WO2020049841A1 - 電動工具および電動工具システム - Google Patents
電動工具および電動工具システム Download PDFInfo
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- WO2020049841A1 WO2020049841A1 PCT/JP2019/025443 JP2019025443W WO2020049841A1 WO 2020049841 A1 WO2020049841 A1 WO 2020049841A1 JP 2019025443 W JP2019025443 W JP 2019025443W WO 2020049841 A1 WO2020049841 A1 WO 2020049841A1
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- Prior art keywords
- power tool
- unit
- motor
- physical quantity
- quantity data
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
- B25B23/1475—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers for impact wrenches or screwdrivers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
- B25F5/00—Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B15/00—Systems controlled by a computer
- G05B15/02—Systems controlled by a computer electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/147—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for electrically operated wrenches or screwdrivers
Definitions
- the present disclosure relates to a power tool and a system for managing a state of the power tool.
- Patent Literature 1 discloses a work information acquisition unit that acquires work information related to work contents, a position information acquisition unit that acquires position information of a work place, a work object information acquisition unit that acquires work object information, and work information and position.
- a work management apparatus including an information management unit that stores information and work target information in a storage unit in association with each other is disclosed.
- the work management device further includes a determination unit that determines the quality of the work based on the design drawing data. The result of determining the quality of the work is displayed on the display unit.
- the present disclosure has been made in view of such a situation, and an object of the present disclosure is to provide a technique used for state management of a power tool.
- an electric power tool includes a motor, an output shaft to which a tip tool can be attached, a power transmission mechanism for transmitting a rotation output of the motor to the output shaft, and rotating the motor.
- An operation switch for controlling the rotation of the motor in response to a user's operation of turning on the operation switch, a detection unit for detecting physical quantity data during rotation of the motor, and an electric tool using the physical quantity data.
- a state determination unit that determines whether the power tool is in a deteriorated state; and a notification unit that notifies that the power tool is in a deteriorated state when the motor is not rotating.
- a power tool system including a power tool and a server system, the power tool including a motor, an output shaft to which a tip tool can be attached, and a power transmitting a rotation output of the motor to the output shaft.
- a transmission mechanism an operation switch for rotating the motor, a motor control unit that controls the rotation of the motor in accordance with an ON operation of the operation switch by a user, and a detection unit that detects physical quantity data during rotation of the motor.
- a tool-side transmitting unit that transmits the detected physical quantity data to the server system when the motor is not rotating.
- the server system includes a server-side receiving unit that receives the transmitted physical quantity data, a state determination unit that determines whether the power tool is in a degraded state using the physical quantity data, and determination data by the state determination unit that is transmitted to the power tool. And a server-side transmitting unit for transmitting.
- the power tool includes a tool-side receiving unit that receives the transmitted determination data, and a notification unit that notifies that the power tool is in a deteriorated state when the motor is not rotating.
- FIG. 1 shows a configuration of a power tool system 100 according to the embodiment.
- the power tool system 100 includes the power tool 1 and the server system 50.
- An access point (hereinafter, referred to as an “AP”) 40 is interconnected with the power tool 1 as a wireless LAN client, and is connected to an external network 42 such as the Internet.
- the router 41 has a wired connection to the server system 50 and connects to the network 42.
- the power tool 1 and the server system 50 are communicably connected via a network 42.
- FIG. 2 shows functional blocks of the power tool 1 according to the embodiment.
- the power tool 1 includes a housing 2 in which a driving unit 3, a control unit 10, a communication unit 15, a notification unit 18, a storage unit 19, a detection unit 20, a clock 25, and a battery 30 are provided.
- the battery 30 is provided on the lower end side of the housing 2 and supplies power to each component of the power tool 1.
- the lower end of the housing 2 may be formed as a battery pack separate from the tool body, and may be detachable from the tool body.
- the clock 25 is a real-time clock, generates current date and time information, and supplies it to the control unit 10.
- the drive unit 3 includes a motor 4 as a drive source and a power transmission mechanism 6 connected to a motor shaft 5 of the motor 4, and drives the output shaft 7.
- a tip tool mounting portion 8 is connected to the output shaft 7 so that a tip tool such as a driver for applying a tightening torque to the screw member can be attached.
- the power transmission mechanism 6 is a mechanism that transmits the rotation output of the motor 4 to the output shaft 7.
- the power transmission mechanism 6 may include a planetary gear reduction mechanism that meshes with a pinion gear attached to the motor shaft 5.
- the power tool 1 of the embodiment is an impact rotary tool, and the power transmission mechanism 6 includes an impact mechanism that applies an intermittent rotational impact to the output shaft 7.
- the detection unit 20 detects physical quantity data in the power tool 1 while the motor 4 is rotating.
- the detection unit 20 may include a tightening torque detection unit 21, a current detection unit 22, a rotation speed detection unit 23, and a vibration detection unit 24.
- the tightening torque detector 21 detects a tightening torque of the screw member.
- the tightening torque detector 21 may include a magnetostrictive torque sensor attached to the output shaft 7 and a rotation angle sensor of the output shaft 7.
- the torque sensor detects a change in magnetic permeability according to axial distortion caused by application of torque to the output shaft 7 with a coil installed in a non-rotating portion, and outputs a voltage signal according to the distortion.
- the rotation angle sensor outputs a rotation angle of the output shaft 7.
- the tightening torque detector 21 calculates and outputs the tightening torque of the screw member using the voltage signal corresponding to the distortion and the rotation angle of the output shaft 7.
- the current detector 22 detects a current supplied to the motor 4.
- the rotation speed detection unit 23 detects the rotation speed (rotation speed) of the motor 4.
- the rotation speed detection unit 23 may be a magnetic rotary encoder that detects the rotation angle of the motor 4, a Hall element IC, or the like.
- the vibration detecting unit 24 detects vibration generated in the housing 2.
- the vibration detection unit 24 may be a displacement sensor, a speed sensor, or an acceleration sensor, and may be formed by an electromagnetic element, a piezoelectric element, a capacitance element, or the like.
- the communication unit 15 has a transmission unit 16 and a reception unit 17.
- the communication unit 15 may be a module that performs wireless communication with the AP 40 using a communication protocol such as the IEEE 802.11 protocol.
- the communication unit 15 may have a wireless communication function in the fourth generation mobile communication system. Note that the communication unit 15 may be a module that performs wired communication with an external device using a USB cable or the like instead of the wireless communication module.
- the notification unit 18 is an output interface that outputs information to a user.
- the notification unit 18 may include a speaker that outputs information by voice and / or a display that outputs information by screen.
- the storage unit 19 is a memory, and includes a ROM (Read Only Memory) and a RAM (Random Access Memory).
- the ROM stores at least identification information (tool ID) for identifying the electric tool 1.
- the ROM further stores a control program used by the motor control unit 12.
- the RAM temporarily stores information transmitted from the transmission unit 16 and temporarily stores information received by the reception unit 17.
- a main body of the power tool or the method according to the present disclosure includes a computer.
- the computer executes the program, the main function of the tool or the method according to the present disclosure is realized.
- the computer includes, as a main hardware configuration, a processor that operates according to a program.
- the type of the processor is not limited as long as the function can be realized by executing the program.
- the processor is configured by one or a plurality of electronic circuits including a semiconductor integrated circuit (IC) or an LSI (large scale integration). Here, they are called ICs or LSIs, but the names vary depending on the degree of integration, and may be called system LSIs, VLSIs (very large scale integration) or USLIs (ultra large scale integration).
- a field programmable gate array which is programmed after the manufacture of the LSI, or a reconfigurable logic device capable of reconfiguring junction relations inside the LSI or setting up circuit sections inside the LSI, is also used for the same purpose.
- the plurality of electronic circuits may be integrated on one chip, or may be provided on a plurality of chips.
- a plurality of chips may be integrated in one device, or may be provided in a plurality of devices.
- the program is recorded on a non-transitory recording medium such as a computer-readable ROM, an optical disk, and a hard disk drive.
- the program may be stored in a recording medium in advance, or may be supplied to the recording medium via a wide area communication network including the Internet or the like.
- the control unit 10 is realized by a computer mounted on a control board.
- the control unit 10 has a function of controlling the electric power tool 1 comprehensively, and executes various processes related to the electric power tool 1.
- the control unit 10 includes an acquisition unit 11, a motor control unit 12, a communication control unit 13, and a notification control unit 14.
- the motor control unit 12 controls the rotation of the motor 4.
- the acquisition unit 11 acquires the physical quantity data detected while the motor 4 is rotating.
- the physical quantity data detected during the rotation of the motor 4 may include at least the physical quantity data detected by the detection unit 20. That is, while the motor 4 is rotating, the acquisition unit 11 receives the tightening torque value from the tightening torque detection unit 21, the motor current value from the current detection unit 22, the motor speed from the rotation speed detection unit 23, and the vibration from the vibration detection unit 24. Get each data.
- the acquiring unit 11 associates the physical quantity data with time information about the time when the physical quantity data was acquired, and stores the physical quantity data in the storage unit 19.
- the time information associated with the physical quantity data may be absolute time information indicating the current time supplied from the clock 25. Further, the associated time information may be relative time information indicating an elapsed time from a reference time, for example, a manufacturing date and time or a first use date and time.
- the storage unit 19 stores the physical quantity data and time information on the acquisition time of the physical quantity data in association with each other.
- An operation switch 9 that can be operated by a user is provided on the front side of the grip portion of the housing 2.
- the operation switch 9 may be a trigger type switch that can be operated by a user to rotate the motor 4.
- the motor control unit 12 controls the rotation of the motor 4 according to a user's ON operation of the operation switch 9. Specifically, the motor control unit 12 controls the applied current of the motor 4 according to the operation amount of the operation switch 9 to adjust the motor rotation speed.
- the target torque value of the current work is set in the storage unit 19.
- the motor control unit 12 monitors the tightening torque value detected by the tightening torque detecting unit 21, and automatically stops the rotation of the motor 4 when the tightening torque value reaches the target torque value. By performing such control, the tightening torque of the screw member is managed.
- the communication control unit 13 controls the transmission operation by the transmission unit 16 and the reception operation by the reception unit 17.
- the communication unit 15 connects to the server system 50 via the network 42.
- the communication control unit 13 causes the transmission unit 16 to transmit the detected physical quantity data and time information to the server system 50 when the motor 4 is not rotating.
- the transmission unit 16 transmits the physical quantity data and the time information stored in the storage unit 19 to the server system 50 when the motor 4 is not rotating. It is preferable that the transmission unit 16 transmits the physical quantity data and the time information acquired for one fastening operation to the server system 50 after the operation is completed.
- FIG. 3 shows functional blocks of the server system 50 of the embodiment.
- the server system 50 includes a communication unit 51, a state determination unit 54, a notification unit 55, and a storage device 56.
- the communication unit 51 has a receiving unit 52 and a transmitting unit 53.
- the server system 50 may be operated and managed by, for example, a manufacturer of the power tool 1.
- FIG. 1 shows a state in which the server system 50 is connected to only one electric tool 1, but the server system 50 is connected to a plurality of electric tools 1 and acquired by each electric tool 1.
- the received physical quantity data and time information are received.
- the transmission unit 16 transmits physical quantity data and time information to the server system 50 in association with its own tool ID.
- the receiving unit 52 receives the physical quantity data and the time information transmitted from the power tool 1.
- the storage device 56 stores the received physical quantity data and time information in association with the tool ID of the power tool 1.
- the state determination unit 54 determines whether or not the power tool 1 is in a deteriorated state using the received physical quantity data and time information.
- the server system 50 may include one or more processing devices.
- the server system 50 may include a collection device that collects physical quantity data and the like transmitted from the power tool 1 and an evaluation device that evaluates the state of the power tool 1 using the collected physical quantity data and the like.
- the communication unit 51 and the storage device 56 illustrated in FIG. 3 may be provided as components on the collection device side, and the state determination unit 54 and the notification unit 55 may be provided as components on the evaluation device side.
- FIG. 4 shows an example of physical quantity data and time information received for one operation.
- FIG. 4 shows the relationship between the tightening torque value and the vibration data among the physical quantity data.
- the tightening torque value reaches the target torque value (Tt [N ⁇ m]), and the rotation of the motor 4 is automatically started.
- Tt target torque value
- the storage device 56 stores a plurality of sets of physical quantity data and time information acquired for each past operation in association with the tool ID.
- the state determination unit 54 reads the physical quantity data and time information associated with the same tool ID from the storage device 56, The time transition of the state of the power tool 1 is analyzed to determine whether or not the current physical quantity data indicates deterioration.
- the state determination unit 54 determines that the final tightening torque value is Tt [N ⁇ m] with reference to the current tightening torque value data. Among these, physical quantity data whose final tightening torque value is Tt [N ⁇ m] is specified.
- the state determination unit 54 has reached Tt [N ⁇ m] from the point in time when the tightening torque value has exceeded 0, using change data of the tightening torque value for a predetermined number of times in the past (for example, 50 times).
- An average time (Ts) is obtained.
- the state determination unit 54 may calculate, in advance, for each final tightening torque value, an average time Ts at which the tightening torque has been reached, and hold the average time Ts.
- the state determination unit 54 evaluates the degree of the state of the power tool 1, here the degree of deterioration, in accordance with the R value.
- the degree of stepwise deterioration may be defined for a plurality of R values. Further, the degree of deterioration may be evaluated according to the difference between the current arrival time (t2 ⁇ t1) and the average time Ts.
- the state determination unit 54 When it is determined that the power tool 1 is in a deteriorated state, the state determination unit 54 preferably specifies a deteriorated portion in the power tool 1.
- the tightening torque data, current data, motor rotation speed data, and vibration data acquired from time t1 to t2 are transmitted from the power tool 1 as physical quantity data.
- the state determination unit 54 specifies a deteriorated portion in the power tool 1. It should be noted that whether the data is normal or abnormal may be determined by comparing it with reference data, or may be determined by comparing past physical quantity data stored in the storage device 56 for the same electric power tool 1.
- some cases for specifying the deteriorated portion will be described.
- the state determination unit 54 determines that the motor 4 is normal. At this time, if the vibration data is abnormal, the state determination unit 54 determines that the power transmission mechanism 6 is rattled, and specifies that the deteriorated portion is the power transmission mechanism 6.
- the state determination unit 54 determines that the motor 4 is normal. At this time, if the tightening torque data is abnormal, the state determination unit 54 determines that an abnormality has occurred in the impact mechanism of the power transmission mechanism 6 and specifies that the deteriorated portion is the impact mechanism.
- the notifying unit 55 causes the transmitting unit 53 to transmit the determination data indicating the determination result by the state determining unit 54 to the power tool 1.
- the determination data includes data indicating that the power tool 1 is in a deteriorated state, and data indicating the specified deteriorated portion.
- the notification unit 55 does not need to transmit the determination data from the transmission unit 53. That is, the transmission unit 53 may transmit the determination data to the power tool 1 only when the state determination unit 54 determines that the power tool 1 is in a deteriorated state.
- the receiving unit 17 receives the transmitted determination data.
- the notification control unit 14 causes the notification unit 18 to notify the determination data.
- the notification unit 18 outputs a sound of the determination result from a speaker, or outputs the determination result to a screen from a display. The user can know that the power tool 1 has deteriorated and the deteriorated part based on the content notified from the notifying unit 18 and take measures such as sending out a repair if necessary.
- the notification control unit 14 causes the notification unit 18 to notify that the power tool 1 is in a deteriorated state and the deteriorated portion when the motor 4 is not rotating. While the motor 4 is rotating, the tightening operation is being performed, so that the user may not notice even if the notification unit 18 notifies. On the other hand, it is preferable that the determination result indicating the state of deterioration is promptly notified to the user. Therefore, if the motor 4 is not rotating when the receiving unit 17 receives the determination data, the notification control unit 14 promptly outputs the determination result from the notification unit 18. If the motor 4 is rotating when the receiving unit 17 receives the determination data, the notification control unit 14 causes the notification unit 18 to immediately output the determination result after the rotation of the motor 4 ends. As described above, the notification control unit 14 controls the notification timing, so that the user can reliably know that the power tool 1 is in a deteriorated state.
- the notification control unit 14 may cause the notification unit 18 to notify that the power tool 1 is in a deteriorated state and the deteriorated location when the operation switch 9 is not turned on.
- the motor control unit 12 of the embodiment automatically stops the rotation of the motor 4. Thereafter, the user turns off the operation switch 9 to remove the tip tool from the work.
- the notification unit 18 notifies the user that the power tool 1 is in a deteriorated state and notifies the user of the deterioration location by notifying the user of the information regarding the deterioration. Can be.
- the server system 50 determines the deterioration of the power tool 1 in the power tool system 100.
- the power tool 1 determines the deterioration of the power tool 1 by itself.
- FIG. 5 shows another functional block of the power tool 1a according to the embodiment.
- the power tool 1a includes a drive unit 3, a control unit 10, a communication unit 15, a notification unit 18, a storage unit 19, a detection unit 20, a clock 25, and a battery 30.
- the clock 25 is a real-time clock, generates current date and time information, and supplies it to the control unit 10.
- the configurations denoted by the same reference numerals have the same functions. Therefore, the description of the components denoted by the same reference numerals in the power tool 1a will be appropriately omitted. 5 is different from the electric tool 1 shown in FIG. 2 in that the electric tool 1a shown in FIG.
- the drive unit 3 includes a motor 4, an output shaft 7 to which a tip tool can be attached, and a power transmission mechanism 6 for transmitting the rotation output of the motor 4 to the output shaft 7.
- the motor control unit 12 controls the rotation of the motor 4 according to a user's ON operation of the operation switch 9.
- the detection unit 20 detects physical quantity data in the electric tool 1a while the motor 4 is rotating.
- the acquisition unit 11 acquires the physical quantity data detected while the motor 4 is rotating, and stores the physical quantity data in the storage unit 19 in association with time information about the time when the physical quantity data was acquired.
- the control unit 10 includes the state determination unit 26.
- the state determination unit 26 reads the physical quantity data and the time information from the storage unit 19, and determines whether or not the current physical quantity data of the power tool 1 indicates deterioration. When determining that the power tool 1 is in a deteriorated state, the state determination unit 26 specifies a deteriorated portion in the power tool 1.
- the deterioration determination and the specification of the deterioration part by the state determination unit 26 may be the same processing as the deterioration determination and the specification of the deterioration part described with respect to the state determination unit 54 in the server system 50.
- the state determination unit 54 specifies the deteriorated portion in the power tool 1 when at least one of the physical quantity data indicates an abnormality.
- whether the data is normal or abnormal may be determined by comparing the data with reference data, the state determination unit 26 of the power tool 1 transmits the reference data for comparison to the server system 50.
- the state determination unit 26 may determine whether the current physical quantity data is normal or abnormal by comparing the physical quantity data stored in the storage unit 19 with the past physical quantity data. The state determination unit 26 may determine whether each of the current physical quantity data is normal or abnormal, and specify the deteriorated location according to the criteria of the above-described cases 1 to 3.
- the notification control unit 14 causes the notification unit 18 to notify that the power tool 1 is in a deteriorated state when the motor 4 is not rotating.
- the state determination unit 26 specifies a deteriorated portion in the power tool 1
- the notification control unit 14 simultaneously notifies the power tool 1 that the power tool 1 is in a deteriorated state and the deteriorated portion from the notification unit 18. You may be notified. While the motor 4 is rotating, the tightening operation is being performed, so that the user may not notice even if the notification unit 18 notifies.
- the notification unit 18 notifies the user of the information regarding the deterioration when the motor 4 is not rotating, so that the user can know that the power tool 1 is in a deteriorated state.
- the state determination unit 26 does not determine the deterioration of the power tool 1
- the notification unit 18 does not need to notify the determination result.
- the notification control unit 14 may cause the notification unit 18 to notify that the power tool 1 is in a deteriorated state and the deteriorated location when the operation switch 9 is not turned on.
- the motor control unit 12 of the embodiment automatically stops the rotation of the motor 4. Thereafter, the user turns off the operation switch 9 to remove the tip tool from the work.
- the notification unit 18 notifies the user that the power tool 1 is in a deteriorated state and notifies the user of the deterioration location by notifying the user of the information regarding the deterioration. Can be.
- the detection unit 20 may further include a temperature detection unit that detects a temperature and a sound detection unit that detects a sound.
- the communication control unit 13 transmits the detected physical quantity data and time information to the server system 50 from the transmission unit 16 when the motor 4 is not rotating, but the power of the power tool 1 is turned on or off. You may make it transmit when it turns off.
- the transmission unit 16 of the power tool 1a since the power tool 1a self-determines the degree of deterioration, the transmission unit 16 of the power tool 1a does not transmit the detected physical quantity data or the like to the server system 50. In a modification, the transmitting unit 16 of the electric tool 1a may transmit the detected physical quantity data, the determination result, and the like to the server system 50.
- An electric power tool (1) includes a motor (4), an output shaft (7) to which a tip tool can be attached, a power transmission mechanism (6) that transmits a rotation output of the motor to the output shaft, An operation switch (9) for rotating the motor, a motor control unit (12) for controlling the rotation of the motor in response to a user turning on the operation switch, and a detection unit for detecting physical quantity data during rotation of the motor (20), a state determination unit (26) that determines whether the power tool is in a degraded state using the physical quantity data, and a notification unit that reports that the power tool is in a degraded state when the motor is not rotating. (18).
- the notifying unit (18) notifies that the power tool is in a deteriorated state when the operation switch is not turned on.
- the state determination unit (26) preferably specifies a deteriorated portion of the power tool, and the notification unit (18) preferably notifies the specified portion. .
- a power tool system (100) includes a power tool (1) and a server system (50).
- the power tool (1) includes a motor (4), an output shaft (7) to which a tip tool can be attached, a power transmission mechanism (6) for transmitting a rotation output of the motor to the output shaft, and a power transmission mechanism (6) for rotating the motor.
- a tool-side transmission unit (16) for transmitting the detected physical quantity data to the server system when the device is not rotating.
- the server system (50) includes a server-side receiving unit (52) that receives the transmitted physical quantity data, a state determining unit (54) that determines whether the power tool is in a deteriorated state using the physical quantity data, A server-side transmission unit (53) for transmitting the determination data by the determination unit to the electric power tool (1).
- the power tool (1) includes a tool-side receiving unit (17) that receives the transmitted determination data, and a notification unit (18) that notifies that the power tool is in a deteriorated state when the motor is not rotating. May have.
- the notifying unit (18) notifies that the power tool is in a deteriorated state when the operation switch is not turned on.
- the state determination unit (54) specifies a deteriorated portion of the power tool, and the notification unit (18) preferably notifies the specified portion. .
- the present disclosure can be used in the field of managing a power tool and a state of the power tool.
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Abstract
Description
R=(t2-t1)/Ts
として算出する。
状態判定部54は、R値に応じて、電動工具1の状態の程度、ここでは劣化の程度を評価する。R値が所定値(たとえば1.25)以上である場合、状態判定部54は、電動工具1が大きく劣化している状態にあることを判定してよい。なお複数のR値に対して、段階的な劣化の程度が定義されてもよい。また劣化の程度は、今回の到達時間(t2-t1)と平均時間Tsとの差分に応じて評価されてもよい。
電流データが正常で、回転数データが異常である場合、状態判定部54は、モータ4が正常に回転していないことを判定し、劣化箇所がモータ4であることを特定する。
電流データおよび回転数データが正常である場合、状態判定部54は、モータ4が正常であることを判定する。このとき振動データが異常であると、状態判定部54は、動力伝達機構6にガタが生じていることを判定し、劣化箇所が動力伝達機構6であることを特定する。
電流データおよび回転数データが正常である場合、状態判定部54は、モータ4が正常であることを判定する。このとき締付トルクデータが異常であると、状態判定部54は、動力伝達機構6におけるインパクト機構に異常が生じていることを判定し、劣化箇所がインパクト機構であることを特定する。
本開示のある態様の電動工具(1)は、モータ(4)と、先端工具を取付可能な出力軸(7)と、モータの回転出力を出力軸に伝達する動力伝達機構(6)と、モータを回転させるための操作スイッチ(9)と、ユーザによる操作スイッチのオン操作に応じて、モータの回転を制御するモータ制御部(12)と、モータの回転中に物理量データを検出する検出部(20)と、物理量データを用いて、電動工具が劣化した状態にあるか判定する状態判定部(26)と、モータの非回転時に、電動工具が劣化した状態にあることを報知する報知部(18)と、を備えてよい。
Claims (6)
- 電動工具であって、
モータと、
先端工具を取付可能な出力軸と、
前記モータの回転出力を前記出力軸に伝達する動力伝達機構と、
前記モータを回転させるための操作スイッチと、
ユーザによる前記操作スイッチのオン操作に応じて、前記モータの回転を制御するモータ制御部と、
前記モータの回転中に物理量データを検出する検出部と、
前記物理量データを用いて、前記電動工具が劣化した状態にあるか判定する状態判定部と、
前記モータの非回転時に、前記電動工具が劣化した状態にあることを報知する報知部と、
を備えることを特徴とする電動工具。 - 前記報知部は、前記操作スイッチがオン操作されていないときに、前記電動工具が劣化した状態にあることを報知する、
ことを特徴とする請求項1に記載の電動工具。 - 前記状態判定部は、前記電動工具が劣化した状態にあることを判定する場合に、前記電動工具において劣化した箇所を特定し、
前記報知部は、特定された箇所を報知する、
ことを特徴とする請求項1または2に記載の電動工具。 - 電動工具およびサーバシステムを含む電動工具システムであって、
前記電動工具は、
モータと、
先端工具を取付可能な出力軸と、
前記モータの回転出力を前記出力軸に伝達する動力伝達機構と、
前記モータを回転させるための操作スイッチと、
ユーザによる前記操作スイッチのオン操作に応じて、前記モータの回転を制御するモータ制御部と、
前記モータの回転中に物理量データを検出する検出部と、
前記モータの非回転時に、検出された前記物理量データを、前記サーバシステムに送信する工具側送信部と、を有し、
前記サーバシステムは、
送信された前記物理量データを受信するサーバ側受信部と、
前記物理量データを用いて、前記電動工具が劣化した状態にあるか判定する状態判定部と、
前記状態判定部による判定データを前記電動工具に送信するサーバ側送信部と、を有し、
前記電動工具は、
送信された前記判定データを受信する工具側受信部と、
前記モータの非回転時に、前記電動工具が劣化した状態にあることを報知する報知部と、を有する、
ことを特徴とする電動工具システム。 - 前記報知部は、前記操作スイッチがオン操作されていないときに、前記電動工具が劣化した状態にあることを報知する、
ことを特徴とする請求項4に記載の電動工具システム。 - 前記状態判定部は、前記電動工具が劣化した状態にあることを判定する場合に、前記電動工具において劣化した箇所を特定し、
前記報知部は、特定された箇所を報知する、
ことを特徴とする請求項4または5に記載の電動工具システム。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP19856768.7A EP3848157B1 (en) | 2018-09-05 | 2019-06-26 | Power tool and power tool system |
| US17/273,705 US12070845B2 (en) | 2018-09-05 | 2019-06-26 | Electronic power tool and electric power tool system |
| CN201980057855.9A CN112654465B (zh) | 2018-09-05 | 2019-06-26 | 电动工具及电动工具系统 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018166426A JP7165877B2 (ja) | 2018-09-05 | 2018-09-05 | 電動工具 |
| JP2018-166426 | 2018-09-05 |
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| WO2020049841A1 true WO2020049841A1 (ja) | 2020-03-12 |
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| Country | Link |
|---|---|
| US (1) | US12070845B2 (ja) |
| EP (1) | EP3848157B1 (ja) |
| JP (1) | JP7165877B2 (ja) |
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| TWI829281B (zh) * | 2021-08-23 | 2024-01-11 | 大陸商東莞市嘉航實業有限公司 | 電動工具及其智慧語音播報方法 |
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| US11590634B2 (en) * | 2020-10-14 | 2023-02-28 | GE Precision Healthcare LLC | Apparatus and method for in-manufacturing evaluation of structural and material properties of fasteners using machine learning |
| JP2024006725A (ja) * | 2022-07-04 | 2024-01-17 | パナソニックホールディングス株式会社 | 電動工具システム、診断方法及びプログラム |
| JP2024057503A (ja) * | 2022-10-12 | 2024-04-24 | パナソニックIpマネジメント株式会社 | インパクト回転工具、判定方法及びプログラム |
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| Publication number | Publication date |
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| CN112654465B (zh) | 2025-01-03 |
| JP7165877B2 (ja) | 2022-11-07 |
| EP3848157B1 (en) | 2025-05-28 |
| CN112654465A (zh) | 2021-04-13 |
| EP3848157A4 (en) | 2021-11-17 |
| EP3848157A1 (en) | 2021-07-14 |
| US20210331305A1 (en) | 2021-10-28 |
| JP2020037166A (ja) | 2020-03-12 |
| US12070845B2 (en) | 2024-08-27 |
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