JPS57127536A - Upset forging method for short material using porter bar - Google Patents

Upset forging method for short material using porter bar

Info

Publication number
JPS57127536A
JPS57127536A JP1349381A JP1349381A JPS57127536A JP S57127536 A JPS57127536 A JP S57127536A JP 1349381 A JP1349381 A JP 1349381A JP 1349381 A JP1349381 A JP 1349381A JP S57127536 A JPS57127536 A JP S57127536A
Authority
JP
Japan
Prior art keywords
die
forged product
forging
porter bar
intermediate forged
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
JP1349381A
Other languages
Japanese (ja)
Inventor
Takashige Yamamura
Tsuneya Ueno
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP1349381A priority Critical patent/JPS57127536A/en
Publication of JPS57127536A publication Critical patent/JPS57127536A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/08—Upsetting

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

PURPOSE:To simplify forging process and increase yield by deforming the material by forging, sticking fast to a porter bar, carrying the material to next process keeping the state of adhesion, and forging at the same time. CONSTITUTION:The material 33 is inserted into a die 29 for the first process. Axial force of a punch 25 is received by a porter bar 34 smaller in diameter than the material 33. At the same time, the material 33 is deformed by forging and stuck fast to the axial force receiving end of the porter bar 34 to form the first intermediate forged product 33a. The first intermediate forged product 33a is moved laterally from the die 29, and inserted into a die 30 for the second process, and the second intermediate forged product 33b is formed by expanding the outer diameter. Then, the third intermediate forged product 33c is formed by forging to a bottomed cylindrical body in a die 31 for the third process. Similarey, the third intermediate forged product 33c is taken out of the die 31 for the third process together with the porter bar 34 and held in a blanking die 32. The bottom is blanked by a blanking punch 28 and at the same time, the porter bar is separated from the material 33. Dust formed by blanking is removed and final forged product 33d is formed.
JP1349381A 1981-01-29 1981-01-29 Upset forging method for short material using porter bar Pending JPS57127536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1349381A JPS57127536A (en) 1981-01-29 1981-01-29 Upset forging method for short material using porter bar

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1349381A JPS57127536A (en) 1981-01-29 1981-01-29 Upset forging method for short material using porter bar

Publications (1)

Publication Number Publication Date
JPS57127536A true JPS57127536A (en) 1982-08-07

Family

ID=11834634

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1349381A Pending JPS57127536A (en) 1981-01-29 1981-01-29 Upset forging method for short material using porter bar

Country Status (1)

Country Link
JP (1) JPS57127536A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882924A (en) * 1987-09-15 1989-11-28 Sanshin Industry Co., Ltd. Method and apparatus for manufacturing hollow cylindrical guide roller for magnetic recording tape

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882924A (en) * 1987-09-15 1989-11-28 Sanshin Industry Co., Ltd. Method and apparatus for manufacturing hollow cylindrical guide roller for magnetic recording tape

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