WO2016042597A1 - Système de gestion de visseuse électrique - Google Patents

Système de gestion de visseuse électrique Download PDF

Info

Publication number
WO2016042597A1
WO2016042597A1 PCT/JP2014/074382 JP2014074382W WO2016042597A1 WO 2016042597 A1 WO2016042597 A1 WO 2016042597A1 JP 2014074382 W JP2014074382 W JP 2014074382W WO 2016042597 A1 WO2016042597 A1 WO 2016042597A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric
value
set value
electric driver
data
Prior art date
Application number
PCT/JP2014/074382
Other languages
English (en)
Japanese (ja)
Inventor
錦戸憲治
齋藤善胤
鈴木康之
湯川浩司
角田信広
Original Assignee
株式会社エニイワイヤ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社エニイワイヤ filed Critical 株式会社エニイワイヤ
Priority to JP2016514191A priority Critical patent/JP6038396B2/ja
Priority to PCT/JP2014/074382 priority patent/WO2016042597A1/fr
Publication of WO2016042597A1 publication Critical patent/WO2016042597A1/fr

Links

Images

Classifications

    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Definitions

  • the present invention relates to an electric driver management system for managing a plurality of general-purpose electric drivers used when assembling and manufacturing automobiles, electrical appliances and the like by a flow operation by a plurality of workers.
  • the screw tightening operation is a simple operation as described above.
  • An operator who is not skilled in the product or the manufacturing method uses a tool such as an impact wrench or an electric screwdriver (hereinafter sometimes referred to as a screw tightening tool). There is a lot to do.
  • Japanese Patent Application Laid-Open No. 7-308864 discloses a technique for completing a tightening force by using a change in the waveform of a torque pulse of an impact type screw tightening device.
  • an inexpensive general-purpose electric screwdriver does not have a torque detection function but has only a tightening function (hereinafter referred to as “general-purpose single driver”). There is also a function electric driver). When such an inexpensive general-purpose single-function electric driver is used, it is difficult to perform control according to the output torque.
  • the present invention provides an electric motor that can easily perform control according to the output torque of the electric driver in an installation that uses a large number of inexpensive general-purpose single-function electric drivers that do not include a mechanism for detecting torque.
  • An object is to provide a driver management system.
  • a plurality of slave stations that can exchange data with the master station are connected to each of the plurality of electric drivers.
  • the slave station is a receiving means for acquiring from the master station a set value group including one or more set values set in advance according to performance characteristics of an electric motor used in the electric driver; Setting value group storage means, detection means for obtaining an electric signal that changes in accordance with the output torque of the electric driver, and comparison between the calculated value obtained based on the value of the electric signal and the setting value Computation processing means and a switch for electrically opening and closing the drive power supply path to the electric driver based on the output result from the computation processing means.
  • the set value group includes at least a T / U set value corresponding to a torque value when the screw tightened by the electric screwdriver is seated in the screw hole, and the calculated value is the T / U.
  • the drive power supply path is closed.
  • the set value group includes a life set value corresponding to an output torque when the electric driver is operated without load without performing a screw tightening operation, and the calculated value is more than an allowable value for the life set value.
  • the output result may indicate a life error.
  • the set value group includes a normal operation set value corresponding to an output torque at which the elapsed time from the start reaches a predetermined time when the electric driver performs screw tightening work and the electric motor is operating normally.
  • the output result may indicate an operation error when the calculated value is out of a predetermined allowable range including the normal operation set value.
  • the set value group includes T / U corresponding to the time required for the screw tightened by the electric screwdriver to be seated in the screw hole when the electric screwdriver tightens the screw.
  • the output result may indicate a T / U time error.
  • the attached member to which the screw is tightened has a member identifier
  • the slave station includes means for reading the member identifier
  • the calculated value is associated with the member identifier and output to the master station. May be.
  • the electric driver may have a driver identifier
  • the slave station may be provided with reading means for the driver identifier
  • identification data obtained from the driver identifier may be output to the master station.
  • the switch may be one that electrically opens and closes the drive power supply path according to operating conditions of a plurality of slave stations.
  • the slave station may have an instruction display means for indicating that an operation instruction for the own station has been received from the master station.
  • the slave station may have a tightening means for increasing the T / U set value.
  • each of the plurality of slave stations is connected to a master station paired with each slave station
  • a method in which the master station and the slave station directly exchange data on a one-to-one basis may be adopted.
  • the system in this case is configured by a plurality of sets of a master station and a slave station.
  • a plurality of slave stations may be connected by a transmission line, and data may be exchanged with a master station connected to the transmission line by a transmission synchronization method or a command method.
  • a transmission line connecting a plurality of slave stations and the master station is a common data signal line.
  • the transmission procedure differs from the control / monitoring data area configured by transmission control data for the plurality of slave stations and transmission monitoring data superimposed by the plurality of slave stations. It is preferable to provide a management data area.
  • the slave station counts the pulses of the transmission signal starting from a start signal indicating the start of the transmission signal transmitted to the common data signal line, and the count value is a local address or reference address setting means. It is preferable to have a control address extracting means for obtaining a timing signal that matches the reference address number delivered from.
  • a comparison operation between the calculated value obtained based on the value of the electric signal that changes in accordance with the output torque of the electric driver and the set value obtained in advance is performed. Done. Then, based on the result of the comparison calculation (output result from the calculation processing means), the drive power supply path to the electric driver is electrically opened and closed.
  • the supply of drive power can be easily controlled according to the output torque with a simple mechanism as compared to the conventional torque detection method. That is, even a general-purpose single-function electric driver that does not have a torque detection function can easily perform control according to the output torque of the electric driver.
  • the electric driver is stopped when the screw is tightened with an appropriate torque. That is, it is possible to control the screw tightening work according to the output torque of the electric driver.
  • the operating current may be reduced due to wear of mechanical parts such as a bearing of an electric driver or lubricating oil, or deterioration of insulation of a winding coil used in an electric motor.
  • the increasing life state can be known before the failure of the electric driver based on the result of the comparison calculation.
  • the mechanical torque-up detection means widely used for detecting torque in conventional screw tightening tools cannot directly confirm a decrease in output torque due to wear of components and the like. Therefore, before starting work, it is necessary to check the torque value of the screw tightening tool one by one with a torque measuring instrument. In facilities where many screw tightening tools are used, it takes time and effort to check the output torque. It was hanging. According to the present invention, it is possible to reduce labor and time for checking such output torque.
  • the set value group includes a normal operation set value
  • an abnormal state such as a screw diameter being small or a screw being arranged obliquely and not being in a suitable state is included in the result of the comparison calculation. Based on this detection, appropriate control can be performed.
  • the set value group includes the T / U time set value, it can be determined based on the result of the comparison operation whether the screw tightening operation has been normally completed.
  • the screw for the attachment target member for which the work has been completed is provided. It is possible to manage the history of work data including torque values at the time of fastening work.
  • the electric driver has a driver identifier and the slave station outputs identification data obtained from the driver identifier to the master station, an appropriate set value group corresponding to the performance characteristics of the electric motor can be easily and accurately set. Therefore, it is possible to prevent malfunction due to an error in the set value.
  • the switch electrically opens and closes the drive power supply path in accordance with the operating conditions of the plurality of slave stations, the electric driver is used only when the conditions related to the operations of the plurality of slave stations are satisfied. Can be activated. That is, it is possible to prevent an erroneous operation by an operator during work consisting of a plurality of steps.
  • the slave station has a tightening means for increasing the T / U set value, the tightening torque can be easily adjusted with a very simple configuration.
  • FIG. 1 is a system configuration diagram showing a schematic configuration of a torque management system for an electric driver according to the present invention. It is a system configuration
  • the torque management system for an electric driver according to the present embodiment manages a plurality of electric drivers 9 used for tightening a screw taken out from a screw storage shelf to an attachment target member 71.
  • the screw storage shelf is provided with a plurality of screw storage portions, and each of the screw storage portions is provided with a lid 6.
  • the lid 6 has an open state in which the screw can be taken out and a closed state in which the screw cannot be taken out.
  • the open state and the closed state are the slave stations provided in each of the screw accommodating portions. 5 can be switched through.
  • Each slave station 5 has an instruction lamp 62 through which the operator is instructed to remove screws.
  • Each of the slave stations 5 also has an input operation lever 61. When an operator who has completed the take-out operation operates the input operation lever 61, information indicating the completion of the operation is used as a monitoring signal, and the common data signal It is output to the lines DP and DN.
  • a slave station 4 is connected to each electric driver 9.
  • the slave station 4 controls the electric driver 9 based on the value of the motor current of the electric driver 9, and the details of the structure and function will be described later.
  • Each slave station 4 is also connected to a common data signal line DP, DN.
  • a master station 2 is also connected to the common data signal lines DP and DN, and the master station 2 is further connected to the control unit 1.
  • a plurality of screw holes 73, in which the tightening order is determined, are provided in the attachment target member 71 of the screw to be tightened.
  • a serial number is assigned to the attachment target member 71 itself.
  • a bar code 72 indicating the serial number is attached to the attachment target member 71, and the serial number read by the bar code reader 7 is input to the slave station 4.
  • the control unit 1 is, for example, a programmable controller, a computer, and the like, and the monitoring parallel obtained based on the output unit 11 that transmits the control parallel data 13 and the monitoring data extracted from the monitoring signals transmitted from the slave stations 4 and 5. It has an input unit 12 that receives data 14. These output unit 11 and input unit 12 are connected to the master station 2.
  • the master station 2 includes an output data unit 21, a management data unit 22, a timing generation unit 23, a master station output unit 24, a master station input unit 25, and an input data unit 26.
  • the control signal which is connected to the common data signal lines DP and DN, is sent to the common data signal lines DP and DN, and is extracted from the monitoring signals sent from the slave stations 4 and 5.
  • the monitoring parallel data 14 is sent to the input unit 12 of the control unit 1.
  • the output data unit 21 delivers the control parallel data 13 from the output unit 11 of the control unit 1 to the master station output unit 24.
  • the management data unit 22 includes a storage unit 29 that stores an IDX table in which data necessary for controlling the electric driver 9 in the slave station 4 is collected. Then, based on the control parallel data 13 from the output unit 11 of the control unit 1 and the IDX table, data to be delivered to the slave station 4 is delivered to the master station output unit 24.
  • the IDX table includes IDX address data, T / U set value IS, T / U time set value TS, normal operation set value YS, life set value MS, starting current set value SS, I / T. It consists of a conversion coefficient K and a screw hole number setting value NS.
  • the IDX address data is data for specifying any one of the plurality of slave stations 4. In this embodiment, the head address number that is the address data of the slave station 4 is used.
  • the T / U set value IS is a torque value when the screw fastened to the member 71 to be attached by the electric driver 9 is seated in the screw hole 73.
  • the value varies depending on the performance characteristics of the electric motor used in the electric driver 9, and a plurality of types of electric motors are obtained in advance by a test or the like.
  • the T / U time set value TS is the time required for the screw fastened to the mounted member 71 by the electric driver 9 to be seated in the screw hole 73 from the start of screw tightening. This is the elapsed time from the start-up (in this embodiment, the fall of the start signal described later), and differs depending on the performance characteristics of the electric motor used in the electric driver 9. Similar to the T / U set value IS, a plurality of types of electric motors are obtained in advance by a test or the like.
  • the normal operation set value YS is obtained when the electric motor is operating normally when the elapsed time from the start reaches a predetermined value (a predetermined value based on the T / U time set value TS in this embodiment).
  • Torque value The value varies depending on the performance characteristics of the electric motor used in the electric driver 9, and, as with the T / U set value IS, a plurality of types of electric motors are obtained in advance by a test or the like.
  • the life set value MS is a torque value when the electric driver 9 is operated with no load (idling operation) without performing a screw tightening operation.
  • the value varies depending on the performance characteristics of the electric motor used in the electric driver 9, and, as with the T / U set value IS, a plurality of types of electric motors are obtained in advance by a test or the like.
  • the activation current set value SS is a current value defined for detecting activation.
  • the motor current I is a defined value for detecting that the electric driver 9 is activated by utilizing the fact that the motor current I is rapidly increased by the activation current. Since the starting current differs depending on the performance characteristics of the electric motor used in the electric driver 9, similar to the T / U set value IS, a plurality of types of electric motors are obtained in advance by a test or the like.
  • the I / T conversion coefficient K is a coefficient for calculating a torque value based on the motor current I.
  • the value varies depending on the performance characteristics of the electric motor used in the electric driver 9, and, as with the T / U set value IS, a plurality of types of electric motors are obtained in advance by a test or the like.
  • the screw hole number setting value NS is the number of screws to be fastened to the work target product (the mounted member 71 in the present embodiment).
  • the timing generation unit 23 includes an oscillation circuit (OSC) 31 and a timing generation unit 32.
  • the timing generation unit 32 generates a timing clock of the system based on the oscillation circuit (OSC) 31, and generates a master station output unit 24, Delivered to the station input unit 25.
  • OSC oscillation circuit
  • the master station output unit 24 includes control data generation means 33 and a line driver 34. Based on the data received from the output data section 21 and the timing clock received from the timing generation section 23, the control data generation means 33 sends a transmission signal to the common data signal lines DP and DN via the line driver 34.
  • the transmission procedure is one frame cycle between the start signal ST of the transmission signal and the next start signal ST, and as shown in FIG. 10, a plurality of control / monitoring data and management data are configured.
  • the start signal ST is longer than the time width of one cycle of the transmission signal and has a potential level higher than the transmission signal threshold value Vst (18 V in this embodiment).
  • the transmission signal includes a potential level area (+24 V in this embodiment) higher than the threshold Vst and a potential level area lower than the threshold Vst.
  • the potential level area higher than the threshold value Vst is the latter half of one cycle and the potential level area lower than the threshold value Vst is the first half of one cycle. May be reversed.
  • the pulse width of the potential level area lower than the threshold value Vst represents the control signal data.
  • the pulse width (3/4) t0 represents the logical data “0”
  • the pulse width (1/4) t0 represents the logical data “1”. ing.
  • the length is not limited and may be determined appropriately.
  • the monitoring signal data is represented by whether the current superimposed in the potential level area lower than the threshold value Vst is larger or smaller than a predetermined value.
  • a current signal smaller than 10 mA represents logical data “0”
  • a current signal greater than 10 mA represents logical data “1”.
  • each of the slave stations 4 Since the transmission signal is a power supply voltage, each of the slave stations 4 generates an internal circuit power supply from the transmission signal.
  • the power source of the electric motor of the electric driver 9 is obtained from the AC power source 10 via a power supply line different from the common data signal lines DP and DN, as shown in FIG.
  • the power source for the motor that opens and closes the lid 6 is also obtained from a power supply line (not shown) different from the common data signal lines DP and DN.
  • the pulse width of the potential level area lower than the threshold value Vst constitutes a control data area as control data, and the control data area corresponds to the upper stage of the control / monitoring data area in FIG.
  • the current value superimposed in the potential level area lower than the threshold value Vst constitutes a monitoring data area as monitoring data, and the monitoring data area corresponds to the lower part of the control / monitoring data area in FIG. Yes.
  • a management data area is provided as shown in FIG. 10
  • the upper part is an area where data is output from the master station (hereinafter referred to as management control data area), and the lower part is an area where data is input to the master station (hereinafter referred to as management monitoring data area). It is to show.
  • the data of the IDX table shown in FIG. 7 (corresponding to the set value group of the present invention) is superimposed from the master station 2 and transmitted to the slave station 4 at the start of system operation. Further, during the system operation, the first management control data ISTo for instructing to request information and the second management control data IDXo for designating the slave station address are superimposed from the master station 2.
  • the first management monitoring data STi and the second management monitoring corresponding to the first management control data ISTo are transmitted as status data of the electric driver 9 from the slave station 4 specified by the second management control data IDXo.
  • Data IDXi is superimposed.
  • data read by a bar code reader 7 described later is superimposed.
  • the master station input unit 25 includes monitoring signal detection means 35 and monitoring data extraction means 36.
  • the monitoring signal detection means 35 detects the monitoring signal transmitted from the slave stations 4 and 5 via the common data signal lines DP and DN.
  • the monitoring signal data is represented by the presence / absence of a current superimposed on the low potential level area as logic data, and from each of the plurality of slave stations 4 and 5 after the start signal ST is transmitted.
  • the monitor signal is received.
  • the monitoring signal detected by the monitoring signal detection unit 35 is delivered to the monitoring data extraction unit 36.
  • the monitoring data extracting means 36 extracts monitoring data and management monitoring data in synchronization with the timing from the timing generating means 32, and sends it to the input data section as serial input data.
  • the input data unit 26 converts the serial input data received from the monitoring data extracting means 36 into parallel (parallel) data, and sends it to the input unit 12 of the control unit 1 as the monitoring parallel data 14.
  • the slave station 4 includes a transmission receiving means 41, a management control data extracting means 42, an address extracting means 43, a local station address setting means 44, a management monitoring data transmitting means 45, a reference station address setting means 46,
  • a slave station input / output unit 40 having own station control data extraction means 47, reference station control data extraction means 48, input means 50, monitoring data transmission means 51, bar code reader means 52, and electric driver I / F means 80 is provided.
  • the slave station 4 of this embodiment includes an MCU that is a microcomputer control unit as an internal circuit, and this MCU functions as the slave station input / output unit 40.
  • the slave station 4 includes a numeric indicator lamp 49, a slave station line receiver 53, a slave station line driver 54, an AC / DC converter 55, an amplifier 56, an A / D conversion means 57, separately from the slave station input / output unit 40.
  • Current / torque conversion means 58 and contactless power switch 59 are provided.
  • the transmission receiving means 41 receives the transmission signal transmitted to the common data signal lines DP and DN via the slave station line receiver 53, and receives this via the management control data extraction means 42, the address extraction means 43, and the management monitoring data transmission. Delivered to means 45.
  • the management control data extraction unit 42 corresponds to a reception unit that acquires a set value group of the present invention, extracts management control signal data from the management data area of the transmission data signal, and extracts these from the electric driver I / F unit 80. To hand over.
  • the address extracting means 43 counts pulses starting from a start signal ST indicating the start of the transmission data signal. Then, at the timing when the count value coincides with the local station address data set by the local station address setting unit 44, the transmission transmission signal is delivered to the local station control data extraction unit 47 and the monitoring data transmission unit 51 is validated. . Further, the transmission transmission signal is delivered to the reference station control data extraction unit 48 at a timing that matches the reference station address data set by the reference station address setting unit 46.
  • the management monitoring data transmission means 45 counts pulses starting from the start signal ST of the transmission signal, and obtains the timing of the management data area. Then, the management monitoring data transmission means 45 outputs monitoring signals to the common data signal lines DP and DN via the slave station line driver 54 based on the data delivered from the barcode reader means 52.
  • the local station control data extraction unit 47 extracts the control data value transmitted to the local station address set in the local station address setting unit 44 from the transmission transmission signal delivered from the address extraction unit 43, and uses this to extract the control data value. Delivered to the I / F means 80.
  • the reference station control data extracting means 48 extracts the control data value transmitted to the slave stations 4 and 5 set by the reference station address setting means 46 from the transmission transmission signal delivered from the address extracting means 43, and this is extracted. Delivered to the electric driver I / F means 80.
  • the number indicator lamp 49 indicates the remaining number of tightening screws to the operator who operates the electric driver 9 according to the input signal from the electric driver I / F means 80, and the electric driver 9 uses the flashing number. Display that it is a target.
  • the input unit 50 delivers the monitoring data to the monitoring data transmission unit 51 based on the input data from the electric driver I / F unit 80.
  • the monitoring data transmission means 51 outputs a monitoring signal to the common data signal lines DP and DN via the slave station line driver 54 when it is validated by the address extraction means 43.
  • the bar code reader means 52 receives the data of the bar code 72 attached to the tightening target member 71 and the data of the electric driver bar code 74 attached to the electric driver 9 from the bar code reader 7 and receives them from the management monitoring data transmission means. Deliver to 45.
  • a small resistance r that does not affect the operation of the electric driver 9 is inserted in series between the electric driver 9 and the AC power source 10.
  • the AC voltage signal generated at both ends of the small resistor r is converted into a DC signal by the AC / DC converter 55 and amplified by the amplifier 56.
  • the digital signal Id is input to the electric driver I / F unit 80 via the A / D conversion unit 57.
  • the portion from the small resistance r through the AC / DC converter 55, the amplifier 56, and the A / D conversion means 57 to the electric driver I / F means 89 until the digital signal Id is obtained is the detection means of the present invention. Equivalent to. A clamp type current sensor may be used instead of the small resistance r.
  • the value of the digital signal Id output from the A / D conversion means 57 that is, the amplified and digitized current value is supplied to the electric driver I / F means 80 described later via the current / torque conversion means 58.
  • the torque data value converted according to the I / T conversion coefficient K output from the I / T conversion coefficient storage unit 81g is input to the electric driver I / F unit 80.
  • a non-contact power switch 59 is also provided between the electric driver 9 and the AC power source 10, and a power supply circuit from the AC power source 10 (corresponding to the drive power supply path of the present invention) is provided by the electric driver I / F means 80.
  • the electric driver 9 is operated or stopped by turning on / off.
  • the power source of the electric driver 9 is not limited to an AC power source, and a DC power source may be adopted as shown by a broken line in FIG. In that case, the AC / DC converter 55 becomes unnecessary.
  • the electric driver I / F unit 80 corresponds to a storage unit and an arithmetic processing unit of the present invention, and performs arithmetic processing and signal input / output processing necessary for controlling and managing the electric driver 9.
  • the configuration and function of the electric driver I / F unit 80 will be described below together with the operation of this electric driver torque management system with reference to FIGS.
  • FIG. 5 shows the current change when the screw of the electric motor used in the electric driver connected to the slave station 4 with the slave station number 0 is tightened
  • FIG. 6 shows the connection with the slave station 4 with the slave station number 0.
  • movement (idling) of the electric motor currently used for the used electric driver is shown.
  • the electric driver barcode 74 assigned to the electric driver 9 connected to each of the slave stations 4 is read through the barcode reader 7 connected to the slave station 4. Then, the model of the electric driver 9 connected to the slave station 4 is stored for each slave station 4 in the storage means 29 of the management data unit 22 of the master station 2. Similarly, the electric drivers 9 connected to the other slave stations 4 are also stored in the storage means 29 for each.
  • the IDX table is obtained from the data stored in the control unit 1 in advance according to the performance characteristic values of the electric motor corresponding to the model of the electric driver 9. It is formed.
  • IDX table An example of the IDX table is shown in FIG. In this IDX table, IDX address data, setting values, and coefficients are specified for each table number.
  • set values (control variables) corresponding to the performance characteristics of the electric motor used in the electric driver 9 connected to the own station are set as a set value group of common data signal lines DP. , Downloaded from the master station 2 via the DN.
  • Each set value of the set value group downloaded in this embodiment is T / U (shown with torque up omitted, the same applies hereinafter) set value IS, T / U time set value as shown in FIG. TS, normal operation setting YS, life setting value MS, starting current setting value SS, I / T (shown by omitting current / torque; the same applies hereinafter) conversion coefficient K, and screw hole number setting value NS.
  • These downloaded set values are stored in the set value storage means 81 of the electric driver I / F means 80.
  • the storage area of the set value storage unit 81 is shown separately for each set value.
  • the barcode 72 attached to the attachment target member 71 is read by the barcode reader 7 connected to the local station 4 itself. If the completion of the work in the previous process is normal, the screw part shelf lid 6 storing the screws used for the attachment target member 71 is opened, and the instruction lamp 62 that is an instruction for taking out blinks. When the operator who has taken out the predetermined screw turns on the input operation lever 61, the instruction lamp 62 is turned off, the lid 6 is closed, and the removal of the designated screw is completed.
  • Numeral indicator lamp 49 displays based on the signal from subtraction counter 86 as shown in FIG.
  • the subtraction counter 86 outputs a signal for blinking the numeric display lamp 49 when the operation instruction signal j of the own station is input from the own station control data extracting means 47. Accordingly, the blinking of the number indicator lamp 49 indicates that an operation instruction has been given to the electric driver 9 connected to the own station.
  • the electric driver 9 is activated by turning on the operation switch SWd.
  • the non-contact power switch 59 is turned on or off based on a signal from the operation means 91.
  • the operation means 91 turns on the non-contact power switch 59 when the condition establishment signal from the delivery condition means 82 or the local no-load operation instruction signal i from the local station control data extraction means 47 is input. Output a signal.
  • the delivery condition means 82 receives a condition satisfaction signal when the operation instruction signal j of the own station is inputted from the own station control data extracting means 47 and the previous process completion signal k is inputted from the reference station control data extracting means 48. Output to the operating means 91. Therefore, since the electric driver 9 is started by turning on the operation switch SWd only when there is a no-load operation instruction or when the previous process is completed, an erroneous operation by an operator is prevented in advance.
  • the motor current I increases rapidly due to the start current, and then the motor operation Is lowered to a stable state (horizontal state in FIGS. 5 and 6), and the current in that state is continued.
  • a period until the motor operation is in a stable state is referred to as a startup period.
  • the starting current set value SS which is a threshold of the starting current and the motor current I delivered from the A / D conversion unit 57 are detected.
  • the start detection means 83 compares the data value of the digital signal Id proportional to.
  • the start detection means 83 obtains a start signal in a period in which the data value of the digital signal Id proportional to the motor current I is equal to or greater than the start current set value SS in the start period. Then, as shown in FIG. 5, the operation signal is output to the elapsed time comparing means 88 and the T / U time comparing means 90 from the falling edge of the start signal.
  • the U set value IS and the normal operation set value YS are shown in association with the motor current Id and the life set value MS in FIG. 5 and 6 relate to the slave station with the slave station number 0, and are displayed in a form with the slave station number 0 added like SS0. The same applies to other setting values and measurement values.
  • the motor current Id is in a stable state while the screw tightening is in progress.
  • the tightening torque increases and the motor current Id increases rapidly (torque up).
  • the electric driver I / F means 80 obtains a torque value obtained by converting the motor current Id in accordance with the I / T conversion coefficient K from the current / torque conversion means 58, and the torque value is passed through the tightening means 84 described later.
  • the T / U set value IS delivered from the T / U set value storage means 81d is compared with the T / U comparison means 87.
  • T / U comparison means 87 when the torque value delivered from the current / torque conversion means 58 reaches the T / U set value IS delivered via the tightening means 84, a completion signal is sent to the subtraction counter 86, It outputs to the T / U time comparison means 90 and the operation means 91. Further, the data value at that time is delivered to the input means 50 as a T / U value (data indicated by c in FIGS. 4 and 8).
  • the operation means 91 having obtained the completion signal turns off the non-contact power switch 59, and the electric driver 9 is in an operation stop state. That is, when the torque is increased, the electric driver 9 can be brought into an operation stopped state. Note that the operating means 91 also turns off the non-contact power switch 59 and puts the electric driver 9 in a non-operating state even when operation error data d described later is “1”.
  • the T / U time comparison means 90 that has obtained the completion signal has the T / U time setting passed from the T / U time setting value storage means 81e at the timing when the completion signal is obtained. Compare with value TS. If the measurement time is within a predetermined allowable range including the T / U time set value TS, a normal (“0”) value and an abnormal (“1”) value outside the range are set as T / U. As time error data (data indicated by a in FIGS. 4 and 8), it is delivered to the input means 50. Further, the data value at that time is transferred to the input means 50 as T / U time value data (data indicated by b in FIGS. 4 and 8).
  • the subtraction counter 86 that has obtained the completion signal sets the screw hole number setting value NS delivered from the screw hole number setting value storage means 81c as an initial value, and subtracts the number of screw holes every time a completion signal is obtained, and becomes a work target.
  • the remaining number of screw holes is handed over to the number indicator lamp 49. Further, when the remaining number of screw holes becomes 0, the work completion status data (data indicated by h in FIGS. 4 and 8) “1” is delivered to the input means 50.
  • the additional tightening means 84 can be switched between the valid state and the invalid state by the additional tightening switch SWm.
  • the T / U set value IS delivered from the T / U set value storage unit 81d is delivered to the T / U comparison unit 87 without being changed.
  • a value obtained by appropriately increasing the T / U set value IS is delivered to the T / U comparison means 87.
  • the torque value (torque-up value) when the screw is seated in the screw hole 73 is increased and can be tightened.
  • the surplus with respect to the T / U set value IS is 10%, but the ratio is not limited and may be set according to the use situation.
  • the electric driver I / F unit 80 also detects an error due to a screw selection error or a screw arrangement error from the torque value in a stable state after a predetermined time has elapsed since the start of the electric driver 9.
  • the elapsed time comparing means 88 measures the time from the rise of the operation signal with a timer using the operation signal as a trigger signal.
  • a predetermined time based on the T / U time set value TS delivered from the T / U time set value storage means 81e reaches TS / 2
  • the trigger signal is sent to the normal operation comparison means 85. Output.
  • the torque value delivered from the current / torque conversion means 58 is compared with the normal operation set value YS delivered from the normal operation set value storage means 81b.
  • the torque value delivered from the current / torque conversion unit 58 is a predetermined allowable value including the normal operation set value YS. If it is within the range, the value of normal (“0”), and if it is out of the range, the value of abnormal (“1”) is transferred to the input means 50 as operation error data (data indicated by d in FIGS. 4 and 8). Further, the data value at that time is transferred to the input means 50 as operation T value data (data indicated by e in FIGS. 4 and 8).
  • the screw diameter is small, or the screw is arranged obliquely, and the screw is in an adapted state. Means not.
  • the operation means 91 turns off the non-contact power switch 59 as described above, and the electric driver 9 enters an operation stop state. That is, the electric driver 9 can be stopped when an abnormality occurs such as the idling of the screw or the screw not being in a suitable state.
  • the electric driver I / F unit 80 when a no-load operation (idling operation) is performed without performing a screw tightening operation, the torque value in a stable state after a predetermined time exceeding the T / U time setting time has elapsed. Thus, the life detection of the mechanical parts of the electric driver 9 is performed.
  • a trigger signal is output to the life comparison means 89.
  • the torque value delivered from the current / torque conversion means 58 is compared with the life set value MS delivered from the life set value storage means 81f.
  • the trigger signal (2TS timing signal) from the elapsed time comparison unit 88 is valid, the torque value delivered from the current / torque conversion unit 58 exceeds the predetermined allowable value range including the life set value MS. If it is within the range, the value of normal (“0”) is passed to the input means 50 as life error data (data indicated by f in FIGS. 4 and 8). Further, the data value at that time is transferred to the input means 50 as life T value data (data indicated by g in FIGS. 4 and 8).
  • the torque value at the timing 2TS is a value larger than the lifetime setting value MS (m0h in FIG. 6), it means that the lifetime of the mechanical component or the like is approaching.
  • the electric driver 9 is also changed according to the state of the previous process related to other devices based on the reference station control data delivered from the reference station control data extracting unit 48. Is in an operable state or inoperable state.
  • the delivery condition means 82 Is output to the operating means 91. Then, the contactless power switch 59 is turned on, and the electric driver 9 for tightening the screw is made operable.
  • the delivery condition unit 82 does not output a condition satisfaction signal to the operation unit 91. Then, the non-contact power switch 59 is turned off, and the electric driver 9 for performing the screw tightening is made inoperable, thereby preventing erroneous use for other screw tightening.
  • the delivery condition means 82 outputs a condition satisfaction signal. Output to the operating means 91. Then, the contactless power switch 59 is turned on, and the electric driver 9 for tightening the screw is made operable.
  • the delivery condition unit 82 does not output a condition satisfaction signal to the operation unit 91. Then, the non-contact power switch 59 is turned off, and the electric driver 9 of the own station is made inoperable, so that the wrong order can be prevented.
  • the data shown in the table of FIG. 8 delivered from the electric driver I / F unit 80 to the input unit 50 is output to the common data signal lines DP and DN via the monitoring data transmission unit 51. These data are acquired by the master station 2 via the common data signal lines DP and DN, and the table data shown in FIG. 8 is formed.
  • the control unit 1 can perform history management in combination with time stamp data based on the table data formed in the master station 2. That is, it is possible to manage the history of work data including a torque value at the time of screw tightening work on the mounting target member 71 that has been completed.
  • a plurality of slave stations 4 and 5 are connected to the common data signal lines DP and DN, and data is exchanged by the transmission synchronization method, but the data exchange method is not limited.
  • data may be exchanged with a plurality of slave stations connected by a transmission line by a command method.
  • a plurality of slave stations may be connected to a master station paired with each slave station without being connected by a transmission line, and the master station and the slave station may directly exchange data on a one-to-one basis.
  • the system in this case is configured by a plurality of sets of a master station and a slave station.

Abstract

L'invention concerne un système de gestion de visseuse électrique dans lequel une pluralité de stations esclaves susceptibles d'échanger des données avec une station maître sont respectivement connectées à une pluralité de visseuses électriques. Les stations esclaves comprennent : un moyen de réception destiné à obtenir un groupe de valeurs de consigne depuis la station maître, le groupe de valeurs de consigne comprenant au moins une valeur de consigne qui est préétablie en conformité avec une caractéristique de performance d'un moteur électrique utilisé dans la visseuse électrique ; un moyen de stockage pour le groupe de valeurs de consigne ; un moyen de détection qui acquiert un signal électrique qui change en conformité avec un couple de sortie de la visseuse électrique ; un moyen de traitement de calcul qui réalise une opération de comparaison entre une valeur calculée acquise sur la base d'une valeur du signal électrique et une valeur de consigne obtenue au préalable ; et un commutateur qui connecte et déconnecte électriquement un circuit d'alimentation de commande à la visseuse électrique sur la base d'un résultat de sortie provenant du moyen de traitement de calcul. Au moins une valeur de consigne T/U, correspondant à une valeur de couple lorsqu'une vis en cours de vissage par la visseuse électrique est fixée dans un trou de vis, est incluse dans le groupe de valeurs de consigne, le circuit d'alimentation de commande étant déconnecté lorsque la valeur calculée atteint la valeur de consigne T/U.
PCT/JP2014/074382 2014-09-16 2014-09-16 Système de gestion de visseuse électrique WO2016042597A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2016514191A JP6038396B2 (ja) 2014-09-16 2014-09-16 電動ドライバ管理システム
PCT/JP2014/074382 WO2016042597A1 (fr) 2014-09-16 2014-09-16 Système de gestion de visseuse électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2014/074382 WO2016042597A1 (fr) 2014-09-16 2014-09-16 Système de gestion de visseuse électrique

Publications (1)

Publication Number Publication Date
WO2016042597A1 true WO2016042597A1 (fr) 2016-03-24

Family

ID=55532668

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2014/074382 WO2016042597A1 (fr) 2014-09-16 2014-09-16 Système de gestion de visseuse électrique

Country Status (2)

Country Link
JP (1) JP6038396B2 (fr)
WO (1) WO2016042597A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019067265A (ja) * 2017-10-03 2019-04-25 マクセル株式会社 加工器具情報管理装置、蓄電装置、加工機器、電動工具及び加工機器管理装置
WO2021235041A1 (fr) * 2020-05-20 2021-11-25 オムロン株式会社 Dispositif de détermination de défaut de vissage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3032783U (ja) * 1996-06-24 1997-01-10 株式会社東日製作所 半自動形ねじ締め機
JP2002018744A (ja) * 2000-06-30 2002-01-22 Makita Corp 電動工具及び電動工具管理システム
JP2002096271A (ja) * 2000-09-14 2002-04-02 Uryu Seisaku Ltd 電動モータにより駆動される油圧式トルクレンチの駆動制御方法
JP2005254400A (ja) * 2004-03-12 2005-09-22 Makita Corp 締付工具
JP2010099765A (ja) * 2008-10-22 2010-05-06 Hitachi Ltd 電動ドライバー、ネジ締め状況判定方法及びネジ締め判定システム

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4907985A (en) * 1989-06-26 1990-03-13 Johnsen Cary T Safety twist lock connector for an extension power cord
JP4823499B2 (ja) * 2004-07-23 2011-11-24 勝行 戸津 ブラシレスモータ駆動回転工具の制御方法
AU2010364000B2 (en) * 2010-11-15 2017-02-02 HYTORC Division Unex Corporation Drive unit for a power operated tool
JP5965694B2 (ja) * 2012-03-29 2016-08-10 株式会社バンガードシステムズ ねじ締め装置および制御方法
JPWO2015045871A1 (ja) * 2013-09-25 2017-03-09 勝行 戸津 自動ねじ締め制御および管理方法並びにシステム

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3032783U (ja) * 1996-06-24 1997-01-10 株式会社東日製作所 半自動形ねじ締め機
JP2002018744A (ja) * 2000-06-30 2002-01-22 Makita Corp 電動工具及び電動工具管理システム
JP2002096271A (ja) * 2000-09-14 2002-04-02 Uryu Seisaku Ltd 電動モータにより駆動される油圧式トルクレンチの駆動制御方法
JP2005254400A (ja) * 2004-03-12 2005-09-22 Makita Corp 締付工具
JP2010099765A (ja) * 2008-10-22 2010-05-06 Hitachi Ltd 電動ドライバー、ネジ締め状況判定方法及びネジ締め判定システム

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019067265A (ja) * 2017-10-03 2019-04-25 マクセル株式会社 加工器具情報管理装置、蓄電装置、加工機器、電動工具及び加工機器管理装置
WO2021235041A1 (fr) * 2020-05-20 2021-11-25 オムロン株式会社 Dispositif de détermination de défaut de vissage

Also Published As

Publication number Publication date
JPWO2016042597A1 (ja) 2017-04-27
JP6038396B2 (ja) 2016-12-07

Similar Documents

Publication Publication Date Title
US10386816B2 (en) Manufacturing management system for changing abnormality detection condition according to manufacturing period-of-time information
US20170146602A1 (en) System and Method for Testing Alternator Default Mode Operation
US8161613B2 (en) Method and device for producing screw connections
WO2008101408A1 (fr) Procédé de commande d'un outil électrique et outil électrique réalisant le procédé de commande
JP6038396B2 (ja) 電動ドライバ管理システム
US20160311653A1 (en) Safety system for an elevator installation
US11512810B2 (en) Automatic lubricator for lubricating an object
JPWO2018042982A1 (ja) 故障診断システム及び管理システム
WO2015045871A1 (fr) Procédé et système de commande et de gestion de serrage automatique de vis
CN108237439A (zh) 学习模型构筑装置以及过热预测装置
EP3600772A1 (fr) Clé dynamométrique et procédé de serrage commandé de raccords filetés à l'aide d'une clé dynamométrique
JP6038397B1 (ja) 電動ドライバ管理システム
DE102018007905A1 (de) Arbeitsspindel mit Sensoren und Verfahren zur Erfassung und Überwachung ihrer Historie
US10879831B1 (en) Method and system for real-time anomaly detection in a motor drive
CN104137370A (zh) 电机保护和控制装置、系统和/或方法
ITRN20070007A1 (it) Dispositivo portatile di assistenza tecnica di un elettrodomestico
JP5964521B2 (ja) 電動ドライバ用トルク管理システム
KR101701315B1 (ko) 전자식 팽창밸브 고장진단 장치
EP1942449A4 (fr) Systeme et procede de gestion de travaux, serveur de stockage et terminal
JP4711168B2 (ja) 生産設備管理システム
US10063165B2 (en) Method and apparatus for the detection of the position of an operating switch for starting an electric motor
JP2008133735A (ja) 電子式制御ユニット
JP5361873B2 (ja) 電気コンポーネントの状態を内燃機関のエンジン制御装置にフィードバックするための方法およびシステム
CN104669186A (zh) 螺丝刀操控方法、装置及螺丝刀
JP3215326U (ja) 自動ねじ締め制御および管理システム

Legal Events

Date Code Title Description
ENP Entry into the national phase

Ref document number: 2016514191

Country of ref document: JP

Kind code of ref document: A

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14901833

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14901833

Country of ref document: EP

Kind code of ref document: A1