JPS55147424A - Production of u.o.e. steel pipe - Google Patents
Production of u.o.e. steel pipeInfo
- Publication number
- JPS55147424A JPS55147424A JP5567679A JP5567679A JPS55147424A JP S55147424 A JPS55147424 A JP S55147424A JP 5567679 A JP5567679 A JP 5567679A JP 5567679 A JP5567679 A JP 5567679A JP S55147424 A JPS55147424 A JP S55147424A
- Authority
- JP
- Japan
- Prior art keywords
- forming
- steel plate
- punch
- edge
- angle
- 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
Links
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
PURPOSE: To reduce press forming force at UO forming and prevent the occurrence of peaking without requiring exchanging of dies according to the diameters of steel pipes by forming the shape of the end of the side edge under the specific conditions in the edge bending process of the side edges of the steel plate.
CONSTITUTION: The punch 1 embedded in a punch holder 5 and a punch support 3 are made horizontally movable so as to permit changing of the spacing with a die 2 according to the thickness of a steel plate 4. To bend the edge of the steel plate 4, a forming length l is beforehand set under the following conditions, after which the steel plate 4 is clamped by blank holder 7 and the punch 1 is pushed up to a forming angle Q (hence the forming angle Q is determined by the stroke of the punch). Namely, l/w=0.04W0.08, Q=30W60° (where l is forming length, w the width of the steel plate and Q the forming angle).
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5567679A JPS55147424A (en) | 1979-05-09 | 1979-05-09 | Production of u.o.e. steel pipe |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5567679A JPS55147424A (en) | 1979-05-09 | 1979-05-09 | Production of u.o.e. steel pipe |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55147424A true JPS55147424A (en) | 1980-11-17 |
Family
ID=13005479
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5567679A Pending JPS55147424A (en) | 1979-05-09 | 1979-05-09 | Production of u.o.e. steel pipe |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55147424A (en) |
-
1979
- 1979-05-09 JP JP5567679A patent/JPS55147424A/en active Pending
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