JPS62271911A - Manufacture of cam shaft - Google Patents
Manufacture of cam shaftInfo
- Publication number
- JPS62271911A JPS62271911A JP11663586A JP11663586A JPS62271911A JP S62271911 A JPS62271911 A JP S62271911A JP 11663586 A JP11663586 A JP 11663586A JP 11663586 A JP11663586 A JP 11663586A JP S62271911 A JPS62271911 A JP S62271911A
- Authority
- JP
- Japan
- Prior art keywords
- oil hole
- shaft member
- component
- camshaft
- steel pipe
- 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
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000005245 sintering Methods 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims description 4
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 18
- 230000000694 effects Effects 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
- F01M11/02—Arrangements of lubricant conduits
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Gears, Cams (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
［産業上の利用分野］
本発明は内燃機関用のカムシャフトの製造方法に関し、
特に組み立て式のカムシャフトにおいて油孔を形成する
方法に関する。[Detailed Description of the Invention] 3. Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method of manufacturing a camshaft for an internal combustion engine,
In particular, the present invention relates to a method of forming oil holes in an assembled camshaft.
［従来の技術とその問題点］
焼結材料からなるカムロブ等の構成部品を鋼パイプ製の
軸部材に接合するカムシャフトにおいては、第３図に示
すように焼結接合した後の構成部品１０が高硬度になる
か、あるいは構成部品１０が高硬度でなくとも、接合部
において焼結材料からＣ，Ｎｉ、 Ｃｒ、 Ｎｏ等の元
素が鋼パイプ１２へ拡散進入するために鋼パイプ１２の
表面に硬化層１４が形成され、そのため焼結接合後の潤
滑油孔１６の加工は困難であった。[Prior art and its problems] In a camshaft in which a component such as a cam lobe made of a sintered material is joined to a shaft member made of a steel pipe, the component 10 after sintering and joining is shown in FIG. Even if the component 10 does not have high hardness, elements such as C, Ni, Cr, and No diffuse into the steel pipe 12 from the sintered material at the joint, so that the surface of the steel pipe 12 becomes hard. A hardened layer 14 was formed on the surface, and therefore it was difficult to process the lubricating oil holes 16 after sintering and joining.
また、構成部品１０と軸部材１２の両者に予め油孔１６
を加工した後、両者を組み付けることも行われているが
、油孔どうしを一致して貫通させるだめの位置決めが困
難であった。Further, oil holes 16 are provided in both the component part 10 and the shaft member 12 in advance.
It is also possible to assemble the two after machining them, but it has been difficult to position the oil holes so that they coincide and pass through each other.
［問題店を解決するための手段］
上記問題点に鑑みて本発明は、焼結材料からなるカムロ
ブ等の構成部品を鋼パイプ製の軸部材に接合するカムシ
ャフトにおいて潤滑油孔を容易に形成することを目的と
するものでおって、第１の発明は第１図に示すように、
予め油孔１６ａを形成してなる焼結材料のカムシャフト
構成部品１０を鋼パイプ製の軸部材１２に嵌合し、両者
を焼結結合した後、構成部品の前記油孔１６ａと一致す
る位置において軸部材１２に油孔１６ｂを形成すること
からなる。[Means for Solving Problems] In view of the above problems, the present invention provides a method for easily forming lubricating oil holes in a camshaft in which components such as a cam lobe made of a sintered material are joined to a shaft member made of a steel pipe. As shown in FIG. 1, the first invention aims to
After fitting the camshaft component 10 made of a sintered material with an oil hole 16a formed in advance to the shaft member 12 made of steel pipe and sintering the two, the component is placed at a position that coincides with the oil hole 16a. In this step, an oil hole 16b is formed in the shaft member 12.
また第２の発明は第２図に示すように、カムシャフトの
軸端部に適用するもので必って、予め油孔１６ａを形成
してなる焼結材料のカムシャフト構成部品１０を鋼パイ
プ製の軸部材１２の軸端部に嵌合し、両者を焼結結合し
た後、構成部品１０の前記油孔１６ａと一致する位置に
おいて軸部材１２と軸端部品１Ｂに油孔’１６ｂを貫通
して形成することからなる。Further, as shown in FIG. 2, the second invention is applied to the shaft end of a camshaft, and the camshaft component 10 made of a sintered material with an oil hole 16a formed in advance is connected to a steel pipe. After fitting into the shaft end of the shaft member 12 made of aluminum and sintering them together, an oil hole '16b is penetrated through the shaft member 12 and the shaft end part 1B at a position that coincides with the oil hole 16a of the component 10. It consists of forming.
第１、第２の発明共に、予め構成部品１０に形成する油
孔１６ａの径は焼結結合後に軸部材１２または軸部材１
２と軸端部品１８に形成する油孔１６ｂの径よりも大き
くすることが望ましい。In both the first and second inventions, the diameter of the oil hole 16a formed in advance in the component 10 is the same as that in the shaft member 12 or the shaft member 1 after sintering.
2 and the diameter of the oil hole 16b formed in the shaft end part 18.
また第２の発明において、軸部材１２への軸端部品１８
の挿入は、構成部品１０と軸部材１２を焼結結合する前
でも、あるいは焼結結合した後でかつ油孔１６ｂを形成
する前でもよい。Further, in the second invention, the shaft end part 18 to the shaft member 12 is
may be inserted before the component 10 and the shaft member 12 are sintered together, or after they are sintered and joined and before the oil hole 16b is formed.
［発明の効果］
従来においては油孔１６を穿設するための工具が接合部
の硬化層１４に遭遇して、この部分を貫通することが困
難であったが、本発明によれば、 −子め油孔１６ａを
形成した部分は構成部品１０と軸部材１２の接合部とは
ならないため硬化層が形成されず、容易に油孔１６ｂを
穿設することができる。[Effects of the Invention] Conventionally, the tool for drilling the oil hole 16 encountered the hardened layer 14 at the joint, making it difficult to penetrate this portion, but according to the present invention, - Since the portion where the secondary oil hole 16a is formed does not become a joint between the component 10 and the shaft member 12, no hardened layer is formed, and the oil hole 16b can be easily formed.
また予め形成する油孔１６ａの径を後で形成する油孔１
６ｂの径よりも大きくすれば広い面積において高硬度化
することが避けられるので上述の効果が確実に得られる
。Also, the diameter of the oil hole 16a formed in advance is the same as that of the oil hole 1 to be formed later.
If the diameter is larger than that of 6b, high hardness can be avoided over a wide area, and the above-mentioned effect can be reliably obtained.
第１図は第１の本発明を示すカムシャフトの縦断側面図
、第２図は第２の本発明を示すカムシャフト軸端部の縦
断側面図、第３図は従来の方法を示すカムシャフトの縦
断側面図である。
図において、１０は構成部品、１２は軸部材、１４は硬
化層、１６は油孔、１８は軸端部品である。FIG. 1 is a longitudinal sectional side view of a camshaft showing the first invention, FIG. 2 is a longitudinal sectional side view of the camshaft shaft end showing the second invention, and FIG. 3 is a camshaft showing a conventional method. FIG. In the figure, 10 is a component, 12 is a shaft member, 14 is a hardened layer, 16 is an oil hole, and 18 is a shaft end part.
Claims (4)
構成部品を鋼パイプ製の軸部材に嵌合し、両者を焼結結
合した後、構成部品の前記油孔と一致する位置において
軸部材に油孔を形成することからなるカムシャフトの製
造方法。(1) After fitting the camshaft component made of sintered material with oil holes formed in advance to the shaft member made of steel pipe and sintering the two, place the component at a position that corresponds to the oil hole in the component. A method for manufacturing a camshaft comprising forming an oil hole in a shaft member.
品に形成する油孔は前記軸部材に形成する油孔よりも径
が大きいことを特徴とするカムシャフトの製造方法。(2) The method of manufacturing a camshaft according to claim 1, wherein the oil hole formed in the component part has a larger diameter than the oil hole formed in the shaft member.
構成部品を鋼パイプ製の軸部材の軸端部に嵌合し、両者
を焼結結合した後、構成部品の前記油孔と一致する位置
において軸部材と軸端部品に油孔を貫通して形成するこ
とからなるカムシャフトの製造方法。(3) After fitting the camshaft component made of sintered material with oil holes formed in advance to the shaft end of the shaft member made of steel pipe and sintering the two, the oil holes of the component and A method of manufacturing a camshaft, which comprises forming oil holes through a shaft member and a shaft end part at matching positions.
品に形成する油孔は前記軸部材と軸端部品に形成する油
孔よりも径が大きいことを特徴とするカムシャフトの製
造方法。(4) The method of manufacturing a camshaft according to claim 3, wherein the oil hole formed in the component part has a larger diameter than the oil hole formed in the shaft member and the shaft end part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11663586A JPS62271911A (en) | 1986-05-20 | 1986-05-20 | Manufacture of cam shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11663586A JPS62271911A (en) | 1986-05-20 | 1986-05-20 | Manufacture of cam shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62271911A true JPS62271911A (en) | 1987-11-26 |
Family
ID=14692077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11663586A Pending JPS62271911A (en) | 1986-05-20 | 1986-05-20 | Manufacture of cam shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62271911A (en) |
-
1986
- 1986-05-20 JP JP11663586A patent/JPS62271911A/en active Pending
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