JPH05133866A - Fixing structure of friction/abrasion testing pin - Google Patents
Fixing structure of friction/abrasion testing pinInfo
- Publication number
- JPH05133866A JPH05133866A JP29898391A JP29898391A JPH05133866A JP H05133866 A JPH05133866 A JP H05133866A JP 29898391 A JP29898391 A JP 29898391A JP 29898391 A JP29898391 A JP 29898391A JP H05133866 A JPH05133866 A JP H05133866A
- Authority
- JP
- Japan
- Prior art keywords
- pin
- test
- test pin
- friction
- holding part
- 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.)
- Withdrawn
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 101
- 238000005299 abrasion Methods 0.000 title 1
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 239000000463 material Substances 0.000 abstract description 11
- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 abstract description 4
- 239000007769 metal material Substances 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910000975 Carbon steel Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010962 carbon steel Substances 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 102200082816 rs34868397 Human genes 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/388—Ceramics
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、摩擦摩耗試験ピンとそ
の固定構造に係り、特にピンオンディスク方式の摩擦摩
耗試験機に適した試験ピンとその固定構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a friction and wear test pin and its fixing structure, and more particularly to a test pin and its fixing structure suitable for a pin-on-disk type friction and wear tester.
【０００２】[0002]
【従来の技術】セラミックスは典型的な脆性材料であ
り、ほとんど塑成変形を示さずに瞬時に破壊するため、
複雑な成形、加工は困難である。このため、セラミック
スの摩擦摩耗特性を調べる方法としては、簡単な接触形
態による試験方法が採られている。そのうちの一つであ
るピンオンディスク法は、回転するディスク試料にピン
状試験片を一定荷重で押し付けるという単純な方法であ
り、基礎的な実験によく用いられている。2. Description of the Related Art Ceramics are a typical brittle material, and since they show instantaneously almost no plastic deformation,
Complex molding and processing are difficult. Therefore, as a method for investigating the friction and wear characteristics of ceramics, a test method using a simple contact form is adopted. One of them, the pin-on-disk method, is a simple method in which a pin-shaped test piece is pressed against a rotating disk sample with a constant load, and is often used in basic experiments.
【０００３】ピンオンディスク試験機は、材料の耐摩耗
性を調べるだけでなく、材料の摩擦係数自身を求める場
合にも用いられ、試験ピンを基台上に固定し、この試験
ピンに対して摩擦運動を行う材料を接触させつつ、摩擦
係数または耐摩耗性を測定するものである。このような
ピンオンディスク方式の摩擦摩耗試験機の一例を図４に
示す。同図において、ピン状試験片４１は、ロードセル
４３からジョイント４５を介してピン固定部４６に固定
される。ディスク試料４２は、ディスク固定部４７に固
定される。そして、回転用モータ４４によりディスク試
料４２が回転され試験が行われる。ここで、ピン状試験
片４１とディスク試料４２の位置を変換することによ
り、ピン状試験片４１を回転させることも可能である。
摩耗力はロードセル４３より検出される。The pin-on-disk tester is used not only for examining the wear resistance of a material but also for determining the friction coefficient of the material. The friction coefficient or wear resistance is measured while bringing materials that are in frictional motion into contact with each other. An example of such a pin-on-disk type friction and wear tester is shown in FIG. In the figure, the pin-shaped test piece 41 is fixed to the pin fixing portion 46 from the load cell 43 through the joint 45. The disc sample 42 is fixed to the disc fixing portion 47. Then, the disk motor 42 is rotated by the rotation motor 44 and the test is performed. Here, the pin-shaped test piece 41 can be rotated by changing the positions of the pin-shaped test piece 41 and the disk sample 42.
The wear force is detected by the load cell 43.
【０００４】この試験機において、試験ピンは従来、図
５（ａ）に示すように円筒形状のものが用いられ、摩擦
係数測定用ピン５１は先端を球面として材料と点接触さ
せ、通常の耐摩耗性測定用ピン５２の場合には試験ピン
の先端が面状のものを用いて面接触させる。そして、こ
れらの試験ピンは同図（ｂ）に示すようなディスク５３
に固定される。In this tester, conventionally, a test pin having a cylindrical shape as shown in FIG. 5 (a) has been used, and the friction coefficient measuring pin 51 has a spherical tip at a point contact with a material to obtain a normal resistance. In the case of the wear resistance measuring pin 52, a test pin having a flat tip is used for surface contact. Then, these test pins are used for the disk 53 as shown in FIG.
Fixed to.
【０００５】[0005]
【発明が解決しようとする課題】ところで、上述したピ
ンオンディスク方式の摩擦摩耗試験機では、高速または
高荷重下で試験を行う場合、試験ピンがディスクの固定
治具部分から折れるという現象がしばしば発生してい
た。特に、金属材料などを評価する場合、試験ピンの材
料として脆性材料であるセラミックスを用いた試験機で
は、固定用ディスクと試験ピンとの把み部分に応力が集
中し、この部分から破損してしまう。したがって、でき
る限り単純な形状でかつ、試験ピンと固定治具との把み
部分に応力が集中せず、耐久性に優れた試験ピンが必要
とされていいる。By the way, in the above-described pin-on-disc type friction and wear tester, when the test is performed at high speed or under high load, the test pin often breaks from the fixing jig portion of the disc. Had occurred. In particular, when evaluating metallic materials, in a tester that uses ceramics, which is a brittle material as the material for the test pin, stress concentrates on the gripped portion between the fixing disk and the test pin, and this portion is damaged. .. Therefore, there is a need for a test pin which has a simple shape as much as possible, and in which stress is not concentrated on the gripped portion between the test pin and the fixing jig and which has excellent durability.
【０００６】本発明は、このような従来の事情に対処し
てなされたもので、高速、高荷重下でも折れにくい、耐
久性に優れた摩擦摩耗試験ピンの固定構造を提供するこ
とを目的とする。The present invention has been made in consideration of such conventional circumstances, and an object thereof is to provide a fixing structure for a friction and wear test pin which is not easily broken even at a high speed and under a high load and has excellent durability. To do.
【０００７】[0007]
【課題を解決するための手段】本発明の摩擦摩耗試験ピ
ンの固定構造は、試験ピンの一端を固定治具に固定し、
この試験ピンの他端を被試験物と接触させて摩擦摩耗試
験を行うに際し、前記固定治具に突出して形成され、内
周面が円筒状かつ外周面がテーパ形状の斜面とされたピ
ン把持部と、前記ピン把持部の周囲から押圧力を加える
加圧部材とを有し、前記ピン把持部の内部に配置された
前記試験ピンの円筒側面において前記加圧部材の圧力を
受けるようにしたことを特徴としている。A fixing structure for a friction and wear test pin according to the present invention is one in which one end of the test pin is fixed to a fixing jig.
When carrying out a friction and wear test by bringing the other end of this test pin into contact with the DUT, the pin grip is formed so as to project from the fixing jig and has a cylindrical inner peripheral surface and a tapered outer peripheral surface. And a pressurizing member that applies a pressing force from the periphery of the pin gripping portion, and receives the pressure of the pressurizing member on the cylindrical side surface of the test pin arranged inside the pin gripping portion. It is characterized by
【０００８】また、本発明における第２の発明は、試験
ピンの一端を固定治具に固定し、この試験ピンの他端を
被試験物と接触させて摩擦摩耗試験を行うに際し、前記
試験ピンの一端に同心円状の金属補強部材を取り付け、
この金属補強部材を前記固定治具に固定したことを特徴
としている。A second aspect of the present invention is that, when one end of a test pin is fixed to a fixing jig and the other end of the test pin is brought into contact with an object to be tested to perform a friction wear test, the test pin is used. Attach a concentric metal reinforcing member to one end of
The metal reinforcing member is fixed to the fixing jig.
【０００９】本発明における第３の発明は、試験ピンの
一端を固定治具に固定し、この試験ピンの他端を被試験
物と接触させて摩擦摩耗試験を行うに際し、前記試験ピ
ンの一端をテーパ形状とし、このテーパ面において前記
固定治具の押圧力を受けるようにしたことを特徴として
いる。According to a third aspect of the present invention, one end of the test pin is fixed when one end of the test pin is fixed to a fixing jig and the other end of the test pin is brought into contact with an object to be tested to perform a friction wear test. Is tapered, and the taper surface receives the pressing force of the fixing jig.
【００１０】本発明において、試験ピンの摩擦側（被試
験材料と接触する面）におけるピンの側面は円筒形状で
あり、実際に摩擦摩耗が行われる頂点部分は、試験の目
的に合わせて平面形状あるいは球面形状とされる。一
方、他端（固定治具に固定される側）側の側面は円筒形
状でなく、特別な形状の把持部で固定したり、試験ピン
周囲に金属リングを焼きばめたり、試験ピン自体にテー
パ斜面からなる側面を設けたりすることにより、試験中
に試験ピンに対してかかる押圧力を試験ピンの側面全体
で受けるよう固定される。このため、セラミックス、超
硬合金など、比較的耐摩耗性が高く、試験ピンに負担の
かかる条件下での試験に適している。In the present invention, the side surface of the pin on the friction side of the test pin (the surface in contact with the material under test) has a cylindrical shape, and the apex portion at which friction and wear are actually carried out has a planar shape according to the purpose of the test. Alternatively, it has a spherical shape. On the other hand, the side surface on the other end side (side fixed to the fixing jig) is not cylindrical, but is fixed with a specially shaped gripping part, a metal ring is shrink fitted around the test pin, or the test pin itself By providing the side surface formed of the tapered slope, the side surface of the test pin is fixed so that the pressing force applied to the test pin during the test is received. Therefore, it has relatively high wear resistance such as ceramics and cemented carbide, and is suitable for a test under a condition where a load is applied to the test pin.
【００１１】[0011]
【作用】本発明によれば、ピンオンディスク方式の摩擦
摩耗試験機において、試験ピンにかかる応力、圧力をよ
り広い面積で受け止めるよう特別な固定構造を採ってい
る。この固定構造は、まず試験ピンを製作しやすい単純
形状の円筒形状とし、この円筒を支持、固定する治具形
状を、一点に応力が集中しないよう円筒の側面を含んで
把み込む構造である。このため、試験ピンへの荷重負担
が低減され、試験ピンの根元から折れるというような事
故が防止され、高荷重・高速度下における試験の信頼性
が向上する。また、試験ピン形状が単純であるため、加
工コストへの負担も少ない。According to the present invention, in the pin-on-disk type friction wear tester, a special fixing structure is adopted so as to receive the stress and pressure applied to the test pin in a wider area. This fixing structure is a structure in which a test pin is first made into a simple cylindrical shape, and the jig shape for supporting and fixing this cylinder is grasped including the side surface of the cylinder so that stress is not concentrated at one point. .. Therefore, the load on the test pin is reduced, accidents such as breaking from the root of the test pin are prevented, and the reliability of the test under high load and high speed is improved. Further, since the test pin shape is simple, the burden on the processing cost is small.
【００１２】[0012]
【実施例】次に、本発明の実施例について説明する。EXAMPLES Next, examples of the present invention will be described.
【００１３】実施例１ 図１は本発明の摩擦摩耗試験ピンの固定構造の一実施例
を示す図で、（ａ）は縦断面図、（ｂ）は横断面図を示
している。同図において、窒化ケイ素製の固定治具１１
にはピン把持部１２が突出して形成されている。このピ
ン把持部１２は内周面が円筒状かつ外周面がテーパ形状
の斜面とされ、（ｂ）図に示すように 2つの分離したブ
ロックからなっている。Embodiment 1 FIGS. 1A and 1B are views showing an embodiment of a fixing structure of a friction and wear test pin according to the present invention, wherein FIG. 1A is a longitudinal sectional view and FIG. 1B is a transverse sectional view. In the figure, a fixing jig 11 made of silicon nitride is used.
The pin grip portion 12 is formed so as to project therefrom. The pin gripping portion 12 has a cylindrical inner surface and a tapered outer surface, and is composed of two separate blocks as shown in FIG.
【００１４】ピン把持部１２の周囲には、これと同心円
状の加圧部材１３が配置され、固定治具１１と同じ材質
窒化ケイ素からなる試験ピン１４に対して矢印Ａ方向に
締め付け圧力がかかり、ピンの円筒側面に押圧力が加え
られる。この押圧力は、ある幅をもった面において加え
られるため、一点に応力が集中することなく、試験ピン
１４の破損を防止することができる。A pressure member 13 concentric with the pin grip portion 12 is arranged around the pin grip portion 12, and a tightening pressure is applied to the test pin 14 made of silicon nitride, which is the same material as the fixing jig 11, in the direction of arrow A. , A pressing force is applied to the cylindrical side surface of the pin. Since this pressing force is applied to the surface having a certain width, it is possible to prevent the test pin 14 from being damaged without the stress being concentrated at one point.
【００１５】なお、試験系側の剛性に問題がなければ、
固定治具１１およびピン把持部１２は金属材料の使用も
可能である。If there is no problem with the rigidity of the test system,
A metal material can be used for the fixing jig 11 and the pin grip portion 12.
【００１６】実施例２ 図２は、本発明の摩擦摩耗試験ピンの固定構造の他の実
施例を示す図で、（ａ）は試験ピンの斜視図、（ｂ）は
固定ディスクとの固定構造を示している。セラミックス
製の試験ピン２１の下端には、S45C（熱処理済）を用い
た金属リング２２が焼きばめられている。この金属リン
グ２２は試験ピン２１を支えて試験時の応力がピンの一
部に集中するのを防ぐもので、たとえば鉄鋼（炭素鋼、
合金鋼、ステンレス鋼、工具鋼等）、超硬(WC)などの材
料が挙げられる。試験ピン２１は試験時の回転を防止す
るため、固定ディスク２３に設けられた固定ネジ２４に
より回転部に固定される。そして、固定ディスク２３に
固定されたとき、応力は試験ピン２１の側面全体にかか
る。Embodiment 2 FIG. 2 is a view showing another embodiment of the fixing structure of the friction and wear test pin of the present invention, (a) is a perspective view of the test pin, and (b) is a fixing structure with a fixing disk. Is shown. At the lower end of the ceramic test pin 21, a metal ring 22 made of S45C (heat treated) is shrink-fitted. The metal ring 22 supports the test pin 21 and prevents stress at the time of test from concentrating on a part of the pin. For example, steel (carbon steel, carbon steel,
Materials such as alloy steel, stainless steel, tool steel, etc., and cemented carbide (WC) are listed. The test pin 21 is fixed to the rotating portion by a fixing screw 24 provided on a fixed disk 23 in order to prevent rotation during the test. Then, when fixed to the fixed disk 23, the stress is applied to the entire side surface of the test pin 21.
【００１７】実施例３ 図３は、本発明の摩擦摩耗試験ピンの固定構造のさらに
他の実施例を示す図で、（ａ）は試験ピンの斜視図、
（ｂ）および（ｃ）は固定ディスクとの固定構造を示し
ている。これらの図において、試験ピン３１は一端のみ
が裾広がりのテーパ形状とされ、実施例１における加圧
部材１３と同様の加圧部材３２が試験ピン３１を周囲か
ら矢印Ａ方向に押圧して固定する。このとき、押圧力は
試験ピン３１のテーパ面全面で受けることになる。した
がって、ピンの一直線上に応力が集中せず、高荷重、高
速度条件にも耐えられる。Embodiment 3 FIG. 3 is a view showing still another embodiment of the fixing structure of the friction and wear test pin of the present invention, in which (a) is a perspective view of the test pin,
(B) and (c) have shown the fixed structure with a fixed disk. In these figures, the test pin 31 has a tapered shape in which only one end is widened, and a pressing member 32 similar to the pressing member 13 in the first embodiment presses the test pin 31 in the direction of arrow A from the periphery to fix it. To do. At this time, the pressing force is received on the entire tapered surface of the test pin 31. Therefore, stress is not concentrated on the straight line of the pin, and it can withstand high load and high speed conditions.
【００１８】これら実施例の固定構造による摩擦摩耗試
験機を用いた試験においては、すべり速度 0cm/sec〜 1
00cm/sec、押圧力0kgf〜 30kgfの条件まで試験を行うこ
とが可能となり、信頼性の高いデータを得ることができ
た。これに対して、従来の固定構造による摩擦摩耗試験
機ではすべり速度10cm/sec、押圧力3kgfでピン折れが発
生した。In the tests using the friction and wear tester with the fixed structure of these examples, the slip speed was 0 cm / sec to 1
It became possible to perform a test under the conditions of 00 cm / sec and pressing force of 0 kgf to 30 kgf, and it was possible to obtain highly reliable data. On the other hand, in the conventional friction and wear tester with a fixed structure, pin breakage occurred at a sliding speed of 10 cm / sec and a pressing force of 3 kgf.
【００１９】このように、この実施例の試験ピンの固定
構造はセラミックス材料のピンオンディスク型摩擦摩耗
試験を行う際に有効であり、耐久性を大きく向上させる
ことができた。また、試験結果の信頼性が向上するた
め、製品の高品質化を図ることができる。As described above, the test pin fixing structure of this example was effective in conducting the pin-on-disk type friction and wear test of the ceramic material, and the durability could be greatly improved. Further, since the reliability of the test result is improved, the quality of the product can be improved.
【００２０】[0020]
【発明の効果】以上説明したように、本発明の摩擦摩耗
試験ピンの固定構造は、試験時に試験ピンに加わる応力
を広い面で受けるように構成しているため、試験ピンが
安定化され、より厳しい試験条件下での測定が可能とな
る。As described above, since the fixing structure of the friction and wear test pin of the present invention is configured to receive the stress applied to the test pin at the time of the test on the wide surface, the test pin is stabilized, It enables measurement under more severe test conditions.
【図１】本発明の一実施例の試験ピンの固定構造を示す
図。FIG. 1 is a diagram showing a test pin fixing structure according to an embodiment of the present invention.
【図２】本発明の他の実施例の試験ピンの固定構造を示
す図。FIG. 2 is a view showing a test pin fixing structure according to another embodiment of the present invention.
【図３】本発明の他の実施例の試験ピンの固定構造を示
す図。FIG. 3 is a view showing a test pin fixing structure according to another embodiment of the present invention.
【図４】ピンオンディスク方式の摩擦摩耗試験機の一例
を示す図。FIG. 4 is a diagram showing an example of a pin-on-disk type friction and wear tester.
【図５】従来の試験ピンを示す図である。FIG. 5 is a diagram showing a conventional test pin.
１１……固定治具 １２……ピン把持部 １３……加圧部材 １４……試験ピン ２１……試験ピン ２２……金属リング ２３……固定ディスク ３１……試験ピン ３２……加圧部材 11 ... Fixing jig 12 ... Pin gripping part 13 ... Pressing member 14 ... Test pin 21 ... Test pin 22 ... Metal ring 23 ... Fixing disk 31 ... Test pin 32 ... Pressing member
Claims (3)
の試験ピンの他端を被試験物と接触させて摩擦摩耗試験
を行うに際し、前記固定治具に突出して形成され、内周
面が円筒状かつ外周面がテーパ形状の斜面とされたピン
把持部と、前記ピン把持部の周囲から押圧力を加える加
圧部材とを有し、前記ピン把持部の内部に配置された前
記試験ピンの円筒側面において前記加圧部材の圧力を受
けるようにしたことを特徴とする摩擦摩耗試験ピンの固
定構造。1. An inner peripheral surface of the test pin is formed so as to project from the fixing jig when one end of the test pin is fixed to a fixing jig and the other end of the test pin is brought into contact with an object to be tested to perform a friction wear test. The pin gripping portion whose surface is cylindrical and the outer circumferential surface is a tapered slope, and a pressing member which applies a pressing force from the periphery of the pin gripping portion, are arranged inside the pin gripping portion. A fixing structure for a friction and wear test pin, characterized in that the cylindrical side surface of the test pin receives the pressure of the pressing member.
の試験ピンの他端を被試験物と接触させて摩擦摩耗試験
を行うに際し、前記試験ピンの一端に同心円状の金属補
強部材を取り付け、この金属補強部材を前記固定治具に
固定したことを特徴とする摩擦摩耗試験ピンの固定構
造。2. When a friction wear test is performed by fixing one end of a test pin to a fixing jig and bringing the other end of the test pin into contact with an object to be tested, a concentric metal reinforcing member is attached to one end of the test pin. A fixing structure for a friction and wear test pin, characterized in that the metal reinforcing member is fixed to the fixing jig.
の試験ピンの他端を被試験物と接触させて摩擦摩耗試験
を行うに際し、前記試験ピンの一端をテーパ形状とし、
このテーパ面において前記固定治具の押圧力を受けるよ
うにしたことを特徴とする摩擦摩耗試験ピンの固定構
造。3. When one end of the test pin is fixed to a fixing jig and the other end of the test pin is brought into contact with an object to be tested to perform a friction wear test, one end of the test pin is tapered.
A fixing structure for a friction and wear test pin, wherein the taper surface receives a pressing force of the fixing jig.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29898391A JPH05133866A (en) | 1991-11-14 | 1991-11-14 | Fixing structure of friction/abrasion testing pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29898391A JPH05133866A (en) | 1991-11-14 | 1991-11-14 | Fixing structure of friction/abrasion testing pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05133866A true JPH05133866A (en) | 1993-05-28 |
Family
ID=17866720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29898391A Withdrawn JPH05133866A (en) | 1991-11-14 | 1991-11-14 | Fixing structure of friction/abrasion testing pin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05133866A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6725977B2 (en) * | 2001-07-11 | 2004-04-27 | Sumitomo Wiring Systems, Ltd. | Wear-detecting probe and a braking element provided therewith |
| CN111122367A (en) * | 2019-11-25 | 2020-05-08 | 河海大学 | Silicon wafer rolling friction pair on mesoscale and rolling friction simulation method |
| CN112683658A (en) * | 2020-12-02 | 2021-04-20 | 浙江工业大学 | Friction head clamping device installed on friction testing machine |
-
1991
- 1991-11-14 JP JP29898391A patent/JPH05133866A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6725977B2 (en) * | 2001-07-11 | 2004-04-27 | Sumitomo Wiring Systems, Ltd. | Wear-detecting probe and a braking element provided therewith |
| CN111122367A (en) * | 2019-11-25 | 2020-05-08 | 河海大学 | Silicon wafer rolling friction pair on mesoscale and rolling friction simulation method |
| CN112683658A (en) * | 2020-12-02 | 2021-04-20 | 浙江工业大学 | Friction head clamping device installed on friction testing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 19990204 |