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WO2019189291A1 - Procédé, dispositif, programme et système de gestion de formation de fermeture hermétique - Google Patents

Procédé, dispositif, programme et système de gestion de formation de fermeture hermétique Download PDF

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Publication number
WO2019189291A1
WO2019189291A1 PCT/JP2019/013067 JP2019013067W WO2019189291A1 WO 2019189291 A1 WO2019189291 A1 WO 2019189291A1 JP 2019013067 W JP2019013067 W JP 2019013067W WO 2019189291 A1 WO2019189291 A1 WO 2019189291A1
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WO
WIPO (PCT)
Prior art keywords
tightening
axial force
bolt
torque
construction management
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2019/013067
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English (en)
Japanese (ja)
Inventor
雅之 山邊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valqua Ltd
Original Assignee
Valqua Ltd
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 Valqua Ltd filed Critical Valqua Ltd
Priority to KR1020207023307A priority Critical patent/KR102641050B1/ko
Priority to CN201980021775.8A priority patent/CN111902243B/zh
Priority to JP2020510982A priority patent/JP7354093B2/ja
Priority to SG11202007932PA priority patent/SG11202007932PA/en
Publication of WO2019189291A1 publication Critical patent/WO2019189291A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
    • B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
    • B23P19/06—Screw or nut setting or loosening machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P21/00—Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
    • 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

Definitions

  • the present invention relates to a seal construction management technique used for tightening a flange for connecting piping, valves, pumps, and the like.
  • a flange sandwiching a gasket is used for pipe connection and connection of a pump to the pipe.
  • This flange is fastened by tightening bolts and nuts at tightening points set at a plurality of locations on the peripheral side.
  • a manual tightening tool such as a torque wrench or an electric screw tightening tool is used.
  • tightening bolts and nuts to such flanges it is necessary to perform tightening processing at a predetermined torque value at all tightening locations and tighten without causing variations in the axial force acting on the bolts. Therefore, it is important to manage the tightening state of the bolt and nut by the tightening tool.
  • Tightening management methods include, for example, a torque method for managing the tightening torque applied to the bolt, a method for managing the axial force by measuring the elongation of the bolt with an ultrasonic axial force meter, pulling the bolt to the target axial force, and a nut
  • a torque method for managing the tightening torque applied to the bolt a method for managing the axial force by measuring the elongation of the bolt with an ultrasonic axial force meter, pulling the bolt to the target axial force, and a nut
  • a method such as a bolt tensioner (tensile method) that tightens the bolt while controlling the axial force by seating and tightening.
  • the rotational speed and torque of the bolt output shaft are electrically detected by a detector, and the detected values are broken down into momentary rotational speeds and torque values with respect to the elapsed tightening time, and the minute intervals. It is known that the output shaft power for each minute time is approximated to the output torque by calculating the power value of the power wrench and by instantaneously increasing / decreasing the rotational speed equivalent of the power wrench according to the state of the tightening variable load. (For example, Patent Document 1).
  • a predicted axial force is calculated by using a relational expression that expresses a ratio of an axial force at the time of completion of tightening of the screwed member and an axial force after the lapse of a predetermined time as a function of time required for tightening.
  • a relational expression that expresses a ratio of an axial force at the time of completion of tightening of the screwed member and an axial force after the lapse of a predetermined time as a function of time required for tightening.
  • the flange connection which sandwiched the gasket needs to maintain the flanges in parallel by equalizing the tightening axial force of all the bolts and nuts.
  • the flange connection for tightening a plurality of bolts and nuts if the axial force acting on the bolts varies, an inclination occurs between the flanges. This is a so-called single-tightening state.
  • Tightening management by the torque method manages the tightening torque applied by tightening bolts and nuts.
  • the torque coefficient which is the proportional coefficient between the tightening torque and the axial force acting on the bolt, is the friction coefficient against the flange and nut.
  • the torque coefficient is the proportional coefficient between the tightening torque and the axial force acting on the bolt.
  • an object of the present invention is to enable bolts and nuts to be tightened with a small number of man-hours and time, and to realize flange connection with high tightening accuracy.
  • Another object of the present invention is to stabilize the tightened state of the flange and tighten with a necessary axial force by adding a tightening torque according to the state of each bolt and nut.
  • one aspect of the seal construction management method of the present invention is a seal construction management method in which a plurality of tightening points are set on a flange sandwiching a gasket, and a bolt and a nut are provided at each tightening point. Then, a step of tightening the bolt and the nut with a tightening tool for which a first tightening torque value is set, a step of detecting an axial force of the bolt, and a torque coefficient of the bolt using the detected axial force And a step of setting a second tightening torque value calculated or selected using the torque coefficient in the tightening tool for each tightening portion of the bolt.
  • a step of comparing the detected axial force of the bolt with a target axial force, a set axial force, or a predetermined threshold, and calculating or selecting the torque coefficient based on the comparison result. May include.
  • the seal construction management method may further include a step of calculating or selecting the first tightening torque value using a set axial force set for each tightening step and a torque coefficient selected in advance. .
  • one aspect of the seal construction management device of the present invention is a seal construction management device in which a plurality of tightening points are set on a flange sandwiching a gasket, and each tightening point is provided with a bolt and a nut.
  • the axial force of the bolt to be tightened is acquired, the torque coefficient of the bolt is calculated or selected using the axial force, and the torque coefficient is calculated or selected for each tightening portion of the bolt.
  • control unit compares the detected axial force of the bolt with a target axial force, a set axial force, or a predetermined threshold value, and calculates the torque coefficient based on the comparison result. Or may be selected.
  • the seal construction management device further includes a detecting means for detecting either or both of the number of times of the tightening tool or the tightening position, and the control means is stepwise or according to the number of times of the tightening or the tightening position.
  • the set axial force or the tightening torque value set for the tightening tool may be varied continuously.
  • one aspect of the seal construction management program of the present invention is a seal construction management program for realizing by a computer, and tightening a bolt and a nut attached to a tightening portion of a flange sandwiching a gasket
  • one aspect of the seal construction management system of the present invention is a seal construction management system in which a plurality of tightening points are set on a flange sandwiching a gasket, and each tightening point is provided with a bolt and a nut.
  • a tightening tool capable of controlling a torque value applied to the bolt or the nut, a sensor for detecting an axial force of the bolt, a first tightening torque value set in the tightening tool, and the shaft detected by the sensor.
  • a controller that calculates or selects a torque coefficient of the bolt using force, and sets a second tightening torque value calculated or selected using the torque coefficient in the tightening tool for each tightening portion of the bolt; Is provided.
  • A is a figure which shows the structural example of a clamping tool
  • B is a figure which shows an example of an axial force sensor
  • A is a figure which shows the structural example of a controller
  • B is a figure which shows the structural example of a memory
  • It is a figure which shows the internal structural example of a server.
  • FIG. 1 shows a configuration example of a seal construction management apparatus according to the first embodiment.
  • the configuration illustrated in FIG. 1 is an example, and the present invention is not limited to such a configuration.
  • ⁇ Seal construction management device 2> This seal construction management device 2 performs tightening processing and tightening management of a plurality of bolts 6 and nuts 8 of a seal construction section 4 that connects a plurality of pipe lines, pipes and valves, pipes and pumps, and the like.
  • the seal application unit 4 includes a gasket 12 sandwiched between flanges 10-1 and 10-2 as connection means, and the periphery of the flanges 10-1 and 10-2.
  • the gasket 12 is made of a rigid resin material, contacts at least the facing surfaces of the flanges 10-1 and 10-2, and does not overlap a flow path formed in a connected object other than a flange such as a pipe. It is formed into a shape.
  • the gasket 12 is an example of a sealing means that prevents the outflow of fluid or the like from the periphery of the connected portion of the object to be connected by being brought into a crimped state with the flanges 10-1 and 10-2 by tightening the bolt 6 and the nut 8. is there.
  • the seal construction management device 2 manages the tightening of the bolts 6 and nuts 8 as the seal construction management, so that the gasket 12 between the flanges 10-1 and 10-2 is pressed in a uniform or near state. To do.
  • the seal construction management device 2 includes, for example, a tightening tool 14 and a control unit 16.
  • the tightening tool 14 is an example of a means for applying an output torque T to be applied to the bolt 6 or the nut 8 and includes, for example, a nut runner and an electric tool having a function capable of setting and adjusting the output torque (tightening torque T). It is.
  • the tightening tool 14 is carried, for example, by the operation of an operator who performs tightening processing, and can be turned on / off during tightening, or installed or gripped on an arm of a product assembly device (not shown). There is also.
  • the tightening tool 14 includes, for example, a grip 22 that enables the apparatus main body 20 to be held and moved to a predetermined position, a socket 24 that is fitted to the nut 8 to be tightened and applies a tightening torque, and a tightening torque through the socket 24 in the tightening process.
  • a trigger switch 26 for turning T on and off is provided. In the tightening process of the bolt 6 and the nut 8, the trigger switch 26 is switched on / off using the operator's finger, a manipulator (not shown), or a switch circuit.
  • an operator or an assembling apparatus arranges the tightening tools 14 in the set order with respect to the tightening points set in the seal application section 4, that is, the positions where the bolts 6 and the nuts 8 are installed.
  • the trigger switch 26 is turned ON / OFF.
  • the control unit 16 is an example of a unit that outputs an operation instruction of the tightening tool 14 and performs an adjustment process of the tightening torque value T1 set in the tightening tool 14 from the tightening state of the bolt 6 and the nut 8.
  • the control means 16 is configured by, for example, a computer and may be configured integrally with the tightening tool 14 or may be an independent device and connected to the tightening tool 14 by wire or wirelessly. Further, the control means 16 is connected to axial force sensors 18-1, 18-2,..., 18-n (n is a natural number), and the value of the axial force due to tightening or the change in axial force due to tightening, etc. To get.
  • the axial force sensors 18-1, 18-2, 18-3,..., 18-n are examples of means for detecting the axial force acting on the bolt 6 or the nut 8, and are installed at all tightening points.
  • the bolt 6 or the nut 8 is installed.
  • the axial force sensors 18-1, 18-2, 18-3,..., 18-n may be installed at the time of measuring the axial force, for example.
  • the control means 16 of the seal construction management device 2 having such a configuration has the following functions, for example. a. A function for calculating or selecting a tightening torque value T1 to be applied to the bolt 6 or the nut 8 in accordance with the set torque coefficient k1 and the number of times S of tightening points. b. A function of setting a tightening torque value T1 to the tightening tool 14. c. A function of changing the tightening torque value T1 of the tightening tool 14 stepwise or continuously in accordance with the number of times S (STEP). This number S of rounds is the number of units that circulate around the positions P1, P2,. d.
  • the tightening torque value T1 of the function a is a tightening torque value calculated using, for example, a target axial force value.
  • This tightening torque value T1 is calculated as a level value required to reach the target axial force F according to the tightening conditions including the gasket 12.
  • T kFd / n (1)
  • d is the outer diameter of the bolt 6 to be tightened
  • n is the number of bolts 6 or nuts 8 installed in the seal construction part 4.
  • K is a torque coefficient representing a proportional coefficient between the tightening torque T and the tightening force (axial force F). For example, as shown in FIG.
  • the axial force F of the bolt 6 and the nut 8 corresponds to the flanges 10-1 and 10-2 and the seat surface of the bolt 6 or the nut 8 against the tightening torque T applied from the tightening tool 14.
  • the frictional force N1 and the frictional force N2 of the screw surface are affected.
  • the tightening axial force F is affected by the surface roughness of the screw. That is, the axial force F acting on the bolt 6 and the nut 8 varies depending on the tightening location even if the tightening is performed with the same tightening torque value T1.
  • the torque coefficient k set in consideration of such influences varies depending on the tightening point P for each bolt 6 or nut 8. In the calculation of the tightening torque value T1 at the start of seal construction, for example, the torque coefficient k1 for all tightening points P is set to a constant value of 0.2.
  • the calculated torque value T1 is set in the tightening tool 14 as control information for the tightening tool 14 from the control means 16.
  • control means 16 performs tightening by changing the tightening torque value T1 by the tightening tool 14 stepwise or continuously in accordance with the number of tightening cycles S. Thereby, the axial force of the bolt 6 or the nut 8 at each tightening point P is made to reach the target axial force F.
  • the control means 16 acquires the axial force F detected from the axial force sensors 18-1, 18-2,..., 18-n corresponding to the tightening point P, for example.
  • the detected axial force F may be acquired every time when tightening is performed, or may be acquired when a predetermined number of rounds S is tightened.
  • the control means 16 calculates the correction
  • control means 16 uses the corrected torque coefficient k2 and the target axial force to calculate a tightening torque value T2 corrected based on the equation (1) and set it in the tightening tool 14.
  • FIG. 3 shows an example of the detected axial force during the tightening process.
  • the control means 16 manages, for example, the axial force detected at the tightening point P, and notifies the operator and work manager of the tightening by the display means (not shown) of the management result.
  • this tightening result F ⁇ for example, the detected axial forces at the tightening points [1] to [5] and [8] have the same value, but the tightening result F ⁇ 1 at the tightening point [7] is small.
  • FIG. 3B is an example of an axial force detection result when tightening is performed by setting a correction torque coefficient k2 corresponding to each tightening location.
  • the values of the tightening results F ⁇ 1 and F ⁇ 2 at the tightening locations [7] and [6] are equal to the detected axial force values at the other tightening locations.
  • FIG. 4 shows an example of seal construction management processing.
  • the processing procedures and processing contents shown in FIG. 4 are examples of the seal construction management method or the seal construction management program of the present invention, and the present invention is not limited to such contents.
  • the control means 16 calculates or selects the first tightening torque value T1 using the target axial force or the set axial force and the first torque coefficient k1 as the seal construction management process (S1).
  • a tightening torque value T1 of 1 is set in the tightening tool 14 (S2).
  • the target axial force is a target value of the axial force F acting on the bolt 6 or the nut 8 when the tightening is completed.
  • the set axial force is a value of the axial force F that is set when the tightening torque value T1 is calculated when the tightening torque value T1 for the bolt 6 and the nut 8 is changed in a stepwise manner according to the number of times S. Depending on the number S, x [%] of the target axial force and the like are set.
  • the tightening torque value T1 may be set by selecting a value stored in advance in a database or the like, for example.
  • the control means 16 acquires the detection result of the axial force from the axial force sensors 18-1, 18-2, ..., 18-n (S3), and compares the detection result with the target axial force or the set axial force ( S4). This axial force is compared for each tightening point. If the detected result has a difference from the target axial force or the set axial force (YES in S5), a corrected torque value k2 that is a second torque coefficient is calculated using the value of the detected axial force F (S6). .
  • the control means 16 calculates the tightening torque values T1 and T2 using the respective torque coefficients for each tightening location, sets them in the tightening tool 14 (S8), and proceeds to the next tightening sequence.
  • the detected axial force is compared with the target axial force or the set axial force, and the case where the torque coefficient is corrected when there is a difference is shown.
  • the second torque coefficient k2 may be calculated based on the axial force detected at all tightening locations.
  • the detected axial force comparison process is not limited to the target axial force or the set axial force, for example, and may be compared with a predetermined threshold value set in advance.
  • the flanges 10-1, 10 can be used regardless of the operator's experience and intuition. -It is possible to manage the sealing work according to the condition of the gasket 12, the bolt 6 and the nut 8.
  • FIG. 5 shows a configuration example of a seal construction management device according to the second embodiment.
  • the configuration shown in FIG. 5 is an example, and the present invention is not limited to such a configuration.
  • the seal construction management device 30 includes a tightening tool 14, a control unit 16, and a tightening condition setting unit 32.
  • the control means 16 includes an acquisition means 34 for taking in the detection results of axial force sensors 18-1, 18-2,..., 18-n installed on either one or both of the bolt 6 and the nut 8, for example.
  • This acquisition means 34 includes, for example, communication means for wirelessly connecting to the axial force sensors 18-1, 18-2,..., 18-n, a connection interface for connecting by wire, etc.
  • the tightening condition setting unit 32 grasps the tightening position and the number of rotations in tightening work in addition to the function of setting the tightening torque values T1 and T2 set by the control means 16 to the tightening tool 14, for example. By doing so, it has a function of managing the seal construction for the worker.
  • the tightening condition setting unit 32 may be configured integrally with the control unit 16, for example, or may be a separate body connected by wire or wireless. Further, the tightening condition setting unit 32 may include a function for calculating tightening torque values T1 and T2, for example.
  • the tightening tool 14 and the seal construction unit 4 only need to have the same configuration as that of the first embodiment, and the description thereof is omitted.
  • FIG. 6 shows an example of a bolt and nut tightening procedure.
  • the positions P1, P2,..., Pn may be circulated by a so-called “diagonal tightening” tightening procedure that changes the tightening location in the diameter direction of the flanges 10-1, 10-2. That is, the positions P1, P2,..., Pn may be tightened continuously in numerical order, or a predetermined number of the tightening points may be skipped regularly for circulation.
  • the number of times S is not limited to the count value of the cycle in which the positions P1, P2,..., Pn are sequentially continued, and may be a count value counted in units of cycles where a predetermined position is skipped.
  • a tightening procedure based on a Japanese Industrial Standard (JIS) flange joint tightening method JIS B 2251 is employed.
  • JIS B 2251 Japanese Industrial Standard
  • the positions P1, P2,..., Pn are set in the diameter direction of the flanges 10-1, 10-2 at the so-called “temporary tightening” stage from the beginning of tightening to the predetermined number of rounds (S). Tightening is performed by so-called “diagonal tightening” (B in FIG. 6) that changes the tightening location. Further, in the tightening process, after the number of times of “temporary tightening” (S) is completed, as a so-called “main tightening” stage, P2 to Pn are sequentially cycled (A in FIG. 6) to perform tightening. It should be noted that the number of times (STEP) of the “temporary tightening” and “main tightening” and the tightening procedure may be set differently depending on the number of bolts 6 installed on the flanges 10-1 and 10-2.
  • FIG. 7 shows an example of the tightening instruction information table.
  • the tightening instruction information table 40 is an example of a table in which processing details of seal construction management are stored, and is stored in the control unit 16, for example.
  • the tightening instruction information table 40 stores, for example, information on “execution contents” for each “STEP” representing the number of times of travel, information on a “procedure” for tightening, and the like.
  • a torque coefficient is calculated in STEP 3 and STEP 7, and the torque coefficient is corrected in accordance with the state of the tightening portion.
  • the information of “implementation content” includes, for example, a tightening torque value and a torque coefficient value, and also includes a detected axial force take-in instruction and a torque coefficient calculation instruction.
  • a method of tightening the bolt 6 and the nut 8 is stored.
  • FIG. 8 shows an example of the detection result of the axial force.
  • the control means 16 is provided with an information table including the value of the axial force F of each tightening location acquired from the axial force sensors 18-1, 18-2,.
  • the information table shown in FIG. 8 shows, for example, axial force detection and tightening torque values and torque coefficient calculation results in the number of cycles (S) for calculating the correction value of the torque coefficient k, and the tightening torque value set for the tightening tool 14.
  • T1 set axial force Fx applied to the bolt 6 or nut 8
  • the tightening torque value T1 is a value calculated based on the above-described equation (1) using the set axial force Fx and the torque coefficient k1 set by the number of cycles. For example, as a seal construction management process, the control means 16 compares the set axial force Fx with the axial force F when tightened with the tightening torque value T1, and these values match or are equal to the set axial force Fx. If it is not within the predetermined range, a correction torque coefficient k2 is calculated. Then, the control means 16 sets a correction torque value T ′ to be set in the tightening tool 14 in the next number of rounds for the comparison result of the axial force. Note that the information table may be created, for example, for each number of tightening rounds, or may be created only for the number of rounds (S) for correcting the torque coefficient.
  • FIG. 9 shows an example of the calculation result of the torque coefficient.
  • the control means 16 generates a torque coefficient display screen associated with the tightening location in response to the torque coefficient calculation process.
  • This torque coefficient display screen may be displayed, for example, on a display unit of the control means 16 (not shown), or may be displayed on a terminal device for an administrator using communication or an external memory.
  • FIG. 10 shows an example of seal construction management processing.
  • the processing procedure and processing content shown in FIG. 10 are examples of the seal construction management method or seal construction management program of the present invention, and the present invention is not limited to such content.
  • initial setting of the control means 16 is performed (S11), and the tightening tool 14 is set (S12).
  • These setting steps include calculation of the tightening torque value T1 for each number of rotations based on the set torque coefficient k1 and the set axial force Fx, input processing to the tightening tool 14 through the tightening condition setting unit 32, and the like.
  • the control means 16 acquires the detection result F of the axial force detected by each axial force sensor 18-1, 18-2,..., 18-n (S13), and determines the tightening point P and the number of cycles (S). Confirm (S14).
  • each tightening point P is specified by the number of eight bolts 6 at eight tightening points P1 to P8 and the change of the detected axial force.
  • the number of cycles (S) is specified by the number of times that the same bolt 6 is tightened once, for example, by tightening eight bolts 6.
  • the control means 16 determines whether or not the number of rounds (S) has become the torque coefficient calculation step (S15), and in the case of the calculation step (YES in S15), the comparison between the detected axial force F and the set axial force Fx, and The correction torque coefficient k2 for each bolt 6 is calculated (S16).
  • the control means 16 associates the calculated correction torque coefficient k2 with each bolt 6 (S17), and uses the associated bolt coefficient k2 in the next calculation of the tightening torque value T.
  • the control unit 16 determines that the number of rounds (S) is not the torque coefficient calculation step (NO in S15)
  • the control unit 16 returns to S12, counts up the number of rounds (S), and the axis corresponding to the number of rounds (S). Tightening processing is performed by setting the force F or the tightening torque value.
  • FIG. 11 shows a configuration example of a seal construction management system according to the third embodiment.
  • the configuration shown in FIG. 11 is an example, and the present invention is not limited to such a configuration.
  • the seal construction management system 50 includes a tightening tool 14, a controller 52, and a server 54. Since the tightening tool 14 is the same as the structure described above, its description is omitted.
  • the controller 52 is connected to the tightening tool 14 with a cable 55.
  • the controller 52 and the tightening tool 14 may be connected by, for example, Wi-Fi or infrared communication.
  • the controller 52 is, for example, a computer that sets a tightening torque value T for the tightening tool 14 and has a function of a control means for managing a tightening state and a tightening condition setting unit. Operate.
  • the controller 52 includes, for example, a plurality of input operation units 58 and a display unit 60 on the front panel unit 56.
  • the controller 52 realizes the following functions and effects by computer processing. a. Calculate or select the torque value T to be applied to the bolt 6 or nut 8 according to the number of times (S) of tightening points or the tightening point P. b. Setting the torque value T to the tightening tool c. Change of the output torque T of the tightening tool 14 stepwise or continuously in accordance with the number of cycles (S) or the tightening point P. d. Acquisition of tightening management information from server 54 e. Acquisition of flange information of flanges 10-1 and 10-2 f. Acquisition of gasket information for gasket 12 g. Check gasket information h. Selection of tightening conditions from tightening condition information and input to the tightening tool 14 i.
  • the controller 52 is linked to the server 54 in a wired or wireless manner as a communication medium 62 indicated by a broken line.
  • the server 54 is a computer that supports the information processing of the controller 52 or manages the information processing. For example, a personal computer may be used.
  • the server 54 includes, for example, a processing unit 64, an input operation unit 66, and a monitor 68.
  • FIG. 12A shows a configuration example of the tightening tool 14.
  • the tightening tool 14 includes, for example, a control unit 70, a motor 72, and a torque sensor 74.
  • the control unit 70 includes a computer and a motor drive unit, and control information such as tightening torque values T1 and T2 is provided from the controller 52.
  • the motor 72 is driven in accordance with control information such as the tightening torque values T1, T2, and the drive current is supplied to the motor 72 when the trigger switch 26 is turned on.
  • the rotation of the motor 72 is transmitted to the socket 24 attached to the rotary shaft 76, and a tightening torque value T is applied to the nut 8 fitted in the socket 24.
  • the rotary shaft 76 may be provided with a gear mechanism, and the rotational force of the motor 72 may be transmitted to the socket 24 at a desired gear ratio.
  • the torque sensor 74 detects the tightening torque value T from the motor 72 or the rotating shaft 76, and the detected torque value is taken into the control unit 70.
  • the torque sensor 74 only has to detect the tightening torque of the bolt 6 and the nut 8 and may be provided outside the tightening tool 14.
  • FIG. 12B shows an example of the bolt 6 provided with the axial force sensor 18. If each bolt 6 is provided with an axial force sensor 18 and the axial force F applied to each bolt 6 is detected, the tightening torque value of the tightening tool 14 and its increase or decrease can be measured.
  • a strain sensor may be used as the axial force sensor 18.
  • FIG. 13A shows a configuration example of the controller 52.
  • the controller 52 is a control means for the tightening tool 14 and is an example of a seal tightening management apparatus for seal tightening.
  • the controller 52 is configured by a computer, for example, and includes a processor 80, a storage unit 82, an input / output unit (I / O) 84, an input operation unit 58, a communication unit 86, and a display unit 60.
  • the processor 80 is an example of processing means, and performs information processing such as an OS (Operating System) and a seal construction management program stored in the storage unit 82.
  • OS Operating System
  • the storage unit 82 is used to store an OS, a seal construction management program, tightening condition information, detection information, and the like, and includes a ROM (Read Only Memory) and a RAM (Random Access Memory). A storage element capable of holding stored contents may be used for the storage unit 82.
  • the I / O 84 is controlled by the processor 80 and used for input / output of control information.
  • a barcode reader 88 or a removable external memory 90 may be connected to the I / O 84 as an external device.
  • the barcode reader 88 is an example of an information acquisition unit.
  • the external memory 90 is a log information extraction memory, and for example, a USB (Universal Serial Bus) memory may be used.
  • the input operation unit 58 includes a key switch, a touch sensor, and the like, and is used for input information input trigger, output information extraction trigger, mode switching, and the like.
  • the communication unit 86 is controlled by the processor 80 and is used for wireless connection with the external device such as the server 54 and Internet connection.
  • the display unit 60 is controlled by the processor 80 and is an example of a means for presenting input information and output information.
  • the display unit 60 may include, for example, a green lamp 92-1 and a red lamp 92-2 as status information display means.
  • the green lamp 92-1 is lit when normal and the red lamp 92-2 is abnormal. Can be turned on.
  • FIG. 13B shows an example of the stored contents of the storage unit 82.
  • the storage unit 82 has a temporary storage area 94-1 and a storage area 94-2.
  • the temporary storage area 94-1 for example, flange information 100, gasket information 102, worker information 104, tightening result information 106 acquired from the tightening tool 14, and the like are temporarily stored.
  • the storage area 94-2 for example, a database such as the tightening instruction information table 40 is constructed.
  • FIG. 14 shows a configuration example of the server 54.
  • the server 54 is an example of a log information presentation unit as well as a support device for the controller 52.
  • the server 54 includes, for example, a processor 112, a storage unit 114, an input / output unit (I / O) 116, and a communication unit 118 as the processing unit 110, and the input operation unit 66 and the monitor 68 described above are connected thereto.
  • the processor 112 performs information processing such as an OS and a seal construction management program stored in the storage unit 114. This information processing includes processing such as provision of tightening condition information to the controller 52, acquisition of information representing the tightening result from the controller 52, presentation of the tightening result information, and the like.
  • the storage unit 114 is used for storing an OS, a seal construction management program, tightening condition information, log information, and the like, and includes a ROM and a RAM.
  • the storage unit 114 may be a storage device such as a hard disk or semiconductor memory capable of holding stored contents.
  • the I / O 116 is controlled by the processor 112 and used for input / output of control information.
  • an external memory 122 is connected to the I / O 116 as an external device.
  • the communication unit 118 is used, for example, for connection with a wireless controller 52 or the like.
  • the communication unit 118 is controlled by the processor 112, and is used for wireless connection between the server 54 and external devices such as the tightening tool 14 and the controller 52, and Internet connection.
  • the input operation unit 66 is used for an input operation of input information, and is also used for an output information take-out trigger and a mode switching operation by the input operation.
  • the monitor 68 is an example of an information presentation unit and a display unit, and is used to display, for example, the tightening instruction information table 40 and the tightening result.
  • the screen display unit of the monitor 68 may include a touch panel 120, and input information corresponding to display information may be performed instead of the input operation unit 66.
  • FIG. 15 shows an example of the tightening result.
  • a tightening result screen simulating the tightening points P1, P2,.
  • the This tightening result screen shows information on detection results (B in FIG. 15) acquired from the axial force sensors 18-1, 18-2,. And the information of the tightening location by the tightening tool 14 and the number of rounds (S) is generated in combination.
  • the target axial force of tightening and the tightening force for each number of cycles (S) are displayed for each tightening point.
  • FIG. 16 shows a processing sequence of seal construction management by the seal construction management system 50.
  • the tightening tool 14 performs initial setting (S31), and the controller 52 performs initial setting (S32).
  • the controller 52 and the server 54 are linked together, and the controller 52 takes in the tightening condition information including the torque coefficient k1 and the like provided from the server 54 (S33).
  • the controller 52 takes in the tightening condition information by acquiring the tightening instruction information table 40.
  • the controller 52 that has acquired the tightening condition information selects tightening conditions corresponding to the flanges 10-1 and 10-2 and the gasket 12 selected in advance (S34).
  • the controller 52 also sets the number of times S and the tightening position P (S35), and calculates the tightening torque value T1 using the torque coefficient k1 and the set axial force Fx (S36). If a candidate for the tightening torque value T1 is stored in advance, one of the stored tightening torque values T1 may be selected. After the tightening preparation process, the controller 52 sets a tightening torque value T1 for the tightening tool 14 (S37).
  • each of the axial force sensors 18-1, 18-2,..., 18-n detects the axial force of the bolt 6 at each tightening point P (S39), and the detected axial force F is taken into the controller 52. (S40).
  • the controller 52 determines whether it is a step for calculating the torque coefficient k (the number of cycles) (S42). When it is a calculation step (YES in S42), the controller 52 determines whether the detected axial force is different from the set axial force (S43). If it is not the step of calculating the torque coefficient k (NO in S42), if there is no difference between the detected axial force and the set axial force (NO in S43), the process returns to S35 and the tightening operation is continued. At this time, the controller 52 counts up, for example, the number of tours (S) and calculates a tightening torque value T corresponding to the next number of tours. As a result, the output torque T is changed or set stepwise or continuously in accordance with the tightening point P or the number of rounds S.
  • the controller 52 calculates a correction torque coefficient k2 using the detection result of the axial force as a correction process of the tightening torque value (S44). Then, the controller 52 sets a new tightening condition including the correction torque coefficient k2 (S45), returns to S35, and continues the tightening process.
  • the controller 52 determines that the tightening is completed based on the count value of the number of times S (YES in S41), the tightening is completed (S46), and a tightening completion instruction is input to the tightening tool 14 to complete the tightening.
  • This tightening completion may be presented using the monitor 68, for example.
  • the controller 52 notifies the server 54 of the tightening result information. Then, the tightening result information is displayed on the server 54 (S47).
  • the controller 52 determines the number of rounds (S) as a determination as to whether or not the tightening is complete, but is not limited thereto. For example, the controller 52 detects variations obtained from the axial force sensors 18-1, 18-2,..., 18-n. If it is determined, the tightening process may be further repeated.
  • FIG. 17 shows an example of a seal construction management device according to the fourth embodiment.
  • This seal construction management device 130 has a tightening tool 132 and a control means 134.
  • the tightening tool 132 is, for example, a torque wrench or a hand nut runner, and includes a gear unit 136 that generates a set tightening torque value.
  • a socket 138 coupled to the nut 8 is installed in this gear unit 136.
  • the gear unit 136 includes an information acquisition unit 140 that acquires identification information and tightening point information of the bolt 6 and the nut 8.
  • the information acquisition unit 140 includes, for example, a reception antenna, a reception unit, a signal conversion unit, a transmission unit, and a transmission antenna.
  • the information acquisition unit 140 receives tag information (not shown) installed on the bolt 6 or the nut 8 and acquires identification information such as ID (Identification) from the tag information.
  • the identification information is converted into a transmission signal by the signal conversion unit, and transmitted to the control means 134 side through the transmission unit. For example, near field communication is used for transmitting the transmission signal.
  • the control unit 134 includes, for example, a communication unit 142, a processing unit 144, a storage unit 146, and an information presentation unit 148.
  • the communication unit 142 communicates with the information acquisition unit 140 installed in the tightening tool 132 and receives the identification information of the bolt 6 and the nut 8.
  • the processing unit 144 performs transmission / reception of identification information and the like with the information acquisition unit 140 through the communication unit 142, and also performs tightening torque value setting processing, torque coefficient calculation processing, and the like.
  • the storage unit 146 stores, for example, identification information of bolts 6 and nuts 8 and tightening position information, as well as tightening procedures, tightening torque value calculation information, torque coefficient calculation information, and other tightening locations not shown.
  • the axial force information received from the axial force sensors 18-1, 18-2,... 18-n (FIG. 1) is stored.
  • the information presentation unit 148 displays tightening torque value information and torque coefficient information set to the tightening tool 132, corrected torque coefficient information, detected axial force information, and the like, and also displays tightening position instruction information in the tightening process. It is an example of the means to do.
  • the axial force detection process, torque coefficient calculation process, and tightening torque value correction process in the tightening process are as described in the above-described embodiment, and the description thereof is omitted.
  • FIG. 18 shows a comparative example of flange seal construction processing.
  • the seal construction management process shown in FIG. 18, for example, as in the second and third embodiments, eight bolts 6 and nuts 8 are fastened to the flanges 10-1 and 10-2. Processing is in progress.
  • This tightening process is a case where a value of 0.2 is maintained as a preset torque coefficient k in the calculation process of the tightening torque value T set for the tightening tool 14. Then, the tightening torque value T is increased stepwise according to the number of cycles.
  • FIG. 18A it can be seen that the axial force F is always acting at the tightening position P6 greater than the other tightening positions.
  • the tightening tool 14 is shown, but the present invention is not limited thereto.
  • a torque wrench capable of manually setting a tightening torque may be used as the tightening tool 14.
  • the tightening tool 14 may be a large assembly device that has a tightening arm for tightening bolts and can detect the tightening position on the product and detect the axial force due to tightening.
  • the means for detecting the axial force acting on the tightening point is shown as the means in which the axial force sensor is installed on the bolt itself, but is not limited thereto.
  • the axial force may be detected using a detection device such as an ultrasonic sensor with respect to the tightened bolt 6, and the torque coefficient may be calculated using the detection result.
  • controller 52 for example, a portable information terminal such as a smartphone may be used.
  • controller 52 and the server 54 are linked to one tightening tool 14
  • the present invention is not limited to this.
  • the controller 52 and the server 54 may be linked to the plurality of tightening tools 14, and the single server 54 may be provided to the plurality of controllers 52.
  • the seal construction management method, the seal construction management device, the seal construction management program, and the seal construction management system of the present invention use the tightening tool capable of tightening management to determine the axial force detected in the tightening process by information processing using a computer.
  • the correction processing of the torque coefficient by using it is possible to set a tightening torque value according to the state of the tightening portion, and to stabilize the tightening state with respect to the flange and to perform the tightening process with a necessary axial force.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Automatic Assembly (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)

Abstract

L'invention concerne un procédé de gestion de formation de fermeture hermétique selon lequel une pluralité d'emplacements de serrage sont installés sur des brides (10-1, 10-2) qui prennent en sandwich un joint d'étanchéité (12), un boulon (6) et un écrou (8) étant présents à chaque emplacement de serrage et serrés, une liaison par bride à serrage extrêmement précis étant obtenue au moyen : d'une étape de serrage du boulon et de l'écrou à l'aide d'un outil de serrage (14) pour laquelle une première valeur de couple de serrage (T1) est définie ; d'une étape de détection de la force axiale sur le boulon ; d'une étape de calcul ou de sélection d'un coefficient de couple (k2) pour le boulon à l'aide de la force axiale détectée ; et d'une étape de définition, pour l'outil de serrage, d'une seconde valeur de couple de serrage (T2) qui est calculée ou sélectionnée à l'aide du coefficient de couple, pour chaque emplacement de serrage des boulons.
PCT/JP2019/013067 2018-03-28 2019-03-27 Procédé, dispositif, programme et système de gestion de formation de fermeture hermétique Ceased WO2019189291A1 (fr)

Priority Applications (4)

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KR1020207023307A KR102641050B1 (ko) 2018-03-28 2019-03-27 시일 시공 관리 방법, 시일 시공 관리 장치, 시일 시공 관리 프로그램, 시일 시공 관리 시스템
CN201980021775.8A CN111902243B (zh) 2018-03-28 2019-03-27 密封施工管理方法及其装置、存储介质、系统
JP2020510982A JP7354093B2 (ja) 2018-03-28 2019-03-27 シール施工管理方法、シール施工管理装置、シール施工管理プログラム、シール施工管理システム
SG11202007932PA SG11202007932PA (en) 2018-03-28 2019-03-27 Method for managing seal handling, device for managing seal handling, program for managing seal handling, and system for managing seal handling

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JP2018-062039 2018-03-28
JP2018062039 2018-03-28

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WO2019189291A1 true WO2019189291A1 (fr) 2019-10-03

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KR (1) KR102641050B1 (fr)
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WO (1) WO2019189291A1 (fr)

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JP2021081578A (ja) * 2019-11-19 2021-05-27 ニチアス株式会社 フランジ継手の締結過程の学習方法及びフランジ継手の締結過程の学習システム
CN113048014A (zh) * 2019-12-27 2021-06-29 新疆金风科技股份有限公司 风力发电机组叶根螺栓紧固控制系统和控制方法
JP2022074032A (ja) * 2020-10-30 2022-05-17 ニチアス株式会社 複数のボルトから締結操作中のボルトを判別する方法、プログラムを記録したコンピュータ読み取り可能な記録媒体、プログラムを記録したコンピュータ読み取り可能な記録媒体を有する装置、複数のボルトから緩め操作中のボルトを判別する方法
WO2023133612A1 (fr) * 2022-01-14 2023-07-20 Integrity Engineering Solutions Pty Ltd Système d'assemblage de raccords à bride

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CN116160232B (zh) * 2022-12-16 2025-10-24 国能铁路装备有限责任公司 机车车轮部件组装方法

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JP2021081578A (ja) * 2019-11-19 2021-05-27 ニチアス株式会社 フランジ継手の締結過程の学習方法及びフランジ継手の締結過程の学習システム
JP7113807B2 (ja) 2019-11-19 2022-08-05 ニチアス株式会社 フランジ継手の締結過程の学習方法及びフランジ継手の締結過程の学習システム
CN113048014A (zh) * 2019-12-27 2021-06-29 新疆金风科技股份有限公司 风力发电机组叶根螺栓紧固控制系统和控制方法
JP2022074032A (ja) * 2020-10-30 2022-05-17 ニチアス株式会社 複数のボルトから締結操作中のボルトを判別する方法、プログラムを記録したコンピュータ読み取り可能な記録媒体、プログラムを記録したコンピュータ読み取り可能な記録媒体を有する装置、複数のボルトから緩め操作中のボルトを判別する方法
JP7295197B2 (ja) 2020-10-30 2023-06-20 ニチアス株式会社 フランジ部ボルト締結教習方法、フランジ部ボルト締結教習プログラム、及びこれを記録したコンピュータ読み取り可能な記録媒体を有する装置
WO2023133612A1 (fr) * 2022-01-14 2023-07-20 Integrity Engineering Solutions Pty Ltd Système d'assemblage de raccords à bride

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CN111902243A (zh) 2020-11-06
KR20200135306A (ko) 2020-12-02
SG11202007932PA (en) 2020-09-29
CN111902243B (zh) 2023-05-05
KR102641050B1 (ko) 2024-02-27
JP7354093B2 (ja) 2023-10-02
TWI796460B (zh) 2023-03-21
TW201942507A (zh) 2019-11-01
JPWO2019189291A1 (ja) 2021-04-22

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