JPS59223131A - Assembling method of built-up hollow crankshaft - Google Patents
Assembling method of built-up hollow crankshaftInfo
- Publication number
- JPS59223131A JPS59223131A JP9822683A JP9822683A JPS59223131A JP S59223131 A JPS59223131 A JP S59223131A JP 9822683 A JP9822683 A JP 9822683A JP 9822683 A JP9822683 A JP 9822683A JP S59223131 A JPS59223131 A JP S59223131A
- Authority
- JP
- Japan
- Prior art keywords
- hole
- arm member
- pipe material
- holes
- pin
- 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
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
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
- F16C3/10—Crankshafts assembled of several parts, e.g. by welding by crimping
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、組立式中空クランクシャフトの組立方法に関
する。さらに詳細には、本発明は、アーム部材にパイプ
材を拡管結合することにより構成された組立式中空クラ
ンクシャフトの組立方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method of assembling a prefabricated hollow crankshaft. More specifically, the present invention relates to a method for assembling a prefabricated hollow crankshaft constructed by expanding and connecting a pipe material to an arm member.
（従来技術）
エンジンのクランクシャフトを中空構造にして軽量化を
はかることは既に試みられている。たとえば、特開昭Ｓ
ｔ−／Ａ３’）／！ｉ号公報には、板材によシ皿状に成
形した一部材を向い合わせて溶接することによりクラン
クシャフトのアーム部を構成し、該アーム部に突出成形
された円筒部を、他のアーム部に同様に成形された円筒
部と連結部材により結合してツヤ−ナル部とクランクビ
ン部とを形成する構造が開示されている。しかし、この
クランクシャフト構造は、部品点数が多く組立て工程が
複雑になり、しかもアーム部が板材により形成される之
め、十分な剛性を確保できないという問題がある。した
がって、アーム部を中実構造とし、これに中空パイプ材
を結合してクランクピン部およびジャーナル部を構成す
ることが部品点数および組立工数の観点から有利であり
、この際に、アーム部材と中空・（イブ材とを、たとえ
ば特開昭！ｔ３−１０２ｇｌ、／号公報に開示されてい
るような拡管結合法により結合することが考えられる。(Prior Art) Attempts have already been made to reduce the weight of engine crankshafts by making them hollow. For example, JP-A-Sho S.
t-/A3')/! Publication No. discloses a structure in which a similarly shaped cylindrical part is connected by a connecting member to form a glossy part and a crankshaft part. However, this crankshaft structure has a large number of parts, which complicates the assembly process, and furthermore, since the arm portion is formed of a plate material, there is a problem that sufficient rigidity cannot be ensured. Therefore, it is advantageous in terms of the number of parts and assembly man-hours to make the arm part a solid structure and connect a hollow pipe material to this to form the crank pin part and the journal part. - (It is conceivable to join the tube material with the tube material by a tube expansion joining method as disclosed in, for example, Japanese Patent Application Laid-Open No. 2003-130003-102GL.
しかし、この拡管結合法をクランクシャフトの組立てに
用いるとき、アーム部にはあらかじめ２個の穴が形成さ
れ、その穴に順次パイプ材が結合されるため、最初のパ
イプ材の拡管結合のとき、隣接する穴に変形を生じて一
本目のノ＋イブ材の挿入が困難になり、また人に隣接す
る部分の材料が流れて強度低下を生ずる、という問題が
ある。However, when this tube expansion and connection method is used to assemble the crankshaft, two holes are formed in the arm section in advance and pipe materials are connected to the holes in sequence, so when the pipe materials are expanded and connected for the first time, There are problems in that adjacent holes are deformed, making it difficult to insert the first piece of material, and the material in the area adjacent to the person flows, resulting in a decrease in strength.
（発明の目的）
本発明は、２個の穴を有するアーム部材にパイプ材を拡
管結合して中空クランクシャフトの組立てを行なう方法
における、」二連の問題を解決し、アーム部材へのパイ
プ材の拡管結合に際し、隣接する穴に変形を生じる恐れ
のない、クランクシャフトの組立方法を提供することを
目的とする。(Object of the Invention) The present invention solves two problems in a method of assembling a hollow crankshaft by expanding and joining a pipe material to an arm member having two holes, and An object of the present invention is to provide a method for assembling a crankshaft without causing deformation of adjacent holes when expanding and connecting the crankshafts.
（発明の構成）
上記の目的を達成するため、本発明は次のような構成を
有する。すなわち、本発明による組立式中空クランクシ
ャフトの組立方法に、了−Ｌ部材にａ個の穴を形成し７
、この穴にノ々イブ材を拡管結合することからな９、そ
の特徴は、２個の穴の一方にビンを密接嵌合【７たのち
、他方の穴にパイプ材を拡管結合し、次いで該一方の穴
からビンを抜いて該穴に他の・々イブ材を拡管結合する
ことにある。拡管結合を行なうには、アーム部材の穴に
パイプ材を挿入したのち、該・ンイプ材の中にその内径
よりやや大きい球音挿通するという、前記特開昭５．３
−１０コざる７号公報に開示された方法のｉｔかパイプ
材の内部に流体圧力を与える方法など、公知のどの方法
を使用してもよい。また、最初の・ヤイプ材の拡管結合
の際に第１番目の穴に嵌合されるビンは、クランクシャ
フト組立用金型に一体に形成【−でおけば便利である。(Structure of the Invention) In order to achieve the above object, the present invention has the following structure. That is, in the method for assembling the prefabricated hollow crankshaft according to the present invention, a number of holes are formed in the L member.
This is because the Nonobu material is expanded and joined to this hole9.The feature is that the bottle is tightly fitted into one of the two holes [7], then the pipe material is expanded and joined to the other hole, and then The purpose is to remove the bottle from one of the holes and expand and connect the other tube material to the hole. In order to perform the pipe expansion connection, a pipe material is inserted into the hole of the arm member, and then a ball slightly larger than the inner diameter is inserted into the pipe material.
Any known method may be used, such as the method disclosed in Kozaru No. 7, or the method of applying fluid pressure inside the pipe material. Furthermore, it is convenient if the pin that is fitted into the first hole during the first expansion and connection of the pipe material is formed integrally with the crankshaft assembly mold.
（発明の効果）
本発明の方法によれば、アーム部材の、２個の穴のうち
の一方にビンを密接嵌合した状態で、他方の穴にパイプ
材を拡管結合するので、パイプ材の結合されない方の穴
に変形を生じる恐れがなく、その後の作業遂行に支障を
米すことがない、１また一拡管結合のさいしこ加わる応
力により、アーム部材の材料が流れて強度低下を来すと
いう恐れも々くなる。(Effects of the Invention) According to the method of the present invention, while the bottle is tightly fitted into one of the two holes of the arm member, the pipe material is expanded and connected to the other hole. There is no risk of deformation in the hole that will not be joined, and there will be no hindrance to subsequent work. 1.The stress applied at the end of the expansion tube joint will cause the material of the arm member to flow, resulting in a decrease in strength. There is also a fear that this will happen.
（実施例の説明）
ｇｇ１図は本発明の一実施例を示す断面図であって、こ
の方法に使用される金型に、下型１と分篩自在の上型２
に固定したポンチ６とからなり、上澄１は平坦な上面３
３を有する基板３と、該基板３に植設されたビン４とを
有する。−上型２は、シリンダ等の図示しない周知の手
段によって上下動可能になっておりこの上型の下面に拡
管用ポンチ６が装着されてかり、その下端に２段ポンチ
部６ａが形成されている。アーム部材７は、一体の中火
金属部品により構成され、コ個の穴７ａ、７ｂを有する
。アーム部材７の穴７ａＫパイプ材８の一端を挿入した
のち、穴７ｂをビン４に嵌合させ、ｉ４イブ材８の他端
を基板３の上面３ａ上に載せてノにイブ材８の穴がポン
チ６の下方に未るようにアーム部材Ｔ′ｆ：位置決めす
る。次いで、上型２を流体圧等を作用させ゛Ｃ下向きに
駆動する。拡官用ポンチ６の先端に形成されｆｃ２段ポ
ンチ部６ａの小径部はパイプ材８の内径より小さく、大
径部はパイプ材８の内径よりやや大きい。したがって、
２段ポンチ部６ａはその小径部が先導してパイプ材８の
中に侵入し、大径部が・ぐイブ材８を外向きに拡径する
ように作用する。その結果、パイプ材８はアーム部材７
の穴７ａの壁に喰い込んで強固に結合される。結合′ｆ
ｆ：、１：り確実にするためには、穴７ａの壁面に粗面
加工を施すか、或いは創口を形成しておけばよい。(Explanation of Embodiment) Figure gg1 is a sectional view showing an embodiment of the present invention, and the mold used in this method includes a lower mold 1 and an upper mold 2 that can be sieved freely.
It consists of a punch 6 fixed to a
3 and a bottle 4 implanted in the substrate 3. - The upper mold 2 is movable up and down by a well-known means (not shown) such as a cylinder, and a tube expansion punch 6 is attached to the lower surface of the upper mold, and a two-stage punch portion 6a is formed at the lower end of the upper mold 2. There is. The arm member 7 is composed of an integral medium-heat metal part, and has a number of holes 7a and 7b. After inserting one end of the pipe material 8 into the hole 7a of the arm member 7, fit the hole 7b into the bottle 4, place the other end of the pipe material 8 on the upper surface 3a of the board 3, and then insert the hole 7b into the hole 7a of the pipe material 8. The arm member T'f is positioned so that it is below the punch 6. Next, the upper mold 2 is driven downward by applying fluid pressure or the like. The small diameter portion of the fc two-stage punch portion 6a formed at the tip of the enlargement punch 6 is smaller than the inner diameter of the pipe material 8, and the large diameter portion is slightly larger than the inner diameter of the pipe material 8. therefore,
The two-stage punch portion 6a has its small diameter portion leading the way into the pipe material 8, and its large diameter portion acting to expand the diameter of the pipe material 8 outward. As a result, the pipe material 8 becomes the arm member 7
It bites into the wall of the hole 7a and is firmly connected. bond 'f
f:, 1: In order to ensure this, the wall surface of the hole 7a may be roughened or an opening may be formed.
次いで、ピストン６を上昇させアーム部材７ｔ−ビンＡ
から抜くと、第２図に示すような小組立体９が得られる
。こ扛らの小ｇｉ二体９の穴７ｂに他の小組立体９のパ
イプ材８を挿入し、拡管結合することによシクラ／タシ
ャフトか組立てられる。Next, the piston 6 is raised and the arm member 7t-bin A
When pulled out, a subassembly 9 as shown in FIG. 2 is obtained. The pipe material 8 of the other small assembly 9 is inserted into the hole 7b of these two small gi bodies 9, and the pipes are expanded and connected to assemble the shicra/tashaft.
このとき、アーム部材７の他方の穴７ａにはすでにパイ
プ材Ｉが結合さ才しているので、変形の問題は生じない
が、必要があれば、すでに取付けられたパイプ材７の中
にビンを嵌合してもよい。At this time, since the pipe material I has already been connected to the other hole 7a of the arm member 7, no problem of deformation will occur. may be fitted.
第１図は本発明のクランクシャフト組立方法の一笑施例
を示す断面図、＠コ図にアーム部材にパイブ材を結合し
た後の全体組立てのための配列を示す断面図である。
３・・・基板、 ４・・・ビン、６・・・ポンチ
、 ６ａ・・・ａ段ポンチ部、７・・・アーム部材
、８・・・ノｆイブ材。
特許出願人 東洋工業株式会社
第１図
第２図
１５３−FIG. 1 is a cross-sectional view showing one embodiment of the crankshaft assembly method of the present invention, and FIG. 3... Board, 4... Bottle, 6... Punch, 6a... A-stage punch portion, 7... Arm member, 8... Knob material. Patent applicant: Toyo Kogyo Co., Ltd. Figure 1 Figure 2 153-
Claims (1)
管結合することからなる組立式中空クランクシャフトの
組立方法において、前記２個の穴の一方にビンを密接嵌
合したのち、他方の穴に／４’イブ材を拡管結合し、次
いで前記−万の穴から前記ピンを抜いて該穴に他のパイ
プ材を拡管結合することを特徴とする組立式中空クラン
クシャフトの組立方法。In a method for assembling a prefabricated hollow crankshaft, which comprises forming two holes in an arm member and expanding and connecting a pipe material to the holes, a bottle is tightly fitted into one of the two holes, and then the other is fitted. 1. A method for assembling a prefabricated hollow crankshaft, which comprises expanding and joining a /4' pipe material to the hole, then removing the pin from the hole, and expanding and joining another pipe material to the hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9822683A JPS59223131A (en) | 1983-06-02 | 1983-06-02 | Assembling method of built-up hollow crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9822683A JPS59223131A (en) | 1983-06-02 | 1983-06-02 | Assembling method of built-up hollow crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59223131A true JPS59223131A (en) | 1984-12-14 |
Family
ID=14214043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9822683A Pending JPS59223131A (en) | 1983-06-02 | 1983-06-02 | Assembling method of built-up hollow crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59223131A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009250346A (en) * | 2008-04-07 | 2009-10-29 | Toyota Motor Corp | Built-up type crankshaft and its method for manufacturing |
-
1983
- 1983-06-02 JP JP9822683A patent/JPS59223131A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009250346A (en) * | 2008-04-07 | 2009-10-29 | Toyota Motor Corp | Built-up type crankshaft and its method for manufacturing |
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