JPH05277701A - Manufacture of valve lifter for engine - Google Patents
Manufacture of valve lifter for engineInfo
- Publication number
- JPH05277701A JPH05277701A JP7098392A JP7098392A JPH05277701A JP H05277701 A JPH05277701 A JP H05277701A JP 7098392 A JP7098392 A JP 7098392A JP 7098392 A JP7098392 A JP 7098392A JP H05277701 A JPH05277701 A JP H05277701A
- Authority
- JP
- Japan
- Prior art keywords
- valve lifter
- top plate
- metal
- top board
- ring groove
- 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
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- General Induction Heating (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、エンジンのバルブリフ
タの製造方法に関し、特にカムシャフトのカムが摺動す
る部分（天板部）とバルブリフタ本体とを異種の金属で
構成したバルブリフタの製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an engine valve lifter, and more particularly to a method for manufacturing a valve lifter in which a cam slide portion (top plate portion) and a valve lifter body are made of different kinds of metals. It is a thing.
【０００２】[0002]
【従来の技術】従来より、自動車のエンジンの動弁機構
を構成するバルブリフタの製造方法として、例えば実開
昭６３―１２５１１０号公報に開示されているように、
天板の外周に複数の凹部が形成された耐摩耗性に優れた
セラミック製を用意し、次いで、この凹部が形成された
天板を成形型内にセットした後、該成形型内にアルミニ
ウム合金の溶湯を充填して上記天板を溶湯で鋳ぐるみ、
該溶湯を天板の凹部に流入させて天板とバルブリフタ本
体とが一体に接合されたバルブリフタを得る方法が知ら
れている。そして、このバルブリフタでは、セラミック
製の天板でカムとの摺動による摩耗に十分に耐えるとと
もに、アルミニウム合金製のバルブリフタ本体で軽量化
を図るようになされている。2. Description of the Related Art Conventionally, as disclosed in, for example, Japanese Utility Model Laid-Open No. 63-125110, as a method of manufacturing a valve lifter which constitutes a valve operating mechanism of an automobile engine,
Prepare a ceramic having excellent wear resistance in which a plurality of recesses are formed on the outer periphery of the top plate, and then set the top plate in which the recesses are formed in a forming die, and then, in the forming die, an aluminum alloy. Filled with molten metal, and the top plate is cast with molten metal,
A method is known in which the molten metal is caused to flow into the recess of the top plate to obtain a valve lifter in which the top plate and the valve lifter body are integrally joined. In this valve lifter, the ceramic top plate sufficiently withstands wear due to sliding with the cam, and the valve lifter body made of an aluminum alloy is used to reduce the weight.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上述の如く
バルブリフタをセラミックとアルミニウム合金との異種
金属で構成すると、両者は濡れ性が悪く、しかも熱膨張
差があることから、天板とバルブリフタ本体との接合強
度が弱くなるという問題があり、エンジンの高出力化に
伴い益々過酷な条件下で使用される状況にあるバルブリ
フタにおいては、天板とバルブリフタ本体との接合強度
を向上させる必要に迫られているのが現状である。However, when the valve lifter is made of different metals such as ceramic and aluminum alloy as described above, both have poor wettability and have a difference in thermal expansion. However, in the case of valve lifters that are being used under increasingly severe conditions as engine output increases, it is necessary to improve the bonding strength between the top plate and the valve lifter body. It is the current situation.
【０００４】本発明はかかる点に鑑みてなされたもので
あり、その目的とするところは、天板に形成された溝に
適切な介装材を介在させるとともに、該介装材と溶湯と
を融合させることにより、異種金属である天板とバルブ
リフタ本体とを強固に接合せんとすることにある。The present invention has been made in view of the above points, and an object of the present invention is to interpose an appropriate interposing material in a groove formed in a top plate and to dispose the interposing material and the molten metal. By fusing, the top plate, which is a dissimilar metal, and the valve lifter body are firmly joined together.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
め、本発明の第１の解決手段は、セラミック製天板をバ
ルブリフタ本体を成形する軽金属製溶湯で鋳ぐるんでな
るエンジンのバルブリフタの製造方法として、まず、外
周にリング溝が形成されたセラミック製天板を用意す
る。次いで、該天板のリング溝に金属製介装材を配置す
る。その後、上記天板を成形型内にセットした後、上記
介装材を加熱手段で加熱した状態で成形型内に軽金属製
溶湯を充填して天板を該溶湯で鋳ぐるみ、天板と軽金属
製バルブリフタ本体とが一体に接合されたバルブリフタ
を得るようにする。In order to achieve the above object, the first solution of the present invention is to manufacture a valve lifter for an engine, which is formed by casting a ceramic top plate with a molten metal made of light metal for forming a valve lifter body. As a method, first, a ceramic top plate having a ring groove formed on its outer periphery is prepared. Next, a metal interposer is placed in the ring groove of the top plate. After that, after setting the top plate in the forming die, a molten metal made of light metal is filled in the forming die in a state where the interposition material is heated by the heating means, and the top plate is cast with the molten metal, the top plate and the light metal. (EN) A valve lifter in which a valve lifter body made of one body is integrally joined.
【０００６】本発明の第２の解決手段は、第１の解決手
段において、加熱手段を高周波誘導加熱装置で構成した
ことである。A second solving means of the present invention is that the heating means in the first solving means comprises a high frequency induction heating device.
【０００７】本発明の第３の解決手段は、第１及び第２
の解決手段において、介装材を金属メッキ層で構成した
ことである。A third solution means of the present invention is the first and second means.
In the solving means, the interposing material is composed of a metal plating layer.
【０００８】本発明の第４の解決手段は、第１及び第２
の解決手段において、介装材を金属細線で構成したこと
である。A fourth solution means of the present invention is the first and second means.
In the solving means, the interposing material is composed of thin metal wires.
【０００９】[0009]
【作用】上記の構成により、本発明の第１〜４の解決手
段では、セラミック製天板と軽金属製バルブリフタ本体
とは、上記天板のリング溝に配置された金属メッキ層や
金属細線等の金属製介装材を介して接合されることか
ら、両者を直接に接合する場合に比べて濡れ性が良くな
り、接合強度が大きくなる。With the above-mentioned structure, in the first to fourth means for solving the problems of the present invention, the ceramic top plate and the light metal valve lifter main body are made of metal plating layers or thin metal wires arranged in the ring groove of the top plate. Since they are joined via the metallic interposition material, the wettability is improved and the joining strength is increased as compared with the case of directly joining the both.
【００１０】また、上記天板を軽金属製溶湯で鋳ぐるむ
際、金属製介装材が加熱手段としての高周波誘導加熱装
置によって加熱されることから、該箇所における溶湯の
流動性が良くなって上記リング溝への溶湯の充填性が向
上するとともに、上記介装材および溶湯の金属組織が融
合（拡散結合）し、異種金属である天板とバルブリフタ
本体とが強固に接合される。Further, when the above-mentioned top plate is cast with the molten metal of the light metal, the metal interposition material is heated by the high frequency induction heating device as the heating means, so that the fluidity of the molten metal at the location is improved. The filling property of the molten metal into the ring groove is improved, and the interposer and the metal structure of the molten metal are fused (diffusion-bonded) to firmly bond the top plate, which is a dissimilar metal, and the valve lifter body.
【００１１】[0011]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【００１２】図１は本発明の製造方法によって得られた
バルブリフタ１を示す。該バルブリフタ１は、有底筒状
に成形されたアルミニウム合金等の軽金属製バルブリフ
タ本体２と、該バルブリフタ本体２の底部外面（図１上
面）に一体に接合された円板状のセラミック製天板３と
で構成され、上記天板３の外周に形成されたリング溝４
には金属製介装材としての金属メッキ層５が形成され、
天板３のリング溝４部分はこの金属メッキ層５を介して
バルブリフタ本体２に接合されている。なお、図１中、
６は上記天板３を摺動するカムシャフトのカム、７はバ
ルブ、８は該コッタ９を介してバルブ７を支持するリテ
ーナ、１０はバルブ７を上方に付勢するスプリングであ
る。FIG. 1 shows a valve lifter 1 obtained by the manufacturing method of the present invention. The valve lifter 1 includes a valve lifter body 2 made of a light metal such as an aluminum alloy and formed in a cylindrical shape with a bottom, and a disc-shaped ceramic top plate integrally joined to the outer surface of the bottom of the valve lifter body 2 (the upper surface in FIG. 1). 3 and a ring groove 4 formed on the outer periphery of the top plate 3.
Is formed with a metal plating layer 5 as a metal interposer,
The ring groove 4 portion of the top plate 3 is joined to the valve lifter main body 2 via the metal plating layer 5. In addition, in FIG.
6 is a cam of a cam shaft which slides on the top plate 3, 7 is a valve, 8 is a retainer which supports the valve 7 via the cotter 9, and 10 is a spring which biases the valve 7 upward.
【００１３】このようなバルブリフタ１は、次のように
して製造される。The valve lifter 1 as described above is manufactured as follows.
【００１４】まず、図３に示すように、外周にリング溝
４が形成されたＳｉ3 Ｎ4 、ＳｉＣおよびＡｌ2 Ｏ3 等
からなる円板状のセラミック製天板３を用意する。First, as shown in FIG. 3, a disk-shaped ceramic top plate 3 made of Si 3 N 4 , SiC, Al 2 O 3 or the like having a ring groove 4 formed on the outer periphery thereof is prepared.
【００１５】次いで、この天板３のリング溝４にＮｉお
よびＣｕ等の金属メッキを施して金属メッキ層５を形成
する。Next, the ring groove 4 of the top plate 3 is plated with a metal such as Ni and Cu to form a metal plated layer 5.
【００１６】その後、図２に示すように、上記天板３を
例えば４００℃に予熱し、成形型１１を構成する第１金
型１２と第２金型１３とで構成されるキャビティ１４の
底部にセットし、スライド中子１５をキャビティ１４内
に移動させて該スライド中子１５で天板３を動かないよ
うに位置決めする。Thereafter, as shown in FIG. 2, the top plate 3 is preheated to, for example, 400 ° C., and the bottom portion of the cavity 14 constituted by the first mold 12 and the second mold 13 constituting the molding die 11 is formed. The slide core 15 is moved into the cavity 14 and the top plate 3 is positioned so that the slide core 15 does not move.
【００１７】しかる後、第１および第２金型１２，１３
の底部側に隔壁１６を隔てて設けられた加熱手段として
の高周波誘導加熱装置１７で上記金属メッキ層５を例え
ば６００℃に加熱する。Thereafter, the first and second molds 12, 13 are
The metal plating layer 5 is heated to, for example, 600 ° C. by a high-frequency induction heating device 17 as a heating means provided on the bottom side of the partition wall with a partition wall 16 therebetween.
【００１８】その後、上記金属メッキ層５を高周波誘導
加熱装置１７で加熱した状態で成形型１１のキャビティ
１４内に、バルブリフタ本体２を成形する例えばアルミ
ニウム合金（ＡＣ８Ａ、ＡＤＣ１０等）の軽金属製溶湯
１８を充填して天板３を該溶湯１８で鋳ぐるみ、天板３
と軽金属製バルブリフタ本体２とが一体に接合されたバ
ルブリフタ１を得る。Thereafter, the valve lifter main body 2 is molded in the cavity 14 of the mold 11 while the metal plating layer 5 is heated by the high frequency induction heating device 17, for example, a molten metal 18 of a light metal of aluminum alloy (AC8A, ADC10, etc.). And the top plate 3 is cast with the molten metal 18, and the top plate 3
The valve lifter 1 in which the light metal valve lifter body 2 and the light metal valve lifter body 2 are integrally joined is obtained.
【００１９】したがって、得られたバルブリフタ１で
は、天板３とバルブリフタ本体２とが金属メッキ層５を
介して接合していることから、両者を直接に接合する場
合に比べて濡れ性を良くすることができ、接合強度を大
きくすることができる。Therefore, in the obtained valve lifter 1, since the top plate 3 and the valve lifter main body 2 are bonded via the metal plating layer 5, the wettability is improved as compared with the case where both are directly bonded. Therefore, the bonding strength can be increased.
【００２０】また、天板３を溶湯１８で鋳ぐるむ際、金
属メッキ層５を高周波誘導加熱装置１７で加熱している
ことから、該箇所における溶湯１８の流動性を良くする
ことができてリング溝４への溶湯１８の充填性を向上さ
せることができるとともに、上記金属メッキ層５および
溶湯１８の金属組織を境目なく融合させることができ、
異種金属である天板３とバルブリフタ本体２とを強固に
接合することができる。Further, since the metal plating layer 5 is heated by the high-frequency induction heating device 17 when the top plate 3 is cast in the molten metal 18, the fluidity of the molten metal 18 at the location can be improved. The filling property of the molten metal 18 into the ring groove 4 can be improved, and the metal structure of the metal plating layer 5 and the molten metal 18 can be fused seamlessly.
The top plate 3 which is a different kind of metal and the valve lifter main body 2 can be firmly joined.
【００２１】なお、上記実施例では、天板３のリング溝
４に金属メッキ層５を形成したが、この替わりに、例え
ば図４に示すように、鉄等の金属細線１９をリング溝４
に巻き付けるようにしても同様の作用効果を奏すること
ができるものである。Although the metal plating layer 5 is formed in the ring groove 4 of the top plate 3 in the above embodiment, instead of this, for example, as shown in FIG.
Even if it is wrapped around, the same effect can be obtained.
【００２２】[0022]
【発明の効果】以上説明したように、請求項１〜４に係
る本発明方法によれば、セラミック製天板の外周に形成
されたリング溝に金属メッキ層や金属細線等の介装材を
配置し、上記天板を成形型内にセットした後、上記介装
材を高周波誘導加熱装置等の加熱手段で加熱した状態で
成形型内に軽金属製溶湯を充填して天板を該溶湯で鋳ぐ
るむので、天板およびバルブリフタ本体の濡れ性が良く
なって接合強度を改善できる。また、加熱手段の加熱作
用により、リング溝部分における湯流れ性を良くし得て
リング溝への溶湯の充填性を向上させることができると
ともに、上記介装材および溶湯の金属組織を融合させて
異種金属である天板とバルブリフタ本体との接合を強固
にすることができる。As described above, according to the method of the present invention according to claims 1 to 4, the ring groove formed on the outer periphery of the ceramic top plate is provided with an interposing material such as a metal plating layer or a fine metal wire. After placing it and setting the top plate in the forming die, in a state where the interposition material is heated by a heating means such as a high-frequency induction heating device, the forming die is filled with a light metal molten metal and the top plate is filled with the molten metal. Since it is cast, the wettability of the top plate and the valve lifter body is improved, and the joint strength can be improved. Further, by the heating action of the heating means, the flowability of the molten metal in the ring groove portion can be improved, the filling property of the molten metal into the ring groove can be improved, and the interposition material and the metallographic structure of the molten metal are fused. It is possible to strengthen the bond between the top plate, which is a dissimilar metal, and the valve lifter body.
【図１】バルブリフタの縦断面図である。FIG. 1 is a vertical sectional view of a valve lifter.
【図２】注湯後の成形型の縦断面図である。FIG. 2 is a vertical sectional view of a molding die after pouring.
【図３】リング溝に金属メッキ層を形成した天板の要部
拡大縦断面図である。FIG. 3 is an enlarged vertical cross-sectional view of a main part of a top plate in which a metal plating layer is formed in a ring groove.
【図４】リング溝に金属細線を巻き付けた天板の要部拡
大縦断面図である。FIG. 4 is an enlarged vertical cross-sectional view of a main part of a top plate in which a thin metal wire is wound around a ring groove.
１ バルブリフタ ２ バルブリフタ本体 ３ 天板 ４ リング溝 ５ 金属メッキ層（介装材） １１ 成形型 １７ 高周波誘導加熱装置（加熱手段） １８ 溶湯 １９ 金属細線（介装材） 1 Valve Lifter 2 Valve Lifter Main Body 3 Top Plate 4 Ring Groove 5 Metal Plating Layer (Interposition Material) 11 Mold 17 High Frequency Induction Heating Device (Heating Means) 18 Molten Metal 19 Metal Wire (Interposition Material)
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ０１Ｌ 1/14 Ｆ 6965−3Ｇ Ｈ０５Ｂ 6/10 ３３１ 8915−3Ｋ (72)発明者 福島 立人 広島県安芸郡府中町新地３番１号 マツダ 株式会社内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Internal reference number FI Technical display location F01L 1/14 F 6965-3G H05B 6/10 331 8915-3K (72) Inventor Fukushima Tatsuto Hiroshima 3-1, Shinchi, Fuchu-cho, Aki-gun, Makida Co., Ltd.
Claims (4)
成形する軽金属製溶湯で鋳ぐるんでなるエンジンのバル
ブリフタの製造方法であって、外周にリング溝が形成さ
れたセラミック製天板を用意し、次いで、該天板のリン
グ溝に金属製介装材を配置し、その後、上記天板を成形
型内にセットした後、上記介装材を加熱手段で加熱した
状態で成形型内に軽金属製溶湯を充填して天板を該溶湯
で鋳ぐるみ、天板と軽金属製バルブリフタ本体とが一体
に接合されたバルブリフタを得ることを特徴とするエン
ジンのバルブリフタの製造方法。1. A method of manufacturing an engine valve lifter, which comprises casting a ceramic top plate in a light metal melt for forming a valve lifter body, wherein a ceramic top plate having a ring groove formed on its outer periphery is prepared. , A metal interposing material is placed in the ring groove of the top plate, and then the top plate is set in the forming die, and then the interposing material is heated by the heating means, and the light metal molten metal is placed in the forming die. A method of manufacturing a valve lifter for an engine, characterized in that a valve lifter in which a top plate and a valve lifter body made of a light metal are integrally joined together by filling the top plate with the molten metal.
とを特徴とする請求項１記載のエンジンのバルブリフタ
の製造方法。2. The method of manufacturing a valve lifter for an engine according to claim 1, wherein the heating means is a high frequency induction heating device.
とする請求項１及び２記載のエンジンのバルブリフタの
製造方法。3. The method of manufacturing an engine valve lifter according to claim 1, wherein the interposing material is a metal plating layer.
る請求項１及び２記載のエンジンのバルブリフタの製造
方法。4. The method of manufacturing an engine valve lifter according to claim 1, wherein the interposing material is a thin metal wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7098392A JPH05277701A (en) | 1992-03-27 | 1992-03-27 | Manufacture of valve lifter for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7098392A JPH05277701A (en) | 1992-03-27 | 1992-03-27 | Manufacture of valve lifter for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05277701A true JPH05277701A (en) | 1993-10-26 |
Family
ID=13447276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7098392A Pending JPH05277701A (en) | 1992-03-27 | 1992-03-27 | Manufacture of valve lifter for engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05277701A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10000666A1 (en) * | 2000-01-11 | 2001-07-12 | Begere Oliver | Outer tube transmission functional headphones |
-
1992
- 1992-03-27 JP JP7098392A patent/JPH05277701A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10000666A1 (en) * | 2000-01-11 | 2001-07-12 | Begere Oliver | Outer tube transmission functional headphones |
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