JPS62282724A - Manufacture of precise half hollow extrusion material - Google Patents
Manufacture of precise half hollow extrusion materialInfo
- Publication number
- JPS62282724A JPS62282724A JP61126234A JP12623486A JPS62282724A JP S62282724 A JPS62282724 A JP S62282724A JP 61126234 A JP61126234 A JP 61126234A JP 12623486 A JP12623486 A JP 12623486A JP S62282724 A JPS62282724 A JP S62282724A
- Authority
- JP
- Japan
- Prior art keywords
- semi
- hollow
- small opening
- extruded material
- supporting part
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 46
- 238000001125 extrusion Methods 0.000 title claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 title claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 10
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/02—Removing or drawing-off work
- B21C35/023—Work treatment directly following extrusion, e.g. further deformation or surface treatment
- B21C35/026—Removing sections from the extruded work, e.g. removing a strip to create an open profile
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/142—Making profiles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
Description
【発明の詳細な説明】
３、発明の詳細な説明
産業上の利用分野
この発明は、金属とくにアルミニウムまたはその金属製
の精密半中空押出材、すなわち例えば長尺ロッドレスシ
リンダーのシリンダーバレルとして使用されるような長
尺で周面の一部に長さ方向に沿ったスリット状の小開口
部を有する所謂セミホローと称されるような押出材で、
更には中空部の偏心によりその周りの肉厚断面積が偏寄
りを示すような扁心半中空押出材の製造方法に関する。Detailed Description of the Invention 3. Detailed Description of the Invention Industrial Field of Application The present invention relates to a precision semi-hollow extruded material made of metal, particularly aluminum, or a precision semi-hollow extrusion made of that metal, that is, for example, used as a cylinder barrel of a long rodless cylinder. It is a so-called semi-hollow extruded material that is long and has a small slit-like opening along its length in a part of its circumference.
Furthermore, the present invention relates to a method for producing an eccentric semi-hollow extruded material in which the wall thickness cross-sectional area around the hollow portion is eccentric due to eccentricity of the hollow portion.
従来の技術と問題点
ロッドレスシリンダーのシリンダーバレルとして使用さ
れるような半中空押出材は、殊にその小開口部の寸法、
長さ方向における真直性等に極めて高い精度が、要求さ
れる。ところが、斯る用途の半中空押出材では、使用時
に中空部に負荷される内圧によってその小開口部が拡大
方向に変形するのを防止する目的をもって上記中空部が
偏心され、小開口部と反対側の肉厚を増大した肩肉状態
に成形されるものであることも１俟って、通常の押出成
形法で成形するときは、充分に所期するような高精度を
得ることができず、爾後的に相当複雑な矯正作業を必要
とする不利があった。たとえば、第３図に示すような偏
心半中空押出材（１）で、その中空部（２）の内径：Ω
−Ｆ３０ｍｍｓ小開ロ部（３）小開二部−２６ｍＩｎと
するような場合、その許容寸法公差はいずれも±０．Ｉ
Ｍ程度であり、しかも長さ方向の歪、即ちねじれ、曲り
等はほとんど許容されないところであるが、同図の押出
材（１）のように中空部（２）が扁心しており、その中
心から小開口部（３）側の断面積に対し、反対側の断面
積が４倍以上の鳥肉状態であるような場合においては、
通常の押出成形法によって押出成形するときは、中空部
（２）の周りの肉厚の変化により各部のメタルフロー速
度の不均一、押出後の冷却速度の不均一、クーリングテ
ーブルに摺接するときの不安定等に起因して、せいぜい
得られる寸法精度は中空部内径：ｆｌ−８０±０．７ｍ
ｍ、小開ロ部幅＝Ｄ−６±０．５ｍｍ程度が限度であり
、かつクーリングテーブルに摺接して移動する冷却過程
で多少のねじれ、曲り等を生じることを避は得なかった
。Prior Art and Problems Semi-hollow extrusions, such as those used as cylinder barrels in rodless cylinders, are particularly sensitive to the dimensions of their small openings,
Extremely high precision is required in terms of straightness in the length direction. However, in semi-hollow extruded materials for such uses, the hollow part is eccentrically formed in order to prevent the small opening from deforming in the expanding direction due to the internal pressure applied to the hollow part during use. Due to the fact that it is molded into a shoulder shape with increased wall thickness on the sides, it is not possible to obtain the desired high precision when molding using normal extrusion molding methods. However, this method had the disadvantage of requiring considerably complicated correction work afterwards. For example, in the eccentric semi-hollow extruded material (1) as shown in Fig. 3, the inner diameter of the hollow part (2) is Ω.
-F30mms small opening bottom part (3) Small opening second part -26mIn, the allowable dimensional tolerance is ±0. I
M, and distortion in the length direction, that is, twisting, bending, etc., is hardly tolerated. However, as in the extruded material (1) in the same figure, the hollow part (2) is eccentric, and there is a small distance from the center. In cases where the cross-sectional area on the opposite side is four times or more larger than the cross-sectional area on the opening (3) side,
When extrusion molding is performed using the normal extrusion molding method, changes in the wall thickness around the hollow part (2) result in uneven metal flow rates at each part, uneven cooling rates after extrusion, and uneven metal flow when sliding on the cooling table. Due to instability etc., the dimensional accuracy that can be obtained at most is the inner diameter of the hollow part: fl-80±0.7m
m, the width of the small opening portion is limited to about D-6±0.5 mm, and it was inevitable that some twisting, bending, etc. would occur during the cooling process in which it moved in sliding contact with the cooling table.
この発明は上記のような問題点に鑑み、これを解決して
極めて高精度の半中空押出材を得ることができるその製
造方法を提供しようとするものである。In view of the above-mentioned problems, the present invention aims to solve the problems and provide a manufacturing method capable of obtaining a semi-hollow extruded material with extremely high precision.
問題点を解決する為の手段
この発明は、押出し成形に際して所期形状の半中空押出
材に所定のサポート部を一体に付設した状態に押出しを
行うものとし、押出し後に該サポート部を除去すること
によって高精度の半中空押出材を得ることをその内容と
するものである。Means for Solving the Problems In the present invention, during extrusion molding, a predetermined support part is integrally attached to a semi-hollow extruded material of a desired shape, and the support part is removed after extrusion. The purpose of this study is to obtain highly accurate semi-hollow extruded materials.
即ち、この発明は、周面の一部に長さ方向に沿ってスリ
ット状の小開口部を有する半中空押出材を押出成形する
に際し、上記半中空押出材の小朋口部の両側部外面に薄
肉の仮接合部を介してブリッジ状に上記小開口部をまた
がるサポート部を一体に存するサポート付き型材として
押出成形を行い、しかる後上記仮接合部を破断してサポ
ート部を分離除去することを特徴とする精密半中空押出
材の製造方法を要旨とする。That is, when extruding a semi-hollow extruded material having a small slit-like opening along its length in a part of the circumferential surface, the present invention provides for Extrusion molding is performed as a support-equipped mold material that integrally has a support part that spans the small opening in a bridge shape through a thin temporary joint part, and then the temporary joint part is broken and the support part is separated and removed. The gist of this paper is a method for manufacturing precision semi-hollow extruded materials characterized by:
上記のサポート部の断面形状は半中空押出材の形状との
関係で最も好適な任意形状を採択しうるが、半中空押出
材の部分を安定的に支持して押出後クーリングテーブル
面上に導いたさい、長さ方向にねじれが発生するのを確
実に防止する目的から、上記サポート部の断面形状は略
−状のものとし、その下面両側縁に膨出状の短脚部を設
けて、この短脚部の２点でテーブル面上に押出材を接触
させて支持するものとするのが好ましい。The cross-sectional shape of the support part described above can be any shape that is most suitable in relation to the shape of the semi-hollow extruded material, but it is important to stably support the semi-hollow extruded material and guide it onto the cooling table surface after extrusion. Furthermore, in order to reliably prevent twisting in the length direction, the cross-sectional shape of the support part is approximately --shaped, and bulging short legs are provided on both sides of the lower surface of the support part. It is preferable that the extruded material be brought into contact with and supported on the table surface at two points of the short legs.
実施例
以下、この発明の好適な実施例を添附図面に基づいて説
明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
第３図に示したようなアルミニウムたはその合金製の偏
心半中空押出材（１）を製造するに際して、この発明に
よれば先ずその押出し成形を第１図に示すようなサポー
ト部付き型材（Ａ）の断面形状にて行う。即ち、製品と
なる半中空押出材（１）の小開口部（３）の両側部外面
に、薄肉の仮接合部（４）を介して断面−状のサポート
部（５）を上記小開口部（３）をまたがるブリッジ状態
に一体に有するサポート付き型材（Ａ）として押出成形
を行う。上記仮接合部（４）の肉厚（１）は０． ３〜
０． ６ｍｍ程度の範囲とするのが好適である。また、
サポート部（５）の両隅部外面、即ち成形時に下面側と
なる水平部の両側縁部には、クーリングテーブル（Ｔ）
に安定的に摺接せしめるための膨出状の１対の短脚部（
６）（６）を形成せしめるものとするのが好ましい。即
ちこの１対の短脚部（６）（６）の形状により、押出型
材（Ａ）をテーブル（Ｔ）面上に導く際、該短脚部（６
）（６）がテーブル面に２点で摺接せられるので、型材
（Ａ）のねじれの発生を一層効果的に防止しつる。When manufacturing an eccentric semi-hollow extruded material (1) made of aluminum or its alloy as shown in FIG. Perform with the cross-sectional shape of A). That is, a cross-sectional support part (5) is attached to the outer surface of both sides of the small opening (3) of the semi-hollow extruded material (1) to be the product, through the thin temporary joint (4). (3) Extrusion molding is performed as a support-equipped mold material (A) that is integrally formed in a bridge state spanning the region. The wall thickness (1) of the temporary joint (4) is 0. 3~
0. A range of about 6 mm is suitable. Also,
A cooling table (T) is installed on the outer surface of both corners of the support part (5), that is, on both side edges of the horizontal part that becomes the lower surface side during molding.
A pair of bulging short legs (
6) It is preferable to form (6). That is, due to the shape of the pair of short legs (6) (6), when guiding the extruded material (A) onto the table (T) surface, the short legs (6)
) and (6) are brought into sliding contact with the table surface at two points, so that twisting of the mold material (A) can be more effectively prevented.
上記の如くサポート部（５）付きの型材（Ａ）として押
出成形したのち、要すれば所要の熱処理を施し、そして
最後に上記仮接合部（４）を破断してサポート部（５）
を分解除去することにより、所期する製品としての半中
空押出材（１）を得るものである。この分離は、仮接合
部をロールで押し切る方法、プレスで仮接合部を切断す
る方法等を採用しても良いが、仕上り状態の良好さから
、押出材の外面に振動子を押し当て、強制振動を付与す
ることにより、仮接合部に疲労破壊を生ぜしめて分離せ
しめるものとするのが好適である。After extrusion forming the mold material (A) with the support part (5) as described above, the required heat treatment is performed if necessary, and finally the temporary joint part (4) is broken to form the support part (5).
By decomposing and removing the semi-hollow extruded material (1), the desired product is obtained. For this separation, methods such as pressing the temporary joint with a roll or cutting the temporary joint with a press may be adopted, but for the sake of a good finish, pressing a vibrator against the outer surface of the extruded material and forcing It is preferable that vibration be applied to cause fatigue failure in the temporarily joined portion and cause it to separate.
なお、上記実施例では、断面を円形とす鳥肉る半中空押
出材（１）の製造について説明したが、角形その他の異
形状の半中空押出材の製造にもこの発明はもちろん同様
に適用しうる。In the above embodiment, the production of semi-hollow extruded material (1) with a round cross section was explained, but the present invention is of course equally applicable to the production of semi-hollow extruded material having a square or other irregular shape. I can do it.
発明の作用と効果
この発明の製造方法においては、半中空押出材にサポー
ト部を一体に付設した状態で押出し成形を行うので、そ
の押出し用ボートホールダイにける中子の周りでのメタ
ルフロー速度を均一化せしめることができ、押出材に曲
りを生じるのを防止しうる。また冷却過程でも、中空部
周りでの冷却速度を略均−化せしめ得る。このため押出
材に歪が発生するのを防止しつる。かつサポート部をも
って小開口部寸法が規制されるため、その寸法に大きな
バラツキを生じない。Functions and Effects of the Invention In the manufacturing method of the present invention, extrusion molding is performed with the support part integrally attached to the semi-hollow extruded material, so the metal flow rate around the core in the extrusion boat hole die is reduced. can be made uniform and can prevent bending of the extruded material. Also, in the cooling process, the cooling rate around the hollow portion can be approximately equalized. This prevents distortion from occurring in the extruded material. In addition, since the size of the small opening is regulated by the support portion, large variations in the size do not occur.
更には冷却時にサポート部をもってクーリングテーブル
に摺接させることができるので、製品とする半中空押出
材自体にテーブルとの摺接による擦過傷がつくのを回避
しうると共に、テーブル面上での押出材の安定を良好に
保つことができ、それにねじれを生じることをも回避し
うる。従って、上記１俟って、寸法精度に優れ、曲りや
ねじれがなく、しかも小開口部両側縁にパリ等を有さず
その表面状態の良好な精密半中空押出材を高能率に製造
方法することができる。Furthermore, since the support part can be brought into sliding contact with the cooling table during cooling, it is possible to avoid scratches on the semi-hollow extruded material itself due to sliding contact with the table, and to prevent the extruded material on the table surface from being scratched. Good stability can be maintained, and twisting can also be avoided. Therefore, it is a highly efficient method to produce a precision semi-hollow extruded material with excellent dimensional accuracy, no bending or twisting, and a good surface condition with no cracks or the like on both sides of the small opening. be able to.
図面はこの発明の実施例を示すもので、第１図はサポー
ト付き押出材の断面図、第２図はその一部の拡大断面図
、第３図はサポート部を分離除去して得られる半中空押
出材の斜視図である。
（Ａ）・・・サポート付き押出材、（１）・・・半中空
押出材、（２）・・・中空部、（３）・・・小開口部、
（４）・・・薄肉仮接合部、（５）・・・サポート部、
（６）・・・短脚部。
以上
伽
第１図
第３図The drawings show an embodiment of the present invention, in which Fig. 1 is a sectional view of an extruded material with support, Fig. 2 is an enlarged sectional view of a part thereof, and Fig. 3 is a half obtained by separating and removing the support part. It is a perspective view of a hollow extrusion material. (A)...Extruded material with support, (1)...Semi-hollow extruded material, (2)...Hollow part, (3)...Small opening part,
(4)...Thin temporary joint part, (5)...Support part,
(6)...Short leg. Figure 1 Figure 3
Claims (2)
口部を有する半中空押出材を押出成形するに際し、 上記半中空押出材の小開口部の両側部外面 に薄肉の仮接合部を介してブリッジ状に上記小開口部を
またがるサポート部を一体に有するサポート付き型材と
して押出成形を行い、しかる後上記仮接合部を破断して
サポート部を分離除去することを特徴とする精密半中空
押出材の製造方法。(1) When extrusion molding a semi-hollow extruded material having a small slit-like opening along the length direction on a part of the circumferential surface, a thin temporary material is placed on the outer surface of both sides of the small opening of the semi-hollow extruded material. It is characterized by performing extrusion molding as a supporting part integrally having a support part that spans the small opening in a bridge shape through a joint part, and then breaking the temporary joint part and separating and removing the support part. A method for manufacturing precision semi-hollow extrusions.
に１対のテーブル摺接用の短脚部を有するものとする特
許請求の範囲第１項記載の精密半中空押出材の製造方法
。(2) The support part has a substantially square cross section and has a pair of short legs for sliding contact with a table on the lower surface of both corners thereof. Production method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61126234A JPS62282724A (en) | 1986-05-30 | 1986-05-30 | Manufacture of precise half hollow extrusion material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61126234A JPS62282724A (en) | 1986-05-30 | 1986-05-30 | Manufacture of precise half hollow extrusion material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62282724A true JPS62282724A (en) | 1987-12-08 |
| JPH0422645B2 JPH0422645B2 (en) | 1992-04-20 |
Family
ID=14930107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61126234A Granted JPS62282724A (en) | 1986-05-30 | 1986-05-30 | Manufacture of precise half hollow extrusion material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62282724A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03275212A (en) * | 1990-03-26 | 1991-12-05 | Showa Alum Corp | Manufacture of special shaped extruding material made of high strength aluminium alloy |
| US5713159A (en) * | 1994-12-14 | 1998-02-03 | Dominion Plastics Inc. | Multi part plastic lineal |
| US6119308A (en) * | 1998-03-18 | 2000-09-19 | Eastern Metal Supply Of N.C., Inc. | Vertical blind extruded track and tilt rod members |
-
1986
- 1986-05-30 JP JP61126234A patent/JPS62282724A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03275212A (en) * | 1990-03-26 | 1991-12-05 | Showa Alum Corp | Manufacture of special shaped extruding material made of high strength aluminium alloy |
| US5713159A (en) * | 1994-12-14 | 1998-02-03 | Dominion Plastics Inc. | Multi part plastic lineal |
| US6119308A (en) * | 1998-03-18 | 2000-09-19 | Eastern Metal Supply Of N.C., Inc. | Vertical blind extruded track and tilt rod members |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0422645B2 (en) | 1992-04-20 |
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