JPH0356285B2 - - Google Patents
Info
- Publication number
- JPH0356285B2 JPH0356285B2 JP17702283A JP17702283A JPH0356285B2 JP H0356285 B2 JPH0356285 B2 JP H0356285B2 JP 17702283 A JP17702283 A JP 17702283A JP 17702283 A JP17702283 A JP 17702283A JP H0356285 B2 JPH0356285 B2 JP H0356285B2
- Authority
- JP
- Japan
- Prior art keywords
- retaining ring
- journal
- positioning
- journals
- camshaft
- 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
Links
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 239000007791 liquid phase Substances 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Powder Metallurgy (AREA)
Description
【発明の詳細な説明】
本発明は、止め輪を介してカムロブおよびジヤ
ーナルをシヤフトの所要個所にセツトせしめた
後、液相焼結により固定せしむる組立カムシヤフ
トの製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing an assembled camshaft, in which a cam lobe and a journal are set at desired locations on a shaft via a retaining ring, and then fixed by liquid phase sintering.
鋼管製のカムシヤフト２に別途製作したカムロ
ブ４、ジヤーナル３等を貫通する貫通孔５，５…
を形成し、該貫通孔５，５…にピン（図示せず）
を介して組付部品を固定させた後、液晶焼結して
組立カムシヤフト１を製造する事は公知である。 Through holes 5, 5, which pass through the cam lobe 4, journal 3, etc. separately manufactured in the camshaft 2 made of steel pipes...
and pins (not shown) are formed in the through holes 5, 5...
It is known to manufacture the assembled camshaft 1 by fixing the assembled parts through a liquid crystal and then sintering the liquid crystal.
この時液相焼結前にカムシヤフト１と組付部品
の位置決めを充分に行なわないと、カム、ジヤー
ナルの位置が製造時にずれてしまい、使用に供せ
ないと言う問題点がある他にピンの装着が不安定
で脱落することもあり危険である。 At this time, if the camshaft 1 and the assembled parts are not properly positioned before liquid phase sintering, the position of the cam and journal will shift during manufacturing, which will cause the problem that the pin cannot be used. It is dangerous to wear it because it is unstable and may fall off.
それ故、従来よりカム、ジヤーナルの位置決め
および固定手段の工夫が色々となされてきた。 Therefore, various improvements have been made to the positioning and fixing means of cams and journals.
その中には、カシメ、ピン止めなどがあるが、
いずれも精度および製造工程から、あるいは量産
性の面からも充分ではなかつた。 These include caulking, pinning, etc.
None of them were sufficient in terms of accuracy, manufacturing process, or mass productivity.
本発明の技術的課題は組立精度にすぐれ、製造
も比較的容易で、量産性のある組立カムシヤフト
の製造方法を提供することにある。 A technical problem of the present invention is to provide a method for manufacturing an assembled camshaft that has excellent assembly accuracy, is relatively easy to manufacture, and is mass-producible.
上記技術的課題を解決するための本発明の構成
すなわち技術的手段は次の通りである。 The structure of the present invention, that is, the technical means for solving the above technical problem is as follows.
シヤフトの所要個所にカムロブおよびジヤーナ
ルの位置決め用溝を設け、これら位置決め用溝の
一方に止め輪を嵌め込むことによつて組込まれる
前記カムロブおよびジヤーナルを定着せしめ、し
かる後もう片方の位置決め用溝に止め輪を嵌め込
んでセツトし、しかるのち、液相焼結により前記
組立カムシヤフトにカムロブおよびジヤーナルを
固定せしめてなる組立カムシヤフトの製造方法に
ある。 Grooves for positioning the cam lobes and journals are provided at required locations on the shaft, and the cam lobes and journals are fixed by fitting a retaining ring into one of these positioning grooves, and then into the other positioning groove. The method of manufacturing an assembled camshaft comprises fitting and setting a retaining ring, and then fixing a cam lobe and a journal to the assembled camshaft by liquid phase sintering.
上記技術的手段により、止め輪を軸方向あるい
は直径方向により容易に押し込むことができるの
で、量産に適するとともに押し込まれた止め輪の
脱落が防止される。 The above technical means allows the retaining ring to be pushed in more easily in the axial or diametrical direction, making it suitable for mass production and preventing the pressed retaining ring from falling off.
又、該止め輪がカムロブおよびジヤーナルに接
する面積が大きいので、位置ずれが防止される。 Furthermore, since the retaining ring has a large area in contact with the cam lobe and the journal, positional displacement is prevented.
特に直径方向に押し込むことができるので、自
動組立にすぐれた機能を発揮する。 In particular, since it can be pushed in in the diametrical direction, it exhibits excellent functionality for automatic assembly.
なお、カムロブ、ジヤーナルにも止め輪と嵌合
する様に溝を設けてもよい。 Incidentally, the cam lobe and journal may also be provided with grooves so as to fit with the retaining ring.
以下第３図および第４図に基いて本発明方法の
一実施例を説明する。 An embodiment of the method of the present invention will be described below with reference to FIGS. 3 and 4.
１０は本発明方法にて製造した組立カムシヤフ
トの全体を示す。 10 shows the entire assembled camshaft manufactured by the method of the present invention.
１２はスチールパイプのシヤフトで、該シヤフ
ト１２の外周に円周方向に沿つて位置決め用溝１
７，１７…を形成する。 Reference numeral 12 denotes a steel pipe shaft, and a positioning groove 1 is provided along the circumferential direction on the outer periphery of the shaft 12.
7, 17... are formed.
該位置決め用溝１７，１７…の幅は止め輪１６
の厚みに相当し、その深さは組立カムシヤフトの
機能をそこなわない範囲内とする。 The width of the positioning grooves 17, 17... is the same as the retaining ring 16.
The depth shall be within a range that does not impair the function of the assembled camshaft.
該位置決め用溝１７，１７…は焼結合金にて別
途製作したカムロブ１４の厚みｔおよび同じく別
途製作したジヤーナル１３の厚みＴに相当する間
隔をおいて形成する。 The positioning grooves 17, 17, . . . are formed at intervals corresponding to the thickness t of the cam lobe 14 separately manufactured from sintered metal and the thickness T of the journal 13 also separately manufactured.
次にシヤフト１２の位置決め用溝１７，１７…
の一方に止め輪１６，１６…を順次嵌め込みし、
しかるのち、これら止め輪１６，１６…の側面に
接するように前記カムロブ１４，１４…およびジ
ヤーナル１３，１３…を組込む。 Next, the positioning grooves 17, 17 of the shaft 12...
Sequentially fit the retaining rings 16, 16... into one of the
Thereafter, the cam lobes 14, 14... and the journals 13, 13... are assembled so as to be in contact with the side surfaces of these retaining rings 16, 16....
次に、これらカムロブ１４，１４…およびジヤ
ーナル１３，１３…の側面に接するように止め輪
１６，１６…を片方の位置決め用溝に嵌め込んで
セツトする。 Next, the retaining rings 16, 16, . . . are fitted into one of the positioning grooves so as to be in contact with the side surfaces of the cam lobes 14, 14, . . . and the journals 13, 13, .
しかるのち、液相焼結により前記カムロブ１
４，１４…およびジヤーナル１３，１３…は縮小
し、シヤフト１２の外周に固定する。 After that, the cam lobe 1 is formed by liquid phase sintering.
4, 14... and journals 13, 13... are reduced and fixed to the outer periphery of the shaft 12.
本発明方法により製造した組立カムシヤフトは
シヤフトの外周に円周方向に沿つて位置決め用溝
を形成し、止め輪を嵌め込むので、カムロブおよ
びジヤーナルを所定位置に確実に取付けることが
でき、かつ左右の止め輪にてカムロブあるいはジ
ヤーナルが挾持された状態で保持されるので、脱
落する危険性が解消された。 The assembled camshaft manufactured by the method of the present invention has a positioning groove formed along the circumferential direction on the outer periphery of the shaft, and a retaining ring is fitted into the shaft. Since the cam lobe or journal is held in place by the retaining ring, the risk of it falling off is eliminated.
第１図は従来のカムシヤフトの部分断面図、第
２図は第１図Ａ−Ａ線縦断面正面図、第３図は本
発明方法による組立カムシヤフトの部分断面図、
第４図は第３図Ｂ−Ｂ線縦断正面図である。
１２：シヤフト、１３：ジヤーナル、１４：カ
ムロブ、１６：止め輪、１７：位置決め用溝、１
８：止め輪の合口。
FIG. 1 is a partial cross-sectional view of a conventional camshaft, FIG. 2 is a vertical cross-sectional front view taken along the line A-A in FIG. 1, and FIG. 3 is a partial cross-sectional view of a camshaft assembled by the method of the present invention.
FIG. 4 is a vertical sectional front view taken along the line B--B in FIG. 3. 12: Shaft, 13: Journal, 14: Cam lobe, 16: Retaining ring, 17: Positioning groove, 1
8: Retaining ring abutment.
Claims (1)
ナルの位置決め用溝を設け、これら位置決め用溝
の一方に止め輪を嵌め込むことによつて組込まれ
る前記カムロブおよびジヤーナルを定着せしめ、
しかる後もう片方の位置決め用溝に止め輪を嵌め
込んでセツトし、しかるのち、液相焼結により前
記組立カムシヤフトにカムロブおよびジヤーナル
を固定せしむることを特徴とする組立カムシヤフ
トの製造方法。1. Providing grooves for positioning the cam lobes and journals at required locations on the shaft, and fixing the cam lobes and journals to be incorporated by fitting a retaining ring into one of these positioning grooves;
A method for manufacturing an assembled camshaft, which comprises: thereafter fitting and setting a retaining ring into the other positioning groove, and then fixing the cam lobe and journal to the assembled camshaft by liquid phase sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17702283A JPS6070103A (en) | 1983-09-27 | 1983-09-27 | Production of assembled cam shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17702283A JPS6070103A (en) | 1983-09-27 | 1983-09-27 | Production of assembled cam shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6070103A JPS6070103A (en) | 1985-04-20 |
| JPH0356285B2 true JPH0356285B2 (en) | 1991-08-27 |
Family
ID=16023782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17702283A Granted JPS6070103A (en) | 1983-09-27 | 1983-09-27 | Production of assembled cam shaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6070103A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6167525A (en) * | 1984-09-11 | 1986-04-07 | Nippon Piston Ring Co Ltd | Cam shaft |
| GB2277361B (en) * | 1993-04-21 | 1995-11-08 | T & N Technology Ltd | Manufacture of camshafts |
| US5437097A (en) * | 1993-06-01 | 1995-08-01 | Matsumoto Heavy Industry Co. Ltd. | Method and apparatus for manufacturing a cam shaft |
| WO2007077880A1 (en) * | 2005-12-28 | 2007-07-12 | Nippon Piston Ring Co., Ltd. | Method for manufacturing shaft member connected to a sintered part and internal combustion engine cam shaft |
-
1983
- 1983-09-27 JP JP17702283A patent/JPS6070103A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6070103A (en) | 1985-04-20 |
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