JPS6082224A - Production of bellows - Google Patents

Production of bellows

Info

Publication number
JPS6082224A
JPS6082224A JP18693883A JP18693883A JPS6082224A JP S6082224 A JPS6082224 A JP S6082224A JP 18693883 A JP18693883 A JP 18693883A JP 18693883 A JP18693883 A JP 18693883A JP S6082224 A JPS6082224 A JP S6082224A
Authority
JP
Japan
Prior art keywords
pipe
diameter
stage
cylindrical part
bellows
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
Application number
JP18693883A
Other languages
Japanese (ja)
Inventor
Tadao Tazaki
忠雄 田崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Saginomiya Seisakusho Inc
Original Assignee
Saginomiya Seisakusho Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Saginomiya Seisakusho Inc filed Critical Saginomiya Seisakusho Inc
Priority to JP18693883A priority Critical patent/JPS6082224A/en
Publication of JPS6082224A publication Critical patent/JPS6082224A/en
Pending legal-status Critical Current

Links

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
    • B21D15/00—Corrugating tubes
    • B21D15/04—Corrugating tubes transversely, e.g. helically
    • B21D15/06—Corrugating tubes transversely, e.g. helically annularly

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE:To prevent generation of a crack in a large-diameter cylindrical part by subjecting a blank pipe to annealing in the stage of subjecting said pipe to intermediate bulging and subjecting further the pipe to bulging in this state and providing the cylindrical part of the diameter larger than the diameter of a pleat part to one body. CONSTITUTION:A blank pipe A is formed to an irregular shaped pipe A' having a large-diameter cylindrical part B' on the opening end side of the pipe A by an upper die and a lower die in the 1st stage. The pipe A' is annealed at a prescribed temp. in the 2nd stage and the annealed pipe A' is put into the dies in the 3rd stage and a liquid pressure is exerted to the pipe. The bellows B having a pleat part B1, the cylindrical part B2 of a large diameter and the collar part B3 is manufactured.

Description

【発明の詳細な説明】 本発明は金属素管から、ひだ部に連続した大径の筒部を
有するベローズのＭｖ１方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an Mv1 method for manufacturing a bellows having a large diameter cylindrical portion continuous to the pleated portion from a metal pipe.

従来においてかかるベローズを製造するには、第１図＋
ａ）に示される如き烟青銅等の金属素管Ａを型内に入れ
、液圧をかけてひだ部Ｂ＋　と該ひだ部Ｂｌよ゛り大径
の筒部Ｂ２及び鍔部Ｂ３を有するベローズＢを一工程で
製造していた（第１図ｂ）。Conventionally, in order to manufacture such a bellows, Fig. 1 +
A metal tube A made of smoked bronze or the like as shown in a) is placed in a mold, and hydraulic pressure is applied to produce a bellows B having a pleated portion B+, a cylindrical portion B2 having a larger diameter than the pleated portion Bl, and a flange portion B3. was manufactured in one step (Fig. 1b).

ところで、この場合の筒部Ｂ２ばひだ部Ｂ＋よりも大径
であると共にひだ部Ｂ＋の如くに縮小部が介在しないで
連続して膨大化しているので筒部Ｂ２に亀裂が発生し易
（、品質の安定した製品を量産することが困難であった
。By the way, in this case, the cylindrical portion B2 has a larger diameter than the pleated portion B+, and is continuously enlarged without a reduced portion like the pleated portion B+, so cracks are likely to occur in the cylindrical portion B2 (, It was difficult to mass produce products with stable quality.

本発明は上記した従来技術の欠点に着目して為されたも
のであり、素管に対して中間膨出加工を施した段階で焼
鈍処理して加工歪みを除去し、この状懸で更に膨出加工
を施してひだ部に対してそれより大径の筒部を一体に設
のたへローズを提供せんとするものである。The present invention has been made by focusing on the above-mentioned drawbacks of the prior art, and involves annealing the raw pipe at the stage where it is subjected to intermediate expansion processing to remove processing distortion, and in this state, further expansion is possible. The purpose is to provide a rose by integrally attaching a cylindrical portion with a larger diameter to the folded portion by performing a stamping process.

以下本発明の一実施例について図面と共に説明すれば、
Ａは内径５．０龍φ、Ｗ−さ０．０８５龍のステンレス
の円筒素管であり（第２図ａ）、第一工程として上型（
ポンチ）と下型（ダイス）により素管Ａの開口端側に６
．５鴎φの大径筒部Ｂ′を有する異径管Ａ′に形成しく
第３図ｂ）、次に第二工程として該異径管Ａ′を１００
０℃〜１１５０℃の温度において焼鈍し、次に第三工程
として焼鈍した異径管Δ′を型内に入れ、液圧をかけて
外１番７．５鶴φ、内径ｓ、　ｏ　ｍ−φのひだ部Ｂ＋
、内ｉ￥７゜７　ｍｅφ、軸方向長さ６．０顛φの大径
の筒部Ｂ２及び１０■■φの鍔部Ｂ３を有するベローズ
Ｂを製造する。An embodiment of the present invention will be described below with reference to the drawings.
A is a stainless steel cylindrical tube with an inner diameter of 5.0mm and a width of 0.085mm (Fig. 2a), and as the first step, an upper mold (
6 on the open end side of the raw tube A using a punch) and a lower die
．． A pipe A' having a large diameter cylindrical portion B' having a diameter of 5 mm is formed into a pipe A' having a large diameter (Fig. 3b), and then, as a second step, the pipe A' having a large diameter diameter B' is
Annealed at a temperature of 0°C to 1150°C, and then in the third step, the annealed pipe Δ' of different diameters is placed in a mold and hydraulic pressure is applied to make the tube with an outer diameter of 7.5 mm, an inner diameter of s, and an o m- φ pleat B+
A bellows B having a large diameter cylindrical portion B2 with an axial length of 6.0 mm φ and a flange portion B3 of 10 mm φ is manufactured.

上記の場合において、５．０龍φの素管が最終的に７．
７■１φの筒部乃至ば１０ｍ５φの鍔部に拡大されてい
るのであるが、途中において６．５　ｕφの中間拡大段
階におりる焼鈍工程が介在しているので、最終製品の大
径筒部において亀裂が発生ずることなく、品質の安定し
た製品を量産することが可能である。In the above case, the raw pipe with a diameter of 5.0 mm will eventually end up with a diameter of 7.0 mm.
7. The cylindrical part of 1φ is enlarged to the flange of 10m5φ, but since there is an annealing process that goes to the intermediate enlargement stage of 6.5 uφ, the large diameter cylindrical part of the final product is enlarged. It is possible to mass-produce products with stable quality without cracking.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図（ａｌ　（ｂｌは従来例の工程説明図、第２図（
ａｌ　ｆｂｌ（Ｃ）ば本発明の工程説明図である。 Ａ・・・・・・金屈素筒、八′・・・・・・異径管、Ｂ
’、Ｂ２・・・・・・大径筒部、Ｂ＋　・・・・・・ひ
だ部。 特許出願人　株式会社鷲宮製作所 第１図 （０） （ａ）　（ｂ） （Ｃ）Figure 1 (al) (bl is a process explanatory diagram of the conventional example, Figure 2 (
al fbl (C) is a process explanatory diagram of the present invention. A...Golden tube, 8'...Different diameter tube, B
', B2...Large diameter cylinder part, B+...Fold part. Patent applicant Washinomiya Seisakusho Co., Ltd. Figure 1 (0) (a) (b) (C)

Claims (1)

【特許請求の範囲】[Claims] 金属素管を小径前部と大径筒部を有する異径管に形成す
る第一工程、該異径管を焼鈍する第二工程、該大ｉ蚤前
部を更に大径に拡大し、該小径前部に複数のひだ部を形
成する第三工程から成ることを特徴とするベローズの製
造方法。A first step of forming a metal blank tube into a different diameter tube having a small diameter front portion and a large diameter cylindrical portion, a second step of annealing the different diameter tube, and enlarging the large diameter front portion to a larger diameter; A method for manufacturing a bellows, comprising a third step of forming a plurality of folds in the small diameter front portion.
JP18693883A 1983-10-07 1983-10-07 Production of bellows Pending JPS6082224A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18693883A JPS6082224A (en) 1983-10-07 1983-10-07 Production of bellows

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18693883A JPS6082224A (en) 1983-10-07 1983-10-07 Production of bellows

Publications (1)

Publication Number Publication Date
JPS6082224A true JPS6082224A (en) 1985-05-10

Family

ID=16197345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18693883A Pending JPS6082224A (en) 1983-10-07 1983-10-07 Production of bellows

Country Status (1)

Country Link
JP (1) JPS6082224A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1325784B2 (en) † 2002-01-08 2010-10-27 NHK SPRING Co., Ltd. Method of making a metallic bellows

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1325784B2 (en) † 2002-01-08 2010-10-27 NHK SPRING Co., Ltd. Method of making a metallic bellows

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