JPS59176327A - Production of friction material for disc brake - Google Patents
Production of friction material for disc brakeInfo
- Publication number
- JPS59176327A JPS59176327A JP58052227A JP5222783A JPS59176327A JP S59176327 A JPS59176327 A JP S59176327A JP 58052227 A JP58052227 A JP 58052227A JP 5222783 A JP5222783 A JP 5222783A JP S59176327 A JPS59176327 A JP S59176327A
- Authority
- JP
- Japan
- Prior art keywords
- friction material
- heat
- asbestos
- mold
- laminated
- 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.)
- Pending
Links
Abstract
Description
【発明の詳細な説明】
本発明は、自動車等車両に使用されるディスクブレーキ
用摩擦材の製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a friction material for disc brakes used in vehicles such as automobiles.
従来汎用のディスクブレーキ用摩擦材は、ディスクロー
タと摺動接触して良好なブレーキ性能を確保するため、
一般に熱伝導性の良いメタリック系摩擦材が使用されて
いる。そのため、このメタリック系摩擦材を直接裏金に
固着させて摩擦パッドを形成すると、ブレーキ作用時に
ディスクロータとの摩擦摺動接触により発生した熱が、
摩擦パッドを押圧するピストンのブレーキオイルに伝わ
り、ブレーキオイルを高温として、ブレーキオイル中に
気泡を発生させるなどの問題を生ずる。Conventional general-purpose friction materials for disc brakes make sliding contact with the disc rotor to ensure good braking performance.
Generally, metallic friction materials with good thermal conductivity are used. Therefore, if this metallic friction material is directly adhered to the back metal to form a friction pad, the heat generated by frictional sliding contact with the disc rotor during braking will be
This is transmitted to the brake oil of the piston that presses the friction pad, causing the brake oil to become hot and causing problems such as the generation of bubbles in the brake oil.
そのため従来は、メタリック系摩擦材と裏金との間に断
熱性に優れた低熱伝導性のアスベスト系摩擦材を介在さ
せている。すなわち、摩擦パッドの摩擦材はメタリック
系摩擦材とアスベスト系摩擦材とか積層されて形成され
ている。そして、このメタリック系摩擦材とアスベスト
系摩擦材の積層面が平面状に形成される場合には、両者
の積層間の結合強度は一般的に低いため、図に示すよう
に、両者の積層面を凹凸に形成して、結合強度を高くす
ることが行われている。なお、図において、符号ｌがメ
タリック系摩擦材、２がアスベスト系摩擦材、３が裏金
である。Therefore, conventionally, an asbestos-based friction material with excellent heat insulation properties and low thermal conductivity is interposed between the metallic friction material and the back metal. That is, the friction material of the friction pad is formed by laminating a metallic friction material and an asbestos friction material. When the laminated surfaces of the metallic friction material and asbestos friction material are formed in a planar shape, the bonding strength between the two laminated layers is generally low, so as shown in the figure, the laminated surfaces of the two It is being practiced to increase the bonding strength by forming the material into an uneven shape. In the figure, reference numeral 1 indicates a metallic friction material, 2 indicates an asbestos friction material, and 3 indicates a metal backing.
ところで従来、このメタリック系摩擦材１とアスベスト
系摩擦材２との積層面に凹凸を形成して積層させる方法
は、まず、所定形状の金型内にアスベスト系摩擦材２を
投入し、このアスベスト系摩擦材２のメタリック系摩擦
材１との積層面に凹凸をプレスで予備成形し、この上に
メタリック系摩擦材１を積層し、プレスで所定形状に押
しかためて熱成形により硬化させている。By the way, conventionally, the method of laminating the metallic friction material 1 and the asbestos friction material 2 by forming irregularities on their laminated surfaces is to first put the asbestos friction material 2 into a mold with a predetermined shape, and then The uneven surface of the friction material 2 and the metallic friction material 1 is preformed using a press, and the metallic friction material 1 is laminated on top of this, pressed into a predetermined shape using a press, and hardened by thermoforming. There is.
しかし、上記した従来の製造方法によるときには、予備
成形により形成させたアスベスト系摩擦材の表面の凹凸
が最終工程の熱成形時にくずれて、所定の凹凸が形成さ
れない問題がある。However, when using the above-mentioned conventional manufacturing method, there is a problem that the unevenness on the surface of the asbestos-based friction material formed by preforming collapses during the final step of thermoforming, and the desired unevenness is not formed.
しかして、本発明の目的は、メタリック系摩擦材等の高
熱伝導性摩擦材とアスベスト系摩擦材等の低熱伝導性摩
擦材の積層間に形成する凹凸を所定の形状どおりに形成
することにある。Therefore, an object of the present invention is to form irregularities formed between laminated layers of a high thermal conductivity friction material such as a metallic friction material and a low thermal conductivity friction material such as an asbestos friction material into a predetermined shape. .
上記目的を達成する本発明のディスクブレーキ用摩擦材
の製造方法は、所定形状の金型内に低熱伝導性摩擦材を
投入し°Ｃ１高熱伝導性摩ｌａ材との積層面に凹凸をプ
レスで予備成形すると共に、この予備成形時に予備加熱
して低熱伝導性摩擦材を少し硬化させ、その後高熱伝導
性摩擦材を積層してプレスで所定の外形形状に押しかた
め熱成形することを特徴とする。The method of manufacturing a friction material for disc brakes according to the present invention which achieves the above object is to put a low thermal conductive friction material into a mold of a predetermined shape and press unevenness on the laminated surface with a high thermal conductive laminated material at °C1. It is characterized in that it is preformed, and during this preforming, it is preheated to slightly harden the low thermal conductivity friction material, and then the high thermal conductivity friction material is laminated and pressed into a predetermined external shape with a press and thermoformed. do.
次に、本発明の上記構成に基づ〈実施例を説明する。な
お、この実施例は従来同様、高熱伝導性摩擦材としてメ
タソック系摩擦材を使用し、低熱伝導性摩擦材としてア
スベスト系摩擦材を使用した例である。Next, an embodiment will be described based on the above configuration of the present invention. In this example, as in the conventional case, a Metasoc type friction material is used as a high thermal conductivity friction material, and an asbestos type friction material is used as a low thermal conductivity friction material.
まず、所定形状の金型内にアスベスト系摩擦材を投入し
、プレスでメタソック系摩擦材との積層面に凹凸を形成
する予備成形を行う。この予備成形時に金型及び投入さ
れたアスベスト系摩擦材を８０°〜１２０°Ｃの範囲で
予備加熱し、アスベスト系摩擦材を少し硬化させる。First, an asbestos-based friction material is placed in a mold having a predetermined shape, and preforming is performed using a press to form irregularities on the laminated surface with the Metasoc-based friction material. During this preforming, the mold and the asbestos-based friction material introduced are preheated in the range of 80° to 120°C to slightly harden the asbestos-based friction material.
なお、上記アスベスト系摩擦材の予備加熱は、予めアス
ベスト系摩擦材を投入する前に金型を所定の予備加熱温
度に加熱しておき、この加熱された状態の金型にアスベ
スト系摩擦材を投入して予備加熱をしてもよい。In addition, the above-mentioned preheating of the asbestos-based friction material is performed by heating the mold to a predetermined preheating temperature before introducing the asbestos-based friction material, and then inserting the asbestos-based friction material into the heated mold. You can also put it in and preheat it.
上記によりアスベスト系摩擦材を予備加熱して少し硬化
させた後、メタリック系摩擦材を積層させ、プレスにて
所定の外形寸法形状に押しかためて、１５０°〜１６０
℃の温度で熱成形を行う。After the asbestos-based friction material is preheated and slightly hardened as described above, the metallic friction material is laminated and pressed into a predetermined external shape using a press, and is heated to a 150° to 160°
Perform thermoforming at a temperature of °C.
なお、この熱成形時には一般に裏金もアスベスト系摩擦
材の下面に配設されて、熱成形時に同時に固着され、摩
擦パッドが製造できる。In addition, during this thermoforming, a back metal is generally placed on the lower surface of the asbestos-based friction material and is fixed at the same time during the thermoforming, so that a friction pad can be manufactured.
本発明は上記のように、予備成形時に予備加熱してアス
ベスト系摩擦材を少し硬化させるため、その積層面に形
成される凹凸形状も少し硬化され、その後、その上にメ
タリック系摩擦材を積層して熱成形する際においても、
凹凸形状はくずれることなく所定形状を維持したままメ
タリック系摩擦材を積層することができる。As described above, in the present invention, since the asbestos friction material is slightly hardened by preheating during preforming, the uneven shape formed on the laminated surface is also slightly hardened, and then the metallic friction material is laminated thereon. Even when thermoforming
The metallic friction material can be laminated while maintaining the predetermined shape without deforming the uneven shape.
その結果、本発明により製造されたディスクブレーキ用
摩擦材のメタリック系摩擦材とアスベスト系摩擦材の積
層面は、所定形状の凹凸が形成されて結合されるため、
所期どおりの結合強度を得ることができる。As a result, the laminated surfaces of the metallic friction material and the asbestos friction material of the friction material for disc brakes manufactured according to the present invention are bonded together with irregularities of a predetermined shape formed thereon.
The desired bond strength can be obtained.
なお、上述の実施例においては、低熱伝導性摩擦材とし
てアスベスト系摩擦材を使用した場合について説明した
が、その他グラスファイバ系摩擦材を使用することもで
き、グラスファイバ系摩擦材を使用した場合も上述と同
様の製造方法により製造することができる。また、高熱
伝導性摩擦材としても、上述したメタリック系摩擦材の
他、各種の高熱伝導性の良い摩擦材を使用することがで
きる。In addition, in the above-mentioned example, the case where an asbestos-based friction material was used as a low thermal conductivity friction material was explained, but other glass fiber-based friction materials can also be used, and when a glass fiber-based friction material is used. It can also be manufactured by the same manufacturing method as described above. Further, as the high thermal conductivity friction material, various types of high thermal conductivity friction materials can be used in addition to the above-mentioned metallic friction materials.
以上詳述したように、本発明は、アスベスト系摩擦材等
の低熱伝導性摩擦材の予備成形時に予備加熱して少し硬
化させるようにしたことにより、予備成形時に積層面に
形成した凹凸形状もやや硬化されるため、その後メタリ
ック系摩擦材等の高熱伝導性摩擦材を積層して熱成形す
る際においても、凹凸形状はくずれることな（、所定の
凹凸形状を維持したまま積層面を結合させることができ
る。その結果、積層面の結合強度を所期どおりの強度と
することができる。As described in detail above, the present invention enables the uneven shape formed on the laminated surface during preforming by preheating and slightly curing the low thermal conductivity friction material such as asbestos-based friction material during preforming. Because it is slightly hardened, the uneven shape does not collapse even when a highly thermally conductive friction material such as a metallic friction material is laminated and thermoformed. As a result, the bonding strength of the laminated surfaces can be made as desired.
図は従来汎用のディスクブレーキ用摩擦バンドを示す正
面図である。
符号の説明
１−一−−メタリ・ツク系摩擦材
２ ゛−−−アスベスト系摩擦材
３−−−−一裏金
出願人 トヨタ自動車株式会社The figure is a front view showing a conventional friction band for a general-purpose disc brake. Explanation of symbols 1-1--Metallic friction material 2 ゛--Asbestos-based friction material 3-----Illegal deposit applicant Toyota Motor Corporation
Claims (1)
アスベスト系摩擦材等、の低熱伝導性摩擦材とが積層さ
れて形成されるディスクブレーキ用摩擦材の製造方法と
して、 所定形状の金型内に低熱伝導性摩擦材を投入して、高熱
伝導性摩擦材との積層面に凹凸をプレスで予備成形する
と共に、この予備成形時に予備加熱して低熱伝導性摩擦
材を少し硬化させ、その後高熱伝導性摩擦材を積層して
プレスで所定の外形形状に押しかため熱成形することを
特徴とするディスクブレーキ用摩擦材の製造方法。(1) A method for manufacturing a friction material for disc brakes, which is formed by laminating a high thermal conductivity friction material such as a metallic friction material and a low thermal conductivity friction material such as an asbestos friction material, is a mold with a predetermined shape. A low thermal conductive friction material is put in the inside, and unevenness is preformed by pressing on the laminated surface with the high thermal conductive friction material, and at the same time, the low thermal conductive friction material is preheated during this preforming to slightly harden the low thermal conductive friction material, and then A method for manufacturing a friction material for disc brakes, which comprises laminating high thermal conductivity friction materials and thermoforming them by pressing them into a predetermined external shape using a press.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58052227A JPS59176327A (en) | 1983-03-28 | 1983-03-28 | Production of friction material for disc brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58052227A JPS59176327A (en) | 1983-03-28 | 1983-03-28 | Production of friction material for disc brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59176327A true JPS59176327A (en) | 1984-10-05 |
Family
ID=12908851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58052227A Pending JPS59176327A (en) | 1983-03-28 | 1983-03-28 | Production of friction material for disc brake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59176327A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02283922A (en) * | 1989-04-21 | 1990-11-21 | Toshiba Tungaloy Co Ltd | Sintered friction material having two layer structure |
| JP2008020071A (en) * | 2006-07-11 | 2008-01-31 | Akebono Corp (North America) | Brake pad made of a plurality of friction member layers |
-
1983
- 1983-03-28 JP JP58052227A patent/JPS59176327A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02283922A (en) * | 1989-04-21 | 1990-11-21 | Toshiba Tungaloy Co Ltd | Sintered friction material having two layer structure |
| JP2008020071A (en) * | 2006-07-11 | 2008-01-31 | Akebono Corp (North America) | Brake pad made of a plurality of friction member layers |
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