JPS57142736A - Cold forging method - Google Patents

Cold forging method

Info

Publication number
JPS57142736A
JPS57142736A JP2715981A JP2715981A JPS57142736A JP S57142736 A JPS57142736 A JP S57142736A JP 2715981 A JP2715981 A JP 2715981A JP 2715981 A JP2715981 A JP 2715981A JP S57142736 A JPS57142736 A JP S57142736A
Authority
JP
Japan
Prior art keywords
projection
pass
hole
die
cold forging
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
JP2715981A
Other languages
Japanese (ja)
Inventor
Motoya Yamamoto
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.)
SANKIYOU SEISAKUSHO KK
Sankyo Manufacturing Co Ltd
Original Assignee
SANKIYOU SEISAKUSHO KK
Sankyo Manufacturing Co 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 SANKIYOU SEISAKUSHO KK, Sankyo Manufacturing Co Ltd filed Critical SANKIYOU SEISAKUSHO KK
Priority to JP2715981A priority Critical patent/JPS57142736A/en
Publication of JPS57142736A publication Critical patent/JPS57142736A/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
    • B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging

Landscapes

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

Abstract

PURPOSE:To form the projection and the body by one process by using a die provided in the bottom part with a pass that has a hole of the same size with desired projection, inserting an Al material provided in an end face with a projection similar in shape with, but slightly smaller than, the hole of the die into the pass, and press forming by the punch. CONSTITUTION:In forming a product 1 having a projection 3 which is in a body with the body 2 on an end face using an Al material 1', a hole 7 which is the same size with the projection 3 of the product 1 is formed on the bottom of a pass of a die 4. Next, a projection 3' similar in shape with but slightly smaller than the hole 7 of the die 4 is made on an end face of the Al material 1', and the projection 3' is inserted into the hole 7 of the pass 6 and the Al material 1' is attached to the pass 6. Then, press forming is made by the punch 5.
JP2715981A 1981-02-26 1981-02-26 Cold forging method Pending JPS57142736A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2715981A JPS57142736A (en) 1981-02-26 1981-02-26 Cold forging method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2715981A JPS57142736A (en) 1981-02-26 1981-02-26 Cold forging method

Publications (1)

Publication Number Publication Date
JPS57142736A true JPS57142736A (en) 1982-09-03

Family

ID=12213272

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2715981A Pending JPS57142736A (en) 1981-02-26 1981-02-26 Cold forging method

Country Status (1)

Country Link
JP (1) JPS57142736A (en)

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