JPS57168744A - Formation of hollow product in multistage former - Google Patents

Formation of hollow product in multistage former

Info

Publication number
JPS57168744A
JPS57168744A JP5411981A JP5411981A JPS57168744A JP S57168744 A JPS57168744 A JP S57168744A JP 5411981 A JP5411981 A JP 5411981A JP 5411981 A JP5411981 A JP 5411981A JP S57168744 A JPS57168744 A JP S57168744A
Authority
JP
Japan
Prior art keywords
hollow
punching
stage
stages
formation
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
JP5411981A
Other languages
Japanese (ja)
Other versions
JPS5832019B2 (en
Inventor
Kenji Deki
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP5411981A priority Critical patent/JPS5832019B2/en
Publication of JPS57168744A publication Critical patent/JPS57168744A/en
Publication of JPS5832019B2 publication Critical patent/JPS5832019B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
    • B21K23/00—Making other articles
    • B21K23/04—Making other articles flanged articles

Landscapes

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

Abstract

PURPOSE:To produce a hollow product of high accuracy in the stage of making hollow products continuously from metallic blank materials by means of punches and dies by punching a hole in the inside surface of a cylindrical part in an intermediate stage, and extruding the fracture surface of the shear cut produced in the trace of the punching from the end face of the hollow hole in parallel with the formation of a flange in cold pressing stages of post steps. CONSTITUTION:A metallic blank material 12' cut to a prescribed size in two stages (a), (b) of the fore steps is preliminarily cold pressed 12'' then drawn to form a hollow cup body 12b having a bottom part 12a at one end. Next, this cup body 12 is pushed of the part 12a to form a hollow cylindrical body 12b in the 3rd step of an intermediate stage (c). The bottom part 12a is formed at one end of the body 12b and this is punched in the intermediate punching stage (c) whereby a fracture surface 12 of a shear cut is produced in the trace of the punching. Next, this punched part is flared successively with punches 10, 11 and dies 5, 6 in press-forming stages (d), (e) of the post steps, whereby a hollow product 12 having a flange 12d in the end part by way of circular conical flare 12c is completed.
JP5411981A 1981-04-09 1981-04-09 Hollow product forming method in multi-stage former Expired JPS5832019B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5411981A JPS5832019B2 (en) 1981-04-09 1981-04-09 Hollow product forming method in multi-stage former

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5411981A JPS5832019B2 (en) 1981-04-09 1981-04-09 Hollow product forming method in multi-stage former

Publications (2)

Publication Number Publication Date
JPS57168744A true JPS57168744A (en) 1982-10-18
JPS5832019B2 JPS5832019B2 (en) 1983-07-09

Family

ID=12961703

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5411981A Expired JPS5832019B2 (en) 1981-04-09 1981-04-09 Hollow product forming method in multi-stage former

Country Status (1)

Country Link
JP (1) JPS5832019B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6040642A (en) * 1983-08-12 1985-03-04 Sakamura Seiatsu Kk Manufacture of middle recessed hollow cylinder
JPS62166046A (en) * 1986-01-16 1987-07-22 Tokai Rika Co Ltd Manufacture of flanged cylindrical member

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6040642A (en) * 1983-08-12 1985-03-04 Sakamura Seiatsu Kk Manufacture of middle recessed hollow cylinder
JPS62166046A (en) * 1986-01-16 1987-07-22 Tokai Rika Co Ltd Manufacture of flanged cylindrical member

Also Published As

Publication number Publication date
JPS5832019B2 (en) 1983-07-09

Similar Documents

Publication Publication Date Title
US4299112A (en) Method and device for producing synchronizer ring
JPS5659555A (en) Production of joint
GB836706A (en) Improvements relating to the production of hollow metal bodies by pressing
JPS5530357A (en) Production of v-pulley
JPS57168744A (en) Formation of hollow product in multistage former
JPS56154237A (en) Manufacture of nut with flange
JPS5659557A (en) Press-forming method of flange nut material
JPS56113827A (en) Manufacture of inner and outer ring of conical roller bearing
JPS57195552A (en) Method for press-forming piston in former
GB609907A (en) Process of making hollow metal articles
JPS5714440A (en) Method and device for production of product having tooth profile
SU719747A1 (en) Method of flanging holes
JPS6431537A (en) Heading method for hollow part
JPS5699040A (en) Die for manufacturing flanged hollow product
JPS5758936A (en) Manufacture of seamless eccentric reducer tube joint
JPS56122638A (en) Production of eye joint
JPS57160543A (en) Cold forging method of hollow cylindrical body
SU709238A1 (en) Method of making hollow parts
SU770613A2 (en) Method of producing chamfered holes
SU1155337A1 (en) Method of manufacturing hollow articles with a hole in bottom
SU1088842A1 (en) Method of manufacturing hollow sleeve-shaped articles
SU770625A1 (en) Method of producing spheric or conical washers
JPS5536069A (en) Forging method of toothed wheel with projection
JPS57160544A (en) Cold forging method of hollow cylindrical body
JPH03221235A (en) Manufacture of hollow member