JPH1194662A - Measuring device for screw fastening force and fastening torque - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately and simultaneously measure a screw fastening force and fastening torque, while easily dealing with various fastening conditions and making miniaturization and weight reduction of a measuring device possible. SOLUTION: This device 1 has: support 2 having a screw through hole 6 therethrough and supporting a seat plate A on its upper surface and having a pair of fulcrums 8, 8 on its lower surface; a load cell 10 adjoining to the support 2 at the fulcrum 8 and provided with pairs of strain gages G in the vicinity of the upper and lower openings of the screw hole 11 and having a greater fulcrum-to-fulcrum distance than that of the fulcrums 8, 8; a fulcrum member 12 adjoining to the load cell 10 at a pair of fulcrums 14; and a torque transfer jig 20 adjoining to the member 12 and supporting an internally threaded member B on its upper surface. A screw N is passed through the through hole 6 or the like from the seat plate A and threaded into an internally threaded hole in the internally threaded member B, and the support 2, the load cell 10, the fulcrum member 12, and the jig 20 are rotatably supported by a bearing 29, and the jig 20 is coupled by a plurality of pins 32 to the disc 34 of a torque meter 42 having a torque detecting part 40.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は、例えばアルミサッ
シにおける枠材や障子を形成するアルミ形材同士や、或
いは部品とアルミ形材を結合するネジの締付力及び締付
トルク測定装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for measuring a tightening force and a tightening torque of a screw for connecting a frame member or an aluminum shape member forming a frame or a shoji in an aluminum sash.

【０００２】[0002]

【従来の技術】一般に、ネジの締付力と締付トルクを測
定するには、例えば図７に示す測定装置１００が用いら
れる。即ち、ネジＮは上方から頂部材１０２に支持され
た座板１０４を貫通し、内部に立設する中空箱１０６の
天井部分に回転不能に嵌め込まれた雌ネジ部材１０８の
雌ネジ孔に螺入する。尚、上記雌ネジ部材１０８は、平
板に雌ネジ孔を有する円柱部１０９を固着したものであ
る。そして、図示しないドライバでネジＮを締付けると
共に、上記中空箱１０６の底部分から垂下する垂直片１
１０に貼付けた締付力測定用の歪みゲージ１１２におけ
る垂直方向の変化から締付力が測定される。2. Description of the Related Art In general, a measuring device 100 shown in FIG. 7 is used for measuring a tightening force and a tightening torque of a screw. That is, the screw N penetrates the seat plate 104 supported by the top member 102 from above, and is screwed into the female screw hole of the female screw member 108 which is non-rotatably fitted into the ceiling of the hollow box 106 erected inside. I do. The female screw member 108 is formed by fixing a cylindrical portion 109 having a female screw hole to a flat plate. Then, the screw N is tightened by a driver (not shown), and the vertical piece 1 hanging from the bottom of the hollow box 106 is formed.
The tightening force is measured from a change in the vertical direction of the strain gauge 112 for measuring the tightening force attached to 10.

【０００３】また、上記垂直片１１０を支持するベース
１１８上の支持部１１４内において、垂直片１１０に貼
付けたトルク測定用の歪みゲージ１１６における変化に
よりネジＮの締付トルクが測定される。ところで、上記
測定装置１００では、ネジＮの締付力は雌ネジ部材１０
８と中空箱１０６を介した垂直片１１０の上記歪みゲー
ジ１１２により測定されるが、ネジＮからの締付応力が
集中する雌ネジ部材１０８からかなり離れており、測定
誤差を生じることがある。また、この測定装置１００は
その構造が複雑で専用装置となり、且つ大型で重量も大
きくなりがちである。Further, in a support portion 114 on a base 118 for supporting the vertical piece 110, a tightening torque of the screw N is measured by a change in a strain gauge 116 for torque measurement attached to the vertical piece 110. By the way, in the measuring device 100, the tightening force of the screw N is
8 is measured by the strain gauge 112 of the vertical piece 110 through the hollow box 106, but it is considerably far from the female screw member 108 on which the tightening stress from the screw N is concentrated, which may cause a measurement error. Further, the measuring device 100 has a complicated structure, is a dedicated device, and tends to be large and heavy.

【０００４】しかも、測定時に前記ドライバはモータ等
に連結され、一定の低速度によりネジＮを回転させる
が、実際の作業は作業者がドライバを手動で操作する。
一方、上記測定装置１００によって、機械式の回転によ
るネジＮの誤差を含む締付力と締付トルクの相関グラフ
を測定し作成し得ても、適正な締付け範囲を把握した
り、設定しにくい。従って、作業標準として活用するこ
とも困難な場合があった。更に、上記測定装置１００で
は、測定すべきネジＮの材質や直径、或いはネジＮと螺
合する雌ネジ部材１０８の板厚や形状、更にはその締付
・支持条件が限定されるため、種々の締付条件に対応す
ることも困難であった。[0004] In addition, the driver is connected to a motor or the like at the time of measurement, and rotates the screw N at a constant low speed. However, in actual work, an operator manually operates the driver.
On the other hand, even if the correlation graph of the tightening force and the tightening torque including the error of the screw N due to the mechanical rotation can be measured and created by the measuring device 100, it is difficult to grasp or set an appropriate tightening range. . Therefore, it was sometimes difficult to utilize it as a work standard. Further, in the measuring device 100, since the material and diameter of the screw N to be measured, or the thickness and shape of the female screw member 108 to be screwed with the screw N, and the tightening and supporting conditions thereof are limited, It was also difficult to meet the tightening conditions.

【０００５】[0005]

【発明が解決すべき課題】本発明は、上記従来の技術の
問題点を解決し、ネジの締付力と締付トルクを正確に測
定でき、種々の締付条件に対応することも容易にすると
共に、小型で軽量化が可能なネジの締付力及び締付トル
ク測定装置を提供することを目的とする。SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, can accurately measure the tightening force and tightening torque of a screw, and can easily cope with various tightening conditions. It is another object of the present invention to provide a screw tightening force and tightening torque measuring device that is small and lightweight.

【０００６】[0006]

【課題を解決するための手段】本発明は、上記課題を解
決するため、ネジの締付けによる締付力測定部側の支持
部における集中荷重を避けること、及び雌ネジ部材の支
持部を各種の締付条件に対応し易くすることに着想して
成されたものである。即ち、本発明のネジの締付力と締
付トルク測定装置は、ネジ貫通孔を中心に有し、一側面
に被結合材に相当する座板等を回転不能に支持する支持
部を、他側面に一対の支点を有する支持具と、中心に設
けたネジ貫通孔の両側面の開口部付近に互いに平行する
一対の歪ゲージをそれぞれ設け、且つ上記支持具の支点
が接する側面と反対側の側面において、上記支持具にお
ける支点間距離よりも大きい支点間距離を有する締付力
測定用ロードセルと、ネジ貫通孔を略中心に有し、上記
ロードセルと一対の支点を介して隣接する支点部材と、
上記支点部材に隣接し、且つ一側面に被結合材に相当す
る雌ネジ部材を回転不能に支持するトルク伝達用治具
と、を有し、上記支持具とロードセルを互いに平行にし
て支持具の支点により自由支持し、測定すべきネジを上
記座板側から貫通し、且つ上記各ネジ貫通孔を貫通して
上記雌ネジ部材の雌ネジ孔内に螺入すると共に、上記支
持具、ロードセル、支点部材、及びトルク伝達用治具と
をベアリング等を介して回転可能に支持し、且つトルク
伝達用治具とトルク検出部を有するトルクメータの負荷
部とを複数のピン等にて結合した、ことを特徴とする。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention avoids a concentrated load on a support portion on a side of a tightening force measuring portion by tightening a screw, and uses various types of support portions for a female screw member. The idea was to make it easier to cope with the tightening conditions. That is, the screw tightening force and tightening torque measuring device of the present invention has a screw through hole at the center, and a support portion that non-rotatably supports a seat plate or the like corresponding to a material to be joined on one side, A support tool having a pair of fulcrums on the side surface, and a pair of strain gauges parallel to each other near the openings on both sides of the screw through hole provided at the center, respectively, and a side opposite to the side face where the fulcrum of the support tool contacts On the side surface, a load cell for tightening force measurement having a distance between fulcrums greater than the distance between fulcrums in the support, and a fulcrum member having a screw through hole substantially at the center and adjacent to the load cell via a pair of fulcrums. ,
A torque transmitting jig adjacent to the fulcrum member, and supporting, on one side, a female screw member corresponding to a material to be joined, such that the support and the load cell are parallel to each other; Freely supported by a fulcrum, the screw to be measured penetrates from the side of the seat plate, and penetrates through each of the screw through holes and is screwed into the female screw hole of the female screw member, and the support tool, the load cell, The fulcrum member, and the torque transmitting jig are rotatably supported via bearings and the like, and the torque transmitting jig and the load section of the torque meter having the torque detecting section are connected by a plurality of pins or the like. It is characterized by the following.

【０００７】この装置によれば、ネジの締付けにより上
記ロードセルが曲げ応力を受けても支持具の支点間距離
分は検出荷重が一定となるので、ロードセルに貼付けた
歪みゲージの位置が多少ずれても、該歪みゲージが上記
支点間距離の範囲内に設けてあれば、正確且つ確実に締
付力を測定することができる。また、ネジは雌ネジ部材
に螺合できるものであれば、直径や長さが変化しても測
定することができる。尚、本明細書において、ネジとは
雄ネジ部分とドライバやレンチに係合するボルト頭等を
有するボルトを指し、例えば雌ネジ部材の貫通孔内に自
ら雌ネジ部分を形成するタッピングスクリューボルトも
含まれる。According to this device, even if the load cell is subjected to bending stress by tightening the screw, the detected load is constant for the distance between the fulcrums of the support, so that the position of the strain gauge attached to the load cell is slightly shifted. In addition, if the strain gauge is provided within the range of the fulcrum distance, the tightening force can be accurately and reliably measured. In addition, as long as the screw can be screwed into the female screw member, it can be measured even if the diameter or length changes. In the present specification, a screw refers to a bolt having a male screw portion and a bolt head or the like that engages with a driver or a wrench. For example, a tapping screw bolt that forms a female screw portion by itself in a through hole of a female screw member is also used. included.

【０００８】また、締付力測定部が、前記支持具、ロー
ドセル、及び支点部材とからなり、締付トルク測定部
が、前記ピン等を受入れる複数の穴を有するトルク伝達
用治具を含み、且つこのトルク伝達用治具は前記ベアリ
ング等に支持されて、ネジの締付トルクを前記負荷部を
介して前記トルク検出部に伝達するネジの締付力及び締
付トルク測定装置も含まれる。この装置によれば、ネジ
の締付力と共に、締付トルクも同時に正確且つ確実に測
定することができる。The tightening force measuring unit includes the support, the load cell, and the fulcrum member, and the tightening torque measuring unit includes a torque transmitting jig having a plurality of holes for receiving the pins and the like. The torque transmitting jig is also supported by the bearing or the like, and includes a screw tightening force and tightening torque measuring device that transmits the screw tightening torque to the torque detecting unit via the load unit. According to this device, the tightening torque as well as the screw tightening force can be simultaneously and accurately measured.

【０００９】本発明の別のネジの締付力及び締付トルク
測定装置は、ネジ貫通孔を中心に有し、一側面に被結合
材に相当する座板等を回転不能に支持する支持部を、他
側面に一対の支点を有する支持具と、中心に設けたネジ
貫通孔の両側面の開口部付近に互いに平行する一対の歪
ゲージをそれぞれ設け、且つ上記支持具の支点が接する
側面と反対側の側面において、上記支持具における支点
間距離よりも大きい支点間距離を有する締付力測定用ロ
ードセルと、ネジ貫通孔を略中心に有し、上記ロードセ
ルと一対の支点を介して隣接する支点部材と、上記支点
部材に隣接し、且つ少なくとも一側面に被結合材に相当
する雌ネジ部材を回転不能に支持する支持部材と、上記
座板側から貫通するネジの頭に対し、下端にドライバ等
を有し、且つその上方の回転力受け部との間に歪みゲー
ジ等のトルク測定手段を有するトルク測定用センサと、
を有することを特徴とする。Another measuring apparatus for measuring the tightening force and tightening torque of a screw according to the present invention has a screw through hole at the center, and supports a seat plate or the like corresponding to a material to be joined on one side in a non-rotatable manner. A support tool having a pair of fulcrums on the other side, and a pair of strain gauges parallel to each other provided near the openings on both sides of the screw through hole provided at the center, and a side face where the fulcrum of the support tool contacts. On the opposite side surface, a load cell for tightening force measurement having a distance between fulcrums larger than the distance between fulcrums in the support, and a screw through hole substantially at the center, adjacent to the load cell via a pair of fulcrums A fulcrum member, a support member adjacent to the fulcrum member, and supporting at least one side surface of the female screw member corresponding to the material to be connected in a non-rotatable manner, and a lower end with respect to a head of a screw penetrating from the seat plate side. It has a driver etc. and its A sensor for torque measurement with a torque measuring means such as strain gauges between the rotational force receiving portion of the square,
It is characterized by having.

【００１０】この測定装置によれば、ネジの締付トルク
を上記ドライバと歪みゲージ等を有するトルク測定用セ
ンサにて正確且つ容易に測定できると共に、装置全体を
一層小型で軽量化でき、その設置スペースと製作コスト
を減らすことも可能となる。尚、上記歪みゲージは、リ
ード線を介して電気信号変換装置に接続される。また、
この歪みゲージに替えて締付トルクを直に電気信号に変
える圧電素子を設けたトルク測定用センサを用いること
もできる。更に、前記トルク伝達用治具又は前記支持部
材の中心部に前記雌ネジ部材を回転不能に収容して支持
する凹部を形成し、且つネジの中心軸と上記雌ネジ部材
の雌ネジ孔の中心軸が一致するネジの締付力及び締付ト
ルク測定装置も含まれる。この装置によれば、ネジと螺
合する雌ネジ部材の板厚や形状が変化しても、トルク伝
達用治具に容易にセットでき、正確な測定が可能とな
る。According to this measuring device, the tightening torque of the screw can be accurately and easily measured by the torque measuring sensor having the driver and the strain gauge, and the whole device can be further reduced in size and weight. Space and manufacturing costs can also be reduced. The strain gauge is connected to an electric signal converter via a lead wire. Also,
Instead of the strain gauge, a torque measuring sensor provided with a piezoelectric element that directly converts the tightening torque into an electric signal can be used. Further, a recess for accommodating and supporting the female screw member in a non-rotatable manner is formed in a center portion of the torque transmitting jig or the support member, and a center axis of the screw and a center of the female screw hole of the female screw member are formed. Also included is a device for measuring the tightening force and tightening torque of screws with matching axes. According to this device, even if the thickness or shape of the female screw member screwed with the screw changes, it can be easily set on the torque transmitting jig, and accurate measurement can be performed.

【００１１】また、前記トルク伝達用治具の凹部に収容
される雌ネジ部材が、該伝達用治具と隣接する前記支点
部材との間において、その雌ネジ孔を中心にして互いに
対称な複数の支点を介して接するネジの締付力及び締付
トルク測定装置も含まれる。この装置によれば、線対称
又は点対称等の種々の支持条件にして雌ネジ部材をトル
ク伝達用治具にセットでき、且つ正確な測定が可能とな
る。尚、前記支持具の支点間距離を、前記ロードセルの
支点間距離の２０％以上としたネジの締付力及び締付ト
ルク測定装置とすることもできる。この距離が２０％未
満では、ロードセルには集中荷重が掛り易くなり正確さ
を欠くためである。係る装置とした場合、ネジを締付け
た際にロードセルに生じる曲げモーメントが、支持具の
支点間距離の上記範囲内では一定になるので、ネジの締
付力が一層正確に且つ安定して測定できる。且つ、歪み
ゲージの貼付ける位置がずれても、ネジの締付力の測定
誤差を極小さく抑えることもできる。Further, a plurality of female screw members accommodated in the concave portion of the torque transmitting jig are symmetrically arranged between the transmitting jig and the adjacent fulcrum member with respect to the female screw hole. And a measuring device for measuring the tightening force and tightening torque of the screws contacting via the fulcrum. According to this device, the female screw member can be set on the torque transmitting jig under various support conditions such as line symmetry or point symmetry, and accurate measurement can be performed. It is also possible to provide a screw tightening force and tightening torque measuring device in which the distance between the fulcrums of the support is 20% or more of the distance between the fulcrums of the load cell. If the distance is less than 20%, a concentrated load is likely to be applied to the load cell, resulting in a lack of accuracy. In the case of such an apparatus, the bending moment generated in the load cell when the screw is tightened becomes constant within the above range of the fulcrum distance of the support, so that the screw tightening force can be measured more accurately and stably. . Further, even if the position where the strain gauge is attached is shifted, the measurement error of the screw tightening force can be suppressed to an extremely small value.

【００１２】[0012]

【実施の形態】以下において本発明の実施に好適な形態
を図面と共に説明する。図１，２は、本発明の一形態を
示す締付力及び締付トルク測定装置１の垂直断面図と分
解斜視図である。測定に用いるネジＮは、図１中の上方
に位置する例えばボール盤等の回転軸Ｓに固定されたド
ライバＤにより回転される。この締付力・トルク測定装
置１は、支持具２と、締付力測定用ロードセル１０と、
支点部材１２と、トルク伝達用治具２０と、トルクメー
タ４２等を含む。支持具２は全体が浅い正方形の皿状を
呈し、上面(一側面)にネジＮにて結合される一方の被結
合材に相当する座板Ａを回転不能に収容する凹み(支持
部)４と、その中心に穿設したネジ貫通孔６と、下面(他
側面)の左右の端縁に沿って平行な凸条からなる一対の
支点８，８を一体に有する。これらの支点８の下側は湾
曲面となっている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are a vertical sectional view and an exploded perspective view of a tightening force and tightening torque measuring device 1 showing one embodiment of the present invention. The screw N used for the measurement is rotated by a driver D fixed to a rotating shaft S such as a drilling machine located above in FIG. The tightening force / torque measuring device 1 includes a support 2, a load cell 10 for measuring a tightening force,
It includes a fulcrum member 12, a torque transmitting jig 20, a torque meter 42, and the like. The support 2 has a shallow square dish shape as a whole, and a recess (support portion) 4 for non-rotatably receiving a seat plate A corresponding to one of the members to be joined, which is joined to the upper surface (one side surface) by a screw N. And a screw through hole 6 formed at the center thereof, and a pair of fulcrums 8, 8 formed of parallel ridges along the left and right edges of the lower surface (other side surface). The lower side of these fulcrums 8 is a curved surface.

【００１３】また、上記支点８，８を介して下方に隣接
する上記ロードセル１０は、全体が略長方形の平板で、
その中心に穿設したネジ貫通孔１１の上下の開口部付近
には、この貫通孔１１を中心にして互いに対称で且つ平
行する一対の歪みゲージＧが上下両面(両側面)に合計二
対貼付けられている。互いに平行な上記支持具２とロー
ドセル１０は、支点８，８を介して相互に自由支持し合
っている。更に、上記ロードセル１０の下方に隣接する
支点部材１２も略長方形の平板で、その上面の左右の各
浅溝１６内には上側に湾曲面を有する凸条からなる一対
の支点１４の基部が固定され、且つその中心にネジ貫通
孔１８が形成されている。上記支点１４を介してロード
セル１０と支点部材１２は隣接し合う。また、上記支点
１４同士の支点間距離は、前記支持具２の支点８同士の
支点間距離よりも大きく設定される。具体的には、後者
の距離は前者の２０％以上(例えば４０％)とすれば、ネ
ジＮの締付によるロードセル１０への集中荷重を防ぎ易
くなる。The load cell 10 adjacent to the lower side via the fulcrums 8, 8 is a substantially rectangular flat plate as a whole.
In the vicinity of the upper and lower openings of the screw through hole 11 formed at the center thereof, a pair of strain gauges G symmetrical and parallel to each other with respect to the through hole 11 are stuck on both upper and lower surfaces (both side surfaces) in total of two pairs. Have been. The support 2 and the load cell 10 which are parallel to each other freely support each other via fulcrums 8,8. Further, the fulcrum member 12 adjacent to the lower side of the load cell 10 is also a substantially rectangular flat plate, and the bases of a pair of fulcrums 14 each having a curved surface on the upper side are fixed in the left and right shallow grooves 16 on the upper surface thereof. And a screw through hole 18 is formed at the center thereof. The load cell 10 and the fulcrum member 12 are adjacent to each other via the fulcrum 14. Further, the distance between the fulcrums of the fulcrums 14 is set larger than the distance between the fulcrums of the fulcrums 8 of the support 2. Specifically, if the distance of the latter is 20% or more (for example, 40%) of the former, it is easy to prevent the concentrated load on the load cell 10 due to the tightening of the screw N.

【００１４】また、上記支点部材１２の下方には、全体
が略円盤状のトルク伝達治具２０が隣接する。図２に示
すように、上面に角形の開口部２１を有するリング２２
が本治具２０の本体２３上の周辺に固定される。この本
体２３の上面(一側面)の中央には正方形の凹部２４が形
成され、ネジＮの他方の被結合材に相当する雌ネジ部材
Ｂが回転不能に収容され支持される。この部材Ｂの中心
には雌ネジ孔ｂが形成されている。尚、雌ネジ孔ｂとネ
ジＮの各中心軸は一致するように設定される。上記本体
２３と凹部２４との各中心となる位置には、ネジＮの雄
ネジ部の先端が進入する貫通孔２６が垂直に形成され
る。また、本体２３の下面の側方にはボールベアリング
２９の上部が嵌合される。このベアリング２９は、その
下部をリング盤３０上に嵌合され、円筒体３１と共にベ
ース４８上に固定されている。従って、上記ベアリング
２９により、支持具２、ロードセル１０、支点部材１
２、及び上記治具２０は、ベース４８に対して回転可能
に支持されている。Below the fulcrum member 12, a substantially disk-shaped torque transmitting jig 20 is adjacent. As shown in FIG. 2, a ring 22 having a square opening 21 on the upper surface.
Is fixed to the periphery of the jig 20 on the main body 23. A square concave portion 24 is formed at the center of the upper surface (one side surface) of the main body 23, and a female screw member B corresponding to the other material to be coupled of the screw N is accommodated and supported non-rotatably. A female screw hole b is formed at the center of the member B. The central axes of the female screw hole b and the screw N are set to coincide. A through-hole 26 into which the tip of the male screw portion of the screw N enters is formed vertically at the center of each of the main body 23 and the concave portion 24. The upper part of the ball bearing 29 is fitted to the side of the lower surface of the main body 23. The lower part of the bearing 29 is fitted on a ring disk 30 and is fixed on a base 48 together with the cylindrical body 31. Therefore, the support 2, the load cell 10, and the fulcrum member 1 are formed by the bearing 29.
The jig 20 and the jig 20 are rotatably supported with respect to the base 48.

【００１５】更に、上記治具２０の下面には、中心の貫
通孔２６に対し互いに対称に複数のピン穴２８が形成さ
れ、それぞれにピン３２の上半部が嵌合する。上記各ピ
ン３２の下半部は、円盤３４(負荷部)の上面に形成した
ピン穴３３内に嵌合される。この円盤３４の下方にはト
ルク検出部４０を有するトルクメータ４２が固定され
る。即ち、トルク検出部４０は、トルクメータ４２と共
に上下のフランジ盤３８，４４に接合され、上方のフラ
ンジ盤３８はボルト３６，ナット３７にて上記円盤３４
と結合される。且つ、トルク検出部４０は、下方のフラ
ンジ盤４４を貫通するボルト４６を介してベース４８に
固定される。従って、上記円盤３４は、ピン３２を介し
て前記治具２０からネジＮの回転に伴う締付トルクをト
ルク検出部４０に伝達し、この検出部４０に貼付けられ
た歪みゲージＧ等によりネジＮの締付トルクを検出す
る。Further, a plurality of pin holes 28 are formed on the lower surface of the jig 20 symmetrically with respect to the center through hole 26, and the upper half of the pin 32 is fitted into each of the holes. The lower half of each of the pins 32 is fitted into a pin hole 33 formed on the upper surface of the disk 34 (load portion). A torque meter 42 having a torque detector 40 is fixed below the disk 34. That is, the torque detector 40 is joined to the upper and lower flange disks 38 and 44 together with the torque meter 42, and the upper flange disk 38 is connected to the disk 34 by bolts 36 and nuts 37.
Combined with Further, the torque detector 40 is fixed to the base 48 via a bolt 46 penetrating the lower flange plate 44. Therefore, the disk 34 transmits the tightening torque associated with the rotation of the screw N from the jig 20 to the torque detector 40 via the pin 32, and the screw N is transmitted by the strain gauge G attached to the detector 40. Detect the tightening torque of.

【００１６】次に、この締付力・締付トルク測定装置１
の作用について説明する。先ず、ネジＮの雄ネジ部を座
板Ａ、支持具２、ロードセル１０、及び支点部材１２の
各ネジ貫通孔ａ，６，１１，１８を通し、雌ネジ部材Ｂ
の雌ネジ孔ｂの上端に位置させる。このネジＮの頭の＋
字溝にドライバＤの先端を挿入して、重り(図示せず)に
よる荷重Ｐを掛けながら、該ドライバＤを図示しないモ
ータと減速機により回転させる。すると、ネジＮの雄ネ
ジ部は、雌ネジ部材Ｂの雌ネジ孔ｂに螺合しつつ、図１
に示すように、その先端がこの雌ネジ孔ｂを貫通して、
トルク伝達治具２０の貫通孔２６内に進入する。そし
て、ネジＮの頭の下面が座板Ａの上面に接触し、且つあ
る程度の摩擦を生じると、適正な締付状態となり、ドラ
イバＤの回転を停止する。Next, the tightening force / tightening torque measuring device 1
The operation of will be described. First, the male screw portion of the screw N is passed through the screw holes A, 6, 11, and 18 of the seat plate A, the support 2, the load cell 10, and the fulcrum member 12, and the female screw member B
At the upper end of the female screw hole b. + Of the head of this screw N
The driver D is rotated by a motor and a speed reducer (not shown) while inserting the tip of the driver D into the groove and applying a load P by a weight (not shown). Then, while the male screw portion of the screw N is screwed into the female screw hole b of the female screw member B, FIG.
As shown in the figure, the tip penetrates this female screw hole b,
It enters the through hole 26 of the torque transmitting jig 20. When the lower surface of the head of the screw N comes into contact with the upper surface of the seat plate A and generates a certain amount of friction, a proper tightening state is established, and the rotation of the driver D is stopped.

【００１７】この間において、前記ロードセル１０に
は、これを支える一対の支点１４間において下向きの曲
げモーメントＭを受ける。且つ、ロードセル１０の上下
面に貼付けた二対の歪みゲージＧには、歪みが上面と下
面とで相違して表れる。これらの歪みゲージＧの接続方
法を工夫して歪み量を検出することにより、ネジＮの締
付力を連続して精度良く測定できる。ところで、図３に
示すように、ネジＮの締付力による荷重Ｐは、支持具２
の支点８，８を介してロードセル１０に伝達されるの
で、ロードセル１０が受ける曲げモーメントＭも上記一
対の支点８，８間においては一定(Ｍ.Ａ.)となる。即
ち、支点８，８間におけるロードセル１０には一定の荷
重Ｐが掛かるので、安定荷重となる。換言すれば、ネジ
Ｎの締付けによりロードセル１０の中心付近に発生する
集中荷重を排除するため、支持具２の支点８，８を活用
したものである。尚、支持具２はその変形を防ぐため、
剛性の高い鋼材等から製造される。During this time, the load cell 10 receives a downward bending moment M between a pair of supporting points 14 supporting the load cell. In addition, in the two pairs of strain gauges G attached to the upper and lower surfaces of the load cell 10, distortion appears differently between the upper surface and the lower surface. By detecting the amount of strain by devising a connection method of these strain gauges G, the tightening force of the screw N can be continuously and accurately measured. Incidentally, as shown in FIG. 3, the load P due to the tightening force of the screw N is
Are transmitted to the load cell 10 via the fulcrums 8, 8, so that the bending moment M received by the load cell 10 is also constant (MA) between the pair of fulcrums 8, 8. That is, since a constant load P is applied to the load cell 10 between the fulcrums 8, 8, the load becomes stable. In other words, the fulcrums 8, 8 of the support 2 are utilized in order to eliminate a concentrated load generated near the center of the load cell 10 due to the tightening of the screw N. Note that the support 2 is to prevent its deformation.
Manufactured from highly rigid steel.

【００１８】従って、この荷重Ｐによって曲げモーメン
トＭが一定となる上記支点８，８の間において、ロード
セル１０の上下面の二対の歪みゲージＧにより、ネジＮ
の締付力を正確且つ安定して測定することができる。し
かも、ネジＮの雄ネジ部に近接した位置に貼付けた二対
の歪みゲージＧにより測定するため、ネジＮの締付力を
精度良く測定できる。また、支点８，８間におけるロー
ドセル１０に掛かる荷重Ｐが一定になるので、各歪みゲ
ージＧを貼付ける位置が多少ずれても、測定される締付
力の誤差を小さくすることができる。Therefore, between the fulcrums 8, 8 at which the bending moment M is constant by the load P, the screw N is set by two pairs of strain gauges G on the upper and lower surfaces of the load cell 10.
Can be accurately and stably measured. Moreover, since the measurement is performed by the two pairs of strain gauges G attached to the positions close to the male screw portion of the screw N, the tightening force of the screw N can be accurately measured. Further, since the load P applied to the load cell 10 between the fulcrums 8, 8, the error of the measured tightening force can be reduced even if the position where each strain gauge G is pasted is slightly shifted.

【００１９】また、図１に示すように、ネジＮの締付に
伴い、その雄ネジ部が雌ネジ部材Ｂを上向きに引張り、
同時に支持具２、ロードセル１０、及び支点部材１２を
挟み付ける。すると、雌ネジ部材Ｂと支点部材１２との
間に生じる摩擦力によって、支持具２、ロードセル１
０、支点部材１２、及び伝達治具２０全体が、ネジＮを
回転中心とする締付トルクを受ける。この締付トルク
は、上記治具２０から各ピン３２を介し、円盤３４等を
経てトルク検出部４０に伝達され、同時にそこに貼付け
た歪みゲージＧ等により検出される。従って、ネジＮの
締付けに伴って、その締付力と締付トルクとを同時に検
出でき、正確に測定することが可能となる。この締付力
・締付トルク測定装置１を用いて測定した締付力と締付
トルクの経過の模式的グラフの１例を図４に示す。As shown in FIG. 1, with the tightening of the screw N, the male screw portion pulls the female screw member B upward,
At the same time, the support 2, the load cell 10, and the fulcrum member 12 are sandwiched. Then, the support 2 and the load cell 1 are caused by the frictional force generated between the female screw member B and the fulcrum member 12.
0, the fulcrum member 12 and the entire transmission jig 20 receive a tightening torque around the screw N as the rotation center. The tightening torque is transmitted from the jig 20 to the torque detecting section 40 via the pins 32 via the disks 34 and the like, and is simultaneously detected by the strain gauge G and the like attached thereto. Therefore, with the tightening of the screw N, the tightening force and the tightening torque can be simultaneously detected, and accurate measurement can be performed. FIG. 4 shows an example of a schematic graph of the progress of the tightening force and the tightening torque measured using the tightening force / tightening torque measuring device 1.

【００２０】この場合、座板Ａにはアルミニウム合金(A
6063-T5)の板(25×25×２mm)を使用し、中心に直径５mm
のネジ貫通孔ａが穿孔されている。また、雌ネジ部材Ｂ
にはステンレス鋼(SUS304)又は上記と同じアルミニウム
合金の板(30×30×２mm)を用い、前者にはＭ４×Ｐ０．
７の雌ネジ孔ｂを、後者には直径４mm弱の通し孔が明け
てある。更に、ネジＮにはステンレス鋼製のタッピング
ネジ(Ｍ４×４０)を用いた。従って、上記アルミニウム
合金の雌ネジ部材ＢにこのネジＮを用いると、その雄ネ
ジ部自体が上記通し孔内にＭ４の雌ネジ孔ｂを刻設す
る。尚、重り(Ｐ)は、雌ネジ部材Ｂの材質に拘わらず２
ｋｇｆとした。そして、上記ネジＮをステンレス鋼の雌
ネジ部材Ｂにネジ込む過程における締付力と締付トルク
との経過をＸ−Ｙレコーダにより測定し、模式的なグラ
フに表したのが図４である。In this case, aluminum alloy (A
6063-T5) plate (25 × 25 × 2mm)
Are drilled. The female screw member B
Stainless steel (SUS304) or the same aluminum alloy plate (30 × 30 × 2 mm) as the above, and M4 × P0.
7 has a female screw hole b, and the latter has a through hole having a diameter of less than 4 mm. Further, a stainless steel tapping screw (M4 × 40) was used as the screw N. Therefore, when the screw N is used for the female screw member B of the aluminum alloy, the male screw portion itself cuts the M4 female screw hole b in the through hole. The weight (P) is 2 regardless of the material of the female screw member B.
kgf. The progress of the tightening force and the tightening torque in the process of screwing the screw N into the female screw member B made of stainless steel was measured by an XY recorder, and FIG. 4 shows a schematic graph. .

【００２１】図４のグラフからネジＮの締付力と締付ト
ルクは、略正比例の関係を示し同様の増加傾向を示して
いる。一般に、締付トルクが同じでも締付力は、雌ネジ
部材Ｂの材質、ネジ山・谷部やネジの頭への油潤滑の有
無によって大きく変化する。従って、具体的な締付条件
に応じて適正な締付力と締付トルクとの関係を数式化、
或いはグラフ等による図形化を行うことが望ましい。例
えば、図４のグラフが、前記締付条件において適正な締
付力と締付トルクとの関係を示し、図中の一点鎖線を上
下に越えると不適正な締付状態となるので、その中間に
破線で示す管理すべき範囲(Ｃ.Ａ.)を設定することがで
きる。即ち、図４中における下側の一点鎖線の直下の位
置では、締付力が小さいのに摩擦が大きいため、締付ト
ルクが大きくなり、ネジＮが破損(ＮＧ)した。逆に、上
側の一点鎖線の直上の位置では、締付力が過剰となり雌
ネジ孔ｂが欠損(ＮＧ)した。From the graph of FIG. 4, the tightening force and the tightening torque of the screw N show a substantially linear relationship and show a similar increasing tendency. In general, even if the tightening torque is the same, the tightening force greatly changes depending on the material of the female screw member B, the presence or absence of oil lubrication on the screw ridges and valleys, and the head of the screw. Therefore, the relationship between the appropriate tightening force and tightening torque according to specific tightening conditions is expressed by a mathematical formula,
Alternatively, it is desirable to make a graphic using a graph or the like. For example, the graph of FIG. 4 shows the relationship between the proper tightening force and the proper tightening torque under the above-mentioned tightening conditions. Can be set a range to be managed (CA) indicated by a broken line. That is, at a position directly below the lower dashed line in FIG. 4, since the friction is large although the tightening force is small, the tightening torque increases and the screw N is damaged (NG). Conversely, at the position immediately above the one-dot chain line on the upper side, the tightening force was excessive and the female screw hole b was missing (NG).

【００２２】以上のように各種のネジＮの締付条件に応
じて適正な締付力と締付トルクとの関係をグラフ化する
には、締付力・締付トルク測定装置１を用いると、正確
で迅速に締付力と締付トルクを測定できる。従って、締
付作業の標準化に適した範囲を図式化することが容易に
行える。これにより、これまで作業者の経験や勘に頼っ
ていた締付作業を、具体的な締付条件毎に標準化でき、
簡単な訓練で常に適正な締付作業を容易に収得させるこ
とが可能となる。また、ロボット等による自動化に際し
ても、適正な締付作業条件のデータを予めその制御部に
記憶させて、適正な締付作業を継続して発揮させること
ができる。As described above, in order to graph the relationship between the proper tightening force and tightening torque according to the tightening conditions of various screws N, the tightening force / tightening torque measuring device 1 is used. It can measure the tightening force and torque accurately and quickly. Therefore, it is easy to diagram a range suitable for standardization of the fastening operation. As a result, tightening work that previously relied on the experience and intuition of workers can be standardized for each specific tightening condition,
With a simple training, it is possible to always obtain an appropriate tightening work easily. Also, in the case of automation by a robot or the like, it is possible to store appropriate tightening operation condition data in the control unit in advance and to continue to exert an appropriate tightening operation.

【００２３】図５は、上記締付力・締付トルク測定装置
１の変形形態を示す。尚、前記と同じ部分や要素には同
じ符号又は同様の符号を用いる。図５(Ａ)に示す締付力
・締付トルク測定装置５０は、ロードセル１０の下面の
左右に一対の浅溝１０ａを形成し、それらに下側に湾曲
面を有する凸条からなる支点１４ａの基部が固定され
る。ロードセル１０は、この支点１４ａを介して支点部
材１２に支持される。また、支持具２の支点８，８間の
距離は、支点１４ａ同士の距離の約半分とされている。
この測定装置５０のように、前記支点１４の位置を変え
てロードセル１０側に支点１４ａを固定しても、前記測
定装置１と同様の作用と効果を得られることは明らかで
ある。また、トルク伝達治具２０の本体２３における下
面の側方には、コロベアリング２９ａの上部が嵌合され
ている。これによっても、前記ボールベアリング２９と
同じ機能が得られる。FIG. 5 shows a modification of the tightening force / tightening torque measuring device 1. The same or similar reference numerals are used for the same parts and elements as described above. The tightening force / tightening torque measuring device 50 shown in FIG. 5 (A) has a pair of shallow grooves 10a formed on the left and right sides of the lower surface of the load cell 10, and a fulcrum 14a formed of a ridge having a curved surface on the lower side. Is fixed. The load cell 10 is supported by the fulcrum member 12 via the fulcrum 14a. The distance between the fulcrums 8 of the support 2 is about half of the distance between the fulcrums 14a.
It is apparent that the same operation and effect as the measuring device 1 can be obtained even when the fulcrum 14a is fixed to the load cell 10 side by changing the position of the fulcrum 14 as in the measuring device 50. The upper part of the roller bearing 29a is fitted on the side of the lower surface of the main body 23 of the torque transmitting jig 20. This also provides the same function as the ball bearing 29.

【００２４】図５(Ｂ)に示す締付力・締付トルク測定装
置６０は、ロードセル１０側に支点１４ａを固定すると
共に、支点部材１２の下面の中央寄りに支点１９，１９
を固定し、これらの支点１９を介して雌ネジ部材Ｂを線
接触又は点接触により支持可能としたものである。即
ち、トルク伝達治具２０の凹部２４を深くして、上記支
点１９が進入可能とした。支点１９は、ネジ貫通孔１８
を中心に、線対称となる複数対の凸条にして雌ネジ部材
Ｂを線接触にて支持するか、点対称となる複数の突起に
して雌ネジ部材Ｂを点接触にて支持する。A tightening force / tightening torque measuring device 60 shown in FIG. 5B fixes the fulcrum 14a on the load cell 10 side and also supports the fulcrums 19, 19 near the center of the lower surface of the fulcrum member 12.
Are fixed, and the female screw member B can be supported by line contact or point contact via these supporting points 19. That is, the concave portion 24 of the torque transmitting jig 20 is deepened so that the fulcrum 19 can enter. The fulcrum 19 is the screw through hole 18
The female screw member B is supported in a line contact with a plurality of pairs of ridges having a line symmetry, or the female screw member B is supported in a point contact with a plurality of projections having a point symmetry.

【００２５】上記線接触の場合、支点１９となる直線状
の凸条を一又は二対以上用いて＝形や四角形以上の多角
形に沿った線接触にしたり、カーブした凸条を用いて湾
曲した線接触や円形の線接触とすることもできる。ま
た、点接触の場合支点１９となる突起の数を調整するこ
とにより、その支持パターンを種々変化させ得る。従っ
て、ネジＮの締付部分における雌ネジ部材Ｂの支持条件
に合わせて、前記測定装置１による面接触状態で測定す
る他、本測定装置６０により線又は点接触状態にして締
付力と締付トルクを測定することができる。尚、上記支
点１９，１９を支点部材１２から取り外し可能とすれ
ば、本測定装置６０も雌ネジ部材Ｂを面接触状態で測定
することが可能となる。In the case of the above-mentioned line contact, one or two or more pairs of linear ridges serving as the fulcrum 19 are used to make line contact along a polygonal shape such as a shape or a quadrangle, or curved using a curved ridge. It is also possible to make a line contact or a circular line contact. In addition, by adjusting the number of projections serving as the fulcrum 19 in the case of point contact, the support pattern can be variously changed. Therefore, in addition to the measurement in the surface contact state by the measuring device 1 in accordance with the supporting condition of the female screw member B in the tightening portion of the screw N, the measuring device 60 makes the line or point contact state to tighten the tightening force and the tightening force. The applied torque can be measured. If the fulcrums 19, 19 can be detached from the fulcrum member 12, the measuring device 60 can also measure the female screw member B in a surface contact state.

【００２６】図６は、更に異なる形態の締付力・締付ト
ルク測定装置７０を示す。この測定装置７０は、前記測
定装置５０と同様な支持具２、ロードセル１０、支点部
材１２、及びこれらを支持する支持部材７２とを有す
る。該支持部材７２はベース７４上に固定されており、
前記治具２０のように回転しない。即ち、この測定装置
７０では、締付トルクの測定は、ネジＮの上方におい
て、ドライバＤを取付けたトルクメータに相当するセン
サ８０によって行われる。上記トルク測定用センサ８０
は、縦長で筒状の本体８２と、その底面にドライバＤを
取付けるための取付穴８４と、本体８２の中央部に貼付
けた歪みゲージＧと、その上面に回転軸９０を受入れる
受入穴８６とを有する。尚、上記歪みゲージＧからリー
ド線８８が外部に延びている。また、回転軸９０は図示
しないモータにより駆動される。FIG. 6 shows a tightening force / tightening torque measuring device 70 of a further different form. The measuring device 70 has the same support 2 as the measuring device 50, the load cell 10, the fulcrum member 12, and the supporting member 72 that supports them. The support member 72 is fixed on a base 74,
It does not rotate like the jig 20 does. That is, in the measuring device 70, the measurement of the tightening torque is performed by the sensor 80 corresponding to a torque meter to which the driver D is attached above the screw N. The above torque measuring sensor 80
Is a vertically long cylindrical main body 82, a mounting hole 84 for mounting a driver D on the bottom surface thereof, a strain gauge G attached to a central portion of the main body 82, and a receiving hole 86 for receiving the rotating shaft 90 on its upper surface. Having. A lead wire 88 extends from the strain gauge G to the outside. The rotating shaft 90 is driven by a motor (not shown).

【００２７】本測定装置７０においても、締付力は前記
と同じくロードセル１０の上下面の二対の歪みゲージＧ
により検出される。一方、締付トルクはネジＮを回転す
るドライバＤを固定する上記センサ８０の歪みゲージＧ
により測定される。即ち、ドライバＤがネジＮを回転さ
せる際に、その締付トルクに基づく反力がセンサ８０に
おける一対の歪みゲージＧに伝達される。両ゲージＧの
歪み量をリード線８８を介して外部の解析・表示装置に
送り、ネジＮの締付過程における締付トルクを締付力と
平行して測定することができる。この測定装置７０によ
れば、前記測定装置１と同様に締付力と締付トルクを測
定でき、Ｘ−Ｙレコーダを用いて前記図４のようなグラ
フ化も容易に行える。しかも、測定装置７０は、全体を
一層小型化と軽量化できると共に、装置の構造も簡素化
でき安価に製作し得る。更に、本装置７０は故障しにく
く、且つ少ないスペースで各種の条件に応じて効率的な
測定が可能となる。In this measuring apparatus 70, the tightening force is the same as described above and the two pairs of strain gauges G on the upper and lower surfaces
Is detected by On the other hand, the tightening torque is the strain gauge G of the sensor 80 for fixing the driver D rotating the screw N.
Is measured by That is, when the driver D rotates the screw N, the reaction force based on the tightening torque is transmitted to the pair of strain gauges G in the sensor 80. The amount of distortion of both gauges G is sent to an external analysis / display device via the lead wire 88, and the tightening torque in the process of tightening the screw N can be measured in parallel with the tightening force. According to the measuring device 70, the tightening force and the tightening torque can be measured in the same manner as the measuring device 1, and the graph shown in FIG. 4 can be easily formed by using the XY recorder. In addition, the measuring device 70 can be further reduced in size and weight as a whole, and can be manufactured at a low cost with a simplified structure of the device. Further, the present apparatus 70 is hardly broken down, and can perform efficient measurement according to various conditions in a small space.

【００２８】本発明は、以上において説明した各形態に
限定されるものではない。例えば、前記測定装置１,５
０,６０,７０を用いて、互いに接近する複数のネジＮを
順次締付け、それら全体の締付力と締付トルクの影響を
測定したり、或いははドライバＤを複数併設して同時に
複数のネジＮを締付けて、各ネジＮによる締付力と締付
トルクと平行して測定し、且つ全ネジＮによる変形等も
検出し得る。また、前記ベアリングに替えて、アンギュ
ラスラスト軸受やスラスト円錐コロ軸受等のスラスト軸
受や、各種のラジアル玉軸受、或いはラジアルコロ軸受
を用いることもできる。更に、前記ピンに替えて、ボル
ト・ナット、キーやコッタ等を用いて、トルクを伝達す
ることも可能である。The present invention is not limited to the embodiments described above. For example, the measuring devices 1, 5
A plurality of screws N approaching each other are sequentially tightened by using 0, 60, 70, and the overall effect of the tightening force and the tightening torque is measured. N can be measured in parallel with the tightening force and the tightening torque of each screw N, and deformation and the like due to all screws N can be detected. Further, instead of the bearing, a thrust bearing such as an angular thrust bearing or a thrust conical roller bearing, various radial ball bearings, or a radial roller bearing can be used. Further, torque can be transmitted using bolts and nuts, keys, cotters, and the like instead of the pins.

【００２９】また、前記測定装置１，５０,６０,７０を
一般のボール盤上にセットして、そのチャックに前記ド
ライバＤを固定することで、専用装置を製作することな
く、適宜必要に応じてネジＮの締付力と締付トルクを測
定することもできる。尚、被結合材には、前記座板Ａに
替えて各種断面の形材や角形の中空材を用いたり、雌ネ
ジ部材Ｂに替えてパイプ状の所謂ビスホールと称される
ネジ受けを一体に有するアルミ形材を使用しても良い。
また、ネジＮに太径のボルトを用いても良く、この場合
は前記ドライバＤに替えてボックススパナが使用され
る。Further, the measuring devices 1, 50, 60, and 70 are set on a general drilling machine, and the driver D is fixed to a chuck thereof. The tightening force and tightening torque of the screw N can also be measured. As the material to be joined, a shape member having various cross sections or a square hollow material is used instead of the seat plate A, or a pipe-shaped screw receiver called a so-called screw hole is integrally used instead of the female screw member B. You may use the aluminum shape which it has.
Further, a bolt having a large diameter may be used for the screw N. In this case, a box spanner is used instead of the driver D.

【００３０】[0030]

【発明の効果】以上において説明した本発明の締付力及
び締付トルク測定装置によれば、ネジの締付力と締付ト
ルクとを正確且つ同時に測定でき、且つ、種々の締付条
件にも容易に対応して測定することが可能となる。ま
た、測定装置全体を小型化及び軽量化でき、特に請求項
３の発明によればこれらが顕著となり、且つ装置の構造
も簡素化でき安価に製作し得る。更に、請求項５の発明
によれば、雌ネジ孔を有する被結合部材の種々な支持条
件に応じた測定が容易に行い得る。According to the apparatus for measuring the tightening force and the tightening torque of the present invention described above, the tightening force and the tightening torque of the screw can be measured accurately and simultaneously, and various tightening conditions can be satisfied. Can be easily measured. In addition, the entire measuring device can be reduced in size and weight. In particular, according to the invention of claim 3, these are remarkable, and the structure of the device can be simplified and the device can be manufactured at low cost. Further, according to the invention of claim 5, it is possible to easily perform measurement according to various support conditions of the coupled member having the female screw hole.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明の締付力及び締付トルク測定装置の一形
態を示す垂直断面図。FIG. 1 is a vertical sectional view showing one embodiment of a tightening force and tightening torque measuring device of the present invention.

【図２】図１の測定装置の一部断面を含む分解斜視図。FIG. 2 is an exploded perspective view including a partial cross section of the measuring device of FIG.

【図３】図１，２の測定装置における支持具とロードセ
ルにおける荷重と曲げモーメントの分布状態を示す略
図。FIG. 3 is a schematic diagram showing a distribution state of a load and a bending moment in a support and a load cell in the measuring device of FIGS.

【図４】図１，２の測定装置により得られた締付力と締
付トルクの経過を示す模式的なグラフ。FIG. 4 is a schematic graph showing the progress of a tightening torque and a tightening torque obtained by the measuring device of FIGS.

【図５】(Ａ)と(Ｂ)は共に図１，２の測定装置の変形形
態を示す部分垂直断面図。5 (A) and 5 (B) are partial vertical sectional views each showing a modification of the measuring apparatus of FIGS.

【図６】本発明の締付力及び締付トルク測定装置の異な
る形態を示す垂直断面図。FIG. 6 is a vertical sectional view showing a different form of the tightening force and tightening torque measuring device of the present invention.

【図７】従来の締付力と締付トルク測定装置を示す一部
断面を含む概略正面図。FIG. 7 is a schematic front view including a partial cross section showing a conventional tightening force and tightening torque measuring device.

【符号の説明】[Explanation of symbols]

１,５０,６０,７０…測定装置 ２………………………支持具 ４………………………凹み(支持部) ６,１１,１８…………ネジ貫通孔 ８,１４,１４ａ………支点 １０……………………ロードセル １２……………………支点部材 ２０……………………トルク伝達治具 ２４……………………凹部 ２９，２９ａ…………ベアリング ３２……………………ピン ３４……………………円盤(負荷部) ４０……………………トルク検出部 ４２……………………トルクメータ ７２……………………支持部材 ８０……………………トルク測定用センサ Ａ………………………座板(被結合材) Ｂ………………………雌ネジ部材(被結合材) ｂ………………………雌ネジ孔 Ｄ………………………ドライバ Ｇ………………………歪みゲージ Ｎ………………………ネジ 1, 50, 60, 70 measuring device 2 support device 4 recess (support portion) 6, 11, 18 screw through hole 8 , 14,14a Support point 10 Load cell 12 Support member 20 Torque transmitting jig 24 Torque transmission jig 24 … Recess 29,29a… Bearing 32… Pin 34 …………………………………………………………………… (Disc) …………………………………………………………………………………………………………… 80 ………………………………………………………………………………. ........................... Female screw member (material to be joined) b ........ Female screw hole D ........ Driver G ............... Strain gauge N ……………………… Screw

───────────────────────────────────────────────────── フロントページの続き (72)発明者 河西 洸一 東京都江東区木場２丁目７番23号 新日軽 株式会社内 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Koichi Kasai 2-7-23 Kiba, Koto-ku, Tokyo

Claims (5)

【特許請求の範囲】[Claims] 【請求項１】ネジ貫通孔を中心に有し、一側面に被結合
材に相当する座板等を回転不能に支持する支持部を、他
側面に一対の支点を有する支持具と、 中心に設けたネジ貫通孔の両側面の開口部付近に互いに
平行する一対の歪ゲージをそれぞれ設け、且つ上記支持
具の支点が接する側面と反対側の側面において、上記支
持具における支点間距離よりも大きい支点間距離を有す
る締付力測定用ロードセルと、 ネジ貫通孔を略中心に有し、上記ロードセルと一対の支
点を介して隣接する支点部材と、 上記支点部材に隣接し、且つ一側面に被結合材に相当す
る雌ネジ部材を回転不能に支持するトルク伝達用治具
と、を有し、 上記支持具とロードセルを互いに平行にして支持具の支
点により自由支持し、 測定すべきネジを上記座板側から貫通し、且つ上記各ネ
ジ貫通孔を貫通して上記雌ネジ部材の雌ネジ孔内に螺入
すると共に、 上記支持具、ロードセル、支点部材、及びトルク伝達用
治具とをベアリング等を介して回転可能に支持し、且つ
トルク伝達用治具とトルク検出部を有するトルクメータ
の負荷部とを複数のピン等にて結合した、 ことを特徴とするネジの締付力及び締付トルク測定装
置。A supporting member having a screw through hole as a center and supporting a seat plate or the like corresponding to a material to be joined on one side in a non-rotatable manner, a supporting tool having a pair of fulcrums on the other side; A pair of strain gauges parallel to each other are provided in the vicinity of the openings on both sides of the provided screw through-hole, and the distance between the fulcrums in the support is larger on the side opposite to the side where the fulcrum of the support comes into contact. A load cell for measuring a tightening force having a distance between fulcrums, a fulcrum member having a screw through hole substantially at the center, being adjacent to the load cell via a pair of fulcrums, and being adjacent to the fulcrum member and covered on one side surface. A torque transmitting jig that non-rotatably supports a female screw member corresponding to a binder, wherein the support and the load cell are parallel to each other, freely supported by a fulcrum of the support, and Penetrate from the seat plate side, and The screw is inserted into the female screw hole of the female screw member through each of the screw through holes, and the support, the load cell, the fulcrum member, and the torque transmitting jig are rotatably supported via bearings and the like. And a torque transmitting jig and a load portion of a torque meter having a torque detecting portion are coupled by a plurality of pins or the like. 【請求項２】締付力測定部が、前記支持具、ロードセ
ル、及び支点部材とからなり、締付トルク測定部が、前
記ピン等を受入れる複数の穴を有するトルク伝達用治具
を含み、且つこのトルク伝達用治具は前記ベアリング等
に支持されて、ネジの締付トルクを前記負荷部を介して
前記トルク検出部に伝達する、 ことを特徴とする請求項１に記載のネジの締付力及び締
付トルク測定装置。2. A tightening force measuring unit includes the support, the load cell, and a fulcrum member, and the tightening torque measuring unit includes a torque transmitting jig having a plurality of holes for receiving the pins and the like. 2. The screw tightening device according to claim 1, wherein the torque transmitting jig is supported by the bearing or the like, and transmits the screw tightening torque to the torque detecting unit via the load unit. 3. Force and tightening torque measuring device. 【請求項３】ネジ貫通孔を中心に有し、一側面に被結合
材に相当する座板等を回転不能に支持する支持部を、他
側面に一対の支点を有する支持具と、 中心に設けたネジ貫通孔の両側面の開口部付近に互いに
平行する一対の歪ゲージをそれぞれ設け、且つ上記支持
具の支点が接する側面と反対側の側面において、上記支
持具における支点間距離よりも大きい支点間距離を有す
る締付力測定用ロードセルと、 ネジ貫通孔を略中心に有し、上記ロードセルと一対の支
点を介して隣接する支点部材と、 上記支点部材に隣接し、且つ少なくとも一側面に被結合
材に相当する雌ネジ部材を回転不能に支持する支持部材
と、 上記座板側から貫通するネジの頭に対し、下端にドライ
バ等を有し、且つその上方の回転力受け部との間に歪み
ゲージ等のトルク測定手段を有するトルク測定用センサ
と、 を有することを特徴とするネジの締付力と締付トルク測
定装置。3. A support member having a screw through hole at the center and supporting a seat plate or the like corresponding to a material to be joined on one side in a non-rotatable manner, a support having a pair of fulcrums on the other side, A pair of strain gauges parallel to each other are provided in the vicinity of the openings on both sides of the provided screw through-hole, and the distance between the fulcrums in the support is larger on the side opposite to the side where the fulcrum of the support comes into contact. A load cell for measuring a tightening force having a distance between fulcrums, a fulcrum member having a screw through hole substantially at the center, adjoining the load cell via a pair of fulcrums, and adjoining the fulcrum member, and on at least one side surface. A support member that non-rotatably supports a female screw member corresponding to a material to be joined; a screwdriver that penetrates from the seat plate side; Measurement of torque between strain gauges A torque measuring sensor having a fixing means; and a screw tightening force and tightening torque measuring device. 【請求項４】前記トルク伝達用治具又は前記支持部材の
中心部に前記雌ネジ部材を回転不能に収容して支持する
凹部を形成し、且つネジの中心軸と上記雌ネジ部材の雌
ネジ孔の中心軸が一致する、ことを特徴とする請求項１
乃至３の何れかに記載のネジの締付力及び締付トルク測
定装置。4. A concave portion for accommodating and supporting the female screw member in a non-rotatable manner at a center portion of the torque transmitting jig or the support member, and a center axis of the screw and a female screw of the female screw member are formed. The central axis of the holes coincides with each other.
4. The screw tightening force and tightening torque measuring device according to any one of claims 1 to 3. 【請求項５】前記トルク伝達用治具の凹部に収容される
雌ネジ部材が、該伝達用治具と隣接する前記支点部材と
の間において、その雌ネジ孔を中心にして互いに対称な
複数の支点を介して接する、ことを特徴とする請求項４
に記載のネジの締付力及び締付トルク測定装置。5. A plurality of female screw members accommodated in a concave portion of said torque transmitting jig are symmetrical between said transmitting jig and said adjacent fulcrum member with respect to said female screw hole. 5. A contact point through a fulcrum.
2. A screw tightening force and tightening torque measuring device according to 1.