JPH0541934B2 - - Google Patents
Info
- Publication number
- JPH0541934B2 JPH0541934B2 JP63083082A JP8308288A JPH0541934B2 JP H0541934 B2 JPH0541934 B2 JP H0541934B2 JP 63083082 A JP63083082 A JP 63083082A JP 8308288 A JP8308288 A JP 8308288A JP H0541934 B2 JPH0541934 B2 JP H0541934B2
- Authority
- JP
- Japan
- Prior art keywords
- load
- screw bolt
- nut
- displacement
- screw
- 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.)
- Expired - Fee Related
Links
- 238000006073 displacement reaction Methods 0.000 claims description 63
- 238000000034 method Methods 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 6
- 230000013011 mating Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、ボールネジのスクリユーボルトとナ
ツトとを螺合状態で、一方を固定し、他方に負荷
を作用させて両者間の軸方向のガタに基づく変位
及び螺合部の剛性に基づく変位を測定してボール
ネジのガタ・剛性検出方法及び装置に関する。Detailed Description of the Invention (Industrial Field of Application) The present invention involves fixing one of the screw bolts and nuts of a ball screw in a screwed state, and applying a load to the other to adjust the axial direction between them. The present invention relates to a method and apparatus for detecting play and rigidity of a ball screw by measuring displacement due to play and displacement due to rigidity of a threaded part.
（従来の技術）
従来、ボールネジはその性質上ネジ効率が非常
に良い。このため、スクリユーボルト又はナツト
のいずれか一方を支持し他方に負荷を作用させ両
者間のガタに基づく変位及び螺合部の剛性に基づ
く変位を測定する際に、軸方向に負荷を作用させ
ると該両者の一方の支持側が回転させられて他方
の負荷側が前進又は後退してしまうので両者間の
ガタに基づく変位及び螺合部の剛性に基づく変位
を正確に測定することができなかつた。(Prior Art) Conventionally, ball screws have very high screw efficiency due to their nature. For this reason, when supporting either the screw bolt or the nut and applying a load to the other to measure the displacement due to play between the two and the displacement due to the rigidity of the threaded part, the load must be applied in the axial direction. Since one supporting side of the two is rotated and the other load side moves forward or backward, it is not possible to accurately measure the displacement due to play between the two and the displacement due to the rigidity of the screwed part.
このためにナツトを固定してこれに螺合するス
クリユーボルトの一端部においてこれの軸回りの
回動を規制して、負荷を作用させることが考えら
れるが、ナツトを固定してスクリユーボルトに負
荷を作用させるとき、ナツトの固定の仕方によつ
ては偏荷重が生じて精度の高い検出ができないこ
とがある。 For this purpose, it is conceivable to fix the nut and restrict the rotation around the axis of the screw bolt at one end of the screw bolt that is screwed into the nut, thereby applying a load. When a load is applied to the nut, depending on how the nut is fixed, an uneven load may occur and highly accurate detection may not be possible.
更に、検出時において、検査対象のボールネジ
によつてナツトとスクリユーボルトとの螺合状態
が異なるために単に変位量を測定するだけでは検
出されたガタ・剛性を統一して評価することが困
難である。 Furthermore, at the time of detection, the state of engagement between the nut and screw bolt differs depending on the ball screw being inspected, so it is difficult to uniformly evaluate the detected play and rigidity by simply measuring the amount of displacement. It is.
（本発明が解決しようとする課題）
本発明は、かかる従来の不都合を解消し、ボー
ルネジの螺合状態における軸方向のガタ・剛性を
正確に検出することができ、検出されたデータを
評価可能とするボールネジのガタ・剛性検出方法
及び装置を提供することを目的とする。(Problems to be Solved by the Present Invention) The present invention eliminates such conventional inconveniences, enables accurate detection of axial play and rigidity in the screwed state of a ball screw, and makes it possible to evaluate detected data. The present invention aims to provide a method and device for detecting backlash and rigidity of a ball screw.
（課題を解決するための手段）
本発明の検出方法は、かかる目的を達成するた
めに、ボールネジのスクリユーボルトと、これに
に螺合するナツトとの軸方向のガタ・剛性を検出
する方法において、該ナツトを固定し、該ナツト
と螺合するスクリユーボルトの一端部において、
その軸回りの回動を規制し且つ上下及び左右方向
に揺動自在にフローテイング支持し、該端部にお
いて軸方向に圧縮荷重と引張荷重の負荷をそれぞ
れ最大となるまで荷重を検出しつつ交互に作用さ
せ、該スクリユーボルトの他端部において生ずる
変位を測定し前記ボールネジのガタ・剛性を検出
することを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the detection method of the present invention is a method for detecting the play and rigidity in the axial direction between a screw bolt of a ball screw and a nut screwed therein. At one end of the screw bolt which fixes the nut and is threadedly engaged with the nut,
The rotation around the axis is restricted and the floating support is provided so that it can swing freely in the vertical and horizontal directions, and the compressive load and the tensile load are applied in the axial direction at the end portion alternately while detecting the load until each reaches its maximum. The ball screw is characterized in that play and rigidity of the ball screw are detected by measuring the displacement that occurs at the other end of the screw bolt.
また、該方法は前記圧縮荷重と引張荷重とをそ
れぞれ最大になるまで負荷を付与した後、各最大
負荷状態から無負荷状態として前記スクリユーボ
ルトの他端部に生ずる変位を測定することを特徴
とする。 Further, the method is characterized in that after the compressive load and the tensile load are applied to each maximum, the displacement occurring at the other end of the screw bolt is measured from each maximum load state to a no-load state. shall be.
更に本発明の前記方法を実施可能とする装置
は、ボールネジのスクリユーボルトと、これにに
螺合するナツトとの軸方向のガタ・剛性を検出す
る装置において、ベツド上に固設され該ナツトを
固定するナツト固定治具と、該ナツトと螺合する
スクリユーボルトの一端部を回動不能にクランプ
するクランプ手段と、該クランプ手段をスクリユ
ーボルトの軸方向に移動自在なスライドテーブル
に上下及び左右方向に揺動自在に固定する固定手
段と、該クランプ手段に装着されて該クランプ手
段と独立してスクリユーボルトの軸方向に適宜の
距離だけ移動自在の荷重検出器と、該荷重検出器
及びクランプ手段を介して該スクリユーボルトに
圧縮及び引張荷重の負荷を選択的に作用させる荷
重負荷装置と、該スクリユーボルトの他端部で該
スクリユーボルトの移動変位を測定する変位計と
からなることを特徴とする。 Further, a device capable of carrying out the method of the present invention is a device for detecting play and rigidity in the axial direction between a screw bolt of a ball screw and a nut screwed into the screw bolt, and the device is fixed on a bed and detects the stiffness of the screw bolt of a ball screw and a nut screwed therein. a nut fixing jig for fixing the nut, a clamp means for non-rotatably clamping one end of the screw bolt that is screwed into the nut, and a slide table that can move the clamp means up and down in the axial direction of the screw bolt. and a fixing means that is swingably fixed in the left and right directions; a load detector that is attached to the clamp means and is movable by an appropriate distance in the axial direction of the screw bolt independently of the clamp means; and the load detector. a load-loading device that selectively applies compressive and tensile loads to the screw bolt through a container and a clamping means; and a displacement meter that measures the displacement of the screw bolt at the other end of the screw bolt. It is characterized by consisting of.
（作用）
本発明の方法は、かかる工程によれば、前記ボ
ールネジのナツトを固定し、該ナツトと螺合する
スクリユーボルトの一端部において、その軸回り
の回動を規制し且つ上下及び左右方向に揺動自在
にフローテイング支持して負荷を作用させるの
で、ナツトの固定の仕方の如何にかかわらず偏荷
重をが生じない。この状態で圧縮または引張荷重
の一方の負荷が最大となるまで作用させて、その
ときに生じる該スクリユーボルトと該ナツトとの
螺合部との間の変位を該スクリユーボルトの他端
部で測定する。次いで、圧縮または引張荷重の他
方の負荷が最大となるまで作用させて同様にスク
リユーボルトの他端部で測定する。このときの圧
縮荷重の最大負荷時の変位位置と引張荷重の最大
負荷時の変位位置との間の変位量が、両者の軸方
向のガタ及び剛性に基づくものとなる。(Function) According to the process, the method of the present invention fixes the nut of the ball screw, restricts rotation around its axis at one end of the screw bolt that is threaded with the nut, and fixes the nut of the ball screw. Since the nut is floatingly supported so as to be swingable in the direction and a load is applied, an unbalanced load will not occur regardless of how the nut is fixed. In this state, one of the compressive and tensile loads is applied until it reaches its maximum, and the displacement between the screw bolt and the threaded part of the nut that occurs at that time is measured at the other end of the screw bolt. Measure with. Next, the other end of the screw bolt is measured in the same manner by applying the other load, compressive or tensile, until it reaches its maximum. At this time, the amount of displacement between the displacement position at the maximum load of the compressive load and the displacement position at the maximum load of the tensile load is based on the play and rigidity in the axial direction of both.
更に、圧縮荷重または引張荷重の最大負荷状態
時の変位位置から無負荷状態時の変位位置を検出
することによつて、負荷時に生ずる変位量、即
ち、ナツトとスクリユーボルトとの螺合部の剛性
に基づく変位量が測定される。 Furthermore, by detecting the displacement position in the no-load state from the displacement position in the maximum load state of compressive load or tensile load, it is possible to determine the amount of displacement that occurs under load, that is, the displacement of the threaded part between the nut and the screw bolt. The amount of displacement based on stiffness is measured.
前記ガタ・剛性に基づく変位量から該剛性に基
づく変位量を差し引いた変位量がガタに基づく変
位量となる。 The displacement amount obtained by subtracting the displacement amount based on the stiffness from the displacement amount based on the play/rigidity is the displacement amount based on the play.
また、本発明の装置は、かかる構成によれば、
ベツド上に固設された前記ナツト固定治具が前記
ナツトを固定し、前記クランプ手段がスクリユー
ボルトの一端部を回動不能にクランプし、前記固
定手段が該クランプ手段を上下及び左右方向にの
み揺動自在にスライドテーブルに固定し、該端部
が回動を規制され且つ上下及び左右方向にフロー
テイングされて支持される。 Moreover, according to this configuration, the device of the present invention has the following features:
The nut fixing jig fixedly installed on the bed fixes the nut, the clamp means clamps one end of the screw bolt in a non-rotatable manner, and the fixing means holds the clamp means vertically and horizontally. The end portion is fixed to a slide table so as to be swingable, and the end portion thereof is restricted from rotating and is supported by floating in the vertical and horizontal directions.
前記荷重負荷装置がクランプ手段に装着された
荷重検出器およびクランプ手段を介して圧縮また
は引張荷重の負荷をさせると、荷重検出器および
クランプ手段がスライドテーブルとともに移動し
て該荷重を前記端部に作用させる。 When the load applying device applies a compressive or tensile load through a load detector and a clamp means attached to the clamp means, the load detector and the clamp means move together with the slide table to apply the load to the end. Let it work.
前記変位計がスクリユーボルトの他端部の変位
を測定する。 The displacement meter measures the displacement of the other end of the screw bolt.
このとき、ナツトの固定によつてスクリユーボ
ルトに掛かる偏荷重は固定手段の上下および左右
方向の揺動により排除される。 At this time, the uneven load applied to the screw bolt by fixing the nut is eliminated by the vertical and horizontal rocking of the fixing means.
また、荷重負荷装置により荷重検出器が該クラ
ンプ手段と独立してスクリユーボルトの軸方向に
適宜の距離だけ圧縮または引張方向に移動してク
ランプ手段を介して圧縮または引張荷重を測定す
るので、無負荷状態から圧縮状態、該圧縮状態か
ら無負荷状態、無負荷状態から引張状態、該引張
状態から無負荷状態と連続して負荷荷重を測定す
ることが可能となる。 Further, the load detector moves in the compression or tension direction by a suitable distance in the axial direction of the screw bolt independently of the clamp means by the load application device, and measures the compression or tension load via the clamp means. It becomes possible to measure the applied load continuously from the no-load state to the compressed state, from the compressed state to the no-load state, from the no-load state to the tensile state, and from the tensile state to the no-load state.
（実施例）
本発明の一実施装置を第１図乃至第３図を用い
て以下詳細に説明する。(Example) An apparatus for implementing the present invention will be described in detail below with reference to FIGS. 1 to 3.
第１図は平面図、第２図は第１図の−線断
面図、第３図は部分拡大斜視図である。 1 is a plan view, FIG. 2 is a sectional view taken along the line -- in FIG. 1, and FIG. 3 is a partially enlarged perspective view.
本実施装置はベツト１上に固設される治具台２
とこれにボールネジのスクリユーボルトＹと螺合
するナツトＸを固定する治具金物３とからなるナ
ツト固定治具４を設け、ナツト固定治具４の前方
側のベツド１上に設けたレール５上をスクリユー
ボルトＹの軸方向に移動自在な摺動部６ａを備え
たスライドテーブル６を設けた。 This implementation device consists of a jig stand 2 fixedly installed on a bed 1.
A nut fixing jig 4 consisting of a screw bolt Y of a ball screw and a jig hardware 3 for fixing a nut A slide table 6 having a sliding portion 6a that is movable on the top in the axial direction of the screw bolt Y is provided.
該テーブル６上にスクリユーボルトＹの一端部
部Y′を挿入して締着するクランプ手段７を設け、
該クランプ手段７を上下および左右方向にのみ揺
動可能にフローテイング支持する固定手段８であ
る一対の自在接手を介して該テーブル６に連接し
た。 A clamp means 7 for inserting and tightening one end portion Y' of the screw bolt Y is provided on the table 6,
The clamping means 7 was connected to the table 6 via a pair of flexible joints, which are fixing means 8 that floatingly supported the clamping means 7 so that it could swing only in the vertical and horizontal directions.
該クランプ手段７は一体に中空枠部９を備え、
該中空枠部９に荷重検出器であるロードセル１０
をスクリユーボルトＹの軸方向に沿つて該中空枠
部９と独立して移動可能に装着した。 The clamping means 7 integrally includes a hollow frame portion 9,
A load cell 10 serving as a load detector is installed in the hollow frame portion 9.
was mounted so as to be movable along the axial direction of the screw bolt Y independently of the hollow frame portion 9.
該荷重検出器１０に連接してクランプ手段７を
介してスクリユーボルトＹにその軸方法に沿つて
圧縮または引張に荷重を作用させる荷重負荷装置
１１を設けた。 A load applying device 11 is connected to the load detector 10 and applies a compressive or tensile load to the screw bolt Y along its axis via the clamping means 7.
また、スクリユーボルトＹの他端部側のベツド
１上にスクリユーボルトＹの軸方向の移動変位量
を測定する変位計１２を設けた。 Further, a displacement meter 12 for measuring the amount of displacement of the screw bolt Y in the axial direction is provided on the bed 1 on the other end side of the screw bolt Y.
更に詳細には、前記クランプ手段７はスクリユ
ーボルトＹの一端部Y′を挿入可能とする軸孔１
３とこれを欠切するスリツト１４とを備え、ボル
ト１５によつて締着するようにした。 More specifically, the clamping means 7 has a shaft hole 1 into which one end Y' of the screw bolt Y can be inserted.
3 and a slit 14 cutting out the slit, and is fastened with a bolt 15.
また、前記固定手段８は第１図乃至第３図示の
ように、スライドテーブル６に固設した固定台８
ａとクランプ手段７とに設けたコ字型部材８ｂ，
８ｂとの間に側面視でＨ字型部材８ｃを嵌挿し、
両部材間を十字状に配設したピン８ｄ，８ｄで互
いに回動自在に連結し、連接した一対の自在接手
とした。 Further, the fixing means 8 is a fixing base 8 fixed to the slide table 6, as shown in FIGS. 1 to 3.
a and the U-shaped member 8b provided on the clamping means 7,
8b, insert the H-shaped member 8c in side view,
The two members are rotatably connected to each other by pins 8d and 8d arranged in a cross shape to form a pair of connected universal joints.
更に、前記中空枠部９内に装着した荷重検出器
１０はスクリユーボルトＹの軸方向に移動したと
きの該中空枠部９内面に当接する一対の半球状の
当接端子１６を備える。 Furthermore, the load detector 10 mounted in the hollow frame 9 is provided with a pair of hemispherical contact terminals 16 that come into contact with the inner surface of the hollow frame 9 when it moves in the axial direction of the screw bolt Y.
荷重負荷装置１１においてはスライドテーブル
６の前後部に一対のブラケツト１７，１７を設
け、両ブラケツト１７，１７間に差し渡され、両
ブラケツト１７，１７に対して摺動自在とした平
行する一対のロツド１８，１８を設け、両ロツド
１８，１８間に差し渡され、更に両ロツド１８，
１８に対して摺動自在なナツト装置１９を設け
た。両ロツド１８，１８間に該両ロツド１８，１
８に沿つて配設されると共に、ナツト装置１９と
螺合してこれを前後に移動させるスピンドルロツ
ド２０を設け、該スピンドルロツド２０を一方の
ブラケツト１７に回動自在に挿通して設け、更に
該スピンドルロツド２０をベツド１上に設けた取
付台２１に挿通して回動自在に設け、該取付台２
１側のスピンドルロツド２０の端部にハンドル車
２２を設けた。該ナツト装置１９の前後のロツド
１８，１８間を連結する平行な一対の取付板２
３，２３を設け、両取付板２３，２３とナツト装
置１９との間の両ロツド１８，１８の外周部に同
等の性質を備え所定の付勢力を有するコイルバネ
２４，２４を設けた。一方の取付板２３にはスピ
ンドルロツド２０を移動自在とする孔２５を設け
て該スピンドルロツド２０を貫通させている。そ
して、該取付板２３の一端部を前記荷重検出器１
０に連接した。 In the load application device 11, a pair of brackets 17, 17 are provided at the front and rear of the slide table 6, and a pair of parallel brackets 17, 17 is provided between the two brackets 17, 17, and is slidable on both the brackets 17, 17. The rods 18, 18 are provided, and the rods are stretched between the two rods 18, 18, and the rods 18, 18 are provided.
A nut device 19 which is slidable with respect to 18 is provided. Between the two rods 18, 18, the two rods 18, 1
A spindle rod 20 is disposed along the axis 8 and screwed into the nut device 19 to move it back and forth, and the spindle rod 20 is rotatably inserted through one of the brackets 17. Further, the spindle rod 20 is inserted into a mounting base 21 provided on the bed 1 so as to be rotatable, and the mounting base 2
A handle wheel 22 is provided at the end of the spindle rod 20 on the first side. A pair of parallel mounting plates 2 connecting the front and rear rods 18, 18 of the nut device 19.
3, 23 are provided, and coil springs 24, 24 having the same properties and a predetermined biasing force are provided on the outer periphery of both the rods 18, 18 between both the mounting plates 23, 23 and the nut device 19. One mounting plate 23 is provided with a hole 25 through which the spindle rod 20 can move freely. Then, one end of the mounting plate 23 is attached to the load detector 1.
Connected to 0.
前記変位計１２はスクリユーボルトＹの後方に
設けたガイド２５により支持し、該ガイド２５は
ベツド１上に設けた一対のガイドロツド２６，２
６によりスクリユーボルトＹの軸方向に移動自在
に設けた。ガイド２５はナツト固定治具４の治具
金物３と連結ピン２７で連結した。 The displacement meter 12 is supported by a guide 25 provided behind the screw bolt Y, and the guide 25 is supported by a pair of guide rods 26 and 2 provided on the bed 1.
6 to be movable in the axial direction of the screw bolt Y. The guide 25 was connected to the jig hardware 3 of the nut fixing jig 4 by a connecting pin 27.
次に前記実施装置の作動を同じく第１図及び第
２図に従つて説明する。 Next, the operation of the implementation device will be explained with reference to FIGS. 1 and 2.
まず、スクリユーボルトＹにナツトＸを螺合さ
せ、一端部Y′をクランプ手段７の軸孔１３に挿
入しボルト１５により締着する。このスクリユー
ボルトＹに螺合するナツトＸをナツト固定治具４
の治具金物３により治具台２に固定する。その後
に、変位計１２のガイド２５を前進させスクリユ
ーボルトＹの他端部に変位計１２の測定子を当接
させると共に治具金物３とガイド２５とを連結ピ
ン２７により連結する。 First, the nut X is screwed onto the screw bolt Y, and one end Y' is inserted into the shaft hole 13 of the clamping means 7 and tightened with the bolt 15. Nut fixing jig 4 holds the nut X that is screwed onto this screw bolt Y.
It is fixed to the jig stand 2 using the jig hardware 3. Thereafter, the guide 25 of the displacement gauge 12 is advanced to bring the measuring head of the displacement gauge 12 into contact with the other end of the screw bolt Y, and the jig hardware 3 and the guide 25 are connected by the connecting pin 27.
この状態から圧縮荷重側の負荷を作用させるべ
くベツド１に設けた荷重負荷装置１１のハンドル
車２２を反時計回り矢印Ａ方向に回転させナツト
装置１９を矢印Ｂ方向に移動させる。このとき、
荷重負荷装置１１のコイルバネ２４，２４がナツ
ト装置１９の前方及び後方の取付板２３，２３の
間で付勢されているいので無負荷状態では抵抗が
ないためコイルバネ２４，２４を介してロツド１
８，１８と共に取付板２３，２３を移動し、クラ
ンプ手段７の中空枠部９内に装着した荷重検出器
１０の当接端子１６を中空枠部９の内面に当接さ
せて変位計１２の零点調整を行う。この状態では
スライドテーブル６が移動せずスクリユーボルト
Ｙに負荷が発生しないので変位も生じない。 From this state, in order to apply a compressive load, the handle wheel 22 of the load applying device 11 provided on the bed 1 is rotated counterclockwise in the direction of arrow A, and the nut device 19 is moved in the direction of arrow B. At this time,
Since the coil springs 24, 24 of the load applying device 11 are biased between the front and rear mounting plates 23, 23 of the nut device 19, there is no resistance in the no-load state, so the rod 1 is attached via the coil springs 24, 24.
8 and 18, the contact terminal 16 of the load detector 10 mounted in the hollow frame part 9 of the clamp means 7 is brought into contact with the inner surface of the hollow frame part 9, and the displacement meter 12 is moved. Perform zero point adjustment. In this state, the slide table 6 does not move and no load is applied to the screw bolt Y, so no displacement occurs.
次に、軸方向のガタ及び剛性に基づく変位量を
検出する際には、更にハンドル車２２を回転して
ナツト装置１９をロツド１８，１８に案内させて
移動し、その移動に伴つてコイルバネ２４，２４
が徐々に圧縮されその弾性によりスクリユーボル
トＹ側の取付板２３が付勢されてロツド１８，１
８と共に移動する。該取付板２３が連接している
荷重検出器１０を介してクランプ手段７の中空枠
部９内で該クランプ手段７を移動させようとする
とき、この力は該クランプ手段７、固定手段８を
介してスライドテーブル６に伝達されて、該スラ
イドテーブル６を移動し、クランプ手段７がスク
リユーボルトＹ側に移動してスクリユーボルトＹ
に負荷を作用させる。 Next, when detecting the amount of displacement based on axial play and rigidity, the handle wheel 22 is further rotated to move the nut device 19 guided by the rods 18, 18, and as the nut device 19 moves, the coil spring 24 ,24
is gradually compressed, and its elasticity biases the mounting plate 23 on the screw bolt Y side, and the rods 18,1
Move with 8. When the clamping means 7 is moved within the hollow frame 9 of the clamping means 7 via the load detector 10 to which the mounting plate 23 is connected, this force causes the clamping means 7 and the fixing means 8 to move. is transmitted to the slide table 6 via the slide table 6, the clamp means 7 moves to the screw bolt Y side, and the clamp means 7 moves to the screw bolt Y side.
Apply a load to the
このとき、ナツトＸの固定位置が適切でなく、
スクリユーボルトＹの軸線がクランプ手段７のク
ランプ位置と一致していないときにも、連接され
た一対の自在接手を備えた固定手段８によりクラ
ンプ手段７の位置が上下及び左右方向に移動され
てナツトＸとスクリユーボルトＹの螺合部分に偏
荷重が生じない。 At this time, the fixing position of nut X is not appropriate,
Even when the axis of the screw bolt Y does not coincide with the clamping position of the clamping means 7, the position of the clamping means 7 can be moved vertically and horizontally by the fixing means 8 having a pair of connected universal joints. Unbalanced load does not occur on the threaded portion of the nut X and screw bolt Y.
この状態でスクリユーボルトＹに負荷が最大に
なるまで荷重負荷装置１１により負荷を作用させ
て、スクリユーボルトＹの変位量を変位計１２に
より測定する。 In this state, a load is applied to the screw bolt Y by the load applying device 11 until the load reaches the maximum, and the amount of displacement of the screw bolt Y is measured by the displacement meter 12.
このときの負荷荷重と変位量との関係は、第４
図の線ａで示され、最大変位量x1となる。 The relationship between the applied load and the amount of displacement at this time is the fourth
It is indicated by line a in the figure, and has a maximum displacement x 1 .
次いで、最大負荷の状態から荷重負荷装置１１
による負荷をハンドル車２２を回転させて無負荷
状態に戻す。このときの負荷荷重と変位量との関
係は第４図の線ｂで示され、そのときの変位量は
x2となる。更に再度、荷重負荷装置１１のハンド
ル車２２を回転させて最大負荷状態にしたときの
負荷荷重の変位量との関係は第４図の線ｃで示さ
れる。 Next, from the maximum load state, the load loading device 11
The handle wheel 22 is rotated to return the load to the no-load state. The relationship between the applied load and the amount of displacement at this time is shown by line b in Figure 4, and the amount of displacement at that time is
x 2 . Furthermore, when the handle wheel 22 of the load application device 11 is rotated to reach the maximum load state, the relationship between the applied load and the displacement amount is shown by line c in FIG. 4.
再度、無負荷状態に戻して、今度は逆にハンド
ル車２２を時計方向に回転して引張荷重側の負荷
を作用させ、これが最大負荷状態になるまで負荷
を作用させる。このときの負荷荷重と変位量との
関係は第４図の線ｄで示され、最大変位量x3とな
る。 Once again, the no-load state is restored, and this time, the handle wheel 22 is rotated clockwise in the opposite direction to apply a tensile load side until this reaches the maximum load state. The relationship between the applied load and the amount of displacement at this time is shown by line d in FIG. 4, and the maximum amount of displacement is x3 .
次いで、最大負荷の状態から荷重負荷装置１１
による負荷をハンドル車２２を反時計方向に回転
させて無負荷状態に戻す。このときの負荷荷重と
変位量との関係は第４図の線ｅで示され、その変
位量はx4となる。更に再度、荷重負荷装置１１の
ハンドル車２２を時計方向に回転させて最大負荷
状態にしたときの負荷荷重と変位量との関係は第
４図の線ｆで示される。 Next, from the maximum load state, the load loading device 11
The handle wheel 22 is rotated counterclockwise to return to the no-load state. The relationship between the applied load and the amount of displacement at this time is shown by the line e in FIG. 4, and the amount of displacement is x4 . Furthermore, the relationship between the applied load and the amount of displacement when the handle wheel 22 of the load applying device 11 is rotated clockwise to reach the maximum load state is shown by line f in FIG. 4.
このときの、変位量x2と変位量x4との間L1が
ガタによる変位量であり、変位量x1と変位量x2と
の間L2または変位量x3と変位量x3との間L2′が螺
合部の剛性に基づく変位量である。 At this time, L 1 between displacement x 2 and displacement x 4 is the displacement due to backlash, and L 2 between displacement x 1 and displacement x 2 or displacement x 3 and displacement x 3. The distance L 2 ′ is the amount of displacement based on the rigidity of the threaded portion.
このようにスクリユーボルトＹに作用させる圧
縮または引張荷重の負荷を作用させることにより
ガタによる変位量と剛性に基づく変位量とが測定
することができる。 By applying a compressive or tensile load to the screw bolt Y in this manner, the amount of displacement due to backlash and the amount of displacement based on rigidity can be measured.
（効果）
本発明の方法は、前記の説明から明らかなよう
に、ボールネジのスクリユーボルトに螺合するナ
ツトを固定した状態で偏荷重が作用することなく
該スクリユーボルトと該ナツトの軸方向のガタと
剛性とを正確に検出することができる。(Effects) As is clear from the above description, the method of the present invention allows the screw bolt of the ball screw to be screwed into the screw bolt of the ball screw in the axial direction without applying an unbalanced load when the nut is fixed. It is possible to accurately detect the backlash and stiffness of the device.
また、圧縮荷重と引張荷重との最大負荷を作用
させ、該両最大負荷時の変位量によりボールネジ
のガタ・剛性を検出するので、検出対象のボール
ネジの螺合状態の如何にかかわらず評価可能なデ
ータとして検出することができる。 In addition, since the maximum load of compressive load and tensile load is applied, and the amount of displacement at the time of both maximum loads is used to detect the backlash and rigidity of the ball screw, evaluation is possible regardless of the screwed state of the ball screw to be detected. It can be detected as data.
更に、最大負荷状態から無負荷状態にして検出
することによつて、ボールネジの螺合部の剛性に
基づく変位量を検出することができる。 Further, by detecting the state from the maximum load state to the no-load state, it is possible to detect the amount of displacement based on the rigidity of the threaded portion of the ball screw.
本発明の装置は、ナツトを固定したスクリユー
ボルトを回動不能にクランプする手段を上下及び
左右方向に揺動可能にフローテイング支持する固
定手段に設けたので、負荷を作用させた際にナツ
トとスクリユーボルトとの螺合部に偏荷重を生じ
させることなく該スクリユーボルトと該ナツトの
軸方向のガタと剛性とを正確に検出することがで
きる。 In the device of the present invention, the means for unrotatably clamping the screw bolt to which the nut is fixed is provided in the fixing means for floatingly supporting the screw bolt so as to be swingable in the vertical and horizontal directions. The axial play and rigidity of the screw bolt and the nut can be accurately detected without causing an uneven load on the threaded portion between the screw bolt and the screw bolt.
また、前記クランプ手段に対して独立してスク
リユーボルトの軸方向に適宜な距離だけ移動自在
に荷重検出器を設け、該荷重検出器を介してスク
リユーボルトに負荷をかけるので、スクリユーボ
ルトに圧縮及び引張荷重を選択的に無負荷状態か
ら最大負荷状態に作用させることができ、該負荷
に応じたボールネジの軸方向にガタ・剛性を連続
して検出することができる。 Further, a load detector is provided independently of the clamping means so as to be movable by an appropriate distance in the axial direction of the screw bolt, and a load is applied to the screw bolt via the load detector. It is possible to selectively apply compressive and tensile loads from a no-load state to a maximum-load state, and to continuously detect play and stiffness in the axial direction of the ball screw depending on the load.
第１図は本発明の一実施装置の平面図、第２図
は第１図の−線断面図、第３図は部分拡大斜
視図、第４図は負荷荷重と軸方向の変位量との関
係を示す線図である。
１……ベツド、４……ナツト固定治具、６……
スライドテーブル、７……クランプ手段、８……
固定手段、１０……荷重検出器、１１……荷重負
荷装置、１２……変位計、Ｘ……ボールネジのナ
ツト、Ｙ……ボールネジのスクリユーボルト。
FIG. 1 is a plan view of an apparatus for implementing the present invention, FIG. 2 is a sectional view taken along the line -- in FIG. 1, FIG. 3 is a partially enlarged perspective view, and FIG. It is a line diagram showing a relationship. 1...Bed, 4...Nut fixing jig, 6...
Slide table, 7... Clamping means, 8...
Fixing means, 10...Load detector, 11...Load loading device, 12...Displacement meter, X...Ball screw nut, Y...Ball screw screw bolt.
Claims (1)
螺合するナツトとの軸方向のガタ・剛性を検出す
る方法において、該ナツトを固定し、該ナツトと
螺合するスクリユーボルトの一端部において、そ
の軸回りの回動を規制し且つ上下及び左右方向に
揺動自在にフローテイング支持し、該端部におい
て軸方向に圧縮荷重と引張荷重の負荷をそれぞれ
最大となるまで該荷重を検出しつつ交互に作用さ
せ、該スクリユーボルトの他端部において生ずる
変位を測定し前記ボールネジのガタ・剛性を検出
することを特徴とするボールネジの軸方向ガタ・
剛性検出方法。 ２ 前記圧縮荷重の引張荷重とをそれぞれ最大に
なるまで負荷を付与した後、各最大負荷状態から
無負荷状態として前記スクリユーボルトの他端部
に生ずる変位を測定することを特徴とする請求項
１記載のボールネジの軸方向ガタ・剛性検出方
法。 ３ ボールネジのスクリユーボルトと、これにに
螺合するナツトとの軸方向のガタ・剛性を検出す
る装置において、ベツト上に固設され該ナツトを
固定するナツト固定治具と、該ナツトと螺合する
スクリユーボルトの一端部を回動不能にクランプ
するクランプ手段と、該クランプ手段をスクリユ
ーボルトの軸方向に移動自在なスライドテーブル
に上下及び左右方向に揺導自在に固定する固定手
段と、該クランプ手段に装着されて該クランプ手
段と独立してスクリユーボルトの軸方向に適宜の
距離だけ移動自在の荷重検出器と、該荷重検出器
及びクランプ手段を介して該スクリユーボルトに
圧縮及び引張荷重の負荷を選択的に作用させる荷
重負荷装置と、該スクリユーボルトの他端部で該
スクリユーボルトの移動変位を測定する変位計と
からなることを特徴とするボールネジのガタ・剛
性検出装置。[Claims] 1. A method for detecting axial play and rigidity between a screw bolt of a ball screw and a nut screwed into the screw bolt, which fixes the nut and screws into the nut. At one end, rotation around the axis is restricted and floating support is provided so that it can swing vertically and horizontally, and compressive load and tensile load are applied in the axial direction at the end until they reach their respective maximums. The axial play/rigidity of the ball screw is detected by detecting the load and applying it alternately, and measuring the displacement occurring at the other end of the screw bolt to detect the play/rigidity of the ball screw.
Stiffness detection method. 2. A claim characterized in that, after the compressive load and the tensile load are applied to the respective maximum loads, the displacement occurring at the other end of the screw bolt from each maximum load state to a no-load state is measured. The method for detecting axial play and rigidity of a ball screw according to 1. 3 In a device for detecting the axial play and rigidity of a screw bolt of a ball screw and a nut screwed into the screw bolt, a nut fixing jig that is fixed on a bed and fixes the nut, and a nut and screw a clamping means for non-rotatably clamping one end of the mating screw bolt, and a fixing means for fixing the clamping means to a slide table movable in the axial direction of the screw bolt so as to be swingable in the vertical and horizontal directions. , a load detector attached to the clamping means and movable by an appropriate distance in the axial direction of the screw bolt independently of the clamping means; and a load loading device that selectively applies a tensile load, and a displacement meter that measures displacement of the screw bolt at the other end of the screw bolt. Detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63083082A JPH01257235A (en) | 1988-04-06 | 1988-04-06 | Detecting method of play and rigidity in axial direction of ball screw and apparatus therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63083082A JPH01257235A (en) | 1988-04-06 | 1988-04-06 | Detecting method of play and rigidity in axial direction of ball screw and apparatus therefor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01257235A JPH01257235A (en) | 1989-10-13 |
| JPH0541934B2 true JPH0541934B2 (en) | 1993-06-25 |
Family
ID=13792259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63083082A Granted JPH01257235A (en) | 1988-04-06 | 1988-04-06 | Detecting method of play and rigidity in axial direction of ball screw and apparatus therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01257235A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2756916B1 (en) * | 1996-12-06 | 1999-02-12 | Eurocopter France | APPARATUS FOR MEASURING A GAME BETWEEN TWO PARTS |
| DE202009017874U1 (en) * | 2009-12-23 | 2011-03-31 | Thyssenkrupp Presta Ag | Device for testing a ball screw |
| CN103543010B (en) * | 2013-10-11 | 2016-01-20 | 西安交通大学 | A kind of high-speed guide screw and lead screw pair Integrated Checkout testing table |
| CN106979756A (en) * | 2017-04-24 | 2017-07-25 | 华南理工大学 | A kind of ball-screw gap and the measurement apparatus and method of rigidity |
| CN107727393B (en) * | 2017-10-30 | 2019-05-10 | 北京自动化控制设备研究所 | A small ball screw pair loading and running tool |
| CN110207981B (en) * | 2019-05-29 | 2021-06-18 | 南京理工大学 | A non-destructive ball screw pair static stiffness measuring device |
-
1988
- 1988-04-06 JP JP63083082A patent/JPH01257235A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01257235A (en) | 1989-10-13 |
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