JPS6054524B2 - Manufacturing method of ball joint type piston - Google Patents
Manufacturing method of ball joint type pistonInfo
- Publication number
- JPS6054524B2 JPS6054524B2 JP10820481A JP10820481A JPS6054524B2 JP S6054524 B2 JPS6054524 B2 JP S6054524B2 JP 10820481 A JP10820481 A JP 10820481A JP 10820481 A JP10820481 A JP 10820481A JP S6054524 B2 JPS6054524 B2 JP S6054524B2
- Authority
- JP
- Japan
- Prior art keywords
- ball
- spherical
- bearing body
- spherical seat
- joint type
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
- F16C11/0623—Construction or details of the socket member
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Pivots And Pivotal Connections (AREA)
Description
【発明の詳細な説明】 本発明はボール継手形ピストンの製造方法に関する。[Detailed description of the invention] The present invention relates to a method of manufacturing a ball joint type piston.
従来のボール継手形ピストンは、例えば第１図に示す
ようにピストン本体１と球面軸受体２とが一体になつた
ものか、あるいは第２図に示すようにピストン本体１’
と球面軸受体２’とが別体になる構造のものが知られて
いる。ところで、球面軸受体２、２’にはそれらの球面
座３の嵌合しているボールスタット４のボール部５との
潤滑のために油穴６が穿設されているが、第１図に示す
ような構造の場合その穿設加工が極めて困難であり、ま
た、第２図のものでは穿設加工の付加も含め、球面座２
’をピストン本体１’に固着するなどの加工工程が増え
、生産性が低下してしまう不都合があつた。 本発明は
上記の事情に鑑みなされたもので、嵌合のための搾り成
形前の球面座に一以上のスリットを形成してからボール
部を嵌合するようにし、加工能率を向上させたものてあ
る。A conventional ball joint type piston is, for example, one in which a piston body 1 and a spherical bearing body 2 are integrated as shown in FIG. 1, or a piston body 1' as shown in FIG.
A structure in which the bearing body and the spherical bearing body 2' are separated is known. By the way, oil holes 6 are formed in the spherical bearing bodies 2 and 2' for lubrication with the ball part 5 of the ball stud 4 fitted in the spherical seat 3. In the case of the structure shown, the drilling process is extremely difficult, and in the case of the structure shown in Fig. 2, the spherical seat 2 is
This increases the number of processing steps such as fixing the piston body 1' to the piston body 1', resulting in a disadvantage that productivity decreases. The present invention was made in view of the above circumstances, and improves processing efficiency by forming one or more slits in the spherical seat before squeeze forming for fitting and then fitting the ball part. There is.
以下、実施例を示す図面に基いて本発明を説明する。 EMBODIMENT OF THE INVENTION Hereinafter, this invention will be explained based on drawing which shows an Example.
第３図技工第５図は本発明の主要な工程を示すもので
、球面軸受体１０はあらかじめ冷間鍛造により、上部が
筒状の形状になつてピストン本体１１と一体に成形され
る。上記冷間鍛造時、球面軸受体１０上部側壁には球面
座１６の上方１２に開きかつピストン本体１１の軸と平
行になつて対向する二本のスリット１３ａ、１３ｂが同
時に形成される。次にボールスタット１４の先端ボール
部１５を球面軸受体１０の球面座１６に収めた後、球面
軸受体１０の上部の筒状部分１７を搾り成形法などによ
り、ボール部１５をかしめる。筒状部’分１７は、球面
座１６と同時に突設され、かつその内径は、球面座１６
に嵌合されたボール部１５の外径よりも大きく、つまり
、筒状部分１７とボール部１５との間に空隙部が生じる
ように設定されている。このかしめによりスリット１３
ａ、１・３ｂの上端は互いに接触するかもしくは近接し
スリット１３ａ、１３ｂの上部にいくに従つてスリット
幅は狭くなるが、下部はかしめ前のスリット幅とほぼ同
じ幅に開いたままになつており、球面座１６へ油を送る
穴としての役割りを十分果す。また、かしめ加工と同時
に、筒状部分１７とボール部１５との間には、密閉され
た空隙部が形成され、この空隙部において前記スリット
１３ａ，１３ｂが油穴として外部に開口している。そし
て、上記空隙部は、球面座１６へ供給される潤滑油を保
持する油溜としての役割を果している。以上のようにピ
ストン本体と球面軸受体との一体成形時にスリットを球
面軸受体に同時成形したうえで、搾り成形によりボール
スタツドのボール部を球面座に嵌合せしめることにより
、スリットの部分が油穴となり、従来の油穴を後工程で
穿設する方法に比較して工程数が減つたことは言うまで
もなく、従来の一体成形による油穴加工では放電加工で
行われることが多かつたが、この方法で３０〜６０秒か
かつていた加工時間を１１１０以下に短縮することがで
き、さらに、スリットの形成で、ボール部を嵌合するた
めの塑性加工を容易にするなどの実用上大きな効果を奏
することができた。3 and 5 show the main steps of the present invention, in which the spherical bearing body 10 is formed integrally with the piston body 11 by cold forging in advance so that the upper part thereof has a cylindrical shape. During the cold forging, two slits 13a and 13b are simultaneously formed in the upper side wall of the spherical bearing body 10, opening upward 12 of the spherical seat 16 and facing each other parallel to the axis of the piston body 11. Next, after the tip ball portion 15 of the ball stud 14 is placed in the spherical seat 16 of the spherical bearing body 10, the ball portion 15 is swaged by squeezing the upper cylindrical portion 17 of the spherical bearing body 10. The cylindrical portion 17 is provided in a protruding manner at the same time as the spherical seat 16, and its inner diameter is the same as that of the spherical seat 16.
The outer diameter of the ball portion 15 is larger than the outer diameter of the ball portion 15 that is fitted into the cylindrical portion 17, that is, a gap is formed between the cylindrical portion 17 and the ball portion 15. Due to this caulking, the slit 13
The upper ends of a, 1 and 3b touch or are close to each other, and the slit width becomes narrower toward the top of the slits 13a and 13b, but the lower part remains open to approximately the same width as the slit width before caulking. The hole serves as a hole for sending oil to the spherical seat 16. Further, at the same time as the caulking process, a sealed gap is formed between the cylindrical portion 17 and the ball portion 15, and the slits 13a and 13b are opened to the outside as oil holes in this gap. The cavity serves as an oil reservoir that holds lubricating oil supplied to the spherical seat 16. As described above, when the piston body and the spherical bearing body are integrally molded, the slit is formed on the spherical bearing body at the same time, and the ball part of the ball stud is fitted into the spherical seat by squeeze molding, so that the slit part is oil-free. It goes without saying that the number of steps is reduced compared to the conventional method of drilling oil holes in a later process, and conventional oil hole machining using integral molding was often done by electrical discharge machining. This method can shorten the machining time from 30 to 60 seconds to less than 1110 seconds, and the formation of slits has great practical effects such as facilitating plastic working for fitting the ball parts. I was able to play it.
さらに、スリット１３ａ，１３ｂに連通する前記空隙部
が油溜として機能することにより、潤滑油を安定して且
つ持続的に球面座１０に供給することができる結果、潤
滑性能が格段に向上する格別の効果を奏する。なお、上
記実施例ではスリットを二本対向して設けたが、これに
限定されることなく一以上であればよい。Furthermore, since the voids communicating with the slits 13a and 13b function as oil reservoirs, lubricating oil can be stably and continuously supplied to the spherical seat 10, resulting in an exceptional improvement in lubrication performance. It has the effect of In the above embodiment, two slits are provided facing each other, but the present invention is not limited to this, as long as there are one or more slits.
第１図および第２図は従来の方法で製作されたボール継
手形ピストンの断面図、第３図及至第５図は本発明の主
要製作工程を示すもので、第３図は一体成形後の斜視図
、第４図は中間工程を示す断面図、第５図は最終工程後
を示す斜視図てある。
１０・・・・・・球面軸受体、１１・・・・・ゼストン
本体、１３ａ，１３ｂ・・・・・・スリット、１５・・
・・・・ボール部。Figures 1 and 2 are cross-sectional views of a ball joint type piston manufactured by the conventional method, Figures 3 to 5 show the main manufacturing steps of the present invention, and Figure 3 shows the piston after integral molding. 4 is a sectional view showing an intermediate step, and FIG. 5 is a perspective view showing the state after the final step. 10... Spherical bearing body, 11... Zestone body, 13a, 13b... Slit, 15...
...Ball club.
Claims (1)
座と同軸に突設された円筒状を有す球面軸受体の上記筒
状部分の遊端部に軸方向に沿つて複数のスリットを形成
する工程と、上記球面座にボールスタットのボール部を
嵌合する工程と、上記ボール部が嵌合された球面軸受体
の上記筒状部分をかしめて上記ボール部を上記球面軸受
体に転動自在に連結するとともに上記スリットの上記遊
端部側を閉塞させて上記球面座に油を供給・保持するた
めの空隙部及びこの空隙部にて開口する油穴を形成する
工程とを具備することを特徴とするボール継手形ピスト
ンの製造方法。1. A plurality of slits are formed along the axial direction at the free end of the cylindrical portion of the spherical bearing body, which has a spherical seat formed inside the piston body and a cylindrical shape protruding coaxially with the spherical seat. a step of fitting the ball portion of the ball stud into the spherical seat; and crimping the cylindrical portion of the spherical bearing body into which the ball portion is fitted so that the ball portion can freely roll onto the spherical bearing body. and a step of forming a cavity for supplying and retaining oil to the spherical seat by connecting the slit to the free end side of the slit and forming an oil hole opening in the cavity. A manufacturing method for a ball joint type piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10820481A JPS6054524B2 (en) | 1981-07-13 | 1981-07-13 | Manufacturing method of ball joint type piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10820481A JPS6054524B2 (en) | 1981-07-13 | 1981-07-13 | Manufacturing method of ball joint type piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5813219A JPS5813219A (en) | 1983-01-25 |
| JPS6054524B2 true JPS6054524B2 (en) | 1985-11-30 |
Family
ID=14478653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10820481A Expired JPS6054524B2 (en) | 1981-07-13 | 1981-07-13 | Manufacturing method of ball joint type piston |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6054524B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63266177A (en) * | 1987-04-22 | 1988-11-02 | Toyota Autom Loom Works Ltd | Coupling method for connecting rod in compressor with swinging swash plate |
| JP2786873B2 (en) * | 1988-02-18 | 1998-08-13 | 三洋電機株式会社 | Manufacturing method of piston |
| CN106545492A (en) * | 2015-09-22 | 2017-03-29 | 无锡市德美嘉机械科技有限公司 | A kind of angle type axial piston pump or motor main shaft |
-
1981
- 1981-07-13 JP JP10820481A patent/JPS6054524B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5813219A (en) | 1983-01-25 |
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