JPS56117836A - Burring device - Google Patents

Burring device

Info

Publication number
JPS56117836A
JPS56117836A JP1995780A JP1995780A JPS56117836A JP S56117836 A JPS56117836 A JP S56117836A JP 1995780 A JP1995780 A JP 1995780A JP 1995780 A JP1995780 A JP 1995780A JP S56117836 A JPS56117836 A JP S56117836A
Authority
JP
Japan
Prior art keywords
punching
metallic sheet
burring
hole
sleeve
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
JP1995780A
Other languages
Japanese (ja)
Inventor
Isao Terada
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 JP1995780A priority Critical patent/JPS56117836A/en
Publication of JPS56117836A publication Critical patent/JPS56117836A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B21D19/088—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for flanging holes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Punching Or Piercing (AREA)

Abstract

PURPOSE: To completely eliminate the occurrence of defectives owing to burring by installing a punching sleeve having a punched hole of a specific diameter into the extruding hole of a supporting base at the time of blanking and burring a metallic sheet.
CONSTITUTION: A metallic sheet A to be worked is placed on the extruding hole 5 of a supporting base 2 for punching, and a burring punch 1 installed above is lowered to punch the metallic sheet A by the punching projection 3 at the end. At this time, a punching sleeve 7 having a punched hole 10 slightly larger than the punching projection 3 is beforehand inserted to the bore of the extruding hole 5. Owing to the presence of the punching sleeve 7, the shearing force upon the metallic sheet A acts effectively, whereby the punching is accomplished surely. By the succeeding lowering of the burring punch 1, the punching sleeve 7 is moved downward as well, and the material around the punched hole of the metallic sheet A plastically deforms in a manner as to be extruded downward, whereby an torus-shaped flange part B is surely formed.
COPYRIGHT: (C)1981,JPO&Japio
JP1995780A 1980-02-20 1980-02-20 Burring device Pending JPS56117836A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1995780A JPS56117836A (en) 1980-02-20 1980-02-20 Burring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1995780A JPS56117836A (en) 1980-02-20 1980-02-20 Burring device

Publications (1)

Publication Number Publication Date
JPS56117836A true JPS56117836A (en) 1981-09-16

Family

ID=12013668

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1995780A Pending JPS56117836A (en) 1980-02-20 1980-02-20 Burring device

Country Status (1)

Country Link
JP (1) JPS56117836A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59118232A (en) * 1982-12-24 1984-07-07 Nissan Motor Co Ltd Burring punch
JPS59153023U (en) * 1983-03-28 1984-10-13 三洋電機株式会社 Burring processing equipment
JPS6046916U (en) * 1983-09-05 1985-04-02 株式会社　タカノ製作所 Mold for piercing burring
EP0891843A2 (en) * 1997-07-17 1999-01-20 MAGNA PEBRA GmbH Cutting tool and method for perforating thermoplastic workpieces
US6109086A (en) * 1999-06-24 2000-08-29 Daimlerchrysler Corporation Punch and method for forming slugless pierced conical extrusions
CN102371308A (en) * 2010-08-16 2012-03-14 佛山市顺德区汉达精密电子科技有限公司 One-step pumped pore structure for stamping die
WO2015115514A1 (en) * 2014-01-29 2015-08-06 新日鐵住金株式会社 Burring method and burring device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59118232A (en) * 1982-12-24 1984-07-07 Nissan Motor Co Ltd Burring punch
JPS59153023U (en) * 1983-03-28 1984-10-13 三洋電機株式会社 Burring processing equipment
JPS6046916U (en) * 1983-09-05 1985-04-02 株式会社　タカノ製作所 Mold for piercing burring
EP0891843A2 (en) * 1997-07-17 1999-01-20 MAGNA PEBRA GmbH Cutting tool and method for perforating thermoplastic workpieces
EP0891843A3 (en) * 1997-07-17 1999-11-24 MAGNA PEBRA GmbH Cutting tool and method for perforating thermoplastic workpieces
US6109086A (en) * 1999-06-24 2000-08-29 Daimlerchrysler Corporation Punch and method for forming slugless pierced conical extrusions
CN102371308A (en) * 2010-08-16 2012-03-14 佛山市顺德区汉达精密电子科技有限公司 One-step pumped pore structure for stamping die
WO2015115514A1 (en) * 2014-01-29 2015-08-06 新日鐵住金株式会社 Burring method and burring device
US10562091B2 (en) 2014-01-29 2020-02-18 Nippon Steel Corporation Burring method and burring apparatus

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