JPH03177659A - Manufacture of composite piston pin - Google Patents
Manufacture of composite piston pinInfo
- Publication number
- JPH03177659A JPH03177659A JP31431689A JP31431689A JPH03177659A JP H03177659 A JPH03177659 A JP H03177659A JP 31431689 A JP31431689 A JP 31431689A JP 31431689 A JP31431689 A JP 31431689A JP H03177659 A JPH03177659 A JP H03177659A
- Authority
- JP
- Japan
- Prior art keywords
- fins
- piston pin
- composite piston
- manufacturing
- circular tube
- 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 abstract description 21
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 239000002990 reinforced plastic Substances 0.000 claims description 5
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 230000003014 reinforcing effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 5
- 229920002430 Fibre-reinforced plastic Polymers 0.000 abstract description 4
- 239000011151 fibre-reinforced plastic Substances 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 abstract description 3
- 239000010959 steel Substances 0.000 abstract description 3
- 238000001746 injection moulding Methods 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 238000010791 quenching Methods 0.000 abstract 2
- 230000000171 quenching effect Effects 0.000 abstract 2
- 238000010586 diagram Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/06—Making machine elements axles or shafts
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、複合軽量化ピストンピンの製造方法に関する
。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method of manufacturing a composite lightweight piston pin.
従来の金属単体型のピストンピンは、丸鋼からすべて削
り出しで製造されており、工程数が多く、材料歩留り率
も低いという問題があった。Conventional single-metal piston pins are manufactured entirely by machining from round steel, which has the problem of a large number of manufacturing steps and a low material yield rate.
本発明は、上記の問題点を解決するためなされたもので
あり、その目的とするところは、工程数が少なく、材料
歩留り率も良好ないわゆるニャーネットシエイプで複合
ピストンピンを製造し得る方法を提供することにある。The present invention was made to solve the above problems, and its purpose is to provide a method for manufacturing a composite piston pin using a so-called meow net shape, which requires a small number of steps and has a good material yield rate. It is about providing.
上記の目的は、
少なくとも一方の円筒面に軸方向に延びるフィンを有す
る円管を押出し成形する工程と、上記フィン付円管を所
望の長さに切断する工程と、
切断して得た短管の両端近傍のフィンを切除する工程と
、
上記工程で仕上げられた短管に焼入れする工程と、
焼入れした上記短管のフィンが設けられた円筒面に沿っ
て、強化プラスチック層又は繊維強化プラスチック層を
形成する工程と、
から戒る複合ピストンピンの製造方法によって達成し得
る。The above objects are: a step of extruding a circular tube having fins extending in the axial direction on at least one cylindrical surface; a step of cutting the finned circular tube to a desired length; and a short tube obtained by cutting. A step of cutting off the fins near both ends of the tube, A step of hardening the short tube finished in the above step, A reinforced plastic layer or a fiber reinforced plastic layer along the cylindrical surface of the hardened short tube where the fins are provided. This can be achieved by a process for forming a composite piston pin, and a method for manufacturing a composite piston pin.
なお、上記フィンは円管の内面に設けてもよいし、逆に
外面に設けるようにしてもよい。Note that the fins may be provided on the inner surface of the circular tube, or conversely, may be provided on the outer surface.
また、円管とプラスチック層の接着結合性を向上させる
と共に、ピストンピン自体の剛性及び耐屈曲性を向上さ
せるために、フィンを円管の内面に設けた場合には、互
いに隣接するフィンの間の溝の幅が半径方向内側へ向か
って狭くなるように形成し、逆に、フィンを円管の外面
に設けた場合には、互いに隣接するフィンの間の溝の幅
が半径方向外側へ向かって狭くなるように形威すること
が推奨される。In addition, in order to improve the adhesive bond between the circular tube and the plastic layer, as well as to improve the rigidity and bending resistance of the piston pin itself, when fins are provided on the inner surface of the circular tube, it is necessary to If the fins are provided on the outer surface of the circular tube, the width of the grooves between adjacent fins will decrease radially outward. It is recommended that the shape be made narrower.
上記の如き構成であれば、押出し成形した円管を所望の
長さに切断し、その両端近傍のフィンを切除するだけで
ピストンピンの主要部が作製されるから、その材料歩留
り率は従来の如く全体を削り出す場合に比べて格段に向
上し、工程数も低減するものである。With the above configuration, the main part of the piston pin can be manufactured by simply cutting the extruded circular tube to the desired length and cutting off the fins near both ends, so the material yield rate is lower than that of the conventional one. Compared to the case where the entire structure is cut out, the improvement is much improved and the number of steps is also reduced.
以下、図面を参照しつ＼本発明の構成を具体的に説明す
る。Hereinafter, the configuration of the present invention will be specifically explained with reference to the drawings.
第１図ないし第４図は本発明にか翫る製造方法により複
合ピストンピンを作製する状態を段階的に示す説明図、
第５図は本発明にか＼る製造方法により製造される複合
ピストンピンのもう一つの形態のものを示す説明図、第
６図及び第７図は本発明にか＼る製造方法により製造さ
れる複合ピストンピンのそれぞれ異なった望ましい形態
のものを示す説明図である。1 to 4 are explanatory diagrams showing step-by-step the state of manufacturing a composite piston pin by the manufacturing method according to the present invention,
FIG. 5 is an explanatory diagram showing another form of the composite piston pin manufactured by the manufacturing method according to the present invention, and FIGS. FIG. 3 is an explanatory view showing different desirable forms of the composite piston pin.
本発明においては、まず素材となる鋼を押出し成形する
ことにより、第１図に示すような長尺の円管ｌを作製す
る。その際、円管ｌの内面には軸方向に延びる複数のフ
ィンＩａ、 Ｉａを同時に形成する。In the present invention, first, a long circular tube l as shown in FIG. 1 is manufactured by extruding steel as a raw material. At this time, a plurality of axially extending fins Ia, Ia are simultaneously formed on the inner surface of the circular tube l.
次いで、このような長尺の円管ｌを、製造すべきピスト
ンピンの長さに合わせて切断し、第２図に示すような短
管ｌを製造し、更に第３図に示すように短管ｌの両端近
傍のフィンを切断する。Next, such a long circular tube 1 is cut to match the length of the piston pin to be manufactured to produce a short tube 1 as shown in FIG. 2, and then a short tube 1 as shown in FIG. Cut the fins near both ends of the tube l.
黙るのち、短管ｌに対し浸炭焼入れ、高周波焼入れ等の
焼入れ処理を施し、更に、射出成形法若しくはコンプレ
ッション法等により第４図に示すように短管ｌの内壁面
に沿って全体的に強化プラスチック層又は繊維強化プラ
スチック層２を形成し、短管ｌを強化する。そして最後
に外径を研削して完成品を得る。After that, the short pipe l is subjected to hardening treatment such as carburizing and hardening, induction hardening, etc., and is further strengthened as a whole along the inner wall surface of the short pipe l by injection molding or compression method, etc. as shown in Fig. 4. A plastic layer or fiber-reinforced plastic layer 2 is formed to strengthen the short pipe 1. Finally, the outer diameter is ground to obtain the finished product.
これにより、ピストンピンとしての強度と剛性を保ちな
がら、ピストンに取り付けたときに往復質量の少ない軽
いピストンピンを製造することができる。As a result, it is possible to manufacture a light piston pin that has less reciprocating mass when attached to a piston while maintaining the strength and rigidity of the piston pin.
なお、円管１の軸方向に延びるフィンｌａ、 ｌａは、
図示した実施例においては軸に平行に形成されているが
、軸方向に沿ってスパイラルに形成されたフィンでもよ
い。Note that the fins la and la extending in the axial direction of the circular tube 1 are as follows:
In the illustrated embodiment, the fins are formed parallel to the axis, but the fins may be formed spirally along the axial direction.
而して、上記実施例においては、円管ｌの内面にフィン
ｌａ、ｌａを形成し、これを覆うよう円管の内面に強化
プラスチック層２を設けたが、第５図に示すように、円
管ｌの外面にフィンｌｂ、ｌｂを形威し、これを覆うよ
う円管の外面に強化プラスチック層３を設けるようにし
てもよい。In the above embodiment, the fins la and la were formed on the inner surface of the circular tube l, and the reinforced plastic layer 2 was provided on the inner surface of the circular tube to cover the fins la, but as shown in FIG. Fins lb, lb may be formed on the outer surface of the circular tube 1, and a reinforced plastic layer 3 may be provided on the outer surface of the circular tube so as to cover them.
更にまた、ピストンピンの剛性及び耐屈曲性を向上させ
、強化プラスチック層との接着結合性を良好ならしめる
ため、フィンの先端側の幅を付け根側の幅よりも大きく
することが推奨される。即ち、円管ｌの内面にフィンｌ
ａ、 ｌａを形成した場合には、第６図に示すように、
互いに隣接する上記フィンｌａ、 ｌａの間の溝の幅が
半径方向内側へ向かって狭くなるように形成し、また、
円管１の外面にフィン１ｂ、ｌｂを形成した場合には、
第７図に示すように、互いに隣接する上記フィンｌｂ、
ｌｂの間の溝の幅が半径方向外側へ向かって狭くなる
ように形成することが推奨される。Furthermore, in order to improve the rigidity and bending resistance of the piston pin and to provide good adhesive bonding with the reinforced plastic layer, it is recommended that the width at the tip side of the fin be larger than the width at the base side. That is, fins l are formed on the inner surface of the circular tube l.
When a and la are formed, as shown in Figure 6,
The width of the groove between the adjacent fins la, la is formed so as to become narrower toward the inside in the radial direction, and
When the fins 1b and lb are formed on the outer surface of the circular tube 1,
As shown in FIG. 7, the fins lb adjacent to each other,
It is recommended that the width of the groove between lb becomes narrower toward the outside in the radial direction.
本発明は叙上の如く構成されるから、本発明によるとき
は、少ない工程数でニャーネットシエイプによる材料歩
留り率の高い複合ピストンピンを少ない工程数で製造し
得るものである。Since the present invention is configured as described above, according to the present invention, a composite piston pin with a high material yield rate can be manufactured using a small number of steps and a meow net shape.
なお、本発明は叙上の実施例に限定されるものでなく、
上記の説明から当業者が容易に推考し得るすべての変更
実施例を包摂するものである。It should be noted that the present invention is not limited to the above-mentioned embodiments,
It is intended to encompass all modifications that can be readily deduced by those skilled in the art from the above description.
第１図ないし第４図は本発明にか＼る製造方法により複
合ピストンピンを作製する状態を段階的に示す説明図、
第５図は本発明にか＼る製造方法により製造される複合
ピストンピンのもう一つの形態のものを示す説明図、第
６図及び第７図は本発明にか＼る製造方法により製造さ
れる複合ピストンピンのそれぞれ異なった望ましい形態
のものを示す説明図である。1 to 4 are explanatory diagrams showing step-by-step the state of manufacturing a composite piston pin by the manufacturing method according to the present invention,
FIG. 5 is an explanatory diagram showing another form of the composite piston pin manufactured by the manufacturing method according to the present invention, and FIGS. FIG. 3 is an explanatory view showing different desirable forms of the composite piston pin.
Claims (1)
有する円管を押出し成形する工程と、上記フィン付円管
を所望の長さに切断する工程と、 切断して得た短管の両端近傍のフィンを切除する工程と
、 上記工程で仕上げられた短管に焼入れする工程と、 焼入れした上記短管のフィンが設けられた円筒面に沿っ
て、強化プラスチック層又は繊維強化プラスチック層を
形成する工程と、 から成る複合ピストンピンの製造方法。 ２）円管の内面にフィンが設けられる請求項１に記載の
複合ピストンピンの製造方法。 ３）円管の外面にフィンが設けられる請求項１に記載の
複合ピストンピンの製造方法。 ４）互いに隣接する上記フィンの間の溝の幅が半径方向
内側へ向かって狭くなっていることを特徴とする請求項
２に記載の複合ピストンピンの製造方法。 ５）互いに隣接する上記フィンの間の溝の幅が半径方向
外側へ向かって狭くなっていることを特徴とする請求項
３に記載の複合ピストンピンの製造方法。[Claims] 1) extrusion molding a circular tube having fins extending in the axial direction on at least one cylindrical surface; cutting the finned circular tube to a desired length; a step of cutting off the fins near both ends of the short tube, a step of hardening the short tube finished in the above step, and a reinforcing plastic layer or fibers along the cylindrical surface of the hardened short tube where the fins are provided. A method for manufacturing a composite piston pin, comprising: a step of forming a reinforced plastic layer; 2) The method for manufacturing a composite piston pin according to claim 1, wherein fins are provided on the inner surface of the circular tube. 3) The method for manufacturing a composite piston pin according to claim 1, wherein fins are provided on the outer surface of the circular tube. 4) The method for manufacturing a composite piston pin according to claim 2, wherein the width of the groove between the adjacent fins becomes narrower toward the inside in the radial direction. 5) The method for manufacturing a composite piston pin according to claim 3, wherein the width of the groove between the adjacent fins becomes narrower toward the outside in the radial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31431689A JPH03177659A (en) | 1989-12-05 | 1989-12-05 | Manufacture of composite piston pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31431689A JPH03177659A (en) | 1989-12-05 | 1989-12-05 | Manufacture of composite piston pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03177659A true JPH03177659A (en) | 1991-08-01 |
Family
ID=18051883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31431689A Pending JPH03177659A (en) | 1989-12-05 | 1989-12-05 | Manufacture of composite piston pin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03177659A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000024989A (en) * | 1998-10-07 | 2000-05-06 | 토니헬샴 | Composite cylinder and method for manufacturing thereof |
| US20100154628A1 (en) * | 2008-12-22 | 2010-06-24 | A.G. Porta S.P.A. | Piston pin device and method of making the same |
| FR2972134A1 (en) * | 2011-03-03 | 2012-09-07 | Daimler Ag | Method for producing extruded part by e.g. extrusion, for use as support part in car, involves forming profiled portions on length portions in outer wall of extruded part, where profiled portions are formed with undercut |
-
1989
- 1989-12-05 JP JP31431689A patent/JPH03177659A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20000024989A (en) * | 1998-10-07 | 2000-05-06 | 토니헬샴 | Composite cylinder and method for manufacturing thereof |
| US20100154628A1 (en) * | 2008-12-22 | 2010-06-24 | A.G. Porta S.P.A. | Piston pin device and method of making the same |
| FR2972134A1 (en) * | 2011-03-03 | 2012-09-07 | Daimler Ag | Method for producing extruded part by e.g. extrusion, for use as support part in car, involves forming profiled portions on length portions in outer wall of extruded part, where profiled portions are formed with undercut |
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