JPS57142731A - Forming method for cylinder for bush - Google Patents

Forming method for cylinder for bush

Info

Publication number
JPS57142731A
JPS57142731A JP2673481A JP2673481A JPS57142731A JP S57142731 A JPS57142731 A JP S57142731A JP 2673481 A JP2673481 A JP 2673481A JP 2673481 A JP2673481 A JP 2673481A JP S57142731 A JPS57142731 A JP S57142731A
Authority
JP
Japan
Prior art keywords
steel plate
press
die
bulge
corner
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
JP2673481A
Other languages
Japanese (ja)
Inventor
Koichi Tanimoto
Keinosuke Hara
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.)
BRIDGESTONE BOUSHIN GOMME KK
BURIJISUTON BOUSHIN GOMU KK
Bridgestone Corp
Original Assignee
BRIDGESTONE BOUSHIN GOMME KK
BURIJISUTON BOUSHIN GOMU KK
Bridgestone Corp
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 BRIDGESTONE BOUSHIN GOMME KK, BURIJISUTON BOUSHIN GOMU KK, Bridgestone Corp filed Critical BRIDGESTONE BOUSHIN GOMME KK
Priority to JP2673481A priority Critical patent/JPS57142731A/en
Publication of JPS57142731A publication Critical patent/JPS57142731A/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
    • B21D51/00—Making hollow objects
    • B21D51/02—Making hollow objects characterised by the structure of the objects
    • B21D51/10—Making hollow objects characterised by the structure of the objects conically or cylindrically shaped objects

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE:To form a titled cylindrical body inexpensively by placing a steel plate having width corresponding to the circumferential length of inner cylinder in a press die provided with a projected step at a corner, cutting to a specified length by press working with a corresponding die having a bulge of the same shape with the step at a position opposite to the step, and bending to a cylindrical form by fitting a concave part thus formed. CONSTITUTION:A steel plate 10 cut to width W corresponding to circumferential length of an inner cylinder A is carried to a press die 11 that has a projected step 13 at a corner and press worked with a corresponding die 14 that has a bulge of the same shape with the step 13 at a position opposite to the step 13 to form concave parts (a) (b) on both ends of the steel plate 10. Next, the steel plate is sent intermittently to bending process. In bending process, it is cut to a specified length (l) and bent to a cylindrical shape in which concave parts (a) (b) are fitted together.
JP2673481A 1981-02-27 1981-02-27 Forming method for cylinder for bush Pending JPS57142731A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2673481A JPS57142731A (en) 1981-02-27 1981-02-27 Forming method for cylinder for bush

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2673481A JPS57142731A (en) 1981-02-27 1981-02-27 Forming method for cylinder for bush

Publications (1)

Publication Number Publication Date
JPS57142731A true JPS57142731A (en) 1982-09-03

Family

ID=12201533

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2673481A Pending JPS57142731A (en) 1981-02-27 1981-02-27 Forming method for cylinder for bush

Country Status (1)

Country Link
JP (1) JPS57142731A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50154156A (en) * 1974-06-05 1975-12-11
JPS55120416A (en) * 1979-03-09 1980-09-16 Furukawa Electric Co Ltd:The Manufacture of thin walled metal pipe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50154156A (en) * 1974-06-05 1975-12-11
JPS55120416A (en) * 1979-03-09 1980-09-16 Furukawa Electric Co Ltd:The Manufacture of thin walled metal pipe

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