JPS5785619A - Press working method - Google Patents

Press working method

Info

Publication number
JPS5785619A
JPS5785619A JP55159829A JP15982980A JPS5785619A JP S5785619 A JPS5785619 A JP S5785619A JP 55159829 A JP55159829 A JP 55159829A JP 15982980 A JP15982980 A JP 15982980A JP S5785619 A JPS5785619 A JP S5785619A
Authority
JP
Japan
Prior art keywords
blank
projected
periphery
projected part
recessed part
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
JP55159829A
Other languages
Japanese (ja)
Other versions
JPS5942574B2 (en
Inventor
Yutaka Hayashi
Michio Takagi
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP55159829A priority Critical patent/JPS5942574B2/en
Publication of JPS5785619A publication Critical patent/JPS5785619A/en
Publication of JPS5942574B2 publication Critical patent/JPS5942574B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

PURPOSE: To form a good recessed part preventing generation of creases in forming a recessed part in a projected part of a blank in which a projected part is formed by supporting the periphery of the part that forms the concave part in the direction of retreating of inner periphery of the projected part, and pressing the top of the projected part in a state that allows sufficient metal flow.
CONSTITUTION: The periphery of a part of a blank 1 that forms a recessed part is supported by a supporting stand 5 in the direction of retreating of inner peripheral face of a projected part, and the center of top of the projected part is pressed by a punch 7 without adapting the blank 1 to the supporting stand 5. The ratio t/D of the thickness t of the blank 1 to the diameter D of the projected part before forming the recessed part is set to 1/200≤t/D≤1/20. The blank 1 is then turned upside down, and the center of top of the outer peripheral face 6 of the projected part 2 is pressed by a punch 7 in a state that only the periphery of the blank 1 is supported by the supporting stand 5 to form a recessed part 8. Thus, by omitting conventional dies, nicely formed recessed part 8 can be obtained.
COPYRIGHT: (C)1982,JPO&Japio
JP55159829A 1980-11-13 1980-11-13 Pressing method Expired JPS5942574B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55159829A JPS5942574B2 (en) 1980-11-13 1980-11-13 Pressing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55159829A JPS5942574B2 (en) 1980-11-13 1980-11-13 Pressing method

Publications (2)

Publication Number Publication Date
JPS5785619A true JPS5785619A (en) 1982-05-28
JPS5942574B2 JPS5942574B2 (en) 1984-10-16

Family

ID=15702154

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55159829A Expired JPS5942574B2 (en) 1980-11-13 1980-11-13 Pressing method

Country Status (1)

Country Link
JP (1) JPS5942574B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009255179A (en) * 2002-06-27 2009-11-05 Sumitomo Metal Ind Ltd Material for welding, weld product and automobile body

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009255179A (en) * 2002-06-27 2009-11-05 Sumitomo Metal Ind Ltd Material for welding, weld product and automobile body

Also Published As

Publication number Publication date
JPS5942574B2 (en) 1984-10-16

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