JPS633693B2 - - Google Patents
Info
- Publication number
- JPS633693B2 JPS633693B2 JP1161382A JP1161382A JPS633693B2 JP S633693 B2 JPS633693 B2 JP S633693B2 JP 1161382 A JP1161382 A JP 1161382A JP 1161382 A JP1161382 A JP 1161382A JP S633693 B2 JPS633693 B2 JP S633693B2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical body
- flange
- roller
- forming
- receiving roller
- 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
- 238000000034 method Methods 0.000 claims description 8
- 239000012530 fluid Substances 0.000 claims description 2
- 239000011324 bead Substances 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 238000003754 machining Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000007730 finishing process Methods 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D19/00—Flanging or other edge treatment, e.g. of tubes
- B21D19/02—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge
- B21D19/04—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers
- B21D19/046—Flanging or other edge treatment, e.g. of tubes by continuously-acting tools moving along the edge shaped as rollers for flanging edges of tubular products
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
【発明の詳細な説明】
本発明は軸流々体機械、例えば軸流フアン用ケ
ーシングのフランジ成形加工方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for forming flanges on a casing for an axial fluid machine, such as an axial fan.
軸流フアン用ケーシングは第１図に示すよう
に、円筒部１の両端にフランジ２が設けられてい
ることは周知のとおりである。このようなケーシ
ングは従来、第２図に示すように円筒部１とフラ
ンジ部２をそれぞれ別個に製作し、この両者１，
２を組合せて溶接により一体に結合して製作され
ていたゝめコスト高となる恐れがあつた。 As is well known, the casing for an axial fan has flanges 2 provided at both ends of a cylindrical portion 1, as shown in FIG. Conventionally, in such a casing, the cylindrical part 1 and the flange part 2 are manufactured separately as shown in FIG.
Since the two parts were combined and integrally welded together, there was a risk that the cost would be high.
そこで上記コストの低減をはかるため、現在は
第３図に示すようにフランジ部２を円筒部１と一
体に成形加工している。このようにフランジ部２
を円筒部１と一体成形するには、第４図に示す専
用機械により製作する。すなわち第５図に示すよ
うに薄板１ａを円筒状に湾曲して周方向の両端部
を互に突き合せ、この突き合せ端部を溶接ビード
１ｂにより一体に溶接して円筒体１を形成する。
ついで第４図に示すように円筒体１の長手方向の
両端部、すなわちフランジ成形部ｌの外側に、そ
の外周面に受けローラ３の外周面を接触させると
共に、内側に成形ローラ４を設け、拡開可能に設
けられた外チヤツク６および外チヤツク６の内側
に設けられ、かつ駆動源７により軸方向に移動可
能に、しかも回転可能に設けられた内チヤツク５
を円筒体１内に挿入する。 Therefore, in order to reduce the above-mentioned cost, the flange portion 2 is currently formed integrally with the cylindrical portion 1 as shown in FIG. In this way, the flange part 2
In order to integrally mold the cylindrical portion 1 with the cylindrical portion 1, it is manufactured using a special machine shown in FIG. That is, as shown in FIG. 5, a thin plate 1a is curved into a cylindrical shape, its circumferential ends are abutted against each other, and the abutted ends are welded together by a weld bead 1b to form a cylindrical body 1.
Next, as shown in FIG. 4, the outer circumferential surface of the receiving roller 3 is brought into contact with the outer circumferential surface of both ends of the cylindrical body 1 in the longitudinal direction, that is, the outside of the flange forming part l, and the forming roller 4 is provided inside. An outer chuck 6 that is expandable and an inner chuck 5 that is provided inside the outer chuck 6 and is movable in the axial direction and rotatable by a drive source 7.
is inserted into the cylindrical body 1.
次に内チヤツク５を介して外チヤツク６を円筒
体１の内周面に密着させた後に、前記内、外チヤ
ツク５，６および円筒体１を駆動源７により回転
させ、同時に受けローラ３を円筒体１の外周面に
押圧すると共に、成形ローラ４を半径方向に移動
させることによりフランジ部２を加工して成形す
る。この場合、受けローラ３および成形ローラ４
が接触する円筒体１の溶接部ｌの溶接ビード１ｂ
は、第６図に示すように円筒体１の外周面からの
盛り上り高さｔを排除するために、グラインダー
などで加工仕上げする必要があるので、多大の加
工々数を要する欠点があつた。 Next, after bringing the outer chuck 6 into close contact with the inner peripheral surface of the cylindrical body 1 via the inner chuck 5, the inner and outer chucks 5, 6 and the cylindrical body 1 are rotated by the drive source 7, and at the same time the receiving roller 3 is rotated. The flange portion 2 is processed and formed by pressing against the outer peripheral surface of the cylindrical body 1 and moving the forming roller 4 in the radial direction. In this case, the receiving roller 3 and the forming roller 4
Weld bead 1b of welded part l of cylindrical body 1 that contacts
As shown in Fig. 6, in order to eliminate the height t of the bulge from the outer peripheral surface of the cylindrical body 1, it is necessary to process and finish it with a grinder, etc., so it has the disadvantage of requiring a large number of machining steps. .
また受けローラ３を円筒体１に押圧して加工す
ると、成形後のフランジ２のフランジ平面２ａは
第７図に示すように高さＨだけ反るので、平面精
度を出すために成形ローラ４に多大の圧力を付加
してしごき成形しなければならないから、フラン
ジ平面２ａの板厚は大幅に減少する欠点があつ
た。 Furthermore, when the receiving roller 3 is pressed against the cylindrical body 1 for processing, the flange plane 2a of the flange 2 after forming is warped by a height H as shown in FIG. Since it is necessary to apply a large amount of pressure during ironing, there is a drawback that the thickness of the flange plane 2a is significantly reduced.
本発明は上記欠点を解消し、円筒体（ケーシン
グ）の剛性およびフランジの平面精度の向上をは
かることを目的とするもので、フランジの成形加
工時に、受けローラの外周面を円筒体端部に接触
させず、成形ローラにより円筒体端部を屈折して
受けローラの端面に接合させることを特徴とする
ものである。 The present invention aims to eliminate the above-mentioned drawbacks and improve the rigidity of the cylindrical body (casing) and the flatness accuracy of the flange. It is characterized in that the end of the cylindrical body is bent by a forming roller and joined to the end surface of the receiving roller without making contact with it.
以下本発明の一実施例を図面について説明す
る。 An embodiment of the present invention will be described below with reference to the drawings.
第８図において、１は従来例と同様に薄板を円
筒状に湾曲し、その周方向端部を溶接ビード１ｂ
により溶接して一体に結合された円筒体、２は円
筒体１と一体に成形加工されたフランジ部、３は
円筒体１の外側面（溶接ビード１ｂを含む）と接
触しない程度の適宜距離ｈを保つようにセツトさ
れた受けローラ、４は円筒体１の内側に半径方向
に移動可能に設けられた成形ローラで、この成形
ローラ２の移動により円筒体１の端部（フランジ
成形部）を受けローラ３の端面３ａに沿つて屈折
させて前記フランジ部２を成形する。その他の構
成は第４図に示す従来例と同一であるから説明お
よび図面を省略する。 In FIG. 8, 1 is a thin plate curved into a cylindrical shape as in the conventional example, and its circumferential end is welded by a weld bead 1b.
2 is a flange portion formed integrally with the cylindrical body 1, and 3 is an appropriate distance h such that it does not come into contact with the outer surface of the cylindrical body 1 (including the weld bead 1b). A receiving roller 4 is set so as to maintain the cylindrical body 1, and a forming roller 4 is provided so as to be movable in the radial direction. The flange portion 2 is formed by bending the receiving roller 3 along the end surface 3a. The rest of the configuration is the same as the conventional example shown in FIG. 4, so explanations and drawings will be omitted.
上記のように受けローラ３を円筒体１の外周面
と接触しない程度の適宜距離ｈを保つて設置した
理由は、受けローラ３を多種多様の形状および状
態のもとにおいて種々実験を行つた結果より、円
筒体１の端部を屈折してフランジを成形する場
合、円筒体１の剛性により、その外周面を受けロ
ーラ３を介して支持する必要はなく、屈折後のフ
ランジを平面状に形成するのに必要であることが
判明したからである。 The reason why the receiving roller 3 is installed at an appropriate distance h to avoid contact with the outer circumferential surface of the cylindrical body 1 as described above is the result of conducting various experiments with the receiving roller 3 in a wide variety of shapes and conditions. Therefore, when forming a flange by bending the end of the cylindrical body 1, due to the rigidity of the cylindrical body 1, there is no need to support the outer peripheral surface via the roller 3, and the flange after being bent is formed into a flat shape. This was because it turned out to be necessary to do so.
本実施例は上記のような構成からなり、円筒体
１を保持兼回転機構（図示せず）を介して回転さ
せながら、成形ローラ４を半径方向に移動させれ
ば、円筒体１の端部を受けローラ３の端面３ａに
沿つて屈折させることにより、フランジ部２を成
形加工することができる。そのフランジ部２の平
面精度は第９図に示すように、その平面の反り寸
法Ｈは0.5mm以下となり、第７図に示す従来例の
反り寸法Ｈが0.5〜1.5mm程度であるに比べて著し
く縮小させることができる。したがつて後工程に
おけるフランジ部の穴加工に際して平面の修正仕
上げを省略することが可能である。 This embodiment has the above-mentioned configuration, and by moving the forming roller 4 in the radial direction while rotating the cylindrical body 1 via a holding/rotating mechanism (not shown), the end of the cylindrical body 1 can be moved. By bending the receiving roller 3 along the end surface 3a, the flange portion 2 can be formed. As for the plane accuracy of the flange portion 2, as shown in Fig. 9, the warp dimension H of the plane is 0.5 mm or less, compared to the warp dimension H of the conventional example shown in Fig. 7, which is about 0.5 to 1.5 mm. It can be significantly reduced. Therefore, it is possible to omit the correction and finishing of the plane when drilling holes in the flange portion in a subsequent process.
また溶接ビードの盛上りを削り取る部分の溶接
は、溶け込みを十分にしなければならないから裏
波溶接を要する。ところが本実施例によれば、円
筒体１の端部（l1部分）の溶接ビードの盛上り部
を残してもよいから、前記l1部分の溶接ビードの
仕上げ加工を省略することができる。 Furthermore, when welding the part where the bulge of the weld bead is scraped off, sufficient penetration must be achieved, so uranami welding is required. However, according to this embodiment, since the raised portion of the weld bead at the end ( l1 portion) of the cylindrical body 1 may be left, the finishing process of the weld bead at the l1 portion can be omitted.
以上説明したように本発明によれば、フランジ
成形前の円筒体の溶接部仕上げ加工を大幅に減少
させるばかりでなく、フランジ成形時の成形加圧
力を軽減することにより、平面精度の向上、修正
工数の削減および加工々数の低減をはかることが
できる。また溶接ビードの盛上り部をフランジ部
近くまで残すことにより、円筒体の剛性の向上お
よびフランジ成形時の円筒体の割れをなくするこ
とができる。 As explained above, according to the present invention, it is possible to not only significantly reduce the finishing work of the welded part of the cylindrical body before flange forming, but also to improve and correct the flatness accuracy by reducing the forming pressure during flange forming. It is possible to reduce the number of man-hours and the number of machining operations. Furthermore, by leaving the raised portion of the weld bead close to the flange, it is possible to improve the rigidity of the cylindrical body and to eliminate cracks in the cylindrical body during flange forming.
第１図は従来の軸流フアン用ケーシングの断面
図、第２図は第１図のＡ部の詳細図、第３図は現
在のフランジの構成図、第４図は従来方法による
フランジ成形加工状態を示す説明断面図、第５図
および第６図は円筒体の形成説明図および板継ぎ
溶接部の説明図、第７図は従来のフランジ部の形
状説明図、第８図は本発明方法によるフランジ成
形加工状態を示す説明図、第９図は本発明に係わ
るフランジ部の形状説明図である。
１…円筒体、２…フランジ、３…受けローラ、
３…受けローラ端面、４…成形ローラ。
Figure 1 is a cross-sectional view of a conventional casing for an axial flow fan, Figure 2 is a detailed view of part A in Figure 1, Figure 3 is a configuration diagram of the current flange, and Figure 4 is a flange forming process using the conventional method. An explanatory sectional view showing the state, FIGS. 5 and 6 are explanatory views of the formation of the cylindrical body and an explanatory view of the plate joint welding part, FIG. 7 is an explanatory view of the shape of the conventional flange part, and FIG. 8 is an explanatory view of the method of the present invention. FIG. 9 is an explanatory view showing the shape of the flange portion according to the present invention. 1... Cylindrical body, 2... Flange, 3... Receiving roller,
3... End face of receiving roller, 4... Forming roller.
Claims (1)
して円筒体を成形し、この円筒体の端部の内、外
側に成形ローラと受けローラをそれぞれ設け、こ
の両ローラによりフランジを一体に成形加工する
フランジ成形加工方法において、フランジの成形
加工時に、受けローラの外周面を円筒体端部の外
周面に接触させず、成形ローラにより円筒体端部
を屈折して受けローラの端面に接合させることを
特徴とする軸流々体機械用ケーシングのフランジ
成形加工方法。1 A thin plate is bent into a cylindrical shape and then welded in the longitudinal direction to form a cylindrical body. A forming roller and a receiving roller are provided on the inner and outer ends of this cylindrical body, respectively, and the flange is integrally formed by these rollers. In the flange forming method, during the flange forming process, the outer circumferential surface of the receiving roller is not brought into contact with the outer circumferential surface of the end of the cylindrical body, and the end of the cylindrical body is bent by the forming roller and joined to the end surface of the receiving roller. A flange forming method for a casing for an axial fluid machine, characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1161382A JPS58132324A (en) | 1982-01-29 | 1982-01-29 | Flange forming method for casing for axial fluid machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1161382A JPS58132324A (en) | 1982-01-29 | 1982-01-29 | Flange forming method for casing for axial fluid machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58132324A JPS58132324A (en) | 1983-08-06 |
| JPS633693B2 true JPS633693B2 (en) | 1988-01-25 |
Family
ID=11782758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1161382A Granted JPS58132324A (en) | 1982-01-29 | 1982-01-29 | Flange forming method for casing for axial fluid machinery |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58132324A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9102215L (en) * | 1991-07-22 | 1993-01-23 | Pellikaan Foersaeljnings Ab | SET UP AND DEVICE FOR QUANTITY DEVICES |
| JP4853693B2 (en) * | 2001-04-26 | 2012-01-11 | 株式会社ノーリツ | Combustion device |
| US7681295B2 (en) * | 2006-06-29 | 2010-03-23 | Skf Usa Inc. | Method of making improved large diameter seals |
| CN102553998B (en) * | 2012-01-18 | 2014-01-08 | 湖州南浔振建机电成套设备有限公司 | a turning device |
| CN104826908B (en) * | 2015-04-13 | 2016-08-31 | 唐山远望幕墙装饰工程有限公司 | Beading machine |
| CN108213143B (en) * | 2018-03-14 | 2019-04-09 | 西安交通大学 | A design method of cylinder progressive flanging forming tool head |
| CN110087351A (en) * | 2019-05-17 | 2019-08-02 | 冼远程 | A kind of heating device and the method that rolls limit is processed on the heating device |
| CN110293173B (en) * | 2019-07-03 | 2022-01-18 | 厦门捷讯汽车零部件有限公司 | Double-side flanging and inner hole accurate stretching forming die and forming process |
-
1982
- 1982-01-29 JP JP1161382A patent/JPS58132324A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58132324A (en) | 1983-08-06 |
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