JPS56168920A - Manufacture of flat disk - Google Patents

Manufacture of flat disk

Info

Publication number
JPS56168920A
JPS56168920A JP7034880A JP7034880A JPS56168920A JP S56168920 A JPS56168920 A JP S56168920A JP 7034880 A JP7034880 A JP 7034880A JP 7034880 A JP7034880 A JP 7034880A JP S56168920 A JPS56168920 A JP S56168920A
Authority
JP
Japan
Prior art keywords
cylinder
strip
flat disk
conical
conical cylinder
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
JP7034880A
Other languages
Japanese (ja)
Inventor
Shigeru Osawa
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.)
Topy Industries Ltd
Original Assignee
Topy Industries 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 Topy Industries Ltd filed Critical Topy Industries Ltd
Priority to JP7034880A priority Critical patent/JPS56168920A/en
Publication of JPS56168920A publication Critical patent/JPS56168920A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prevent the generation of cracks, bucklings, etc., of a metallic sheet, by forming a conical shape and then by pressing it into a flat shape, in case of manufacturing a doughnut shaped flat disk from a metallic strip.
CONSTITUTION: A straight strip is bent into a cylindrical shape; both edges of this cylindrical wall are butt welded to form a cylinder; this cylinder is formed by a press machine into a conical cylinder. Or otherwise, a circular arc shaped strip 1 is cut off from an iron sheet P and is bent into a conical cylinder. Thus formed conical cylinder shaped strip 1 is put on a lower die 5, and an upper die 6 is brought down in order to press the conical cylinder shaped strip 1 into a doughnut shaped flat disk.
COPYRIGHT: (C)1981,JPO&Japio
JP7034880A 1980-05-27 1980-05-27 Manufacture of flat disk Pending JPS56168920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7034880A JPS56168920A (en) 1980-05-27 1980-05-27 Manufacture of flat disk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7034880A JPS56168920A (en) 1980-05-27 1980-05-27 Manufacture of flat disk

Publications (1)

Publication Number Publication Date
JPS56168920A true JPS56168920A (en) 1981-12-25

Family

ID=13428826

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7034880A Pending JPS56168920A (en) 1980-05-27 1980-05-27 Manufacture of flat disk

Country Status (1)

Country Link
JP (1) JPS56168920A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61229431A (en) * 1985-04-04 1986-10-13 Tooken:Kk Machining method for metal
WO2008111122A1 (en) * 2007-03-12 2008-09-18 Kanemitsu Corporation Process for manufacturing ring-shaped member

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61229431A (en) * 1985-04-04 1986-10-13 Tooken:Kk Machining method for metal
WO2008111122A1 (en) * 2007-03-12 2008-09-18 Kanemitsu Corporation Process for manufacturing ring-shaped member

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