining means for determining whether the battery mounted on the mounting portion is out of battery;
When the relocation determining means determines that the machine has been relocated, or when the battery depletion determining means determines that the battery depletion has occurred, limiting means for restricting the operation of the machine;
In the relocation detection system comprising: release means for releasing the restriction of the operation by the restriction means;
State determination means for determining whether or not the battery mounted on the mounting unit is in a specific state in which it is time to replace;
When the state determination unit determines that the battery is in the specific state, a notification unit that notifies the specific state of the battery;
A replacement determination unit for determining whether or not the battery mounted on the mounting unit has been replaced when the notification unit reports the specific state of the battery;
The relocation detection system, wherein the notification unit notifies the specific state until the replacement determination unit determines that the battery has been replaced.   The state determination unit determines that the battery is in the specific state when a specific time has elapsed since the battery has been mounted on the mounting part. The relocation detection system according to claim 1. A pre-determining means for determining whether or not the mounting time has passed a pre-specified time that is shorter than the specified time;
When the pre-determining unit determines that the pre-specified time has passed, the pre-notifying unit notifies the elapse of the pre-specified time.
When the advance notification means notifies the advance of the specific time in advance, or when the notification means notifies the specific state of the battery, the replacement determination means determines whether or not the battery has been replaced. Judgment,
The relocation detection system according to claim 2, wherein the advance notification unit notifies the elapse of the prior specific time until the replacement determination unit determines that the battery has been replaced. A voltage detection unit for detecting a potential difference in the mounting unit;
4. The state determination unit determines that the battery is in the specific state when the potential difference detected by the voltage detection unit is less than a predetermined threshold value. The relocation detection system according to any one of the above. A voltage detection unit for detecting a potential difference in the mounting unit;
2. The replacement determination unit determines that the battery has been replaced when the potential difference detected by the voltage detection unit becomes greater than or equal to the threshold value after being less than a predetermined threshold value. The relocation detection system according to any one of? Relocation of the machine is determined based on output information of the relocation detection means of a relocation detection system having a relocation detection means having a mounting portion to which a battery can be mounted and capable of detecting the relocation of the machine by the power of the battery. A relocation determination step,
A battery exhaustion determination step of determining battery exhaustion of the battery attached to the attachment part;
When the relocation determination step determines that the machine has been relocated, or when the battery depletion determination step determines that the battery has been depleted, a limiting step of restricting the operation of the machine;
In the control method of the relocation detection system comprising: a release step of releasing the restriction of the operation by the restriction step,
A state determination step of determining whether or not the battery mounted on the mounting portion is in a specific state in which it is time to replace;
When the state determination step determines that the battery is in the specific state, a notification step of notifying the specific state of the battery;
A replacement determination step for determining whether or not the battery mounted on the mounting portion has been replaced when the notification step notifies the specific state of the battery;
The control method is characterized in that the notification step notifies the specific state until the replacement determination step determines that the battery has been replaced.

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