JPS57146499A - Compression forming device for pulverulent body - Google Patents

Compression forming device for pulverulent body

Info

Publication number
JPS57146499A
JPS57146499A JP3202281A JP3202281A JPS57146499A JP S57146499 A JPS57146499 A JP S57146499A JP 3202281 A JP3202281 A JP 3202281A JP 3202281 A JP3202281 A JP 3202281A JP S57146499 A JPS57146499 A JP S57146499A
Authority
JP
Japan
Prior art keywords
die assembly
outer circumference
pulverulent
ring member
pulverulent body
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
JP3202281A
Other languages
Japanese (ja)
Inventor
Masaru Nishiguchi
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 JP3202281A priority Critical patent/JPS57146499A/en
Publication of JPS57146499A publication Critical patent/JPS57146499A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
    • B30B15/02—Dies; Inserts therefor; Mounting thereof; Moulds
    • B30B15/022—Moulds for compacting material in powder, granular of pasta form

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Powder Metallurgy (AREA)

Abstract

PURPOSE:To prevent generation of shearing frictional stress at the time of pulling out a compression formed pulverulent body and prevent occurrence of cracking and breakage of the formed body by splitting a die assembly in radial direction and sliding a ring member on the die assembly through a tapered face. CONSTITUTION:In compression forming of pulverulent body, a die assembly 14 is divided into plural parts in radial direction along the outer circumference, and a split ring 14b is fitted to the side of outer circumference of the split die body 14a. The ring member 13 is pulled downward by operating a hydraulic cylinder 21 and radial face pressure greater than that operating when pressing the pulverulent body is applied on the outer circumference of the die assembly 14 through the tapered face. Powder feeding and mass cutting are made under this condition, and the pulverulent body is compressed by lowering an upper punch 11. When the stopper 22 comes into contact with the upper face of the ring member 13, the upper punch 11 goes up and restraining force that has been applied to the die assembly 14 is released. Accordingly, the formed body can easily be pulled out without undergoing resistance due to shearing frictional stress.
JP3202281A 1981-03-06 1981-03-06 Compression forming device for pulverulent body Pending JPS57146499A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3202281A JPS57146499A (en) 1981-03-06 1981-03-06 Compression forming device for pulverulent body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3202281A JPS57146499A (en) 1981-03-06 1981-03-06 Compression forming device for pulverulent body

Publications (1)

Publication Number Publication Date
JPS57146499A true JPS57146499A (en) 1982-09-09

Family

ID=12347229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3202281A Pending JPS57146499A (en) 1981-03-06 1981-03-06 Compression forming device for pulverulent body

Country Status (1)

Country Link
JP (1) JPS57146499A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003074263A1 (en) * 2002-03-05 2003-09-12 Eisai Co., Ltd. Method and device for evaluating compression molding characteristics of powder
JP2005108948A (en) * 2003-09-29 2005-04-21 Mitsubishi Electric Corp Permanent magnet forming apparatus
JP2006093301A (en) * 2004-09-22 2006-04-06 Mitsubishi Electric Corp Apparatus of manufacturing annular magnet molded structure and method of manufacturing annular sintered magnet
JP2009291829A (en) * 2008-06-06 2009-12-17 Hitachi Powdered Metals Co Ltd Powder molding device
RU2470737C2 (en) * 2010-02-25 2012-12-27 Акционерное общество "Ульбинский металлургический завод" Method of moulding cylindrical articles from powder materials

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS495985U (en) * 1972-04-14 1974-01-18
JPS5290404A (en) * 1976-01-23 1977-07-29 Toyota Motor Corp Dies for powder forming

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS495985U (en) * 1972-04-14 1974-01-18
JPS5290404A (en) * 1976-01-23 1977-07-29 Toyota Motor Corp Dies for powder forming

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003074263A1 (en) * 2002-03-05 2003-09-12 Eisai Co., Ltd. Method and device for evaluating compression molding characteristics of powder
JP2005108948A (en) * 2003-09-29 2005-04-21 Mitsubishi Electric Corp Permanent magnet forming apparatus
JP2006093301A (en) * 2004-09-22 2006-04-06 Mitsubishi Electric Corp Apparatus of manufacturing annular magnet molded structure and method of manufacturing annular sintered magnet
US7524453B2 (en) 2004-09-22 2009-04-28 Mitsubishi Denki Kabushiki Kaisha Apparatus for manufacturing ring-shaped powder compact and method of manufacturing sintered ring magnet
JP2009291829A (en) * 2008-06-06 2009-12-17 Hitachi Powdered Metals Co Ltd Powder molding device
RU2470737C2 (en) * 2010-02-25 2012-12-27 Акционерное общество "Ульбинский металлургический завод" Method of moulding cylindrical articles from powder materials

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