JPH04200853A - Production of rocker arm - Google Patents
Production of rocker armInfo
- Publication number
- JPH04200853A JPH04200853A JP33204390A JP33204390A JPH04200853A JP H04200853 A JPH04200853 A JP H04200853A JP 33204390 A JP33204390 A JP 33204390A JP 33204390 A JP33204390 A JP 33204390A JP H04200853 A JPH04200853 A JP H04200853A
- Authority
- JP
- Japan
- Prior art keywords
- rocker arm
- difficult
- main body
- chip part
- work
- 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.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 18
- 238000005266 casting Methods 0.000 claims abstract description 8
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 7
- 239000000057 synthetic resin Substances 0.000 claims abstract description 7
- 229910002065 alloy metal Inorganic materials 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims 1
- 239000000919 ceramic Substances 0.000 abstract description 11
- 229910052751 metal Inorganic materials 0.000 abstract description 7
- 239000002184 metal Substances 0.000 abstract description 7
- 239000006260 foam Substances 0.000 abstract description 4
- 239000003110 molding sand Substances 0.000 abstract description 4
- 101100441413 Caenorhabditis elegans cup-15 gene Proteins 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 3
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 239000011347 resin Substances 0.000 abstract description 2
- 229920005989 resin Polymers 0.000 abstract description 2
- 229910000838 Al alloy Inorganic materials 0.000 abstract 1
- 229910000743 fusible alloy Inorganic materials 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 description 9
- 239000000956 alloy Substances 0.000 description 9
- 208000015943 Coeliac disease Diseases 0.000 description 6
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 238000004512 die casting Methods 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 229910010271 silicon carbide Inorganic materials 0.000 description 4
- 230000005856 abnormality Effects 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000155 melt Substances 0.000 description 2
- 239000011156 metal matrix composite Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229920006328 Styrofoam Polymers 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229920006248 expandable polystyrene Polymers 0.000 description 1
- 229910000765 intermetallic Inorganic materials 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 229910052863 mullite Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920006327 polystyrene foam Polymers 0.000 description 1
- 239000011226 reinforced ceramic Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000008261 styrofoam Substances 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
ａ、 産業上の利用分野
本発明は、車輌等のエンジンに用いるロッカーアームの
、特にセラミックス等の難加工性材料を接合したロッカ
ーアームの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION a. Field of Industrial Application The present invention relates to a method of manufacturing a rocker arm used in an engine of a vehicle, particularly a rocker arm bonded with a difficult-to-process material such as ceramics.
ｂ、 従来の技術
従来、セラミックス等の加１の困難な材料を、Ａ１合金
等に接合する場合には、たとえば金型を用いたダイカス
トによって、鋳造と同時にへＡ合金に鋳ぐるむ方法がと
られていた。b. Conventional technology Conventionally, when joining materials such as ceramics that are difficult to process to A1 alloy, etc., a method has been used in which the material is cast into A1 alloy at the same time as casting, for example by die casting using a mold. It was getting worse.
Ｃ１発明が解決しようとする課題
ところが、前記のようにダイカストによって鋳くるむ方
法は、高価な金型を必要とし、多品種。C1 Problems to be Solved by the Invention However, the die-casting method described above requires expensive molds and a wide variety of products.
少量生産には適していない。また、ダイカス１−による
方法は、鋳込時に、ＡＩ！、合金の溶湯が高速で金型内
に入り込むため、機械的、熱的衝撃が大きく、そのため
、金型内にセットシであるセラミックス等は破壊しやす
い。特にロッカーアームの先端部にセラミックス等の難
加工性材料からなるチップ部を鋳ぐるむことは非常に困
難であった。Not suitable for small quantity production. In addition, in the method using die casting 1-, AI! Since the molten alloy enters the mold at high speed, the mechanical and thermal shock is large, and as a result, ceramics and the like set in the mold are easily destroyed. In particular, it is extremely difficult to cast a tip made of a difficult-to-process material such as ceramics into the tip of the rocker arm.
本発明は、前記事情に鑑みてなされたもので、前記問題
点を解消してなるロッカーアームの製造方法を掃供する
ことを目的とする。The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a method for manufacturing a rocker arm that eliminates the above-mentioned problems.
ｄ、 課題を解決するだめの手段
前記目的に添い、本発明はロッカーアームを鋳造する場
合において、ロッカーアームの本体を発泡合成樹脂で成
形し、これに保合部を備えた難加工性材料からなるチッ
プ部を係合止着したあと、鋳物砂内に埋込み、これにロ
ッカーアーム本体を構成する低融合金を鋳込んで前記発
泡合成樹脂の部分を消失せしめながら、前記難加工性材
料のチップ部を鋳ぐるむことによって、前記課題を解消
した。d. Means for Solving the Problems In accordance with the above object, the present invention, when casting a rocker arm, molds the main body of the rocker arm from a foamed synthetic resin, and molds the main body of the rocker arm from a difficult-to-process material with a retaining part. After the chip part is engaged and fixed, the chip part of the difficult-to-process material is embedded in molding sand, and the low alloy metal that makes up the rocker arm body is cast therein, and the foamed synthetic resin part is removed. The above problem was solved by casting the parts.
以下、本発明について図面を参照しながら詳細に説明す
る。Hereinafter, the present invention will be explained in detail with reference to the drawings.
本発明において対象とする難加工性材料として、八Ｉ！
、ｚ（ｈ、 Ｚ−０□、 ＳｉＣ，Ｓｉ３Ｎ４． サ
イアロン、ムライト、 Ａ ｌ ｚＴｉＯｓ などセラ
ミックス、またＡ ｆ ２０３／Ｚｒ（ｈ＋ Ａ １．
ｚＯｔ／Ｔｉｃ、セラミックスウィスカー強化セラミ
ックス等の複合セラミックス、またＴｉＡ Ｅ 。As the difficult-to-process material targeted in the present invention, eight I!
, z(h, Z-0□, SiC, Si3N4. Ceramics such as sialon, mullite, Al zTiOs, and A f 203/Zr(h+ A 1.
Composite ceramics such as zOt/Tic, ceramic whisker-reinforced ceramics, and TiA E .
Ｔｉ３Ａｊ２ 、 ＮｉＡ Ｉ！、、 Ｎｉｉ八βへの
金属間化合物、またＳｉＣウィスカー、 ＳｊＣ粒子分
散強化金属等のＭＭＣ（メタルマトリックスコンポジッ
ト）、またＷＣＣｏ、 ＦｅＣｒ等の焼結合金がある。Ti3Aj2, NiA I! There are also intermetallic compounds for Nii 8β, SiC whiskers, MMC (metal matrix composites) such as SjC particle dispersion strengthened metals, and sintered alloys such as WCCo and FeCr.
本発明において用いる消失模型鋳型の材料は、発泡した
合成樹脂であり、たとえば発泡スチロール、発泡ウレタ
ン、発泡ポリメチルメタクリレート等を用いる。The material of the vanishing model mold used in the present invention is a foamed synthetic resin, such as foamed polystyrene, foamed urethane, foamed polymethyl methacrylate, and the like.
また難加工材料を接合する金属としては、低融点合金で
あって、たとえばへ！合金、 Ｍｇ合金および亜鉛合金
を用いる。In addition, low melting point alloys are suitable for joining difficult-to-process materials, such as ! alloy, Mg alloy and zinc alloy.
次に前記材料を用いてロッカーアームを製造する場合に
ついて説明する。Next, a case will be described in which a rocker arm is manufactured using the above material.
第２図は製造されるロッカーアームの側面図を示し、シ
ャフトの貫通孔１を有する本体２と、カムと当接する先
端のチップ部３とからなる。FIG. 2 shows a side view of the rocker arm to be manufactured, which consists of a main body 2 having a shaft through hole 1, and a tip portion 3 at the distal end that comes into contact with a cam.
チップ部３は耐摩耗性が要求され、従って核部には前記
のようなセラミックス等の難加工材料を用いる。本発明
では第３図に示すようにカマボコ状の曲面部３ａと突出
した係合部３ｂとからなるチップ部３を用いる。The tip portion 3 is required to have wear resistance, and therefore the core portion is made of a difficult-to-process material such as ceramics as described above. In the present invention, as shown in FIG. 3, a tip portion 3 consisting of a semicylindrical curved surface portion 3a and a protruding engaging portion 3b is used.
まず、第１図に示すように、ロッカーアームとなる本体
２を発泡樹脂、たとえば発泡スチロールによって成形し
、消失模型２ａを作る。First, as shown in FIG. 1, the main body 2 that will become the rocker arm is molded from foamed resin, such as styrene foam, to create a disappearing model 2a.
また、チップ部３を前記のようにセラミックス等によっ
て成形し、発泡スチロールで成形した前記消失模型２ａ
の先端に固定する。この固定方法としてはチップ部３の
保合部３ｂを消失模型２ａの先端に嵌め込み、必要に応
じて接着剤で接着する。なお、使用する接着剤は、消失
模型を溶解したり、変形させるものであってはならない
。Further, the chip portion 3 is molded from ceramics or the like as described above, and the vanishing model 2a is molded from styrene foam.
Fix it to the tip of the As for this fixing method, the retaining part 3b of the chip part 3 is fitted into the tip of the disappearing model 2a, and bonded with an adhesive if necessary. The adhesive used must not dissolve or deform the disappearing model.
また、このチップ部３の角部は適宜面取りをおこなって
おく。Further, the corners of this chip portion 3 are chamfered as appropriate.
このようにして製作した鋳型を、第１図に示すような状
態に鋳枠１１内に収容した鋳物砂１２内に埋込み、湯道
１３、湯口１４および湯口カップ１５を図に示すように
設ける。The mold thus produced is embedded in molding sand 12 housed in a flask 11 as shown in FIG. 1, and a runner 13, sprue 14 and sprue cup 15 are provided as shown in the figure.
次に取鍋２０に収容したＡ１合金の溶湯２１を湯口カッ
プ１５に注ぎ込む。湯口１４から湯道１３を経て流れ込
んだ溶湯２１は、消失模型２ａを溶かして消失させると
ともに、生じた空間に充填される。そしてチップ部３の
係合部３ｈを包み込む。Next, the molten metal 21 of A1 alloy contained in the ladle 20 is poured into the sprue cup 15. The molten metal 21 flowing from the sprue 14 through the runner 13 melts and causes the disappearing model 2a to disappear, and fills the created space. Then, the engaging portion 3h of the tip portion 3 is wrapped.
溶湯が凝固した後、脱型すればＡ１合金からなる本体の
先端に難加工材料からなるチップ部３を備えたロッカー
アームが得られる。After the molten metal has solidified, it is removed from the mold to obtain a rocker arm having a tip portion 3 made of a difficult-to-process material at the tip of a main body made of A1 alloy.
具体例１
第２図に示すようなロッカーアームを、発泡スチロール
で成形した。同じく第３図に示すような形状のチップ部
を窒化ケイ素によって成形した。Specific Example 1 A rocker arm as shown in FIG. 2 was molded from polystyrene foam. Similarly, a chip portion having the shape shown in FIG. 3 was molded from silicon nitride.
この窒化ケイ素製のチップ部を前記発泡スチロールの前
端の所定の位置に嵌設固定した。この模型を第１図に示
す要領で鋳枠内に埋込み、必要な湯道、湯口、湯口カッ
プをつくり、Ａ１合合金Ｃ４Ｃの約７５０°Ｃの温度の
溶湯を鋳込んだ。凝固後、脱型し、機械加工を施して第
２図に示すようなロッカーアームを製作した。This silicon nitride chip was fitted and fixed at a predetermined position on the front end of the styrofoam. This model was embedded in a casting flask as shown in Figure 1, the necessary runners, sprues, and sprue cups were made, and molten metal of A1 alloy C4C at a temperature of about 750°C was cast. After solidification, the mold was demolded and machined to produce a rocker arm as shown in Figure 2.
このロッカーアームを２００時間連続の実機モータリン
グテストをしたところ、この窒化ケイ素のチップはロッ
カーアーム本体から脱落せず、特に異常は認められなか
った。When this rocker arm was subjected to a 200-hour continuous motoring test on an actual machine, the silicon nitride chip did not fall off from the rocker arm body, and no particular abnormality was observed.
具体例２
０ツカ−アームのチップ部に炭化ケイ索類のものを用い
、具体例１の場合と同様な方法で鋳ぐるみロッカーアー
ムを得た。このロッカーアームを２００時間連続の実機
モータリングテストをしたところ、この炭化ケイ素製チ
ップは脱落せず、異常は認められなかった。Concrete Example 2 A cast rocker arm was obtained in the same manner as in Concrete Example 1, using a silicon carbide cord for the tip portion of the arm. When this rocker arm was subjected to a 200-hour continuous motoring test, the silicon carbide chip did not fall off and no abnormality was observed.
具体例３
６一
ロッカーアームのチップ部にアルミナを用い、具体例１
と同じ要領で鋳くるの、同じ要領でテスＩ・を実施ｊ〜
たと、二ろ、アル８す製チップは脱落せず、■」ツカ−
アームにＷ常は認められなかった。Specific example 3 Using alumina for the tip part of the 6-rocker arm, specific example 1
Cast in the same manner as , and perform test I in the same manner.
The chips made from aluminum and aluminum did not fall off, and the tips were
W was not allowed on the arm.
具体例４
０ツカ−゛アームのチップ部にジルコニア製チップを用
い、具体例１と同じ要領で鋳ぐるみ、同じ要領でテスｌ
−をしたところ、同トップは脱落せず、異常は認められ
なかった。Specific example 4 A zirconia tip was used for the tip of the 0-tsuka arm, and it was cast in the same manner as in specific example 1, and tested in the same manner.
-, the top did not fall off and no abnormality was found.
ｅ、 発明の効果
以−［−のように本発明に係るロッカーアームの製造方
法によれば、ダイカストに比較し高価な金型を使用する
ことなく、難加工材料からなるチップ部を鋳ぐるむこと
が可能２二なり、′コストダウンの効果が得られる。e. Effects of the Invention - According to the method for manufacturing a rocker arm according to the present invention as described in [-], a tip portion made of a difficult-to-process material can be cast without using a mold that is more expensive than die casting. This makes it possible to achieve the cost reduction effect.
鋳込の際心こば、発泡合成樹脂を消失しながら湯が流れ
るため、溶湯による熱的１ｍ械的な衝撃が緩衝され、靭
性の低いセラミックス（たとえば、＾１！ｚ（ｈ 、Ｓ
ｉＣ等）や熱衝撃に弱いセラミックス（たとえばＺｒＯ
□等）でも容易に鋳ぐるむことが可能となった。During casting, the melt flows while dissipating the foamed synthetic resin, which buffers the thermal and mechanical impact of the molten metal.
iC, etc.) and ceramics that are susceptible to thermal shock (e.g. ZrO)
□, etc.) can now be easily cast.
第１図は本発明に係る方法の実施要領の説明図、第２図
は製造したロッカーア・−１１の説明図、第３図はチッ
プ部の斜視図を示す。
２・・・ロッカーアームの本体、
３・・・チップ部。FIG. 1 is an explanatory diagram of the implementation procedure of the method according to the present invention, FIG. 2 is an explanatory diagram of the manufactured rocker-11, and FIG. 3 is a perspective view of the tip portion. 2... Main body of rocker arm, 3... Chip part.
Claims (1)
ムの本体を発泡合成樹脂で成形し、これに係合部を備え
た難加工性材料からなるチップ部を係合止着したあと、
鋳物砂内に埋込み、これにロッカーアーム本体を構成す
る低融合金を鋳込んで前記発泡合成樹脂の部分を消失せ
しめながら、前記難加工性材料のチップ部を鋳ぐるむこ
とを特徴とするロッカーアームの製造方法。When casting a rocker arm, the main body of the rocker arm is molded from a foamed synthetic resin, and after a tip part made of a difficult-to-process material and an engaging part is engaged and fixed,
A rocker characterized in that the tip portion of the difficult-to-process material is embedded in casting sand, and a low alloy metal constituting the rocker arm body is cast therein to eliminate the foamed synthetic resin portion. How to manufacture the arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332043A JP3033187B2 (en) | 1990-11-29 | 1990-11-29 | Rocker arm manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2332043A JP3033187B2 (en) | 1990-11-29 | 1990-11-29 | Rocker arm manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04200853A true JPH04200853A (en) | 1992-07-21 |
| JP3033187B2 JP3033187B2 (en) | 2000-04-17 |
Family
ID=18250502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2332043A Expired - Lifetime JP3033187B2 (en) | 1990-11-29 | 1990-11-29 | Rocker arm manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3033187B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570889A (en) * | 2022-02-24 | 2022-06-03 | 天地上海采掘装备科技有限公司 | Casting process of rocker arm shell of ultra-thick coal seam mining machine |
-
1990
- 1990-11-29 JP JP2332043A patent/JP3033187B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570889A (en) * | 2022-02-24 | 2022-06-03 | 天地上海采掘装备科技有限公司 | Casting process of rocker arm shell of ultra-thick coal seam mining machine |
| CN114570889B (en) * | 2022-02-24 | 2024-05-03 | 天地上海采掘装备科技有限公司 | Casting technology of rocker arm shell of super-thick coal seam coal mining machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3033187B2 (en) | 2000-04-17 |
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