JPH02207939A - Production of valve lifter - Google Patents

Production of valve lifter

Info

Publication number
JPH02207939A
JPH02207939A JP2944789A JP2944789A JPH02207939A JP H02207939 A JPH02207939 A JP H02207939A JP 2944789 A JP2944789 A JP 2944789A JP 2944789 A JP2944789 A JP 2944789A JP H02207939 A JPH02207939 A JP H02207939A
Authority
JP
Japan
Prior art keywords
circular
metal
stock
thick
final product
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
Application number
JP2944789A
Other languages
Japanese (ja)
Inventor
Yasuo Iwata
岩田 泰男
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP2944789A priority Critical patent/JPH02207939A/en
Publication of JPH02207939A publication Critical patent/JPH02207939A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21KMAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K1/00Making machine elements
    • B21K1/20Making machine elements valve parts

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

PURPOSE:To produce the valve lifter having excellent strength and wear resistance at a low cost by forming a thick circular stock consisting of a circular part made of a composite reinforced metal and an annular part made of a metal, and subjecting this stock to hot backward extrusion molding and drawing, thereby forming the stock to a cup shape having a deep bottom. CONSTITUTION:The annular part 13 made of the non-composite metal, such as Al alloy, is integrally provided with the outer periphery of the circular part made of the composite reinforced metal consisting of a base material 11, such as Al alloy, and a reinforcing material 12, such as SiC short fibers to obtain the stock 1 having the thick circular shape over the entire part. This stock 1 is subjected to the hot backward extrusion molding to obtain a product 2 in progress consisting of the base part 22 made of the composite reinforced metal having the cup shape which is opened at one end 20 and closed at the other end 21 and has a shallow depth H1, and the thick cylindrical part 23 made of the non-reinforced metal. Mainly the thick cylindrical 23 of this product 2 in progress is elongated by drawing or drawing with ironing in the axial line P direction. The final product 3 having the cup shape consisting of the thin cylindrical 33 and the bottom part 32 of the deep depth H2 is obtd. in this way. The outside diameter d1 of the circular part 10 of the stock 1 and the outside diameter d3 of the final product 3 are specified to d1>=d3 in this case.

Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は、バルブリフターの製造方法に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a method for manufacturing a valve lifter.

[従来の技術] 内燃機関に用いられるセンターガイド方式のバルブリフ
ターは、第10図に示されるように底部と筒部とからな
るカップ状である。従来このバルブリフター30は、全
体が複合強化金属材料で作られていた。バルブリフター
3Cは、内燃機関の吸気バルブあるいは排気バルブの動
弁機溝に作動部品のひとつとして組込まれて使用され、
カム4との間に装置されたシム5との当り面30c及び
バルブステム6との当り面31Gに強度および対摩耗性
が要求されている。
[Prior Art] A center guide type valve lifter used in an internal combustion engine is cup-shaped and has a bottom portion and a cylindrical portion, as shown in FIG. Conventionally, this valve lifter 30 has been made entirely of a composite reinforced metal material. The valve lifter 3C is used by being incorporated into the valve gear groove of the intake valve or exhaust valve of an internal combustion engine as one of the operating parts.
The contact surface 30c with the shim 5 disposed between the cam 4 and the contact surface 31G with the valve stem 6 are required to have strength and wear resistance.

[発明が解決しようとする課題] しかし従来のバルブリフター3Cは、バルブステム6と
の当り面31Gおよびシム5との当り面30Gの両者の
強度および耐摩耗性を向上させる反面、全体を複合強化
金属材で形成されているため、コスト的に不利なものと
なる。
[Problems to be Solved by the Invention] However, while the conventional valve lifter 3C improves the strength and wear resistance of both the contact surface 31G with the valve stem 6 and the contact surface 30G with the shim 5, it does not have composite reinforcement as a whole. Since it is made of metal, it is disadvantageous in terms of cost.

本発明は、上記従来の問題点を解決したバルブリフター
の製造方法を提供することを目的とする。
An object of the present invention is to provide a method for manufacturing a valve lifter that solves the above-mentioned conventional problems.

[課題を解決するための手段] 本発明は、複合強化金属で形成された円形部と該円形部
の外周に一体的に非複合金属で形成された環状部とから
なる全体が厚板円形状の素材を、熱間後方押出し成形に
より一端が開口され他端が閉じた深さが浅いカップ状の
底部と肉厚筒部とからなる中間製品を形成する第1工程
と、該第1工程により形成された該中間製品の主として
該肉厚筒部を絞り加工あるいは絞りしごき加工により軸
心線方向に伸長させ底が深いカップ形状の最終製品を形
成する第2工程とからなり、該素材の該円形部の外径寸
法≧該最終製品の外径寸法の関係にあることを特徴とす
るものである。
[Means for Solving the Problems] The present invention provides a thick plate having a circular shape as a whole, consisting of a circular portion formed of a composite reinforced metal and an annular portion integrally formed of a non-composite metal around the outer periphery of the circular portion. A first step of forming an intermediate product consisting of a shallow cup-shaped bottom with one end open and the other end closed and a thick cylindrical portion by hot backward extrusion molding the material; A second step of elongating the thick cylindrical portion of the formed intermediate product in the axial direction by drawing or drawing and ironing to form a final product in the shape of a cup with a deep bottom; The present invention is characterized in that the outer diameter of the circular portion is greater than or equal to the outer diameter of the final product.

本発明のバルブリフターの製造方法は、第1工程と第2
工程とからなる。
The method for manufacturing a valve lifter of the present invention includes a first step and a second step.
It consists of a process.

第1工程は、全体が厚板円形状の素材を、熱間後方押出
成形により一端が開口され他端が閉じた深さが深いカッ
プ状の底部と肉厚筒部とからなるバルブリフターの中間
製品を形成するものである。
The first step involves hot backward extrusion molding of a thick circular material into a deep cup-shaped bottom with one end open and the other closed, and a thick cylindrical part. It forms the product.

前記素材は、複合強化金属で形成された円形部と、前記
円形部の外周に一体的に配置され非複合金属で形成され
た環状部とからなる。前記円形部を形成する複合強化金
属は、金属からなる母材と、この母材に混入された繊維
状の補強材料とからなる。
The material includes a circular part made of a composite reinforcing metal and an annular part made of a non-composite metal and integrally disposed around the outer periphery of the circular part. The composite reinforcing metal forming the circular portion includes a base material made of metal and a fibrous reinforcing material mixed into the base material.

母材はアルミニウム合金、マグネシウム合金等の軽合金
あるいはアルミニウム、マグネシウム等の金属を用いる
ことができる。補強材としては、炭化珪素繊維、アルミ
ナgi維等の無機繊維を用いることができる。なお前記
母材金属中に混入される補強材料は、母材金属の量に対
して最大的30%の割合に混入されたものが使用できる
。なお、前記補強材料としては短繊維状のものを用いて
補強を図ることが望ましい。
The base material can be a light alloy such as an aluminum alloy or a magnesium alloy, or a metal such as aluminum or magnesium. As the reinforcing material, inorganic fibers such as silicon carbide fibers and alumina GI fibers can be used. It should be noted that the reinforcing material mixed into the base metal can be used at a maximum ratio of 30% to the amount of the base metal. Note that it is desirable to use a short fiber-like reinforcing material for reinforcement.

第2工程は、前記中間製品を最終製品に形成する加工工
程である。すなわち、第1工程により形成された中間製
品の主として肉厚筒部を絞り加工あるいは絞りしごき加
工により軸心線方向に伸長させ、底が深いカップ形状の
最終製品を形成するものである。絞り加工あるいは絞り
しごき加工は従来一般的に用いられるものを用いて行な
うことができる。
The second step is a processing step of forming the intermediate product into a final product. That is, mainly the thick-walled cylindrical portion of the intermediate product formed in the first step is expanded in the axial direction by drawing or drawing and ironing to form a final product in the shape of a cup with a deep bottom. The drawing process or drawing process can be performed using a conventionally commonly used process.

本発明のバルブリフターの製造方法の特徴は、素材の円
形部分の外径寸法≧最終製品の外径寸法の関係にあるよ
うになしたことにある。このように構成することによっ
て前記第2工程を終えた最終製品は、複合強化金属と非
複合金属との境界部分あるいは非複合金属部分がステム
との当り面あるいはシム当り面を形成しない。すなわち
、最終製品となってステムとの当り面、シムとの当り面
を形成する部分は、複合強化金属部分で形成され、かつ
強度及び耐摩耗性を向上させ得る。
A feature of the method for manufacturing a valve lifter of the present invention is that the outer diameter of the circular portion of the material ≧ the outer diameter of the final product. With this configuration, in the final product after the second step, the boundary between the composite reinforcing metal and the non-composite metal or the non-composite metal portion does not form a contact surface with the stem or a shim contact surface. That is, the parts that form the contact surface with the stem and the contact surface with the shim in the final product are formed of composite reinforced metal parts, and can improve strength and wear resistance.

[作用及び効果] 本発明のバルブリフターの製造方法は、第1工程、第2
工程と順に実施される。第1工程では、加工に先立ち複
合強化金属で形成された円形部と、この円形部の外周に
一体的に配置され非複合金属で形成された環状部とから
なる全体が厚板円形状の素材が用意される。この素材は
、熱間後方押出成形により加工されて、一端が開口され
他端が閉じた深さが浅いカップ状の底部と肉厚筒部とか
らなる中間製品となる。そして第2工程では、前記中間
製品の主として肉厚筒部を絞り加工あるいは絞りしごき
加工により軸心線方向に伸長させる。
[Operations and Effects] The method for manufacturing a valve lifter of the present invention includes a first step, a second step, and a second step.
The steps are carried out in order. In the first step, prior to machining, a material is made into a thick plate circular shape as a whole, consisting of a circular part made of a composite reinforced metal and an annular part made of a non-composite metal, which is integrally arranged around the outer periphery of the circular part. will be prepared. This material is processed by hot backward extrusion to form an intermediate product consisting of a shallow cup-shaped bottom with one end open and the other end closed, and a thick-walled cylinder. In the second step, mainly the thick-walled cylindrical portion of the intermediate product is expanded in the axial direction by drawing or drawing or ironing.

これにより前記中間製品は、底が深いカップ形状の最終
製品となり、かつ前記素材の円形部の外径寸法≧最終製
品の外径寸法の関係にある最終製品が完成する。
As a result, the intermediate product becomes a cup-shaped final product with a deep bottom, and a final product is completed in which the relationship of the outer diameter of the circular portion of the material≧the outer diameter of the final product is satisfied.

従って本発明のバルブリフターの製造方法によって製造
されたバルブリフターは、吸気バルブあるいは排気バル
ブの動弁機構の作動部品のひとつとして他の作動部品と
ともに組込まれて使用される時、他の作動部品と接触す
る部分、すなわち強度及び耐摩耗性が要求される部分が
、これを満す複合強化金属で形成されているので、耐久
性を増すことができる。また、作動部品が接触しないバ
ルブリフターの他の部分は非複合強化金属で形成するこ
とができるのでコストを低減することができる。
Therefore, when the valve lifter manufactured by the method for manufacturing a valve lifter of the present invention is used as one of the working parts of the valve mechanism of an intake valve or an exhaust valve, it can be used together with other working parts. Since the contacting parts, that is, the parts that require strength and wear resistance, are made of a composite reinforced metal that satisfies these requirements, durability can be increased. Additionally, other parts of the valve lifter that are not in contact with actuating parts can be formed from non-composite reinforced metals, reducing costs.

[実施例] 本実施例のバルブリフターの製造方法の実施例の説明に
用いる第1図、第2図、第3図は、それぞれ素材1、中
間製品2、最終製品(バルブリフター、以下同様)3を
示す縦断面図である。また第4図は、本実施例の製造方
法によって得られた最終製品3の使用例を示す縦断面図
である。
[Example] Figures 1, 2, and 3 used to explain the example of the method for manufacturing a valve lifter of this example show a raw material 1, an intermediate product 2, and a final product (valve lifter, the same applies hereinafter), respectively. FIG. Moreover, FIG. 4 is a longitudinal sectional view showing an example of use of the final product 3 obtained by the manufacturing method of this example.

実施例のバルブリフターの製造方法は、素材1を熱間後
方押出し成形により加工して中間製品2を形成する第1
工程と、中間製品2を絞り加工あるいは絞りしごき加工
して最終製品3を形成する第2工程とからなる。
The manufacturing method of the valve lifter of the embodiment includes a first process in which a raw material 1 is processed by hot backward extrusion to form an intermediate product 2.
and a second step in which the intermediate product 2 is drawn or drawn and ironed to form the final product 3.

第1工程では、第1図のように全体が厚板円形状の素材
1が用意される。この素材1は、複合強化金属で形成さ
れた円形部10と非複合金属で形成された環状部13と
からなる。円形部10は、アルミニウム合金からなる母
材11と、この母材11に混入された炭化珪素の短繊維
からなる補強材料12とからなる。この円形部分10の
外径寸法φd1はφ31mm、厚さは5mmである。環
状部13は、アルミニウム合金からなりその内周を円形
部10の外周に一体的に配置されている。
In the first step, a material 1 having a circular thick plate shape as a whole is prepared as shown in FIG. This material 1 consists of a circular part 10 made of a composite reinforcing metal and an annular part 13 made of a non-composite metal. The circular portion 10 is made up of a base material 11 made of an aluminum alloy and a reinforcing material 12 made of short fibers of silicon carbide mixed into the base material 11. The outer diameter dimension φd1 of this circular portion 10 is φ31 mm, and the thickness is 5 mm. The annular portion 13 is made of aluminum alloy, and its inner periphery is integrally arranged with the outer periphery of the circular portion 10 .

そして素材1は、熱間後方押出成形により断面積減少率
が45〜85%の範囲内で加工され、かつ第2図に示す
中間製品2として形成される。この中間製品2は、一端
20が開口され他端21が閉じた深さHlの浅いカップ
状で、複合強化金属により形成された底部22と、非強
化金属により形成された肉厚筒部23とからなる形状と
なっている。この中間製品2の底部22の外表面側の外
径寸法φd2は、φ31 mmである。
The raw material 1 is processed by hot backward extrusion molding so that the cross-sectional area reduction rate is within the range of 45 to 85%, and is formed as an intermediate product 2 shown in FIG. This intermediate product 2 has a shallow cup shape with one end 20 open and the other end 21 closed, with a depth Hl, and has a bottom part 22 made of composite reinforced metal and a thick cylindrical part 23 made of non-reinforced metal. It has a shape consisting of. The outer diameter dimension φd2 of the outer surface side of the bottom portion 22 of this intermediate product 2 is φ31 mm.

第2工程では、第2図に示す中間製品2の主として肉厚
筒部23が絞り加工あるいは絞りしごき加工されて、軸
心線P方向に伸長する。このため前記肉厚筒部23は、
変形して第3図に示すように肉薄筒部33となり、かつ
複合強化金属で形成され深さH2が深い底部32をもつ
カップ形状の最終製品3が形成される。この最終製品3
の外径寸法φd3はφ3’1mmである。
In the second step, mainly the thick-walled cylindrical portion 23 of the intermediate product 2 shown in FIG. 2 is drawn or drawn and ironed to extend in the direction of the axis P. Therefore, the thick cylindrical portion 23 is
A cup-shaped final product 3 is formed which is deformed into a thin-walled cylindrical portion 33 as shown in FIG. 3, and which is made of a composite reinforced metal and has a bottom portion 32 with a deep depth H2. This final product 3
The outer diameter dimension φd3 is φ3'1 mm.

上記第1工程および第2工程により製造された最終製品
3は、素材1の円形部10の外径寸法d1≧最終製品3
の外径寸法d3の関係となる。
The final product 3 manufactured by the first step and the second step is such that the outer diameter dimension d1 of the circular portion 10 of the material 1≧final product 3
The relationship is based on the outer diameter dimension d3.

なお、この関係は、前記素材1より最終製品3が形成さ
れる過程で素材1の円形部10の外径寸法d1=中間製
品2の底部22の外表面側の外径寸法d2、すなわち、
両者の寸法値が第5図に示す直線dのように比例係数を
ほぼ1と設定することによって保持することができる。
This relationship is such that in the process of forming the final product 3 from the raw material 1, the outer diameter dimension d1 of the circular portion 10 of the raw material 1 = the outer diameter dimension d2 of the outer surface side of the bottom portion 22 of the intermediate product 2, that is,
Both dimension values can be maintained by setting the proportionality coefficient to approximately 1 as indicated by the straight line d shown in FIG.

これによって最終製品3の底部32は、すべて複合強化
金属で形成され、かつ底部32の表出面は複合強化金属
が表出した当り面30.31となる。
As a result, the bottom portion 32 of the final product 3 is entirely formed of composite reinforced metal, and the exposed surface of the bottom portion 32 becomes a contact surface 30.31 where the composite reinforced metal is exposed.

(比較例1) 比較のため、第6図に示すように複合強化金属11aと
非複合金属13aとからなる素材1Aを用い、熱間後方
押出成形により加工し第7図に示すバルブリフター3A
を形成した。このバルブリフター3Aは、バルブステム
6との当り面31aが複合強化金属で形成され強度及び
耐摩性を向上させている反面、シム5との当り面30a
の一部が非複合金属で形成され、この部分の耐摩耗性が
低く、かつその強度が十分なものとなっていない。
(Comparative Example 1) For comparison, a valve lifter 3A as shown in FIG. 7 was fabricated by hot backward extrusion using a material 1A consisting of a composite reinforcing metal 11a and a non-composite metal 13a as shown in FIG.
was formed. In this valve lifter 3A, the contact surface 31a with the valve stem 6 is formed of composite reinforced metal to improve strength and wear resistance, while the contact surface 30a with the shim 5
A part of the metal is made of non-composite metal, and this part has low wear resistance and does not have sufficient strength.

(比較例2) 比較のため、第8図に示すように複合強化金属11bと
非複合金属13bとからなる素U1Bを用い、熱間後方
押出成形により加工し第9図に示すバルブリフター3B
を形成した。
(Comparative Example 2) For comparison, a valve lifter 3B as shown in FIG. 9 was fabricated by hot backward extrusion using an element U1B consisting of a composite reinforcing metal 11b and a non-composite metal 13b as shown in FIG.
was formed.

このバルブリフター3Bは、シム5との当り面30bが
複合強化金属で形成され強度及び耐摩性を向上させてい
る反面、バルブステム6との当り面31bが非複合金属
で形成され、バルブステム6が常時接触することにより
摩耗し易くかつ強度的にも十分なものとはいえない。
In this valve lifter 3B, the contact surface 30b with the shim 5 is formed of a composite reinforced metal to improve strength and wear resistance, while the contact surface 31b with the valve stem 6 is formed of a non-composite metal, and the valve stem 6 It is easy to wear out due to constant contact, and it cannot be said that the strength is sufficient.

(評価) 本実施例のバルブリフターの製造方法により製造された
バルブリフターとしての最終製品3は、第4図に示すよ
うに内燃機関の吸気バルブの動弁m構に組込まれて使用
される。このとき最終製品3は、カム4との間に介在す
るシム5に対し、前記複合強化金属で形成された部分が
当り面30として当接し、またバルブステム6の先端6
0に対し、前記複合強化金属で形成された部分が当り面
31として当接するものとなる。このため本実施例の製
造方法によって製造されたバルブリフタ−3は、使用耐
久時間を伸ばすことができる。すなわち、シム5と当接
する当り而30及びバルブステム6の先端60と当接す
る当り面31で耐摩耗性が向上するとともに強度をも向
上されるので、その使用寿命を伸すことができる。さら
に前記複合金属に使用される補強用短繊維を部分的に使
用することにより、その使用量を抑えることが可能とな
り全体のコストを低減することが可能である。
(Evaluation) The final product 3 as a valve lifter manufactured by the valve lifter manufacturing method of this example is used by being incorporated into a valve mechanism of an intake valve of an internal combustion engine, as shown in FIG. At this time, in the final product 3, the portion formed of the composite reinforced metal contacts the shim 5 interposed between the cam 4 and the shim 5 as a contact surface 30, and the tip 6 of the valve stem 6
0, the portion formed of the composite reinforced metal comes into contact as a contact surface 31. Therefore, the valve lifter 3 manufactured by the manufacturing method of this embodiment can extend its service life. That is, the wear resistance and strength of the abutment 30 that abuts the shim 5 and the abutment surface 31 that abuts the tip 60 of the valve stem 6 are improved, so that their service life can be extended. Furthermore, by partially using the reinforcing short fibers used in the composite metal, it is possible to suppress the amount of reinforcing fibers used, and it is possible to reduce the overall cost.

また、補強用短繊維の比重は一般的にアルミニウム合金
等よりは大きいため、部分使用により、層の軽量化が可
能である。
Furthermore, since the specific gravity of reinforcing short fibers is generally higher than that of aluminum alloys, it is possible to reduce the weight of the layer by partially using the reinforcing short fibers.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図〜第3図は、本実施例のバルブリフタの製造方法
に関する説明図である。第1図は索材1を示す縦断面図
、第2図は中間製品を示す縦断面図、第3図は最終製品
を示す縦断面図、第4図は本実施例のバルブリフターの
製造方法によって得られた最終製品を内燃機関の吸気系
統の動弁機構に組込み使用した使用例を示す縦断面図で
ある。 第5図は素材の円形部の外径寸法d1と中間製品の底部
の外表面側の外径寸法d2との関係を示す実験結果であ
る。第6図は比較例1の素材を示す縦断面図、第7図は
第6図に示す素材によって得られた最終製品の縦断面図
、第8図は比較例2の素材を示す縦断面図、第9図は、
第8図の素材を用いて形成された最終製品を示す縦断面
図、第10図は従来の製造方法によって1qられたバル
ブリフターの最終製品を内燃機関の吸気系統の動弁機構
に組込み使用した例を示す縦断面図である。 1・・・素材      10・・・円形部11・・・
母材     12・・・補強材料13・・・環状部 
   2・・・中間製品20・・・一端       
   21 ・・・イ也端22・・・底部     2
3・・・肉厚筒部3・・・最終製品(バルブリフター) 30・・・シムとの当り面 31・・・ステムとの当り面 32・・・シムとの当り面 dl・・・素材の円形部の外径寸法 d2・・・中間製品の円形部の外径用法d3・・・最終
製品の外径寸法
FIGS. 1 to 3 are explanatory views regarding the method of manufacturing the valve lifter of this embodiment. Fig. 1 is a longitudinal cross-sectional view showing the cable material 1, Fig. 2 is a longitudinal cross-sectional view showing the intermediate product, Fig. 3 is a longitudinal cross-sectional view showing the final product, and Fig. 4 is the manufacturing method of the valve lifter of this embodiment. FIG. 3 is a longitudinal sectional view showing an example of use in which the final product obtained by the method is incorporated into a valve mechanism of an intake system of an internal combustion engine. FIG. 5 shows experimental results showing the relationship between the outer diameter dimension d1 of the circular portion of the material and the outer diameter dimension d2 of the bottom outer surface side of the intermediate product. Fig. 6 is a longitudinal cross-sectional view showing the material of Comparative Example 1, Fig. 7 is a longitudinal cross-sectional view of the final product obtained from the material shown in Fig. 6, and Fig. 8 is a longitudinal cross-sectional view showing the material of Comparative Example 2. , Figure 9 is
Fig. 8 is a vertical cross-sectional view showing the final product formed using the material shown in Fig. 10, and Fig. 10 shows the final product of the valve lifter produced by the conventional manufacturing method, which is used by incorporating it into the valve mechanism of the intake system of an internal combustion engine. It is a longitudinal cross-sectional view showing an example. 1...Material 10...Circular part 11...
Base material 12... Reinforcement material 13... Annular part
2...Intermediate product 20...One end
21 . . . end 22 . . . bottom 2
3...Thick walled cylinder part 3...Final product (valve lifter) 30...Shim contact surface 31...Stem contact surface 32...Shim contact surface dl...Material Outer diameter dimension of the circular part d2... Outer diameter dimension of the circular part of the intermediate product Usage d3... Outer diameter dimension of the final product

Claims (1)

【特許請求の範囲】[Claims] (1)複合強化金属で形成された円形部と該円形部の外
周に一体的に非複合金属で形成された環状部とからなる
全体が厚板円形状の素材を、熱間後方押出し成形により
一端が開口され他端が閉じた深さが浅いカップ状の底部
と肉厚筒部とからなる中間製品を形成する第1工程と、 該第1工程により形成された該中間製品の主として該肉
厚筒部を絞り加工あるいは絞りしごき加工により軸心線
方向に伸長させ底が深いカップ形状の最終製品を形成す
る第2工程とからなり、該素材の該円形部の外径寸法≧
該最終製品の外径寸法の関係にあることを特徴とするバ
ルブリフターの製造方法。
(1) A material having a thick circular shape as a whole, consisting of a circular part made of a composite reinforcing metal and an annular part integrally formed with a non-composite metal on the outer periphery of the circular part, is formed by hot backward extrusion molding. a first step of forming an intermediate product consisting of a shallow cup-shaped bottom with one end open and the other end closed and a thick-walled cylindrical portion; a second step of elongating the thick cylindrical portion in the axial direction by drawing or drawing or ironing to form a cup-shaped final product with a deep bottom, and the outer diameter of the circular portion of the material ≧
A method for manufacturing a valve lifter, characterized in that the outer diameter dimensions of the final product are related.
JP2944789A 1989-02-08 1989-02-08 Production of valve lifter Pending JPH02207939A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2944789A JPH02207939A (en) 1989-02-08 1989-02-08 Production of valve lifter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2944789A JPH02207939A (en) 1989-02-08 1989-02-08 Production of valve lifter

Publications (1)

Publication Number Publication Date
JPH02207939A true JPH02207939A (en) 1990-08-17

Family

ID=12276373

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2944789A Pending JPH02207939A (en) 1989-02-08 1989-02-08 Production of valve lifter

Country Status (1)

Country Link
JP (1) JPH02207939A (en)

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