JP5362498B2 - Tightening data management system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fastening data management system which continuously fastens fixing members in different set torque values by a single fastening tool such as an electronic torque wrench and the like. <P>SOLUTION: The fastening data management system includes the fastening tool 1 for fastening the fixing member 5 that transmits fastening data when the fastening torque of the fixing member 5 reaches the set torque value, and the fastening management device 30 for transmitting the set torque value of the subsequent fixing member to the fastening tool 1 when receiving the fastening data transmitted from the fastening tool 1 by cable or radio. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  According to the present invention, a tightening torque value for tightening a tightening member such as a bolt or a nut is indicated from a tightening management device to a tightening tool such as a torque wrench, and the tightening tool tightens the tightening member with the indicated torque value. When tightening is completed, a tightening data management system that sends back tightening data such as a tightening torque value of a tightening member to be tightened to the tightening member, and a tightening data management system that transmits tightening data to the tightening tool. The present invention relates to a tightening management device and a tightening tool constituting an attached data management system.

  As a tightening data management system for managing tightening torque data obtained by tightening bolts, nuts and other tightening members with a torque wrench, a tightening data management device comprising a personal computer, etc., and the tightening data management device wired or wirelessly The thing comprised by fastening tools, such as a torque wrench which communicates, is proposed (patent document 1).

  When the tightening member to be tightened is displayed on the monitor of the tightening data management device, the operator confirms this and starts the tightening operation to tighten the instructed tightening member with the tightening tool. The fact that the set torque value set in the tool has been reached is confirmed by a notification means such as a buzzer provided in the tightening tool, and when the tightening operation is completed, the tightening torque value is returned to the tightening data management device. The management device manages the tightening torque value for each tightening member and can display the managed data on the monitor.

  In addition, as an example of a torque wrench, the tightening tool is not configured to be able to mechanically determine a set torque value using a toggle configured by a link mechanism, a spring, and the like. A torque wrench having an electronic configuration is used in which a strain cage is attached to a head portion attached to the tip end portion and a torque value is output from a signal output from the strain gauge.

JP 2006-320984 A

  The above-described conventional tightening data management system is intended for a case where a plurality of tightening members are tightened with the same set torque value with a single torque wrench in one tightening operation. For this reason, if the set torque value of the tightening member to be managed is different, it is necessary to prepare a torque wrench for each set torque value.

  However, when a plurality of torque wrench having different set torque values are prepared, it may be possible to select the torque wrench by mistake. In particular, the tightening torque values required for a plurality of tightening members to be tightened in one tightening operation are different, for example, in the case of tightening in the cell production method, a torque wrench every time one tightening member is tightened. Has to be replaced, which complicates the work and may lead to erroneous tightening.

  An object of the present invention is to provide a tightening data management system capable of continuously tightening tightening members having different set torque values with a single tightening tool such as an electronic torque wrench.

(1) A configuration of a tightening data management system that realizes an object of the present invention includes: a tightening tool that tightens a tightening member that transmits tightening data when the tightening torque of the tightening member reaches a set torque value; When the tightening data transmitted from the tightening tool is received by wire or wirelessly, the set torque value of the tightening member to be tightened next is transmitted to the tightening tool, and the tightening information of the tightening member is displayed on the first display means. A tightening data management system that outputs a tightening data management system, wherein the tightening tool transmits tightening data after determining whether to tighten or not based on the tightening torque value and the received set torque value. The tightening management device has a tool control unit, and determines whether or not to tighten each time based on the tightening torque value of the received tightening data and the transmitted set torque value, and the determination result is the first display means. And the following tightening order Having a management control unit that transmits a set torque value of the fastening member to the tool said clamping.
(2) In the above-described tightening data management system, the tightening tool includes a sensor for detecting the tightening torque of the tightening member, a set torque setting unit capable of changing a set torque value, A control unit that outputs tightening data to the tightening management device wirelessly or by wire after determining whether or not tightening is based on the tightening torque value based on the output and the set torque value set by the set torque setting unit; has, wherein, when the set torque value is input from the clamping management device, changing the set torque value to be set to the set torque setting unit to set the torque value input to the New It is characterized by .
(3) In any one of the tightening data management systems described above, the tightening tool includes a second display unit that selectively or simultaneously displays the tightening data and a set torque value that is set. And
(4) In any one of the tightening data management systems described above, the tool control unit notifies the result of the pass / fail determination to a notification unit .
(5) In any one of the tightening data management systems described above, the management control unit notifies the determination result in the case of a negative determination, and corresponds the tightening data to the tightening member in the case of a pass determination. And storing it in a memory.
(6) In any one of the tightening data management systems described above, the management control unit counts the number of tightening members corresponding to the input tightening data, and the total number of tightening members stored in the memory in advance. The set torque value is output until the value reaches .

(1) According to the tightening data management system of the present invention, when tightening a plurality of tightening members such as bolts having different set torques, the tightening management device stores the set torque values of the plurality of tightening members in advance. In this case, the operator can perform tightening with a single tightening tool such as a torque wrench without changing and adjusting the set torque value each time.
(2) Also, it is possible to confirm on the display means the fastening member of the target tightening can tighten the fastening member definitely.
(3) Furthermore, since the tightening state is determined immediately after the tightening member is tightened, the tightening member having a poor tightening can be retightened to an appropriate torque on the spot.
(4) Further, according to the tightening tool in the tightening data management system of the present invention , for example, in an electronic torque wrench, a plurality of bolts having different set torque values are tightened by bidirectional communication with the tightening management device. In this case, the operator does not need to change the set torque value each time.
(5) According to the invention of claim 3 , the tightening data such as the tightening torque and the set torque value can be confirmed each time.
( 6 ) According to the invention of claim 4 , it is possible to notify the operator that the tightening has been made to the set torque value by lighting, blinking, sound, or the like of the lamp.
( 7 ) According to the invention of claim 8, the set torque value is obtained by managing the tightening data such as the tightening torque of the tightening member and setting the set torque value for the plurality of tightening members in advance It is possible to support the improvement of workability of the tightening tool that can change the angle.

According to the fifth aspect of the present invention, it is possible to determine whether or not the tightening is performed each time, and in the case of poor tightening, for example, a retightening instruction can be output, and the tightening member can be reliably set to the set torque value. It can be tightened with.

According to the invention of claim 6 , it is possible to prevent forgetting to tighten by counting the number of completed tightening of the tightening member.

1 is a circuit block diagram of a tightening management device and a tightening tool showing an embodiment of a tightening data management system according to the present invention. The flowchart which shows operation | movement of the fastening data management system of FIG.

  Hereinafter, the present invention will be described based on embodiments shown in the drawings. FIG. 1 is a circuit block diagram of a tightening management apparatus and a tightening tool showing an embodiment of a tightening data management system according to the present invention, and FIG. 2 is a flowchart showing an operation of the tightening data management system of FIG.

  In the present embodiment, an electronic torque wrench 1 as a tightening tool is attached to a head member 5 having a drive shaft 4 to which a socket 3 is attached at the tip of a hollow lever member 2, and tightened to the head member 5. A strain gauge 12 for detecting the applied torque is attached. Further, a tightening monitoring device 10 that performs two-way communication with the tightening management device 30 by radio is attached to the surface of the lever member 2. When the socket 3 is engaged with the head of a bolt 6 which is a tightening member, for example, the operator grasps the lever member 1 and rotates it in the tightening direction, a detection signal from the strain gauge 12 is sent to the tightening monitoring device 10. Is output. Note that the tightening monitoring device 10 and the tightening management device 30 are configured to perform bidirectional communication by a wireless method using a frequency band of, for example, 2.4 GHz, but may be bidirectional communication by wire.

  The tightening monitoring device 10 converts the detection signal of the strain gauge 12 into a digital signal by the AD converter 14 via the operation amplifier 13, and the control unit 11 calculates the tightening torque value. The tightening torque value calculated by the control unit 11 is displayed on the display device 15 in real time, and the set torque value is displayed. Although the set torque value can be selectively displayed by operating the operation switch 18, it may be displayed in parallel with the tightening torque value.

  In the control unit 11, a set torque value for tightening the bolt 6 is set in the set torque setting unit 11a. In the set torque setting unit 11a, an upper limit value and a lower limit value for the set torque value can be set. As for the set torque value, the operator manually operates the operation switch 18 to set the set torque value in the set torque setting unit 11a, and the set torque value instructed from the tightening management device 30 via the wireless communication module 17 is automatically set. There is a method of setting in the set torque setting unit 11a. In this embodiment, the setting will be described according to the case of setting by the automatic setting method.

  When the tightening torque value reaches the upper / lower limit value range, the controller 11 blinks green in the pass / fail determination LED 16 and changes to green lighting when the set torque value is reached. If the LED 16 is stable outside the upper and lower limits, the LED 16 is lit red. Note that a buzzer (not shown) is used in addition to the LED 16 as the notification means.

  The result of the pass / fail judgment of the tightening data by the control unit 11 is output to the wireless communication module 17 in real time together with the tightening position information and the tightening torque value of the bolt 5 and transmitted to the tightening management device 30. To be able to remember.

  Here, when the pass / fail determination result is a negative determination, re-tightening may be performed until the pass determination is reached, but the tightening data is transmitted to the tightening management device 30 with the negative determination result, and all After completion of the bolt tightening operation, bi-directional transmission of re-tightening may be performed.

  When the set torque automatic setting is selected by the operation switch 18, when the set torque value is newly transmitted from the tightening management device 30, the control unit 11 newly sets the set torque value set in the set torque setting unit 11a. Change to set torque value.

  On the other hand, the tightening management device 30 is constituted by a personal computer in this embodiment, and enables bidirectional communication with the torque wrench 1 via the wireless communication module 34. When the tightening management device 30 inputs set torque values to the control unit 31 that controls the entire device, for example, in the order of tightening (assembling process) of the bolts 5 using the operation keys 35, the set torque values are stored in the memory 32 in the tightening order of the bolts. Is memorized. During the set torque value input operation, the tightening positions of all the bolts 5 are displayed on the monitor 33, and the display mode of the set torque value input target bolt is different from the display of other bolts. The target bolt can be specified and displayed. Moreover, the specific display which displays information, such as a bolting position of the volt | bolt 5, for every bolting order one by one can also be made. In addition, as a display mode on the monitor 33, an image of a device to be assembled can be displayed, and this image is used as tightening information indicating a tightening position when a set torque value is transmitted to the torque wrench 1. be able to.

  When a standby signal for starting tightening using bidirectional communication is input from the torque wrench 1, the control unit 31 sets the set torque value stored in the memory 32 in the tightening (assembly process) order. 31b is instruct | indicated and the set torque value is instruct | indicated to the set torque instruction | indication part 31a. At first, the instruction is transmitted to the torque wrench 1 via the wireless communication module 34 without waiting for an instruction, the bolt 5 is specified and displayed on the monitor 33, and the set torque value is also displayed. The operator of the torque wrench 1 confirms the specific display on the monitor 33 and tightens the bolt 5 at the tightening position.

  The bolt 5 is tightened with the set torque set in the set torque setting unit 11 a of the torque wrench 1, and the tightening data is transmitted from the torque wrench 1 to the control unit 31 via the wireless communication module 34. The control unit 31 makes a pass / fail determination of the tightening data, displays a pass / fail determination result on the monitor 33, and stores the tightened data determined to pass along with the tightening position of the bolt 5 in the memory 32.

  Even if this pass / fail determination result is a negative determination, the tightening data is not stored in the memory 32, and the set torque value of the bolt 5 in the next tightening order is called from the memory 32 and sent to the monitor 33. And a set torque value to the torque wrench 1 is transmitted. In this case, after the tightening process for all the bolts 5 is completed, the bolts 5 having a problem with tightening which is a problem are rechecked and tightened again. In addition, when this acceptance / rejection determination result is rejection determination, since the result is displayed on the monitor 33, the operator tightens the bolt again, performs acceptance / rejection determination on the retightening data, Then, the tightening data may be stored in the memory 32 together with the tightening position of the bolt 5.

  Next, the operations of the tightening monitoring device 10 and the tightening management device 30 of the torque wrench 1 will be described with reference to the flowchart of FIG. In FIG. 2, S indicates a step.

  When the main power of the tightening management device 30 is turned on and in the standby (start) state, the torque wrench 1 side turns on the power switch and is in the standby (start) state, the tightening monitoring device 10 is in a set torque reception standby state. (S30) The set torque value is transmitted from the tightening management device 30 (S10), and the tightening monitoring device 10 sets the set torque in the set torque setting unit 11a. Note that a tightening timer required to tighten all bolts is started from the time when the set torque value is first transmitted in S10.

  The operator performs the tightening operation of the bolt 5 at a predetermined tightening position with the torque wrench 1, and the LED 16 confirms the green lighting or the acceptable buzzer sound of the pass determination and ends the tightening operation (S 32).

  The tightening monitoring device 10 performs tightening torque acceptance / rejection determination (S32). If the determination is acceptable, the tightening data is transmitted to the tightening management device 30 in the tightening data reception state (S11) in S33, In S34, it is determined whether or not the tightening of all the axes has been completed. If the tightening of all the axes has been completed, the receiving operation of the set torque value is terminated. If the tightening of all the shafts has not been completed, the process returns to S30 to enter a standby state for receiving the next set torque value.

  In the case of a negative determination in S32, a negative determination process (NG process) for displaying the red lamp non-rejection determination result on the LED lamp 16 is performed (S35).

  The tightening management apparatus 30 performs pass / fail determination of the tightening data each time it receives the tightening data (S12).

  If the result of the tightening acceptance / rejection determination at S12 is a tightening pass determination, the tightening data is stored in the memory at S13, and the number of tightening shafts (the number of tightening bolts) is counted at S15.

  If the acceptance / rejection determination result in S12 is a rejection determination, a failure determination process (NG process) such as displaying the failure determination result on the monitor 33 is performed, and the process proceeds to S15.

  When the number of tightening axes is counted in S15, it is determined in S16 whether or not the tightening timer has expired and the total number of axes has been reached. If it is within the tightening timer time, the process proceeds to S17. It is determined whether or not the tightening of all the axes has been completed. If the tightening of all the axes has not been completed, the process returns to S10, and the set torque value of the bolt in the next tightening order is transmitted. If all the shafts have been tightened in S17, the transmission operation of the set torque value is terminated.

  In S16, if the time of the tightening timer is over or the number of tightening axes is over, it is determined that a trouble has occurred, and an NG process for displaying the display on the monitor 33 in S18. To end the transmission operation of the set torque value.

  According to the tightening data management system according to the present embodiment, for example, when one worker assembles all or a plurality of locations of one device by one person, the set torque value is different using one electronic torque wrench. When tightening multiple bolts, there is no need for the operator to manually change the set torque value, and it is only necessary to tighten the bolts according to the assembly procedure set in the tightening management device in advance, reducing work time. And forgetting to tighten and mistakes in tightening torque can be cleared.

1 Torque wrench (tightening tool)
2 Lever member 3 Socket 4 Drive shaft 5 Head member 6 Bolt (clamping member)
10 Tightening Monitoring Device 11 Control Unit (CPU)
12 Strain gauge 13 Operation amplifier 14 AD converter 15 Display device 16 Pass / fail judgment LED
17 wireless communication module 18 operation switch 19 external memory 30 management device 31 control unit 31a set torque instruction unit 31b tightening axis instruction unit 32 memory 33 monitor 34 wireless communication module 35 operation key

Claims (6)

A tightening tool for tightening a tightening member that transmits tightening data when the tightening torque of the tightening member reaches a set torque value;
When the tightening data transmitted from the tightening tool is received by wire or wirelessly, the set torque value of the tightening member to be tightened next is transmitted to the tightening tool, and the tightening information of the tightening member is displayed on the first display means. A tightening management device that outputs to
A tightening data management system comprising:
The tightening tool has a tool control unit that transmits tightening data after determining whether or not tightening is based on the tightening torque value and the received set torque value,
The tightening management device determines whether or not tightening is performed each time based on the tightening torque value of the received tightening data and the transmitted set torque value, displays the determination result on the first display means, and performs the next tightening operation. A tightening data management system including a management control unit that transmits a set torque value of the fastening members in the order of attachment to the tightening tool . The tightening tool is
A sensor for detecting the tightening torque of the tightening member;
A set torque setting section for changing the set torque value;
After determining whether or not tightening is based on the tightening torque value based on the output of the sensor and the set torque value set by the set torque setting unit, the tightening data is output to the tightening management device wirelessly or by wire. A control unit;
Have
Wherein, when the set torque value is input from the clamping management apparatus, claims and changes the set torque value to be set to the set torque setting unit to set the torque value input to the New Item 2. The tightening data management system according to Item 1 . The tightening tool according to any one of claims 1 to 3, wherein the tightening tool has second display means for selectively or simultaneously displaying the tightening data and a set torque value that has been set. Data management system . The tightening data management system according to any one of claims 1 to 3, wherein the tool control unit notifies a result of the pass / fail determination to a notifying unit . The management control unit, notifies a determination result in the case of determination, in the case of acceptance from claim 1, characterized in that stored in the memory corresponding to the data with its fastening to the tie member 4 The tightening data management system according to any of the above. The management control unit, wherein the counting the number of fastening members corresponding to the input data tightening, and outputs the set torque value until it reaches the total number of clamping members previously stored in the memory Item 6. The tightening data management system according to any one of Items 1 to 5.

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