JPH0227545B2 - - Google Patents
Info
- Publication number
- JPH0227545B2 JPH0227545B2 JP60090457A JP9045785A JPH0227545B2 JP H0227545 B2 JPH0227545 B2 JP H0227545B2 JP 60090457 A JP60090457 A JP 60090457A JP 9045785 A JP9045785 A JP 9045785A JP H0227545 B2 JPH0227545 B2 JP H0227545B2
- Authority
- JP
- Japan
- Prior art keywords
- protrusion
- shaft body
- notch
- assembled
- cam lobe
- 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.)
- Expired - Lifetime
Links
- 238000005245 sintering Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Gears, Cams (AREA)
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、内燃機関等に用いるカムシヤフトに
関し、特にシヤフトにこれと別体のカムロブ、ジ
ヤーナル等の構成部品を一体に組付けた組立カム
シヤフトに関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a camshaft used in internal combustion engines, etc., and more particularly to an assembled camshaft in which separate components such as cam lobes and journals are integrally assembled to the shaft. .
（従来の技術）
シヤフトの所定位置に、別体のカムロブ、ジヤ
ーナル等の組付部品を正確に位置決めし、焼結し
て一体に形成する組立カムシヤフトがある。この
ような組立シヤフトにおいて、組付部品をシヤフ
トに位置決めする方法としては、シヤフト側と組
付部品の側とに両者が所定の位置関係に取付けら
れるようなピン孔を形成し、両者のピン孔を油孔
付のピンによつて一体に連結するものがある。(Prior Art) There is an assembled camshaft in which assembly parts such as separate cam lobes and journals are accurately positioned at predetermined positions on the shaft and then sintered and formed into one piece. In such an assembly shaft, a method for positioning the assembly parts on the shaft is to form pin holes on the shaft side and the assembly part side so that both are attached in a predetermined positional relationship, and to There is one in which the two are connected together by a pin with an oil hole.
しかしながら、このような位置決め方法では、
位置決め精度には優れるが、ピンとピン孔の嵌合
度合が緩すぎると、ピンが脱落してシヤフトとカ
ムロブ等がずれるおそれがあり、反対にピンとピ
ン孔の嵌合度合がきつすぎると焼結時に組付ける
組付部品が割れて使用に供せなくなるおそれがあ
るという問題がある。従つてシヤフトと組付部品
とに形成するピン孔及びピンは非常に高い組付精
度を必要とし、組立カムシヤフトの製造及び組立
が困難であるという欠点があつた。 However, with this positioning method,
Although positioning accuracy is excellent, if the fit between the pin and pin hole is too loose, the pin may fall off and the shaft and cam lobe may become misaligned.On the other hand, if the fit between the pin and pin hole is too tight, it may cause problems during sintering. There is a problem in that the assembled parts may crack and become unusable. Therefore, the pin holes and pins formed in the shaft and the assembly parts require very high assembly precision, which has the drawback of making it difficult to manufacture and assemble the assembled camshaft.
（発明の目的）
本発明の目的は、上述した欠点を除去し、シヤ
フトと組付部品との位置決め精度を下げることな
く両者を容易かつ確実に位置決めすることがで
き、さらに製造が容易な組立カムシヤフトを提供
することにある。(Object of the Invention) An object of the present invention is to provide an assembled camshaft which eliminates the above-mentioned drawbacks, allows easy and reliable positioning of the shaft and assembly parts without reducing the positioning accuracy of the two, and which is also easy to manufacture. Our goal is to provide the following.
（技術的手段）
本発明は、シヤフト本体にカムロブ、ジヤーナ
ル等の組付部品を一体に組付けて構成される組立
カムシヤフトにおいて、前記シヤフト本体及び組
付部品の一方の部材に突起部が設けられ、他方の
部材には前記突起部と嵌合して両部材の位置決め
を行うための切欠き部と前記突起部を前記切欠き
部に導びくための案内溝とが設けられ、シヤフト
本体と組付部品とをこれらの夫々切欠き部と突起
部とを嵌合することによつて正確に位置決めして
組立ることができることを特徴とする。(Technical Means) The present invention provides an assembled camshaft constructed by integrally assembling assembly parts such as a cam lobe and a journal onto a shaft body, in which a protrusion is provided on one member of the shaft body and the assembly parts. , the other member is provided with a notch for fitting with the protrusion to position both members, and a guide groove for guiding the protrusion to the notch, so that the other member can be assembled with the shaft body. It is characterized in that the attached parts can be accurately positioned and assembled by fitting the respective notches and protrusions.
以下、図面を使用して本発明を詳細に説明す
る。 Hereinafter, the present invention will be explained in detail using the drawings.
（実施例）
第１図は、本発明による組立カムシヤフトの一
例の構成を示す横断面図である。シヤフト本体１
の外周の所定位置にカムロブ２が固定されてい
る。シヤフト本体１とカムロブ２との位置決め
は、シヤフト本体１の所定位置に設けられる切欠
き部３と、この切欠き部３に嵌合するようにカム
ロブ２の内周に形成される突起部４との嵌合によ
る。(Example) FIG. 1 is a cross-sectional view showing the configuration of an example of an assembled camshaft according to the present invention. Shaft body 1
A cam lobe 2 is fixed at a predetermined position on the outer periphery of. The shaft body 1 and the cam lobe 2 are positioned by a notch 3 provided at a predetermined position in the shaft body 1, and a protrusion 4 formed on the inner periphery of the cam lobe 2 to fit into the notch 3. By mating.
第２図ａ及びｂは、第１図のシヤフト本体の平
面図及び横断面図であり、第３図ａ及びｂは第１
図のカムロブの縦断面図及び横断面図である。中
空のシヤフト本体に１の外側に、その軸線方向に
沿う所定の幅を有する案内溝５が形成され、更に
カムロブ２の取付位置で、溝５の片側の壁に溝５
に対して円周方向に延びる所定幅の切欠き部３が
形成されている。一方、シヤフト本体１に取付け
るため中空状に形成されるカムロブ２の内周側
に、切欠き部３と嵌合するための突起部４を半径
方向内側に突出させる。 Figures 2 a and b are a plan view and a cross-sectional view of the shaft body in Figure 1, and Figures 3 a and b are the
FIG. 6 is a vertical cross-sectional view and a cross-sectional view of the cam lobe shown in the figure. A guide groove 5 having a predetermined width along the axial direction is formed on the outside of the hollow shaft body 1, and a groove 5 is formed on one side wall of the groove 5 at the mounting position of the cam lobe 2.
A cutout portion 3 having a predetermined width is formed to extend in the circumferential direction. On the other hand, on the inner peripheral side of a cam lobe 2 formed in a hollow shape for attachment to the shaft body 1, a protrusion 4 for fitting into a notch 3 is made to protrude radially inward.
このような構成の組立カムシヤフトではカムロ
ブ２の突起部４を溝５内に摺動させてシヤフト本
体にカムロブを嵌合し、両者の切欠き部と突起部
とが整合したところでカムロブをシヤフト本体に
対して回動させて切欠き部と突起部とを嵌合す
る。切欠き部と突起部との嵌合は正確であり、一
旦嵌合した後に不意に外れることがない。シヤフ
ト本体とカムロブとの一体結合は、両者の位置決
めの後、焼結することにより行う。 In an assembled camshaft having such a configuration, the protrusion 4 of the cam lobe 2 is slid into the groove 5 to fit the cam lobe into the shaft body, and when the notch and protrusion of both are aligned, the cam lobe is inserted into the shaft body. The notch portion and the protrusion portion are fitted together by rotating the notch portion and the protrusion portion. The fit between the notch and the protrusion is accurate, and once they are fitted, they will not come off unexpectedly. The shaft body and the cam lobe are integrally joined by sintering after positioning them.
尚本発明は上述した実施例に限られることはな
く幾多の変更或いは変形を行なうことができ、例
えば突起部をシヤフト本体に設け切欠き部及び案
内溝を組付部品に設けても良い。突起部の形成
は、プレス機械やポンチによる加工或いは粉末成
形、さらには焼結後のプレス加工によつて行うこ
とができる。又、組付部品に突起部を設ける位置
は、組付部品の内周部であればどの位置であつて
も良い。 It should be noted that the present invention is not limited to the embodiments described above, and can be modified or modified in many ways. For example, a protrusion may be provided on the shaft body, and a notch and a guide groove may be provided on the assembly parts. The protrusions can be formed by processing using a press machine or a punch, by powder molding, or by press processing after sintering. Further, the protrusion may be provided at any position on the inner circumference of the assembled part.
（効果）
以上の説明から明らかなように、本発明による
組立カムシヤフトによれば、シヤフト本体及びカ
ムロブ等の組付部品の一方の部材に突起部を、他
方の部材には突起部を収容するための切欠き部
と、案内溝とを設け、突起部と切欠き部との嵌合
だけで両部材を組付けるよう構成したため、高度
の位置決め精度を維持して簡単かつ確実に両部材
を組立てることができる効果がある。特に１本の
シヤフト本体に多数の組付部品を取付ける際に作
業能率を大巾に向上できる。従つて、組立カムシ
ヤフトの製造が容易に行なえるという利点もあ
る。(Effects) As is clear from the above description, according to the assembled camshaft of the present invention, one member of the shaft body and the assembly parts such as the cam lobe accommodates the protrusion, and the other member accommodates the protrusion. A notch and a guide groove are provided, and both parts are assembled simply by fitting the protrusion and the notch, so both parts can be easily and reliably assembled while maintaining a high degree of positioning accuracy. There is an effect that can be done. In particular, work efficiency can be greatly improved when a large number of assembly parts are attached to one shaft body. Therefore, there is an advantage that the assembled camshaft can be easily manufactured.
第１図は、本発明による組立カムシヤフトの一
例の構成を示す横断面図、第２図ａ，ｂは、第１
図のシヤフト本体を示す側面図および断面図、第
３図ａ，ｂは、第１図の組付部品を示す縦断面図
および横断面図である。
１…シヤフト本体、２…組付部品、３…切欠き
部、４…突起部、５…案内溝。
FIG. 1 is a cross-sectional view showing the configuration of an example of an assembled camshaft according to the present invention, and FIGS.
FIGS. 3A and 3B are a side view and a cross-sectional view of the shaft body shown in FIG. DESCRIPTION OF SYMBOLS 1... Shaft main body, 2... Assembly parts, 3... Notch part, 4... Projection part, 5... Guide groove.
Claims (1)
付部品を一体に組付けて構成される組立カムシヤ
フトにおいて、前記シヤフト本体及び組付部品の
一方の部材に突起部が設けられ、他方の部材には
前記突起部と嵌合して両部材の位置決めを行うた
めの切欠き部と前記突起部を前記切欠き部に導く
ための案内溝とが設けられていることを特徴とす
る組立カムシヤフト。1. In an assembled camshaft configured by integrally assembling assembly parts such as a cam lobe and journal onto a shaft body, one member of the shaft body and the assembly parts is provided with a protrusion, and the other member is provided with the protrusion. 1. An assembly camshaft characterized in that a notch portion is provided to position the two members by fitting the two members, and a guide groove is provided to guide the protrusion portion to the notch portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60090457A JPS61294262A (en) | 1985-04-26 | 1985-04-26 | Builtup cam shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60090457A JPS61294262A (en) | 1985-04-26 | 1985-04-26 | Builtup cam shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61294262A JPS61294262A (en) | 1986-12-25 |
| JPH0227545B2 true JPH0227545B2 (en) | 1990-06-18 |
Family
ID=13999145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60090457A Granted JPS61294262A (en) | 1985-04-26 | 1985-04-26 | Builtup cam shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61294262A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008075520A (en) * | 2006-09-20 | 2008-04-03 | Otics Corp | Camshaft |
| JP5532872B2 (en) * | 2009-12-01 | 2014-06-25 | 株式会社ジェイテクト | Camshaft device |
-
1985
- 1985-04-26 JP JP60090457A patent/JPS61294262A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61294262A (en) | 1986-12-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |