JP2782261B2 - Method and apparatus for testing frictional force / frictional behavior of tape and cylinder - Google Patents
Method and apparatus for testing frictional force / frictional behavior of tape and cylinderInfo
- Publication number
- JP2782261B2 JP2782261B2 JP2042853A JP4285390A JP2782261B2 JP 2782261 B2 JP2782261 B2 JP 2782261B2 JP 2042853 A JP2042853 A JP 2042853A JP 4285390 A JP4285390 A JP 4285390A JP 2782261 B2 JP2782261 B2 JP 2782261B2
- Authority
- JP
- Japan
- Prior art keywords
- tape
- cylinder
- frictional
- frictional force
- magnetic tape
- 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 - Lifetime
Links
- 238000012360 testing method Methods 0.000 title claims description 44
- 238000000034 method Methods 0.000 title description 6
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 238000010998 test method Methods 0.000 claims description 3
- 230000005291 magnetic effect Effects 0.000 description 63
- 230000003068 static effect Effects 0.000 description 17
- 238000005259 measurement Methods 0.000 description 8
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
- 238000003384 imaging method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
- G01N2203/0647—Image analysis
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明はテープとシリンダの摩擦力・摩擦挙動試験
装置に関し、さらに詳しくは、磁気テープ等のテープと
金属、プラスチック、セラミックス等からなるシリンダ
とが摺接する際の摩擦力および摩擦挙動を、精度よく試
験する試験方法とその試験に使用する装置に関する。The present invention relates to an apparatus for testing frictional force / frictional behavior between a tape and a cylinder, and more particularly, to a tape such as a magnetic tape and a cylinder made of metal, plastic, ceramics or the like. TECHNICAL FIELD The present invention relates to a test method for accurately testing a frictional force and a frictional behavior at the time of sliding contact, and an apparatus used for the test.
一般に、ポリエテルフィルムなどの基体上に、磁性塗
料を塗布するか、あるいは強磁性金属を真空蒸着するな
どの方法で磁性層を設けてつくられる磁気テープ等にお
いては、高速で走行して磁気ヘッド等と激しく摺接する
ため、摩耗されやすく、摩耗により磁気記録再生におい
て信頼性の低下を招くなどの問題がある。In general, magnetic tapes and the like formed by applying a magnetic paint on a substrate such as a polyether film or providing a magnetic layer by a method such as vacuum deposition of a ferromagnetic metal, run at a high speed and use a magnetic head. And so on, which is liable to be worn, and causes a problem that the wear causes a decrease in reliability in magnetic recording / reproducing.
このため、磁気テープ等においては、特に、磁気ヘッ
ド等の摺接部材に対する摩擦・摩耗を調べて耐摩耗性を
充分にしておく必要があり、このような摩擦・摩耗を調
べるため、たとえば、第３図に示すような新東科学社
製、回転ドラム式摩擦抵抗測定器HEIDON−16を使用し
て、磁気テープと磁気ヘッドの摩擦・摩耗を試験するこ
とが行われている。For this reason, in the case of a magnetic tape or the like, it is particularly necessary to check friction and wear with respect to a sliding member such as a magnetic head so as to ensure sufficient wear resistance. The friction and wear of a magnetic tape and a magnetic head are tested using a rotary drum type frictional resistance measuring device HEIDON-16 manufactured by Shinto Kagaku Co. as shown in FIG.
すなわち、この回転ドラム式摩擦抵抗測定器は回転す
るシリンダ２に磁気テープ１を巻きつけ、磁気テープ１
の一端を荷重検出器９に固定するとともに、他端に荷重
６を吊下し、磁気テープ１の磁性層表面にシリンダ２を
回転させて繰り返し摺接させる方法で、磁気テープと磁
気ヘッドの摩擦・摩耗を連続的に測定するもので、荷重
検出器９はターンテーブル10上に取付けられ、このター
ンテーブル10を荷重検出器９ごとシリンダ２回りに回転
させることにより、磁気テープ１のシリンダ２に対する
巻き付け角度を調整できるようにしている。That is, in this rotary drum type frictional resistance measuring device, the magnetic tape 1 is wound around the rotating cylinder 2 and the magnetic tape 1
Is fixed to a load detector 9 and a load 6 is hung on the other end, and the cylinder 2 is rotated and repeatedly brought into sliding contact with the surface of the magnetic layer of the magnetic tape 1 by friction between the magnetic tape and the magnetic head. The load detector 9 is mounted on a turntable 10 and the turntable 10 is rotated together with the load detector 9 around the cylinder 2 so as to continuously measure the wear. The winding angle can be adjusted.
ところが、この回転ドラム式摩擦抵抗測定器による方
法では、シリンダ２の慣性により停止状態から瞬時に所
定の回転数に達することができないため、静止状態から
摺動状態に移行する時のシリンダ２の起動抵抗、すなわ
ち磁気テープ１を静止したシリンダ２に巻き付けた状態
からシリンダ２を所定の回転数に回転させた瞬間の荷重
を、荷重検出器９で読み取ることができず、その値を静
摩擦力として測定することができない。また、荷重検出
器９および記録装置等測定系の応答特性に限界があるた
め、起動瞬間に生ずる最大摩擦を正確に測定することが
難しい。However, in the method using the frictional resistance measuring device of the rotating drum type, since the predetermined rotational speed cannot be instantaneously reached from the stopped state due to the inertia of the cylinder 2, the activation of the cylinder 2 when shifting from the stationary state to the sliding state is performed. The resistance, that is, the load at the moment when the cylinder 2 is rotated at a predetermined number of revolutions from the state in which the magnetic tape 1 is wound around the stationary cylinder 2 cannot be read by the load detector 9, and the value is measured as the static friction force. Can not do it. Further, since the response characteristics of the load detector 9 and the measurement system such as the recording device are limited, it is difficult to accurately measure the maximum friction generated at the moment of starting.
さらに、磁気テープ１はシリンダ２と滑らかに摺接す
るのではなく、テープ走行機構に潤滑性が不足したり、
あるいは水滴や汚れが摩擦面に影響を及ぼしたりする
と、いわゆるスティックスリップ現象といわれる起動→
摺接→停止→起動という動作を断続的に繰り返す摩擦挙
動が生じる。ところが、従来の回転ドラム式摩擦抵抗測
定器による方法では、磁気テープ１の一端が荷重検出器
９に固定されているため、磁気テープ１の移動が規正さ
れて、スティックスリップ現象を試験することができ
ず、多くの産業用及び民生用機器に使用されるテープ走
行機構においては、これらの摩擦現象を制御することが
重要な課題となっているが、これら静摩擦力およびステ
ィックスリップ現象などの摩擦現象を試験することがで
きない。Further, the magnetic tape 1 does not smoothly contact the cylinder 2 but has insufficient lubricity in the tape traveling mechanism,
Or, when water droplets or dirt affects the friction surface, the so-called stick-slip phenomenon starts up →
A friction behavior occurs in which the operation of sliding contact → stop → start is intermittently repeated. However, in the conventional method using a rotating drum-type frictional resistance measuring device, one end of the magnetic tape 1 is fixed to the load detector 9, so that the movement of the magnetic tape 1 is regulated and the stick-slip phenomenon can be tested. It is not possible to control these friction phenomena in the tape running mechanism used for many industrial and consumer devices, but it is important to control these friction phenomena. Cannot be tested.
この発明はかかる欠点を改善するため種々の検討を行
った結果なされたもので、回転するシリンダにテープを
巻き付け、テープの一端をバネ定数100g/mm以下の弾性
体を介して固定し、他端に一定の張力を加えて、回転す
るシリンダとの摩擦力でシリンダの回転方向に移動する
テープの移動距離を連続的に測定することによって、テ
ープとシリンダの間の起動抵抗である静摩擦力を高精度
で測定し、かつスティックスリップ現象を高精度で試験
できるようにしたものである。The present invention has been made as a result of conducting various studies to improve such disadvantages, in which a tape is wound around a rotating cylinder, one end of the tape is fixed via an elastic body having a spring constant of 100 g / mm or less, and the other end is fixed. By applying a constant tension to the tape and continuously measuring the moving distance of the tape moving in the direction of rotation of the cylinder by the frictional force with the rotating cylinder, the static friction force, which is the starting resistance between the tape and the cylinder, is increased. It is designed to measure with high precision and to test the stick-slip phenomenon with high precision.
以下、この発明のテープとシリンダの摩擦力・摩擦挙
動試験装置の一実施例を示す第１図および第２図に基づ
いて説明する。Hereinafter, a description will be given based on FIGS. 1 and 2 showing an embodiment of a friction force / friction behavior test apparatus for a tape and a cylinder according to the present invention.
第１図において、１は回転駆動されるシリンダ２に巻
き付けられた磁気テープであり、その一端に白濁色テー
プ３が接続され、白濁色テープ３にさらに接続されたバ
ネ４を介して固定端５に固定されている。６は磁気テー
プ１の他端に取りつけられた荷重であって、この荷重６
によって、磁気テープ１に一定の張力が付与されてい
る。In FIG. 1, reference numeral 1 denotes a magnetic tape wound around a rotationally driven cylinder 2. One end of the magnetic tape is connected to a cloudy white tape 3, and a fixed end 5 is further connected to the cloudy white tape 3 via a spring 4. It is fixed to. 6 is a load attached to the other end of the magnetic tape 1, and this load 6
As a result, a constant tension is applied to the magnetic tape 1.
７はシリンダ２に巻きつけられたテープ１の背面側に
配設された光源系で、磁気テープ１の端部と磁気テープ
１に接続した白濁色テープ３に光を照射し、透過散乱し
た光の像を、磁気テープ１の表面側に配設された撮像系
８に投影する。そして、撮像系８で磁気テープ１の端部
と白濁色テープ３との比が暗部と明部の比として判別さ
れ、磁気テープ１の変位が求められる。Reference numeral 7 denotes a light source system disposed on the back side of the tape 1 wound around the cylinder 2, which irradiates light to the end of the magnetic tape 1 and the white tape 3 connected to the magnetic tape 1, and transmits and scatters light. Is projected on an imaging system 8 provided on the front side of the magnetic tape 1. Then, the imaging system 8 determines the ratio between the end of the magnetic tape 1 and the opaque tape 3 as the ratio between the dark part and the bright part, and determines the displacement of the magnetic tape 1.
しかして、このような摩擦力・摩擦挙動試験装置にお
いて、シリンダ２を回転駆動させると、磁気テープ１が
シリンダ２に巻きつけられて静止した状態から、所定の
速度で回転するシリンダ２に摩擦力で引っ張られ、第２
図（ａ）に示すように磁気テープ１がバネ４を引き伸ば
しながら荷重６側に移動する。In such a frictional force / frictional behavior testing device, when the cylinder 2 is driven to rotate, the magnetic tape 1 is wound around the cylinder 2 and the frictional force is applied to the cylinder 2 rotating at a predetermined speed. Pulled by the second
As shown in FIG. 1A, the magnetic tape 1 moves toward the load 6 while stretching the spring 4.
ところが、磁気テープ１が荷重６側に移動するに従っ
てバネ４による復元力が次第に増加し、この復元力が磁
気テープ１とシリンダ２間の静止最大摩擦力と等しくな
ったとき、第２図（ｂ）に示すように磁気テープ１は停
止して、回転を続けるシリンダ２と摺接する。However, when the restoring force of the spring 4 gradually increases as the magnetic tape 1 moves toward the load 6, when the restoring force becomes equal to the maximum static friction force between the magnetic tape 1 and the cylinder 2, FIG. As shown in ()), the magnetic tape 1 stops and comes into sliding contact with the continuously rotating cylinder 2.
このように磁気テープ１がシリンダ２と摺接状態にな
ると、一般には動摩擦力は静摩擦力よりも小さいため、
第２図（Ｃ）に示すように磁気テープ１はバネ４側に引
き戻される。When the magnetic tape 1 comes into sliding contact with the cylinder 2 as described above, the dynamic friction force is generally smaller than the static friction force.
As shown in FIG. 2 (C), the magnetic tape 1 is pulled back to the spring 4 side.
そこで、光源系７で、磁気テープ１の端部と磁気テー
プ１に接続した色濁色テープ３に光を照射し、透過散乱
した光の像を撮像系８に投影し、撮像系８で磁気テープ
１の端部と白濁色テープ３との比を暗部と明部の比とし
て判別し、磁気テープ１の変位を連続的に測定すると、
静止最大摩擦点における磁気テープ１の停止が、変位曲
線にピークを与えることから、この値Ｌを読み取り、最
大摩擦力である静摩擦力Ｆを、式Ｆ＝KL（但し、Ｋはバ
ネ定数である。）によって求めることができる。Therefore, the light source system 7 irradiates the end of the magnetic tape 1 and the opaque tape 3 connected to the magnetic tape 1 with light, and projects an image of the transmitted and scattered light onto the imaging system 8. When the ratio between the end of the tape 1 and the cloudy-colored tape 3 is determined as the ratio between the dark portion and the light portion, and the displacement of the magnetic tape 1 is continuously measured,
Since the stop of the magnetic tape 1 at the maximum static friction point gives a peak to the displacement curve, this value L is read, and the static friction force F, which is the maximum friction force, is calculated by the equation F = KL (where K is a spring constant). .).
また、以上のようにして静摩擦力を測定する際、静摩
擦力である最大摩擦力を超えた後の磁気テープ変位を続
けて測定すると、スティックスリップ現象を試験するこ
とができる。つまり、磁気テープ１がシリンダ２と摺接
状態になって、静摩擦よりも低い動摩擦状態に移行する
と、第２図（Ｃ）に示すようにバネ３が縮んで磁気テー
プ１は引き戻されるが、バネ４が荷重６に抗して限度ま
で縮んだところで、再び磁気テープ１は停止し、この停
止状態は持続されることなく、再度所定の速度で回転す
るシリンダ２に摩擦力で引っ張られて、第２図（ａ）に
示すように磁気テープ１がバネ４を引き伸ばしながら荷
重６側に移動する。そして、この過程が繰り返されるた
め、この磁気テープ１の変位の変化を連続的に観察し、
たとえば、繰り返し変位曲線の振幅、周期を測定する等
の適当な処理を行うことによって、スティックスリップ
現象を試験することができる。When measuring the static friction force as described above, the stick-slip phenomenon can be tested by continuously measuring the magnetic tape displacement after exceeding the maximum friction force, which is the static friction force. That is, when the magnetic tape 1 comes into sliding contact with the cylinder 2 and shifts to a dynamic friction state lower than the static friction, the spring 3 is contracted and the magnetic tape 1 is pulled back as shown in FIG. When the magnetic tape 4 has contracted to the limit against the load 6, the magnetic tape 1 stops again. This stopped state is not maintained, and the magnetic tape 1 is again pulled by the cylinder 2 rotating at a predetermined speed by frictional force. 2 As shown in FIG. 2A, the magnetic tape 1 moves toward the load 6 while stretching the spring 4. And since this process is repeated, the change of the displacement of the magnetic tape 1 is continuously observed,
For example, the stick-slip phenomenon can be tested by performing an appropriate process such as measuring the amplitude and the cycle of the repetitive displacement curve.
このようにして、静摩擦力およびスティックスリップ
現象を試験する場合、バネ４の定数Ｋを大きくすると、
磁気テープ１の変位が少なくなり、変位測定感度を高め
る必要が生ずる。また、バネ定数Ｋが大きいと、静摩擦
力測定におけるシリンダ２のスタート時の立り上がり特
性への影響を無視できず、さらに、スティックスリップ
現象の周期が早くなり、変位測定手段・記録読み取り手
段の応答性不足からの誤差が増大する。このため測定精
度を保つためにはバネ定数Ｋを100g/mm以下にするのが
好ましい。しかしながらバネ４のバネ定数Ｋを小さくし
すぎると、磁気テープ１の変位が大きくなり、測定感度
を高くすることができる反面、測定時間が長くなり、さ
らに、磁気テープ１の全長が長くなって、変位測定手段
を含めた試験装置が大型化するなどの問題があるため、
バネ４のバネ定数Ｋは100g/mm以下0.01g/mm以上の範囲
内となるようにするのが好ましい。Thus, when testing the static friction force and the stick-slip phenomenon, if the constant K of the spring 4 is increased,
The displacement of the magnetic tape 1 is reduced, and it becomes necessary to increase the displacement measurement sensitivity. Further, if the spring constant K is large, the influence on the rising characteristics at the start of the cylinder 2 in the measurement of the static friction force cannot be neglected, and the cycle of the stick-slip phenomenon becomes faster, so that the displacement measuring means and the recording and reading means are not used. The error from lack of response increases. Therefore, in order to maintain the measurement accuracy, it is preferable to set the spring constant K to 100 g / mm or less. However, if the spring constant K of the spring 4 is too small, the displacement of the magnetic tape 1 increases and the measurement sensitivity can be increased, but the measurement time increases, and the total length of the magnetic tape 1 increases. Due to problems such as an increase in the size of the test equipment including the displacement measuring means,
It is preferable that the spring constant K of the spring 4 be in the range of 100 g / mm or less and 0.01 g / mm or more.
なお、以上テープとして磁気テープ１を使用した場合
について説明したが、テープとしては、磁気テープに限
らず、ラッピングフィルムやインクリボンなど種々の産
業用フィルムを適用することができ、これらの産業用フ
ィルムの摩擦力および摩擦挙動を試験することができ
る。Although the case where the magnetic tape 1 is used as the tape has been described above, the tape is not limited to the magnetic tape, and various industrial films such as a wrapping film and an ink ribbon can be applied. Can be tested for friction force and friction behavior.
また、以上の実施例で用いた光学式変位測定手段は、
別の光学原理を用いてもよく、さらに電気的変位測定手
段、磁気的変位測定手段などの別の変位測定手段を用い
てもかまわない。Further, the optical displacement measuring means used in the above embodiments is:
Another optical principle may be used, and another displacement measuring means such as an electric displacement measuring means or a magnetic displacement measuring means may be used.
さらに、固定端５に直接バネ４を取り付ける代わりに
荷重検出器を挿入して固定し、この荷重検出器の測定値
Ｆから変位＝F/K（バネ定数）を求めてもよいが、この
場合は、荷重検出器の応答性およびバネ４の質量・慣性
が誤差を与えるので注意が必要である。Further, instead of directly attaching the spring 4 to the fixed end 5, a load detector is inserted and fixed, and the displacement = F / K (spring constant) may be obtained from the measured value F of the load detector. It should be noted that the response of the load detector and the mass and inertia of the spring 4 cause errors.
以下、第１図に示すこの発明の摩擦力・摩擦挙動試験
装置を用いて、ビデオテープと、磁気ヘッドで使用する
材料と同じ材料で形成されたシリンダの摩擦力および摩
擦挙動を試験し、第３図に示す従来の摩擦・摩耗試験装
置を用いて同じ摩擦力および摩擦挙動を試験した場合と
比較した。Hereinafter, the frictional force and frictional behavior of a video tape and a cylinder formed of the same material as the material used for the magnetic head were tested using the frictional force / frictional behavior test apparatus of the present invention shown in FIG. A comparison was made with the case where the same frictional force and frictional behavior were tested using the conventional friction / wear test apparatus shown in FIG.
この摩擦力・摩擦挙動試験に使用するテープ１として
は、日立マクセル社製、Ｓ−VHS用ビデオテープ XRS
ST−120を用い、シリンダ２としては、日立金属社製の
直径61mmのAHSアルミニウムを、さらに表面粗さJIS:Ra
値で0.08μｍに仕上げたものを使用した。The tape 1 used for this frictional force / frictional behavior test is a video tape for Hitachi Maxell S-VHS XRS.
Using ST-120, cylinder 2 was made of AHS aluminum with a diameter of 61 mm manufactured by Hitachi Metals, and surface roughness JIS: Ra
Those finished to a value of 0.08 μm were used.
試験例１ 第１図に示すこの発明の摩擦力・摩擦挙動試験装置を
使用し、シリンダ２の外周面に、ビデオテープ１の磁性
層側が接するようにして、巻きつけ角度180゜でビデオ
テープ１を巻き付けた。そして、ビデオテープ１の一端
に白濁色テープ３を接続し、この白濁色テープ３を、固
定端５に固定したバネ定数3g/mmのバネ４に接続して固
定した。また、ビデオテープ１の他端に30gの分銅６を
吊下し、分銅６を吊下するためのチャックと合わせて31
gの荷重をかけた。Test Example 1 The video tape 1 was wound at an angle of 180 ° using the frictional force / frictional behavior test device of the present invention shown in FIG. 1 so that the magnetic layer side of the video tape 1 was in contact with the outer peripheral surface of the cylinder 2. Was wound. Then, a cloudy white tape 3 was connected to one end of the video tape 1, and the cloudy white tape 3 was connected and fixed to a spring 4 having a spring constant of 3 g / mm fixed to the fixed end 5. In addition, a 30 g weight 6 is suspended from the other end of the video tape 1, and together with a chuck for suspending the weight 31.
A load of g was applied.
次いで、シリンダ２を周速11mm/secで回転駆動させ、
ビデオテープ１と白濁色テープ３の接続部を含む適当な
領域に、光源系７から光を投射し、透過散乱した光の像
を撮像系８に撮影して、明部（白濁色テープ３部）と暗
部（ビデオテープ１部）の比からビデオテープ１の変位
を求めて、摩擦力および摩擦挙動を試験した。Next, the cylinder 2 is driven to rotate at a peripheral speed of 11 mm / sec,
Light is projected from a light source system 7 to an appropriate region including a connection portion between the video tape 1 and the cloudy tape 3, an image of the transmitted and scattered light is captured by an imaging system 8, and a bright portion (cloudy tape 3 portion) ) And the dark portion (1 part of the video tape), the displacement of the video tape 1 was determined, and the frictional force and frictional behavior were tested.
試験例２ 試験例１において、試験例１で用いたビデオテープ１
に代えて、試験例１で使用したビデオテープ１と同じテ
ープを、予めフレオンとヘキサンとを重量比にして１対
１で混合した混合溶液中で超音波洗浄したものを使用し
た以外は、試験例１と同様にして摩擦力および摩擦挙動
を試験した。Test Example 2 In Test Example 1, the video tape 1 used in Test Example 1 was used.
, Except that the same tape as video tape 1 used in Test Example 1 was subjected to ultrasonic cleaning in a mixed solution in which Freon and hexane were mixed in a weight ratio of 1 to 1 in advance. The friction force and friction behavior were tested as in Example 1.
試験例３ 第３図に示す従来の摩擦・摩耗試験装置を使用し、シ
リンダ２の外周面に、ビデオテープ１の磁性層側が接す
るようにして、巻きつけ角度180゜でビデオテープ１を
巻き付けた。そして、ビデオテープ１の一端を東洋ボー
ドウィン社製；荷重検出器（Ｕゲージ検出器T7）９に固
定した。また、ビデオテープ１の他端に30gの分銅６を
吊下し、分銅６を吊下するためのチャックと合わせて31
gの荷重をかけた。Test Example 3 Using the conventional friction and wear test apparatus shown in FIG. 3, the video tape 1 was wound at a winding angle of 180 ° so that the magnetic layer side of the video tape 1 was in contact with the outer peripheral surface of the cylinder 2. . Then, one end of the video tape 1 was fixed to a load detector (U gauge detector T7) 9 manufactured by Toyo Boardwin Co., Ltd. In addition, a 30 g weight 6 is suspended from the other end of the video tape 1, and together with a chuck for suspending the weight 31.
A load of g was applied.
次いで、シリンダ２を周速11mm/secで回転駆動させ、
東洋ボードウィン社製；荷重検出器（Ｕゲージ検出器T
7）９で荷重を検出して、摩擦力および摩擦挙動を試験
した。Next, the cylinder 2 is driven to rotate at a peripheral speed of 11 mm / sec,
Toyo Baudouin; load detector (U gauge detector T
7) The load was detected at 9, and the frictional force and frictional behavior were tested.
試験例４ 試験例３において、試験例３で用いたビデオテープ１
に代えて、試験例３で使用したビデオテープ１と同じテ
ープを、予めフレオンとヘキサンとを重量比にして１対
１で混合した混合溶液中で超音波洗浄したものを使用し
た以外は、試験例３と同様にして摩擦力および摩擦挙動
を試験した。Test Example 4 In Test Example 3, the video tape 1 used in Test Example 3 was used.
, Except that the same tape as video tape 1 used in Test Example 3 was ultrasonically washed in a mixed solution in which Freon and hexane were mixed at a weight ratio of 1: 1 in advance. The friction force and friction behavior were tested as in Example 3.
第４図（ａ）は試験例１で摩擦力を試験した結果を、
ビデオテープ１とシリンダ２との摩擦力と、ビデオテー
プ１と摺接しながら回転するシリンダ２の回転移動距離
との関係図にして表したもので、このグラフからピーク
ポイントＢにおける摩擦力により静摩擦力を62gと読み
取ることができる。FIG. 4 (a) shows the result of the frictional force test in Test Example 1,
A graph showing the relationship between the frictional force between the videotape 1 and the cylinder 2 and the rotational movement distance of the cylinder 2 rotating while sliding on the videotape 1. From this graph, the frictional force at the peak point B is represented by the static frictional force. Can be read as 62 g.
また、第４図（ｂ）は試験例２で摩擦挙動を試験した
結果を、ビデオテープ１とシリンダ２との摩擦力と、ビ
デオテープ１と摺接しながら回転するシリンダ２の回転
移動距離との関係図にして表したもので、このグラフか
ら、スティックスリップ現象の摺動特性が摩擦抗力の変
化としてよく現されている。FIG. 4 (b) shows the result of the friction behavior test in Test Example 2 in which the frictional force between the video tape 1 and the cylinder 2 and the rotational movement distance of the cylinder 2 rotating while sliding on the video tape 1 are shown. It is a relational diagram, and from this graph, the sliding characteristics of the stick-slip phenomenon are well represented as a change in frictional drag.
第４図（ｃ）は試験例３で摩擦力を試験した結果を、
ビデオテープ１とシリンダ２との摩擦力と、ビデオテー
プ１と摺接しながら回転するシリンダ２の回転移動距離
との関係図にして表したもので、このグラフからは第４
図（ａ）のようなピークポイントＢが現れず、静摩擦力
を読み取ることができなった。FIG. 4 (c) shows the result of the frictional force test in Test Example 3,
This is a graph showing the relationship between the frictional force between the video tape 1 and the cylinder 2 and the rotational movement distance of the cylinder 2 rotating while sliding on the video tape 1.
The peak point B as shown in FIG. 7A did not appear, and the static friction force could not be read.
第４図（ｄ）は試験例４で摩擦挙動を試験した結果
を、ビデオテープ１とシリンダ２との摩擦力と、ビデオ
テープ１と摺接しながら回転するシリンダ２の回転移動
距離との関係図にして表したもので、このグラフからは
スティックスリップ現象が観察されなかった。ただし、
ビデオテープ１が回転シリンダと摺動している間は、時
々数K Hzのテープ鳴きが聞こえ、ビデオテープ１自らの
弾性による数K Hzの短周期のスティックスリップ現象が
不安定に生じていた。FIG. 4 (d) is a graph showing the relationship between the frictional force between the video tape 1 and the cylinder 2 and the rotational movement distance of the cylinder 2 rotating while sliding on the video tape 1 in a test result of the friction behavior in Test Example 4. The stick-slip phenomenon was not observed from this graph. However,
While the videotape 1 is sliding with the rotating cylinder, a tape squeak of several KHz is sometimes heard, and the short-slip phenomenon of a short cycle of several KHz due to the elasticity of the videotape 1 itself has occurred in an unstable manner.
なお、第４図（ａ）〜（ｄ）では縦軸を摩擦力（ｇ）
で表したが、変位（mm）で表してもよく、縦軸をどちら
で表すかは自由であるが、たとえば、静摩擦力測定では
摩擦力で表し、スティックスリップ現象を調べるには変
位で表示するものが便利である。In FIGS. 4A to 4D, the vertical axis represents the frictional force (g).
Although it may be expressed in terms of displacement (mm), the vertical axis may be freely expressed. For example, in static friction force measurement, it is expressed as frictional force, and to investigate stick-slip phenomenon, it is expressed as displacement. Things are convenient.
第４図（ａ）および（ｃ）から明らかなように、従来
の摩擦・摩耗試験装置では静摩擦力を読み取ることはで
きないが、この発明のテープの摩擦力・摩耗挙動試験方
法およびその装置によれば、最大静止摩擦を示すピーク
ポイントＢが計測され、これから静摩擦力を高精度で正
しく読み取ることができる。また、第４図（ｂ）および
（ｄ）から明らかなように、従来の摩擦・摩耗試験装置
ではスティックスリップ現象を読み取ることはできない
が、この発明のテープの摩擦力・摩擦挙動試験方法およ
びその装置によれば、スティックスリップ現象をはっき
りと高精度で計測することができる。さらに、第４図
（ａ）のビデオテープではスティックスリップ現象が生
じることなく滑らかに摺動しているのに比べ、第４図
（ｂ）の混合溶剤で洗浄したビデオテープではスティッ
クスリップ現象が生じており、ビデオテープの磁性層の
潤滑効果が低下していることがわかる。As is clear from FIGS. 4 (a) and 4 (c), although the conventional friction / wear test device cannot read the static friction force, the tape friction force / wear behavior test method of the present invention and the device therefor can be used. For example, the peak point B indicating the maximum static friction is measured, and the static friction force can be accurately read from the peak point B with high accuracy. As is clear from FIGS. 4 (b) and 4 (d), the conventional friction / wear test apparatus cannot read the stick-slip phenomenon. According to the device, the stick-slip phenomenon can be measured clearly and with high accuracy. Further, the video tape of FIG. 4 (a) slides smoothly without the stick-slip phenomenon, whereas the video tape washed with the mixed solvent of FIG. 4 (b) causes the stick-slip phenomenon. This indicates that the lubricating effect of the magnetic layer of the video tape is reduced.
このように、この発明のテープの摩擦力・摩擦挙動試
験方法およびその装置によれば、テープとシリンダの摩
擦力・摩擦挙動を精度よく試験することができ、テープ
の表面の潤滑の良否も試験することができる。As described above, according to the method and the apparatus for testing the frictional force / frictional behavior of the tape of the present invention, the frictional force / frictional behavior of the tape and the cylinder can be accurately tested, and the quality of the lubrication of the tape surface can also be tested. can do.
第１図はこの発明のテープの摩擦力・摩擦挙動試験装置
の一実施例を示す概略説明図、第２図は同摩擦力・摩擦
挙動試験装置による測定原理説明図、第３図は従来の摩
擦・摩耗試験装置の概略説明図、第４図（ａ）はこの発
明のテープの摩擦力・摩擦挙動試験装置を用い、試験例
１で摩擦力を試験した磁気テープ１とシリンダ２との摩
擦力と、シリンダ２の回転移動距離との関係図、第４図
（ｂ）は同テープの摩擦力・摩擦挙動試験装置を用い、
試験例２で摩擦挙動を試験した磁気テープ１とシリンダ
２との摩擦力と、シリンダ２の回転移動距離との関係
図、第４図（ｃ）は従来の摩擦・摩耗試験装置を用い、
試験例３で摩擦力を試験した磁気テープ１とシリンダ２
との摩擦力と、シリンダ２の回転移動距離との関係図、
第４図（ｄ）は同摩擦・摩耗試験装置を用い、試験例４
で摩擦挙動を試験した磁気テープ１とシリンダ２との摩
擦力と、シリンダ２の回転移動距離との関係図である。 １……磁気テープ（テープ）、２……シリンダ、３……
白濁色テープ、４……バネ、５……固定端、６……荷
重、７……光源系、８……撮像系FIG. 1 is a schematic explanatory view showing an embodiment of a device for testing frictional force and frictional behavior of a tape according to the present invention, FIG. 2 is a diagram illustrating the principle of measurement by the frictional force and frictional behavior tester, and FIG. FIG. 4 (a) is a schematic explanatory view of a friction / wear test apparatus, and FIG. 4 (a) shows the friction between a magnetic tape 1 and a cylinder 2 in which a friction force was tested in Test Example 1 using a tape friction force / friction behavior test apparatus of the present invention. FIG. 4 (b) is a graph showing the relationship between the force and the rotational movement distance of the cylinder 2, and FIG.
FIG. 4 (c) shows the relationship between the frictional force between the magnetic tape 1 and the cylinder 2 for which the frictional behavior was tested in Test Example 2 and the rotational movement distance of the cylinder 2, and FIG.
Magnetic tape 1 and cylinder 2 tested for frictional force in Test Example 3
Diagram showing the relationship between the frictional force between the cylinder and the rotational movement distance of the cylinder 2,
FIG. 4 (d) shows a test example 4 using the same friction / wear test apparatus.
FIG. 5 is a diagram showing a relationship between a frictional force between the magnetic tape 1 and the cylinder 2 for which a frictional behavior was tested in Example 1 and a rotational movement distance of the cylinder 2. 1 ... magnetic tape (tape), 2 ... cylinder, 3 ...
Cloudy tape, 4 ... Spring, 5 ... Fixed end, 6 ... Load, 7 ... Light source system, 8 ... Imaging system
Claims (2)
ープの一端をバネ定数100g/mm以下の弾性体を介して固
定し、テープの他端に一定の張力を加えて、回転するシ
リンダとの摩擦力でシリンダの回転方向に移動するテー
プの移動距離を連続的に測定し、このテープの変位から
テープとシリンダの摩擦力および摩擦挙動を求めること
を特徴とするテープとシリンダの摩擦力・摩擦挙動試験
方法1. A tape is wrapped around a rotating cylinder, one end of the tape is fixed via an elastic body having a spring constant of 100 g / mm or less, and a constant tension is applied to the other end of the tape to cause friction with the rotating cylinder. The frictional force and the frictional behavior of the tape and the cylinder, characterized by continuously measuring the moving distance of the tape that moves in the rotation direction of the cylinder by force, and calculating the frictional force and the frictional behavior between the tape and the cylinder from the displacement of the tape Test method
巻き付けて一端をバネ定数100g/mm以下の弾性体を介し
て固定するとともに、他端に一定の張力を付与したテー
プと、テープが回転するシリンダとの摩擦力でシリンダ
の回転方向に移動する移動距離を測定する手段とを備え
たことを特徴とするテープとシリンダの摩擦力・摩擦挙
動試験装置2. A rotary-driven cylinder, a tape wound around the cylinder and fixed at one end via an elastic body having a spring constant of 100 g / mm or less, and a fixed tension applied to the other end, and Measuring means for measuring the moving distance of the cylinder in the rotational direction by the frictional force with the rotating cylinder, and a device for testing the frictional force / frictional behavior between the tape and the cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2042853A JP2782261B2 (en) | 1990-02-22 | 1990-02-22 | Method and apparatus for testing frictional force / frictional behavior of tape and cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2042853A JP2782261B2 (en) | 1990-02-22 | 1990-02-22 | Method and apparatus for testing frictional force / frictional behavior of tape and cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03245036A JPH03245036A (en) | 1991-10-31 |
| JP2782261B2 true JP2782261B2 (en) | 1998-07-30 |
Family
ID=12647577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2042853A Expired - Lifetime JP2782261B2 (en) | 1990-02-22 | 1990-02-22 | Method and apparatus for testing frictional force / frictional behavior of tape and cylinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2782261B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103017962B (en) * | 2012-12-04 | 2014-08-06 | 上海交通大学 | Quick, simple and convenient device for measuring ball screw friction force and measuring method |
| CN106323787A (en) * | 2016-09-18 | 2017-01-11 | 远东电缆有限公司 | Aerial insulated cable abrasion test system and test method |
| CN113252226B (en) * | 2021-05-28 | 2021-09-24 | 江西省台辰新材料有限公司 | Tension test system and test method of adhesive tape |
| CN114965255B (en) * | 2022-06-06 | 2023-12-29 | 常熟迈得医疗器械技术服务有限公司 | Catheter friction coefficient-based detection mechanism and detection method thereof |
-
1990
- 1990-02-22 JP JP2042853A patent/JP2782261B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03245036A (en) | 1991-10-31 |
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