JPS55114422A - Forming method of corrugated sheet - Google Patents

Forming method of corrugated sheet

Info

Publication number
JPS55114422A
JPS55114422A JP2069079A JP2069079A JPS55114422A JP S55114422 A JPS55114422 A JP S55114422A JP 2069079 A JP2069079 A JP 2069079A JP 2069079 A JP2069079 A JP 2069079A JP S55114422 A JPS55114422 A JP S55114422A
Authority
JP
Japan
Prior art keywords
length
corrugated sheet
size
blank plate
wave
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.)
Granted
Application number
JP2069079A
Other languages
Japanese (ja)
Other versions
JPS6115773B2 (en
Inventor
Hirotsugu Abiko
Toshihiko Miyama
Osamu Higuchi
Chuichi Saito
Katsuyoshi Baba
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2069079A priority Critical patent/JPS55114422A/en
Publication of JPS55114422A publication Critical patent/JPS55114422A/en
Publication of JPS6115773B2 publication Critical patent/JPS6115773B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE: To form the corrugated sheet at low cost by straightly using purchased blank materials having lateral bends by letting the forming development dimensional differences between the inside and outside diameters of the laterally bent blank plate to be formed be absorbed in the shape changes of the wave parts formed on the inside and outside diameter parts.
CONSTITUTION: Within the allowable range of the lateral bending size δ of a blank plate 1C, the length LA of an arc and the length LC of the same chord are approximately equal and may be regarded LA≈LC. Hence, based on the length LC of the chord and the lateral bending size δ, the angle θ that the inside diameter RO and arc assume is obtained as RO=(LC2+4δ2)/8δ, θ=2tan-1LC/2 (RO-δ). On the other hand, if it is assumed that the rectangular corrugated sheet 1B of a length LB having (n) wave parts of an equal pitch P could obtained based on this base plate 1C, then it must coincide with the original blank plate 1C when developed and the wave part for 1 pitch is obtained as la≈0.01745R0θ/n, lb≈0.01745 (RO+W)θ/n as this is developed to the unit secotor portion of inside diameter size la and the outside diameter size to lb.
COPYRIGHT: (C)1980,JPO&Japio
JP2069079A 1979-02-26 1979-02-26 Forming method of corrugated sheet Granted JPS55114422A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2069079A JPS55114422A (en) 1979-02-26 1979-02-26 Forming method of corrugated sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2069079A JPS55114422A (en) 1979-02-26 1979-02-26 Forming method of corrugated sheet

Publications (2)

Publication Number Publication Date
JPS55114422A true JPS55114422A (en) 1980-09-03
JPS6115773B2 JPS6115773B2 (en) 1986-04-25

Family

ID=12034148

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2069079A Granted JPS55114422A (en) 1979-02-26 1979-02-26 Forming method of corrugated sheet

Country Status (1)

Country Link
JP (1) JPS55114422A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877718A (en) * 1981-11-05 1983-05-11 Hitachi Ltd Method and device for forming corrugated plate
JPS6137326A (en) * 1984-07-30 1986-02-22 Hitachi Ltd Forming device of corrugated sheet

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877718A (en) * 1981-11-05 1983-05-11 Hitachi Ltd Method and device for forming corrugated plate
JPH0241374B2 (en) * 1981-11-05 1990-09-17
JPS6137326A (en) * 1984-07-30 1986-02-22 Hitachi Ltd Forming device of corrugated sheet

Also Published As

Publication number Publication date
JPS6115773B2 (en) 1986-04-25

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