JPS5617132A - Manufacture of tapered steel pipe for use of coil spring - Google Patents

Manufacture of tapered steel pipe for use of coil spring

Info

Publication number
JPS5617132A
JPS5617132A JP9391379A JP9391379A JPS5617132A JP S5617132 A JPS5617132 A JP S5617132A JP 9391379 A JP9391379 A JP 9391379A JP 9391379 A JP9391379 A JP 9391379A JP S5617132 A JPS5617132 A JP S5617132A
Authority
JP
Japan
Prior art keywords
steel pipe
cavity
titled
forming
manufacture
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
JP9391379A
Other languages
Japanese (ja)
Inventor
Yoshihiro Hashimoto
Hideo Kokita
Original Assignee
Sumitomo Electric Ind Ltd
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 Sumitomo Electric Ind Ltd filed Critical Sumitomo Electric Ind Ltd
Priority to JP9391379A priority Critical patent/JPS5617132A/en
Publication of JPS5617132A publication Critical patent/JPS5617132A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To manufacture the titled steel pipe at greatly improved yield as compared with the conventional method, by introducing the steel pipe into the die provided with the cavity of shape desirable for the blank of the titled steel pipe, and by heating to soften this steel pipe under the condition that its inside is kept at high pressure, and then, by forming the steel pipe into the shape of the forming cavity.
CONSTITUTION: At manufacturing the titled steel pipe, the steel pipe A is inserted into the die 3 consisting of two segments forming the cavity 6 (consisting of the terminal zone 6a of diameter equal to outer diameter of the steel pipe A, the middle large diameter zone 6b, and the tapered zone 6c) to form the desirable shape as the material of the coil spring; while the inside of this steel pipe A is kept at high pressure, the electricity is supplied to the high frequency coil 7 possible to freely move in the longitudinal direction together with the backup rolls 8 in order to heat and soften the steel pipe A at the part lying in the forming cavity 6; the steel pipe A is taken out after being tight pressed to the inner wall of the cavity 6, and is cut into the specified length by the cutter; hereby, the titled steel pipe is obtained. Accordingly, the yield is greatly improved as compared with the cutting work, and the work is efficiently performed without making noise.
COPYRIGHT: (C)1981,JPO&Japio
JP9391379A 1979-07-23 1979-07-23 Manufacture of tapered steel pipe for use of coil spring Pending JPS5617132A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9391379A JPS5617132A (en) 1979-07-23 1979-07-23 Manufacture of tapered steel pipe for use of coil spring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9391379A JPS5617132A (en) 1979-07-23 1979-07-23 Manufacture of tapered steel pipe for use of coil spring

Publications (1)

Publication Number Publication Date
JPS5617132A true JPS5617132A (en) 1981-02-18

Family

ID=14095703

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9391379A Pending JPS5617132A (en) 1979-07-23 1979-07-23 Manufacture of tapered steel pipe for use of coil spring

Country Status (1)

Country Link
JP (1) JPS5617132A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5953814U (en) * 1982-09-29 1984-04-09
JPS5953813U (en) * 1982-09-28 1984-04-09
US4511469A (en) * 1982-11-26 1985-04-16 Ishigaki Kiko Co., Ltd. Filter press of movable twin head type
US4751835A (en) * 1981-11-05 1988-06-21 Ford Motor Company Method of manufacturing variable diameter driveshaft
WO1998043759A1 (en) * 1997-03-28 1998-10-08 The Budd Company Forming technique using discrete heating zones
US6006568A (en) * 1998-03-20 1999-12-28 The Budd Company Multi-piece hydroforming tool
KR100391438B1 (en) * 2000-12-30 2003-07-12 현대자동차주식회사 Molding apparatus for hydro-forming
WO2005092534A1 (en) * 2004-03-20 2005-10-06 Amborn, Peter Method for shaping a metallic hollow body in a shaping tool at an elevated temperature and a certain internal pressure
CN104874663A (en) * 2015-04-21 2015-09-02 西北工业大学 Incremental temperature difference bulging device for metal pipes and bulging method
CN104985043A (en) * 2015-01-30 2015-10-21 西北工业大学 Electromagnetic induction heating bulging apparatus and shaping method for metal conductor pipe

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4751835A (en) * 1981-11-05 1988-06-21 Ford Motor Company Method of manufacturing variable diameter driveshaft
JPS5953813U (en) * 1982-09-28 1984-04-09
JPS6234569Y2 (en) * 1982-09-28 1987-09-03
JPS5953814U (en) * 1982-09-29 1984-04-09
JPS6234570Y2 (en) * 1982-09-29 1987-09-03
US4511469A (en) * 1982-11-26 1985-04-16 Ishigaki Kiko Co., Ltd. Filter press of movable twin head type
EP1011888A1 (en) * 1997-03-28 2000-06-28 The Budd Company Forming technique using discrete heating zones
WO1998043759A1 (en) * 1997-03-28 1998-10-08 The Budd Company Forming technique using discrete heating zones
US5992197A (en) * 1997-03-28 1999-11-30 The Budd Company Forming technique using discrete heating zones
EP1011888A4 (en) * 1997-03-28 2000-06-28 Budd Co Forming technique using discrete heating zones
US6006568A (en) * 1998-03-20 1999-12-28 The Budd Company Multi-piece hydroforming tool
KR100391438B1 (en) * 2000-12-30 2003-07-12 현대자동차주식회사 Molding apparatus for hydro-forming
WO2005092534A1 (en) * 2004-03-20 2005-10-06 Amborn, Peter Method for shaping a metallic hollow body in a shaping tool at an elevated temperature and a certain internal pressure
US7810367B2 (en) 2004-03-20 2010-10-12 Karl Kipry Method of shaping a metallic hollow member in a shaping tool at increased temperature and under internal pressure
CN104985043A (en) * 2015-01-30 2015-10-21 西北工业大学 Electromagnetic induction heating bulging apparatus and shaping method for metal conductor pipe
CN104874663A (en) * 2015-04-21 2015-09-02 西北工业大学 Incremental temperature difference bulging device for metal pipes and bulging method

Similar Documents

Publication Publication Date Title
JPS5617132A (en) Manufacture of tapered steel pipe for use of coil spring
JPS6415216A (en) Grooving method for inner surface of metallic pipe
JPS5597838A (en) Production of base metal fitting of hose for pressure fluid or the like
JPS5611119A (en) Manufacture of stepped hollow shaft
JPS58145326A (en) Manufacture of perforated parts provided with narrow groove
JPS61235025A (en) Manufacture of bellows of omega type
JPS6092030A (en) Manufacture of aluminum odd-shaped sleeve
JPS55100816A (en) Forming method for taper pipe by u-o forming
JPS5728632A (en) Manufacture of side seamed t-shaped pipe joint
JPS5611123A (en) Method and apparatus for thread rolling
JPS59166318A (en) Method and equipment for manufacturing drawn tube
JPS54155975A (en) Rolling method for ring type product
JPS5489966A (en) Manufacture of cylinder with stepped portion
JPS5811387A (en) Manufacturing method of heat pipe element tube
JPS558350A (en) Method and apparatus for pre-cast forging of pipe material
JPS555120A (en) Manufacture of even speed joint
JPS5881523A (en) Manufacture of hollow with uneven thickness
JPS6037217A (en) Method and equipment for continuously manufacturing electric welded steel pipe
JPS54130464A (en) Manufacture of expansion type exhaust pipe
SU648302A1 (en) Method of making hollow multichannel profiles
JPS56151890A (en) Manufacture of internally stepped double heat pipe
JPS56151891A (en) Manufacture of internally stepped double heat pipe
JPS58110107A (en) Controlling method for wall thickness in stretch reducer for pipe
JPS5614047A (en) Working method by upsetter
JPS58181419A (en) Thermocouple