EP1162014A3 - Pressure controlled fluid pressure extrusion method - Google Patents

Pressure controlled fluid pressure extrusion method Download PDF

Info

Publication number
EP1162014A3
EP1162014A3 EP01304835A EP01304835A EP1162014A3 EP 1162014 A3 EP1162014 A3 EP 1162014A3 EP 01304835 A EP01304835 A EP 01304835A EP 01304835 A EP01304835 A EP 01304835A EP 1162014 A3 EP1162014 A3 EP 1162014A3
Authority
EP
European Patent Office
Prior art keywords
die
pressure
fluid
seal
forms
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
EP01304835A
Other languages
German (de)
French (fr)
Other versions
EP1162014A2 (en
EP1162014B1 (en
Inventor
Hisanobu Kanamaru
Kazub Kobayashi
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.)
Aida Engineering Ltd
Original Assignee
Aida Engineering 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 Aida Engineering Ltd filed Critical Aida Engineering Ltd
Publication of EP1162014A2 publication Critical patent/EP1162014A2/en
Publication of EP1162014A3 publication Critical patent/EP1162014A3/en
Application granted granted Critical
Publication of EP1162014B1 publication Critical patent/EP1162014B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
    • B21J5/12—Forming profiles on internal or external surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/007—Hydrostatic extrusion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/02—Making uncoated products
    • B21C23/04—Making uncoated products by direct extrusion
    • B21C23/08—Making wire, bars, tubes
    • B21C23/10—Making finned tubes
    • 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
    • B21J5/04—Methods for forging, hammering, or pressing; Special equipment or accessories therefor by directly applied fluid pressure or explosive action
    • 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
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/066—Making machine elements axles or shafts splined
    • 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
    • B21K1/00—Making machine elements
    • B21K1/06—Making machine elements axles or shafts
    • B21K1/12—Making machine elements axles or shafts of specially-shaped cross-section
    • 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
    • B21K1/00—Making machine elements
    • B21K1/28—Making machine elements wheels; discs
    • B21K1/30—Making machine elements wheels; discs with gear-teeth

Abstract

The lower part of a material blank to be molded forms a lower seal (9) with a die (2). A punch (3) applying a molding force to the material forms an upper seal (7) with the perimeter of the die. The space between the upper and lower seals (9) forms a pressure chamber (6) that is filled with a fluid. As the punch descends into the die, the fluid is pressurized. The lower seal (9) is a complete seal to prevent leakage of fluid into the die. The upper seal is given a clearance with the die that permits controlled leakage of fluid therepast at a rate that limits the maximum pressure in the pressure chamber while permitting the development of an adequate pressure on the material being molded.
EP01304835A 2000-06-09 2001-06-01 Pressure controlled fluid pressure extrusion method Expired - Lifetime EP1162014B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000173006 2000-06-09
JP2000173006A JP3707768B2 (en) 2000-06-09 2000-06-09 Pressure control hydraulic extrusion method

Publications (3)

Publication Number Publication Date
EP1162014A2 EP1162014A2 (en) 2001-12-12
EP1162014A3 true EP1162014A3 (en) 2002-07-24
EP1162014B1 EP1162014B1 (en) 2005-03-23

Family

ID=18675310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01304835A Expired - Lifetime EP1162014B1 (en) 2000-06-09 2001-06-01 Pressure controlled fluid pressure extrusion method

Country Status (5)

Country Link
US (1) US20010049955A1 (en)
EP (1) EP1162014B1 (en)
JP (1) JP3707768B2 (en)
CA (1) CA2343685C (en)
DE (1) DE60109519T2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101449270B1 (en) * 2013-04-17 2014-10-10 한국생산기술연구원 Method for manufacturing extruded helical gear having postprocess of extruded helical gear
TWI622490B (en) * 2014-10-21 2018-05-01 王正平 Fine extru-cutting forming machine
TWI722949B (en) * 2020-07-30 2021-03-21 瑋瑩實業有限公司 Twill molding die structure for riveting nut

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3382691A (en) * 1964-07-31 1968-05-14 Atomic Energy Authority Uk Hydrostatic extrusion processes
GB1215452A (en) * 1967-02-02 1970-12-09 Atomic Energy Authority Uk Improvements in or relating to hydrostatic extrusion apparatus
US3765222A (en) * 1971-12-30 1973-10-16 Asea Ab Die for hydrostatic extrusion of sections having elongated projections
US3983730A (en) * 1971-08-16 1976-10-05 Battelle Memorial Institute Method of hydrostatic extrusion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3382691A (en) * 1964-07-31 1968-05-14 Atomic Energy Authority Uk Hydrostatic extrusion processes
GB1215452A (en) * 1967-02-02 1970-12-09 Atomic Energy Authority Uk Improvements in or relating to hydrostatic extrusion apparatus
US3983730A (en) * 1971-08-16 1976-10-05 Battelle Memorial Institute Method of hydrostatic extrusion
US3765222A (en) * 1971-12-30 1973-10-16 Asea Ab Die for hydrostatic extrusion of sections having elongated projections

Also Published As

Publication number Publication date
JP2001347336A (en) 2001-12-18
DE60109519D1 (en) 2005-04-28
DE60109519T2 (en) 2006-04-13
EP1162014A2 (en) 2001-12-12
CA2343685A1 (en) 2001-12-09
US20010049955A1 (en) 2001-12-13
CA2343685C (en) 2006-07-04
EP1162014B1 (en) 2005-03-23
JP3707768B2 (en) 2005-10-19

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