JPS54109056A - Expanding tool for hollow billet - Google Patents

Expanding tool for hollow billet

Info

Publication number
JPS54109056A
JPS54109056A JP1696378A JP1696378A JPS54109056A JP S54109056 A JPS54109056 A JP S54109056A JP 1696378 A JP1696378 A JP 1696378A JP 1696378 A JP1696378 A JP 1696378A JP S54109056 A JPS54109056 A JP S54109056A
Authority
JP
Japan
Prior art keywords
hole
expansion
tool
expanding
main part
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
JP1696378A
Other languages
Japanese (ja)
Other versions
JPS596724B2 (en
Inventor
Kaname Hamada
Kazunobu Imamura
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 JP1696378A priority Critical patent/JPS596724B2/en
Publication of JPS54109056A publication Critical patent/JPS54109056A/en
Publication of JPS596724B2 publication Critical patent/JPS596724B2/en
Expired 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
    • B21J9/00—Forging presses
    • B21J9/02—Special design or construction
    • B21J9/04—Piercing presses
    • 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
    • B21J5/10—Piercing billets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Forging (AREA)

Abstract

PURPOSE:To start the expansion of the hole with the optimum metal flow, to expand the hole into a specified diameter making superior the property of the internal surface, and to extremely improve the durability of the tool, by improving the shape of the tool at the starting part and following main part for the expanding work of the hole. CONSTITUTION:The expanding tool 10 consists of the tapered down type hole expanding part 11 and the cylindrical guide part 12 continuing to the lower end. The hole expanding part 11 consists of the truncated cone type main part 14 for the hole expansion and the starting part 15 for the hole expansion continuing to the front of the main part 14. The curved part 16 is swelling type and the curved part 17 is sinking type. The cylindrical guide part 12 is straight in the longitudinal direction of the cylinder, and its spearhead is made round 18. At first the starting part 15 for the hole expansion begins the expanding work for the hole at the optimum metal flow, and then, truncated cone type main part 14 for the hole expansion successively works the expansion as far as the specified hole diameter; as a result, the hole expansion is carried out without causing deterioration of the durability of the tool due to the seizing of the tool, and without causing degradation of the internal surface property of the hollow metallic billet.
JP1696378A 1978-02-14 1978-02-14 Holobilet expansion tool Expired JPS596724B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1696378A JPS596724B2 (en) 1978-02-14 1978-02-14 Holobilet expansion tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1696378A JPS596724B2 (en) 1978-02-14 1978-02-14 Holobilet expansion tool

Publications (2)

Publication Number Publication Date
JPS54109056A true JPS54109056A (en) 1979-08-27
JPS596724B2 JPS596724B2 (en) 1984-02-14

Family

ID=11930749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1696378A Expired JPS596724B2 (en) 1978-02-14 1978-02-14 Holobilet expansion tool

Country Status (1)

Country Link
JP (1) JPS596724B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619327A1 (en) * 1987-08-13 1989-02-17 Ardt TOOL STAGE FOR DRILLING A HOLE IN A WORKPIECE BY AXIAL FEEDING OF THE TOOL
CN103071693A (en) * 2012-12-25 2013-05-01 包进平 Extrusion needle and extrusion method for large-specification thin-walled pipe or hollow profile

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0248824U (en) * 1988-09-29 1990-04-04
US9267184B2 (en) 2010-02-05 2016-02-23 Ati Properties, Inc. Systems and methods for processing alloy ingots
US10207312B2 (en) 2010-06-14 2019-02-19 Ati Properties Llc Lubrication processes for enhanced forgeability
US8789254B2 (en) * 2011-01-17 2014-07-29 Ati Properties, Inc. Modifying hot workability of metal alloys via surface coating

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2619327A1 (en) * 1987-08-13 1989-02-17 Ardt TOOL STAGE FOR DRILLING A HOLE IN A WORKPIECE BY AXIAL FEEDING OF THE TOOL
US4966023A (en) * 1987-08-13 1990-10-30 Agence Regionale De Developpements Technologiques Staged tool for boring a hole in an element by axial penetration of the tool
CN103071693A (en) * 2012-12-25 2013-05-01 包进平 Extrusion needle and extrusion method for large-specification thin-walled pipe or hollow profile

Also Published As

Publication number Publication date
JPS596724B2 (en) 1984-02-14

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