JPS6256388B2 - - Google Patents
Info
- Publication number
- JPS6256388B2 JPS6256388B2 JP333087A JP333087A JPS6256388B2 JP S6256388 B2 JPS6256388 B2 JP S6256388B2 JP 333087 A JP333087 A JP 333087A JP 333087 A JP333087 A JP 333087A JP S6256388 B2 JPS6256388 B2 JP S6256388B2
- Authority
- JP
- Japan
- Prior art keywords
- notch
- steel strip
- ring
- tongue piece
- bent
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 24
- 239000010959 steel Substances 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 210000002105 tongue Anatomy 0.000 description 17
- 238000005452 bending Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Description
【発明の詳細な説明】
この発明はピストンリングの製造法に関し、特
に詳述すれば、ダブルステツプジヨイントタイプ
の合い口部を有する鋼帯より作られたピストンリ
ングの製造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing a piston ring, and more particularly, to a method for manufacturing a piston ring made from a steel strip having a double-step joint type abutment.
ピストンリングの合い口部からのガス漏れを減
少させるため、合い口部を斜めとしたり、段付と
したりする種々の改良が成されており、合い口部
の一端に設けた外周面方向と合い口部方向とに開
放した段部に、他端に設けた舌片を着座させるダ
ブルステツプジヨイントタイプも提案されてい
る。このダブルステツプジヨイントは、シール効
果が優れているが、外周面方向と合い口部方向と
に開放した段部およびこの段部に着座する舌片と
を、従来、鋳造されたリングに対し機械切削加工
により形成させているが、知られている如く、リ
ングの幅は一般に小さいので、これら段部と舌片
の加工が難しく精度が劣り、所望のシール効果が
得られない欠点があり、又、多量生産が難しい。 In order to reduce gas leakage from the abutment of piston rings, various improvements have been made, such as making the abutment diagonal or stepped. A double-step joint type has also been proposed in which a tongue piece provided at the other end is seated on a stepped portion that is open toward the mouth. Although this double step joint has an excellent sealing effect, it is difficult to machine the conventionally cast ring by creating a step that is open in the direction of the outer circumferential surface and in the direction of the abutment, and a tongue piece that sits on this step. They are formed by cutting, but as is known, the width of the ring is generally small, so machining these steps and tongues is difficult and the precision is poor, and the desired sealing effect cannot be obtained. , difficult to mass produce.
それ故、この発明は、鋼帯の端部に予め切欠部
を形成し、該鋼帯を長手方向に折り曲げると共に
リング状になし、リングの合い口端部に段部と舌
片とを形成させ、一方の段部に他方の舌片を着座
させることで、前述した従来技術の欠点を解消さ
せているピストンリングの製造法を提供すること
を目的とする。 Therefore, in this invention, a notch is formed in advance at the end of a steel strip, the steel strip is bent in the longitudinal direction and formed into a ring shape, and a step and a tongue piece are formed at the end of the ring. It is an object of the present invention to provide a method for manufacturing a piston ring that eliminates the drawbacks of the prior art described above by seating the other tongue piece on one stepped portion.
この発明の実施例を添付図面を参照して説明す
る。 Embodiments of the invention will be described with reference to the accompanying drawings.
耐熱性合金からなる鋼帯１の一端に、端壁２お
よび側壁３側に開放する第１の切欠部４を設け
る。第１の切欠部４の辺５は、鋼帯１の中心線６
の手前又は中心線上で終るようにする。鋼帯１の
他端に、端壁２′および側壁３′側に開放する第２
の切欠部７を設ける。第２の切欠部７の辺８は、
鋼帯の中心線６を越えるか或いは中心線上に位置
させる。 A first notch 4 that opens toward the end wall 2 and side wall 3 is provided at one end of the steel strip 1 made of a heat-resistant alloy. The side 5 of the first notch 4 is the center line 6 of the steel strip 1.
It should end in front of or on the center line. At the other end of the steel strip 1, a second opening is provided to the end wall 2' and side wall 3' side.
A notch 7 is provided. The side 8 of the second notch 7 is
It is located beyond the center line 6 of the steel strip or on the center line.
第１及び第２の切欠部４，７を設けた鋼帯１
を、中心線６に沿つて長手方向に折り曲げ重ね合
せ、該折り曲げ部を内周面９とするようリング状
とさせる。鋼帯１の該折り曲げにより第１の切欠
部４が、リング状体の一端に段部１０を作り、
又、第２の切欠部７によりその他端に舌片１１を
作る。 Steel strip 1 provided with first and second notches 4 and 7
are folded in the longitudinal direction along the center line 6 and stacked one on top of the other, forming a ring shape with the folded portion serving as the inner circumferential surface 9. By the bending of the steel strip 1, the first notch 4 creates a step 10 at one end of the ring-shaped body,
Also, a tongue piece 11 is formed at the other end by the second notch part 7.
第３図に示すように、舌片１１を段部１０に着
座させ、舌片１１の端壁を第１の切欠部４の壁に
対向離間させ且つ両端壁２，１２間に隙間１３を
残すようにしてピストンリングとさせる。 As shown in FIG. 3, the tongue piece 11 is seated on the stepped portion 10, the end wall of the tongue piece 11 is spaced apart from the wall of the first notch 4, and a gap 13 is left between the end walls 2 and 12. In this way, form a piston ring.
第４図に示す例は、両切欠部４，７の辺５，８
をほぼ中心線６上に位置させた鋼帯１を折り曲げ
てリング状体とさせた場合の舌片１１と段部１０
との重ね合せ部の断面図である。 In the example shown in FIG. 4, the sides 5 and 8 of both notches 4 and 7 are
Tongue piece 11 and step part 10 when the steel strip 1, which is positioned approximately on the center line 6, is bent to form a ring-shaped body.
FIG.
第５図に示す例は、両切欠部４，７の辺５，８
を中心線６から離れた位置に設けた鋼帯を折り曲
げてリング状とさせた場合の舌片１１と段部１０
との重ね合せ部の断面図である。 In the example shown in FIG. 5, sides 5 and 8 of both notches 4 and 7 are
Tongue piece 11 and step part 10 when a steel strip provided at a position away from the center line 6 is bent to form a ring shape.
FIG.
第６図、第７図及び第８図は、本発明の別の実
施例を示す。 6, 7 and 8 show another embodiment of the invention.
この実施例においては、鋼帯１の端部に形成さ
れる第１の切欠部４は、該鋼帯の中心線６の手前
に位置する辺５′と中心線６を越えた位置に設け
られた辺５″とを有し、他端部に形成される第２
の切欠部７は、前記第１の切欠部とは反対側で且
つ前記第１の切欠部により端部に形成される凸部
１３を収容する形状とする。上記鋼帯１はその中
心線６に沿つて長手方向に折り曲げられ、該折り
曲げ部を内周９とするリング状とされる。 In this embodiment, the first notch 4 formed at the end of the steel strip 1 is provided at a position beyond the center line 6 and a side 5' located in front of the center line 6 of the steel strip. and a second side formed at the other end.
The notch 7 has a shape that accommodates a convex portion 13 formed on the opposite side from the first notch and at an end thereof by the first notch. The steel strip 1 is bent in the longitudinal direction along its center line 6 to form a ring shape with the bent portion serving as an inner periphery 9.
鋼帯１の折り曲げによりリングの一方の合い口
端部に第１の切欠部４が段部１０′と舌片１１′と
を形成し、リングの他方の合い口端部には、第２
の切欠部７が舌片１１″と段部１０″とを形成する
（第７図参照）。 By bending the steel strip 1, a first notch 4 forms a step 10' and a tongue piece 11' at one end of the ring, and a second notch 4 is formed at the other end of the ring.
The notch 7 forms a tongue 11'' and a step 10'' (see FIG. 7).
第８図に示すように、舌片１１′を段部１０″
に、また舌片１１″を段部１０′に着座させピスト
ンリングの合い口とする。 As shown in FIG. 8, the tongue piece 11' is
In addition, the tongue piece 11'' is seated on the stepped portion 10' to serve as an abutment for the piston ring.
以上から明らかなように、この発明では鋼帯の
両端に切欠部を設けて、この鋼帯を折り曲げて重
ね合せリング状体とさせ、両切欠部により形成さ
れる段部と舌片とを合せているので、幅寸法の小
さなピストンリングに、ダブルステツプジヨイン
トタイプの合い口を、精度高く容易に設けること
ができ、従来の如き、段部および舌片を作る切削
加工が不要となる。 As is clear from the above, in the present invention, notches are provided at both ends of the steel strip, the steel strip is bent to form an overlapping ring-shaped body, and the step formed by both the notches and the tongue piece are aligned. Therefore, a double step joint type abutment can be easily and accurately provided on a piston ring having a small width dimension, and the conventional cutting process to create a step and a tongue piece is not required.
第１図は鋼帯の端部の切欠部を示す部分平面
図、第２図は鋼帯を折り曲げリング状とさせた時
の鋼帯の両端の部分斜視図、第３図はこの発明に
よるピストンリングの合い口部の部分斜視図、第
４図は別の例の合い口部の断面図、第５図は第３
図に示す例の合い口部の断面図、第６図は別の例
の鋼帯の部分平面図、第７図は第６図に示す鋼帯
の折り曲げ成形合の状態を示す部分斜視図、およ
び第８図は第７図に示す例の合い口部の状態を示
す部分斜視図である。
図中：１……鋼帯、４，７……切欠部、９……
内周面、１０……段部、１１……舌片。
Fig. 1 is a partial plan view showing a notch at the end of the steel strip, Fig. 2 is a partial perspective view of both ends of the steel strip when the steel strip is bent into a ring shape, and Fig. 3 is a piston according to the present invention. A partial perspective view of the abutment of the ring, FIG. 4 is a sectional view of another example of the abutment, and FIG.
6 is a partial plan view of another example of the steel strip; FIG. 7 is a partial perspective view showing the state of the steel strip shown in FIG. 6 in a state of bending and forming; and FIG. 8 is a partial perspective view showing the state of the abutment portion of the example shown in FIG. 7. In the diagram: 1... Steel strip, 4, 7... Notch, 9...
Inner peripheral surface, 10... step, 11... tongue piece.
Claims (1)
第１の切欠部を設け、他端部に、その端壁側及び
前記第１の切欠部の位置する側とは反対側の側壁
側に開放する第２の切欠部を設けた鋼帯を、その
中心軸に沿つて長手方向に折り曲げ該折り曲げ部
を内周とするリング状をなし、前記第１の切欠部
により端部に形成される段部又は（及び）舌片と
前記第２の切欠部により端部に形成される舌片又
は（及び）段部とを重ね合せ合い口部とさせてい
ることを特徴とするピストンリングの製造法。1 A first notch that opens to the end wall side and the side wall side is provided at one end, and a side wall opposite to the end wall side and the side where the first notch is located at the other end. A steel strip provided with a second notch that opens to the side is bent in the longitudinal direction along its central axis to form a ring shape with the bent part as the inner periphery, and the first notch is formed at the end. A piston ring characterized in that a step or (and) a tongue formed at the end thereof and a tongue or (and) a step formed at the end by the second notch are overlapped to form a mouth. manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP333087A JPS62167976A (en) | 1987-01-12 | 1987-01-12 | Manufacture of piston ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP333087A JPS62167976A (en) | 1987-01-12 | 1987-01-12 | Manufacture of piston ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62167976A JPS62167976A (en) | 1987-07-24 |
| JPS6256388B2 true JPS6256388B2 (en) | 1987-11-25 |
Family
ID=11554341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP333087A Granted JPS62167976A (en) | 1987-01-12 | 1987-01-12 | Manufacture of piston ring |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62167976A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0755307Y2 (en) * | 1987-10-05 | 1995-12-20 | 日産自動車株式会社 | Pistons and piston ring devices for internal combustion engines |
| JP6368098B2 (en) * | 2014-02-03 | 2018-08-01 | 株式会社リケン | piston ring |
| DE102017100173A1 (en) * | 2017-01-05 | 2018-07-05 | Federal-Mogul Burscheid Gmbh | Piston ring with stepped tread |
-
1987
- 1987-01-12 JP JP333087A patent/JPS62167976A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62167976A (en) | 1987-07-24 |
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