JPH08201194A - Screw-clamping torque measuring method and its torque measuring unit - Google Patents
Screw-clamping torque measuring method and its torque measuring unitInfo
- Publication number
- JPH08201194A JPH08201194A JP7009403A JP940395A JPH08201194A JP H08201194 A JPH08201194 A JP H08201194A JP 7009403 A JP7009403 A JP 7009403A JP 940395 A JP940395 A JP 940395A JP H08201194 A JPH08201194 A JP H08201194A
- Authority
- JP
- Japan
- Prior art keywords
- torque measuring
- screw tightening
- screw
- torque
- measuring unit
- 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.)
- Granted
Links
Landscapes
- Force Measurement Appropriate To Specific Purposes (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、ネジ締め作業ラインの
ネジ締め装置のネジ締めトルク測定方法とそのトルク測
定ユニットに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a screw tightening torque measuring method for a screw tightening device in a screw tightening work line and a torque measuring unit therefor.
【0002】[0002]
【従来の技術】ロボットに取付けられ、又は、組立工程
に配置されて、多品種少量生産に使用されるネジ締め装
置は、多品種少量生産を効率良く処理するために、締め
付けトルクの設定変更が容易であり、且つ、自動化でき
ることが必要である。更に、最近では、ネジ締め品質向
上のために、締め付けトルクの精度保証が求められてい
る。2. Description of the Related Art A screw tightening device attached to a robot or placed in an assembly process and used for high-mix low-volume production has a setting change of tightening torque in order to efficiently process high-mix low-volume production. It must be easy and can be automated. Furthermore, recently, in order to improve the quality of screw tightening, it is required to guarantee the accuracy of tightening torque.
【0003】締め付けトルク保証方法の第1従来例で
は、締め付けが完了した対象物を抜取り検査し、締め付
けを戻すために必要な戻しトルク或いは更に締めるため
に必要な増しトルクを測定し、測定したトルクを目標ト
ルクと比較して、作業者が、校正必要と判断した場合に
は、校正値を計算し、得られた校正値をネジ締め機の制
御部に教示している。In the first conventional example of the tightening torque assurance method, the object that has been tightened is extracted and inspected, and the return torque necessary for returning the tightening or the increasing torque necessary for further tightening is measured, and the measured torque is measured. Is compared with the target torque, and when the operator determines that the calibration is necessary, the calibration value is calculated, and the obtained calibration value is taught to the controller of the screw tightening machine.
【0004】第2従来例では、ビットを、トルク検出セ
ンサを介してネジ締め機の回転部の先端に取付け、ネジ
締め作業毎に毎回の締め付けトルクを測定し、得られた
測定値を制御部にフィードバックして、ネジ締め機の締
め付けトルクを制御している。In the second conventional example, the bit is attached to the tip of the rotating part of the screw tightening machine via the torque detection sensor, the tightening torque is measured every time the screw tightening work is performed, and the obtained measured value is used as the control part. Feedback to control the tightening torque of the screw tightener.
【0005】[0005]
【発明が解決しようとする課題】しかし、前記第1従来
例では、トルクの測定と校正に時間を要し能率が低下す
るという問題点がある。又、前記戻しトルクや増しトル
クの測定に熟練度を要し、作業者によって測定結果にバ
ラツキが発生するという問題点がある。又、事後測定で
あるので、測定結果に異常値があっても、原因が、ネジ
締め対象物の異常にあるのか、ネジ締め装置側の異常に
あるのかを判断できないという問題点がある。However, in the first conventional example, there is a problem that it takes time to measure and calibrate the torque and the efficiency is lowered. Further, there is a problem that skill is required to measure the return torque and the increased torque, and the measurement result varies depending on the operator. Further, since it is the post-measurement, even if there is an abnormal value in the measurement result, there is a problem that it is not possible to determine whether the cause is an abnormality of the screw tightening target or an abnormality of the screw tightening device side.
【0006】前記第2従来例では、トルクの測定と校正
には時間を要せず能率が良く、自動化が可能であるが、
ネジ締め装置の1台毎に前記トルク検出センサを取り付
ける必要があるという問題点がある。又、トルク検出セ
ンサには、測定毎に歪みが加わるので経時変化が大きく
なり、常時測定する前記第2従来例では、測定値の信頼
性が損なわれるという問題点がある。In the second conventional example, torque measurement and calibration do not require time, are highly efficient, and can be automated.
There is a problem that it is necessary to attach the torque detection sensor to each of the screw tightening devices. Further, since the torque detection sensor is distorted at each measurement, the change over time becomes large, and in the second conventional example in which the measurement is always performed, the reliability of the measured value is impaired.
【0007】本発明は、上記の問題点を解決し、生産ラ
インに変更を加えることなく、コスト安なネジ締めトル
ク測定ユニットを使用し、締め付けトルクの管理を効率
良く自動的に行えるネジ締めトルク測定方法とそのトル
ク測定ユニットを提供することを課題とする。The present invention solves the above-mentioned problems and uses a screw tightening torque measuring unit which is inexpensive and does not change the production line. The tightening torque can be efficiently and automatically controlled. An object is to provide a measuring method and a torque measuring unit thereof.
【0008】[0008]
【課題を解決するための手段】本願第1発明のネジ締め
トルク測定方法は、上記の課題を解決するために、ネジ
締め機のビットの先端と噛み合う噛合い部を有し、且
つ、歪み検出センサを備えたトルク測定軸を生産ライン
の搬送手段に搬送される搬送台に取付け、前記搬送台を
前記搬送手段で前記生産ラインのネジ締め機のネジ締め
位置に位置決めし、ネジ締め機の最終締め付けトルクを
測定することを特徴とする。The screw tightening torque measuring method according to the first invention of the present application has, in order to solve the above-mentioned problems, a meshing portion that meshes with the tip of a bit of a screw tightening machine, and detects strain. A torque measuring shaft equipped with a sensor is attached to a carrier table that is transported to the carrier means of the production line, and the carrier table is positioned by the carrier means at the screw tightening position of the screw tightener of the production line. It is characterized by measuring the tightening torque.
【0009】本願第2発明のネジ締めトルク測定方法
は、上記の課題を解決するために、ネジ締め機のビット
の先端と噛み合う噛合い部を有し、且つ、歪み検出セン
サを備えたトルク測定軸を生産ラインの搬送手段に搬送
される搬送台に取付け、前記搬送台を前記搬送手段で前
記生産ラインのネジ締め機のネジ締め位置に位置決め
し、ネジ締め機の最終締め付けトルクを測定し、測定結
果を表示することを特徴とする。In order to solve the above-mentioned problems, the screw tightening torque measuring method of the second invention of the present application has a meshing portion that meshes with the tip of the bit of the screw tightening machine, and has a strain detecting sensor. The shaft is attached to a carrier that is conveyed to the conveying means of the production line, the conveying table is positioned at the screw tightening position of the screw tightener of the production line by the conveying means, and the final tightening torque of the screw tightener is measured, The feature is that the measurement result is displayed.
【0010】本願第3発明のネジ締めトルク測定方法
は、上記の課題を解決するために、ネジ締め機のビット
の先端と噛み合う噛合い部を有し、且つ、歪み検出セン
サを備えたトルク測定軸を生産ラインの搬送手段に搬送
される搬送台に取付け、前記搬送台を前記搬送手段で前
記生産ラインのネジ締め機のネジ締め位置に位置決め
し、ネジ締め機の最終締め付けトルクを測定し、測定結
果を前記ネジ締め機の制御にフィードバックすることを
特徴とする。In order to solve the above-mentioned problems, the screw tightening torque measuring method according to the third invention of the present application has a meshing portion that meshes with the tip of the bit of the screw tightening machine, and has a strain detecting sensor. The shaft is attached to a carrier that is conveyed to the conveying means of the production line, the conveying table is positioned at the screw tightening position of the screw tightener of the production line by the conveying means, and the final tightening torque of the screw tightener is measured, The measurement result is fed back to the control of the screw tightener.
【0011】本願第4発明のネジ締めトルク測定ユニッ
トは、上記の課題を解決するために、トルク測定位置に
固定された取付台と、ネジ締め機のビットの先端と噛み
合う噛合い部を有し、且つ、前記取付台に固定されてい
るトルク測定軸と、前記トルク測定軸の歪みを検出する
歪み検出センサとを有することを特徴とする。In order to solve the above-mentioned problems, the screw tightening torque measuring unit of the fourth invention of the present application has a mounting base fixed at the torque measuring position, and a meshing portion which meshes with the tip of the bit of the screw tightening machine. And a torque measuring shaft fixed to the mounting base, and a strain detecting sensor for detecting a strain of the torque measuring shaft.
【0012】本願第5発明のネジ締めトルク測定ユニッ
トは、上記の課題を解決するために、トルク測定位置に
固定された取付台と、ネジ締め機のビットの先端と噛み
合う噛合い部を有し、且つ、前記取付台に固定されてい
るトルク測定軸と、前記トルク測定軸の歪みを検出する
歪み検出センサと、測定結果の表示手段とを有すること
を特徴とする。In order to solve the above-mentioned problems, the screw tightening torque measuring unit of the fifth invention of the present application has a mounting base fixed at the torque measuring position and a meshing portion that meshes with the tip of the bit of the screw tightening machine. Further, it is characterized in that it has a torque measuring shaft fixed to the mounting base, a strain detecting sensor for detecting a strain of the torque measuring shaft, and a measurement result display means.
【0013】本願第6発明のネジ締めトルク測定ユニッ
トは、上記の課題を解決するために、トルク測定位置に
固定された取付台と、ネジ締め機のビットの先端と噛み
合う噛合い部を有し、且つ、前記取付台に固定されてい
るトルク測定軸と、前記トルク測定軸の歪みを検出する
歪み検出センサと、測定結果を外部機器に送信する手段
とを有することを特徴とする。In order to solve the above-mentioned problems, the screw tightening torque measuring unit of the sixth invention of the present application has a mounting base fixed at the torque measuring position and a meshing portion that meshes with the tip of the bit of the screw tightening machine. Further, it is characterized by comprising a torque measuring shaft fixed to the mounting base, a strain detecting sensor for detecting a strain of the torque measuring shaft, and means for transmitting a measurement result to an external device.
【0014】[0014]
【作用】本願第1発明のネジ締めトルク測定方法と、本
願第4発明のネジ締めトルク測定ユニットとは、ネジ締
め機のビットの先端と噛み合う噛合い部を有し、且つ、
歪み検出センサを備えたトルク測定軸生産ラインの搬送
手段に搬送される搬送台に取付け、前記搬送台を前記搬
送手段で前記生産ラインのネジ締め機のネジ締め位置に
位置決めし、ネジ締め機の最終締め付けトルクを測定す
るので、トルク測定が必要な時のみの測定になり、トル
ク検出精度の経時変化が小さくなり、従来技術に比較し
て、測定の信頼性を長く維持できる。The screw tightening torque measuring method of the first invention of the present application and the screw tightening torque measuring unit of the fourth invention of the present application have a meshing portion that meshes with the tip of the bit of the screw tightening machine, and
A torque measuring shaft equipped with a strain detection sensor is attached to a carrier table that is transported to the carrier means of the production line, and the carrier table is positioned by the carrier means at the screw tightening position of the screw tightener of the production line. Since the final tightening torque is measured, the measurement is performed only when torque measurement is necessary, the change in torque detection accuracy with time is small, and the reliability of measurement can be maintained for a long time as compared with the related art.
【0015】締め付けトルクを、従来技術では、ネジ締
め作業時、又は、製品の抜取り検査で測定しているの
で、測定結果が製品のバラツキを含むことになり、測定
結果をネジ締め機の調整に使用するのに判断に困ること
があるが、本発明では、ネジ締め機自身の締め付けトル
クを測定できるので、ネジ締め機の調整における判断が
明快になる。In the prior art, the tightening torque is measured at the time of screw tightening work or in the product sampling inspection. Therefore, the measurement results include product variations, and the measurement results are used for adjusting the screw tightening machine. Although it may be difficult to make a judgment when using the screw tightener, in the present invention, since the tightening torque of the screw tightener itself can be measured, the judgment in adjusting the screw tightener becomes clear.
【0016】トルク測定軸を搬送台に固定しているの
で、ネジ締め工程中に、一つのトルク測定軸で、複数の
ネジ締め機の締め付けトルクを測定できる。Since the torque measuring shaft is fixed to the carrier, the tightening torque of a plurality of screw tighteners can be measured with one torque measuring shaft during the screw tightening process.
【0017】本願第2発明のネジ締めトルク測定方法
と、本願第5発明のネジ締めトルク測定ユニットとは、
本願第1又は第4発明の作用に加えて、測定結果を表示
するので、作業者の確認が容易である。The screw tightening torque measuring method of the second invention of the present application and the screw tightening torque measuring unit of the fifth invention of the present application are
In addition to the operation of the first or fourth invention of the present application, since the measurement result is displayed, it is easy for the operator to confirm.
【0018】本願第3発明のネジ締めトルク測定方法
と、本願第6発明のネジ締めトルク測定ユニットとは、
本願第1又は第4発明の作用に加えて、測定結果をネジ
締め機の制御にフィードバックするので、制御の自動化
が可能になる。The screw tightening torque measuring method of the third invention of the present application and the screw tightening torque measuring unit of the sixth invention of the present application are
In addition to the operation of the first or fourth invention of the present application, the measurement result is fed back to the control of the screw tightening machine, so that the control can be automated.
【0019】[0019]
【実施例】本発明のネジ締めトルク測定ユニットの一例
を使用するネジ締めトルク測定方法の第1実施例を図1
〜図3に基づいて説明する。EXAMPLE A first example of a screw tightening torque measuring method using an example of the screw tightening torque measuring unit of the present invention is shown in FIG.
~ It demonstrates based on FIG.
【0020】図1は、本発明のネジ締めトルク測定ユニ
ットの一例の一部断面側面図であり、図2は、図1の斜
視図である。FIG. 1 is a partial sectional side view of an example of the screw tightening torque measuring unit of the present invention, and FIG. 2 is a perspective view of FIG.
【0021】図1〜図3において、ネジ締めトルク測定
ユニットAには、上端面中央部にサンプルネジ4がねじ
込まれ、下端は取付台8に固定されているトルク測定軸
1がある。トルク測定軸1には歪み検出センサ3が設け
られ、ネジ締めトルクは歪み検出センサ3の出力として
取り出される。前記取付台8は搬送台13に取付けられ
ている。搬送台13は、図3に示すようにネジ締めライ
ンの搬送手段12上に載置されて、ネジ締め対象ワーク
を載置した搬送台13aと共に搬送され、ネジ締め位置
に位置決めされる。この場合、サンプルネジ4のヘッド
部4aは、使用されるネジのヘッド部と同型であること
が望ましい。又、本実施例では、トルク測定軸1をサン
プルネジ4を上側にして垂直に取付台8に固定されてい
るが、この取り付け方向に限らず、上下逆に取り付けて
も、横方向に取り付けても、斜め方向に取り付けても良
い。1 to 3, the screw tightening torque measuring unit A has a torque measuring shaft 1 in which a sample screw 4 is screwed into the center of the upper end surface and the lower end is fixed to a mount 8. A strain detecting sensor 3 is provided on the torque measuring shaft 1, and the screw tightening torque is taken out as an output of the strain detecting sensor 3. The mounting table 8 is mounted on the carrier table 13. As shown in FIG. 3, the transfer table 13 is placed on the transfer means 12 of the screw tightening line, transferred together with the transfer table 13a on which the screw tightening target work is placed, and positioned at the screw tightening position. In this case, the head portion 4a of the sample screw 4 is preferably the same type as the head portion of the screw used. Further, in the present embodiment, the torque measuring shaft 1 is vertically fixed to the mounting base 8 with the sample screw 4 on the upper side. Alternatively, it may be attached in an oblique direction.
【0022】図3は、図1、図2に示したネジ締めトル
ク測定ユニットAを使用する本発明のネジ締めトルク測
定方法の第1実施例を使用するネジ締めラインを示すブ
ロック図である。FIG. 3 is a block diagram showing a screw tightening line using the first embodiment of the screw tightening torque measuring method of the present invention using the screw tightening torque measuring unit A shown in FIGS.
【0023】図3において、ネジ締めトルク測定ユニッ
トAは搬送台13に固定されており、この搬送台13に
は表示手段14も搭載されている。ネジ締めラインは、
ネジ締めを行うネジ締め機10と、ネジ締め機10のネ
ジ締め動作を制御するネジ締め制御部11と、生産ライ
ンに使用される搬送手段12と、ネジ締め対象ワークを
載置した搬送台13aと、前記のネジ締めトルク測定ユ
ニットAと表示手段14とが搭載された搬送台13とを
有する。In FIG. 3, the screw tightening torque measuring unit A is fixed to a carrier 13, and the carrier 13 is also equipped with a display means 14. The screw tightening line is
A screw tightening machine 10 for tightening a screw, a screw tightening control section 11 for controlling a screw tightening operation of the screw tightening machine 10, a transfer means 12 used in a production line, and a transfer table 13a on which a screw tightening target work is placed. And a carrier table 13 on which the screw tightening torque measuring unit A and the display means 14 are mounted.
【0024】次に、本実施例の動作を図1〜図3に基づ
いて説明する。Next, the operation of this embodiment will be described with reference to FIGS.
【0025】図3に示すように、ネジ締めラインでは、
ネジ締め対象ワークが搬送台13a上に載置され、搬送
手段12がこれらの搬送台13aを搬送して各ネジ締め
機10のネジ締め位置に位置決めし、各ネジ締め機10
が制御部11にネジ締め条件を制御されてネジ締めを行
う。As shown in FIG. 3, in the screw tightening line,
The workpiece to be screw-fastened is placed on the carrier 13a, and the carrier 12 carries the carrier 13a and positions it at the screw tightening position of each screw tightener 10.
The screw tightening conditions are controlled by the controller 11 to tighten the screw.
【0026】この場合、本実施例では、各ネジ締め機1
0の最終締め付けトルクの精度保証を行うために、ネジ
締め対象ワークを載置した搬送台13aの所定台数毎
に、ネジ締めトルク測定ユニットAと表示手段14とを
搭載した搬送台13を生産ラインに混入する。このよう
にすると、各ネジ締め機10は、ネジ締めトルク測定ユ
ニットAと表示手段14とを搭載した搬送台13が位置
決めされると、サンプルネジを締め付ける作業を行い、
その際に発生する最終締め付けトルクが表示手段に表示
されるので、作業者は、各ネジ締め機10の実際の最終
締め付けトルクを正確に確認することができる。この場
合、サンプルネジ4のヘッド部4aを使用されるネジの
ヘッド部と同型にしておくと、最終締め付けトルクの精
度保証の信頼性が向上する。In this case, in this embodiment, each screw tightening machine 1
In order to guarantee the accuracy of the final tightening torque of 0, the transport line 13 having the screw tightening torque measurement unit A and the display means 14 is provided on the production line for each predetermined number of the transport tables 13a on which the workpieces to be screwed are placed. Mix in. By doing so, each screw tightening machine 10 performs a work of tightening the sample screw when the carrier 13 on which the screw tightening torque measuring unit A and the display means 14 are mounted is positioned.
Since the final tightening torque generated at that time is displayed on the display means, the operator can accurately confirm the actual final tightening torque of each screw tightening machine 10. In this case, if the head portion 4a of the sample screw 4 is made to have the same shape as the head portion of the screw to be used, the reliability of accuracy guarantee of the final tightening torque is improved.
【0027】ネジ締めラインに多数のネジ締め機10が
設置されていても、ネジ締めトルク測定ユニットAと表
示手段14とを搭載した搬送台13が1台あれば、全ネ
ジ締め機10の最終締め付けトルクの精度保証が可能に
なる。Even if a large number of screw tightening machines 10 are installed on the screw tightening line, if there is only one carrier 13 on which the screw tightening torque measuring unit A and the display means 14 are mounted, the final screw tightening machine 10 can be installed. The accuracy of tightening torque can be guaranteed.
【0028】そして、本発明のネジ締めトルク測定ユニ
ットAは、トルクを測定したい時にのみ使用されるの
で、前記トルク検出センサ3の耐久性が良くなくても、
測定の信頼性を長く維持でき、従来例における測定値の
信頼性の問題点を解決できる。勿論、本発明のネジ締め
トルク測定ユニットAは、実施例の構造に限らず、その
設計は自由である。例えば、トルク測定軸1と歪み検出
センサ3とにカバー部を取り付け、歪み検出センサ3の
出力を取り出すのに、スリップリングやブラシを使用し
ても良い。Since the screw tightening torque measuring unit A of the present invention is used only when it is desired to measure the torque, even if the torque detecting sensor 3 has poor durability,
The reliability of measurement can be maintained for a long time, and the problem of reliability of measured values in the conventional example can be solved. Needless to say, the screw tightening torque measurement unit A of the present invention is not limited to the structure of the embodiment, and its design is free. For example, a cover portion may be attached to the torque measuring shaft 1 and the strain detection sensor 3, and a slip ring or a brush may be used to take out the output of the strain detection sensor 3.
【0029】本発明のネジ締めトルク測定ユニットの一
例を使用するネジ締めトルク測定方法の第2実施例を図
1、図2、図4に基づいて説明する。A second embodiment of a screw tightening torque measuring method using an example of the screw tightening torque measuring unit of the present invention will be described with reference to FIGS. 1, 2 and 4.
【0030】図1、図2は第1実施例と同様なので説明
を省略する。1 and 2 are similar to those of the first embodiment, the description thereof will be omitted.
【0031】図4は、図1、図2に示したネジ締めトル
ク測定ユニットAを使用する本発明のネジ締めトルク測
定方法の第2実施例を使用するネジ締めラインを示すブ
ロック図である。FIG. 4 is a block diagram showing a screw tightening line using a second embodiment of the screw tightening torque measuring method of the present invention using the screw tightening torque measuring unit A shown in FIGS.
【0032】図4において、ネジ締めトルク測定ユニッ
トAは搬送台13に固定されており、この搬送台13に
は送信手段15も搭載されている。ネジ締めラインは、
ネジ締めを行うネジ締め機10と、ネジ締め機10のネ
ジ締め動作を制御するネジ締め制御部11と、生産ライ
ンに使用される搬送手段12と、ネジ締め対象ワークを
載置した搬送台13aと、前記のトルク測定ユニットA
と送信手段15とが搭載された搬送台13とを有し、更
に、送信手段15が送信する測定結果を受信する受信手
段16と、受信された測定結果と目標値とを比較して校
正値を演算し、制御部11に教示する校正手段17とを
有する。In FIG. 4, the screw tightening torque measuring unit A is fixed to the carrier 13, and the carrier 13 is also equipped with a transmitting means 15. The screw tightening line is
A screw tightening machine 10 for tightening a screw, a screw tightening control section 11 for controlling a screw tightening operation of the screw tightening machine 10, a transfer means 12 used in a production line, and a transfer table 13a on which a screw tightening target work is placed. And the above torque measuring unit A
And a transmitter 13 on which a transmitter 15 is mounted, and further a receiver 16 for receiving the measurement result transmitted by the transmitter 15 and a calibration value by comparing the received measurement result with a target value. And calibrating means 17 for teaching to the control unit 11.
【0033】次に、本実施例の動作を図1、図2、図4
に基づいて説明する。Next, the operation of this embodiment will be described with reference to FIGS.
It will be described based on.
【0034】ネジ締めトルク測定ユニットAの測定結果
がでるまでは、第1実施例と同様なので説明を省略す
る。Until the measurement result of the screw tightening torque measuring unit A is obtained, it is the same as that of the first embodiment, and the description thereof will be omitted.
【0035】出された測定結果は、送信手段15により
外部に送信される。送信された測定結果は、受信手段1
6を介して校正手段17に転送される。校正手段17
は、転送された測定結果と目標値とから校正値を演算し
て、制御部11に教示を行う。測定結果の転送が終了し
た後、搬送台13は搬送手段12により、次の工程に移
動する。図4に示すように、複数のネジ締め機10が存
在する場合には、上記と同様の処理を繰り返す。The output measurement result is transmitted to the outside by the transmitting means 15. The transmitted measurement result is received by the receiving means 1.
It is transferred to the calibration means 17 via 6. Calibration means 17
Calculates a calibration value from the transferred measurement result and the target value, and teaches the control unit 11. After the transfer of the measurement results is completed, the carrier table 13 is moved to the next step by the carrier means 12. As shown in FIG. 4, when there are a plurality of screw tighteners 10, the same processing as above is repeated.
【0036】尚、送信方法は、接点を設けた有線送信方
法、送受信部を対向させる光通信方法、無線送信方法等
の何れでも良い。従って、受信手段16の数と位置とは
任意に設定できる。The transmission method may be any of a wired transmission method provided with a contact, an optical communication method in which transmission / reception units are opposed to each other, a wireless transmission method and the like. Therefore, the number and position of the receiving means 16 can be set arbitrarily.
【0037】本発明のネジ締めトルク測定ユニットの一
例を使用するネジ締めトルク測定方法の第3実施例を図
1、図2、図5に基づいて説明する。A third embodiment of a screw tightening torque measuring method using an example of the screw tightening torque measuring unit of the present invention will be described with reference to FIGS. 1, 2 and 5.
【0038】図1、図2は第1実施例と同様なので説明
を省略する。Since FIGS. 1 and 2 are the same as the first embodiment, the description thereof will be omitted.
【0039】図5は、図1、図2に示したネジ締めトル
ク測定ユニットAを使用する本発明のネジ締めトルク測
定方法の第3実施例を使用するネジ締めラインを示すブ
ロック図である。FIG. 5 is a block diagram showing a screw tightening line using a third embodiment of the screw tightening torque measuring method of the present invention using the screw tightening torque measuring unit A shown in FIGS.
【0040】図5において、ネジ締めトルク測定ユニッ
トAは搬送台13に固定されており、この搬送台13に
は送信手段15と記憶手段18とが搭載されている。ネ
ジ締めラインは、ネジ締めを行うネジ締め機10と、ネ
ジ締め機10のネジ締め動作を制御するネジ締め制御部
11と、生産ラインに使用される搬送手段12と、ネジ
締め対象ワークを載置した搬送台13aと、前記のネジ
締めトルク測定ユニットAと送信手段15と記憶手段1
8とが搭載された搬送台13とを有し、更に、送信手段
15が送信する測定結果を受信する受信手段16と、受
信された測定結果と目標値とを比較して校正値を演算
し、制御部11に教示する校正手段17とを有する。In FIG. 5, the screw tightening torque measuring unit A is fixed to the carrier 13, and the carrier 13 is equipped with the transmitting means 15 and the storing means 18. The screw tightening line includes a screw tightening machine 10 for tightening a screw, a screw tightening control section 11 for controlling the screw tightening operation of the screw tightening machine 10, a transfer means 12 used in a production line, and a screw tightening target work. The placed carrier table 13a, the screw tightening torque measuring unit A, the transmitting means 15, and the storing means 1
8 is mounted on the carrier table 13, and the receiving means 16 for receiving the measurement result transmitted by the transmitting means 15 and the received measurement result and the target value are compared to calculate a calibration value. , And calibration means 17 for teaching the control unit 11.
【0041】次に、本実施例の動作を図1、図2、図5
に基づいて説明する。Next, the operation of this embodiment will be described with reference to FIGS.
It will be described based on.
【0042】ネジ締めトルク測定ユニットAの測定結果
がでるまでは、第1実施例と同様なので説明を省略す
る。Until the measurement result of the screw tightening torque measuring unit A is obtained, it is the same as that of the first embodiment, and the description thereof will be omitted.
【0043】出された測定結果は、記憶手段18に記憶
される。測定結果の記憶が終了した後、搬送台13は搬
送手段12により次の工程へ移動する。複数のネジ締め
機10の締め付けトルクの測定と記憶とが終了した後、
記憶手段18が記憶する測定結果が送信手段15により
外部に送信される。送信された測定結果は、受信手段1
6を介して校正手段17に転送される。校正手段17
は、転送されたてきた測定結果と目標値とから校正値を
演算して、複数の制御部11に教示を行う。The output measurement result is stored in the storage means 18. After the storage of the measurement results is completed, the carrier 13 is moved to the next step by the carrier means 12. After the measurement and storage of the tightening torques of the plurality of screw tighteners 10 are completed,
The transmission unit 15 transmits the measurement result stored in the storage unit 18 to the outside. The transmitted measurement result is received by the receiving means 1.
It is transferred to the calibration means 17 via 6. Calibration means 17
Calculates a calibration value from the transferred measurement result and the target value, and teaches the plurality of control units 11.
【0044】尚、送信方法は、接点を設けた有線送信方
法、送受信部を対向させる光通信方法、無線送信方法等
の何れでも良い。従って、受信手段16の数と位置とは
任意に設定できる。The transmission method may be any of a wired transmission method having a contact, an optical communication method in which transmission / reception units are opposed to each other, and a wireless transmission method. Therefore, the number and position of the receiving means 16 can be set arbitrarily.
【0045】[0045]
【発明の効果】本願第1発明のネジ締めトルク測定方法
と本願第4発明のネジ締めトルク測定ユニットは、トル
ク測定が必要な時のみの測定になり、トルク検出精度の
経時変化が小さくなり、従来技術に比較して、測定の信
頼性を長く維持できるという効果を奏する。The screw tightening torque measuring method of the first invention of the present application and the screw tightening torque measuring unit of the fourth invention of the present application enable measurement only when torque measurement is necessary, and the change in torque detection accuracy with time is reduced. Compared with the conventional technique, the effect that the reliability of measurement can be maintained for a long time is achieved.
【0046】締め付けトルクを、従来技術では、ネジ締
め作業時、又は、製品の抜取り検査で測定しているの
で、測定結果が製品のバラツキを含むことになり、測定
結果をネジ締め機の調整に使用するのに判断に困ること
があるが、本発明では、ネジ締め機自身の締め付けトル
クを測定できるので、ネジ締め機の調整における判断が
明快になるという効果を奏する。In the prior art, the tightening torque is measured during the screw tightening work or in the product sampling inspection, so that the measurement results include product variations, and the measurement results are used for adjusting the screw tightening machine. Although it may be difficult to make a judgment when using the screw tightener, the present invention has an effect that the tightening torque of the screw tightener itself can be measured, so that the judgment in adjusting the screw tightener becomes clear.
【0047】トルク測定軸を搬送台に固定しているの
で、ネジ締め工程中に、一つのトルク測定軸で、複数の
ネジ締め機の締め付けトルクを測定できるという効果を
奏する。Since the torque measuring shaft is fixed to the carrier, it is possible to measure the tightening torques of a plurality of screw tighteners with one torque measuring shaft during the screw tightening process.
【0048】本願第2発明のネジ締めトルク測定方法
と、本願第5発明のネジ締めトルク測定ユニットとは、
本願第1又は第4発明の作用に加えて、測定結果を表示
するので、作業者の確認が容易であるという効果を奏す
る。The screw tightening torque measuring method of the second invention of the present application and the screw tightening torque measuring unit of the fifth invention of the present application are
In addition to the operation of the first or fourth invention of the present application, since the measurement result is displayed, there is an effect that the operator can easily confirm.
【0049】本願第3発明のネジ締めトルク測定方法
と、本願第6発明のネジ締めトルク測定ユニットとは、
本願第1又は第4発明の作用に加えて、測定結果をネジ
締め機の制御にフィードバックするので、制御の自動化
が可能になるという効果を奏する。The screw tightening torque measuring method of the third invention of the present application and the screw tightening torque measuring unit of the sixth invention of the present application are
In addition to the operation of the first or fourth invention of the present application, since the measurement result is fed back to the control of the screw tightening machine, the control can be automated.
【図1】本発明のネジ締めトルク測定ユニット一実施例
の一部断面側面図である。FIG. 1 is a partial sectional side view of an embodiment of a screw tightening torque measurement unit of the present invention.
【図2】本発明のネジ締めトルク測定ユニット一実施例
の斜視図である。FIG. 2 is a perspective view of an embodiment of a screw tightening torque measurement unit of the present invention.
【図3】本発明のネジ締めトルク測定ユニットを使用す
るネジ締めトルク測定方法の第1実施例を示すブロック
図である。FIG. 3 is a block diagram showing a first embodiment of a screw tightening torque measuring method using the screw tightening torque measuring unit of the present invention.
【図4】本発明のネジ締めトルク測定ユニットを使用す
るネジ締めトルク測定方法の第2実施例を示すブロック
図である。FIG. 4 is a block diagram showing a second embodiment of a screw tightening torque measuring method using the screw tightening torque measuring unit of the present invention.
【図5】本発明のネジ締めトルク測定ユニットを使用す
るネジ締めトルク測定方法の第3実施例を示すブロック
図である。FIG. 5 is a block diagram showing a third embodiment of a screw tightening torque measuring method using the screw tightening torque measuring unit of the present invention.
A ネジ締めトルク測定ユニット 1 トルク測定軸 2 カバー部 3 歪み検出センサ 4 サンプルネジ 4a ヘッド部(噛合い部) 5 スリップリング(伝達機構) 6 ブラシ(伝達機構) 7 リード線(伝達機構) 8 取付台 10 ネジ締め機 11 制御部 12 搬送手段 13 搬送台 14 表示手段 15 送信手段 16 受信手段 17 校正手段 18 記憶手段 A Screw tightening torque measuring unit 1 Torque measuring shaft 2 Cover part 3 Strain detecting sensor 4 Sample screw 4a Head part (meshing part) 5 Slip ring (transmission mechanism) 6 Brush (transmission mechanism) 7 Lead wire (transmission mechanism) 8 Mounting Base 10 Screw tightener 11 Control unit 12 Conveying means 13 Conveying base 14 Display means 15 Transmitting means 16 Receiving means 17 Calibration means 18 Storage means
Claims (6)
合い部を有し、且つ、歪み検出センサを備えたトルク測
定軸を生産ラインの搬送手段に搬送される搬送台に取付
け、前記搬送台を前記搬送手段で前記生産ラインのネジ
締め機のネジ締め位置に位置決めし、ネジ締め機の最終
締め付けトルクを測定することを特徴とするネジ締めト
ルク測定方法。A torque measuring shaft having a meshing portion that meshes with a tip of a bit of a screw tightening machine and having a strain detection sensor is attached to a carrier table to be conveyed to a conveying means of a production line. Is determined at the screw tightening position of the screw tightening machine of the production line by the conveying means, and the final tightening torque of the screw tightening machine is measured.
合い部を有し、且つ、歪み検出センサを備えたトルク測
定軸を生産ラインの搬送手段に搬送される搬送台に取付
け、前記搬送台を前記搬送手段で前記生産ラインのネジ
締め機のネジ締め位置に位置決めし、ネジ締め機の最終
締め付けトルクを測定し、測定結果を表示することを特
徴とするネジ締めトルク測定方法。2. A torque measuring shaft having a meshing portion that meshes with a tip of a bit of a screw tightening machine and having a strain detecting sensor is attached to a carrier table to be conveyed to a conveying means of a production line. Is positioned at the screw tightening position of the screw tightening machine of the production line by the conveying means, the final tightening torque of the screw tightening machine is measured, and the measurement result is displayed.
合い部を有し、且つ、歪み検出センサを備えたトルク測
定軸を生産ラインの搬送手段に搬送される搬送台に取付
け、前記搬送台を前記搬送手段で前記生産ラインのネジ
締め機のネジ締め位置に位置決めし、ネジ締め機の最終
締め付けトルクを測定し、測定結果を前記ネジ締め機の
制御にフィードバックすることを特徴とするネジ締めト
ルク測定方法。3. A torque measuring shaft having a meshing portion that meshes with the tip of a bit of a screw tightening machine, and a torque measuring shaft equipped with a strain detecting sensor is attached to a carrier table to be conveyed to a conveying means of a production line. Is positioned at the screw tightening position of the screw tightener of the production line by the conveying means, the final tightening torque of the screw tightener is measured, and the measurement result is fed back to the control of the screw tightener. Torque measuring method.
ネジ締め機のビットの先端と噛み合う噛合い部を有し、
且つ、前記取付台に固定されているトルク測定軸と、前
記トルク測定軸の歪みを検出する歪み検出センサとを有
することを特徴とするネジ締めトルク測定ユニット。4. A mounting base fixed at a torque measuring position,
Has a meshing part that meshes with the tip of the bit of the screw tightener,
Further, a screw tightening torque measuring unit comprising a torque measuring shaft fixed to the mount and a strain detecting sensor detecting a strain of the torque measuring shaft.
ネジ締め機のビットの先端と噛み合う噛合い部を有し、
且つ、前記取付台に固定されているトルク測定軸と、前
記トルク測定軸の歪みを検出する歪み検出センサと、測
定結果の表示手段とを有することを特徴とするネジ締め
トルク測定ユニット。5. A mounting base fixed at a torque measuring position,
Has a meshing part that meshes with the tip of the bit of the screw tightener,
A screw tightening torque measuring unit comprising a torque measuring shaft fixed to the mount, a strain detecting sensor for detecting a strain of the torque measuring shaft, and a measurement result display means.
ネジ締め機のビットの先端と噛み合う噛合い部を有し、
且つ、前記取付台に固定されているトルク測定軸と、前
記トルク測定軸の歪みを検出する歪み検出センサと、測
定結果を外部機器に送信する手段とを有することを特徴
とするネジ締めトルク測定ユニット。6. A mounting base fixed at a torque measuring position,
Has a meshing part that meshes with the tip of the bit of the screw tightener,
Further, the screw tightening torque measurement is characterized by having a torque measuring shaft fixed to the mounting base, a strain detecting sensor for detecting a strain of the torque measuring shaft, and means for transmitting a measurement result to an external device. unit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP00940395A JP3383715B2 (en) | 1995-01-25 | 1995-01-25 | Screw tightening torque measuring method and its torque measuring unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP00940395A JP3383715B2 (en) | 1995-01-25 | 1995-01-25 | Screw tightening torque measuring method and its torque measuring unit |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH08201194A true JPH08201194A (en) | 1996-08-09 |
JP3383715B2 JP3383715B2 (en) | 2003-03-04 |
Family
ID=11719461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP00940395A Expired - Fee Related JP3383715B2 (en) | 1995-01-25 | 1995-01-25 | Screw tightening torque measuring method and its torque measuring unit |
Country Status (1)
Country | Link |
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JP (1) | JP3383715B2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2947471A1 (en) * | 2009-07-01 | 2011-01-07 | Peugeot Citroen Automobiles Sa | Screwing characteristics controlling unit for screwing station used to carry out locking of semi-running gears of motor vehicle, has adaptor sleeve connected to screwing unit for starting screwing operation |
FR2948191A1 (en) * | 2009-07-16 | 2011-01-21 | Peugeot Citroen Automobiles Sa | Failure torque determining method for screw i.e. sheet metal screw, involves screwing screw in threading part until head of screw is stopped against blocks, and determining failure tightening torque of screw |
CN103852205A (en) * | 2014-01-24 | 2014-06-11 | 昆山洺九机电有限公司 | Anti-overloading torsion sensor |
CN104132766A (en) * | 2014-08-01 | 2014-11-05 | 昆山市创新科技检测仪器有限公司 | High-precision torque detection device |
-
1995
- 1995-01-25 JP JP00940395A patent/JP3383715B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2947471A1 (en) * | 2009-07-01 | 2011-01-07 | Peugeot Citroen Automobiles Sa | Screwing characteristics controlling unit for screwing station used to carry out locking of semi-running gears of motor vehicle, has adaptor sleeve connected to screwing unit for starting screwing operation |
FR2948191A1 (en) * | 2009-07-16 | 2011-01-21 | Peugeot Citroen Automobiles Sa | Failure torque determining method for screw i.e. sheet metal screw, involves screwing screw in threading part until head of screw is stopped against blocks, and determining failure tightening torque of screw |
CN103852205A (en) * | 2014-01-24 | 2014-06-11 | 昆山洺九机电有限公司 | Anti-overloading torsion sensor |
CN104132766A (en) * | 2014-08-01 | 2014-11-05 | 昆山市创新科技检测仪器有限公司 | High-precision torque detection device |
Also Published As
Publication number | Publication date |
---|---|
JP3383715B2 (en) | 2003-03-04 |
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