JPS571537A - Production of sleeve for anchor - Google Patents

Production of sleeve for anchor

Info

Publication number
JPS571537A
JPS571537A JP7470880A JP7470880A JPS571537A JP S571537 A JPS571537 A JP S571537A JP 7470880 A JP7470880 A JP 7470880A JP 7470880 A JP7470880 A JP 7470880A JP S571537 A JPS571537 A JP S571537A
Authority
JP
Japan
Prior art keywords
forming
hole
inside hole
press
working
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
JP7470880A
Other languages
Japanese (ja)
Other versions
JPS5812090B2 (en
Inventor
Mitsuhide Majima
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 JP55074708A priority Critical patent/JPS5812090B2/en
Publication of JPS571537A publication Critical patent/JPS571537A/en
Publication of JPS5812090B2 publication Critical patent/JPS5812090B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Forging (AREA)

Abstract

PURPOSE: To considerably reduce the time required for working and to produce said sleeve efficiently by forming the sleeve of an anchor including an expanded part which is longitudinally split particularly with split grooves through press-forming by backward extrusion.
CONSTITUTION: Straightened end faces 1a, 1b of a blank material 1 are simultaneously subjected to composite extrusion working. A cylindrical expanding part 3 having an inside hole 2 is formed together with such plural split grooves 4 which longitudinally split said part to plural opening pieces 3a to the end face 1a side thereof, and another inside hole 5 is formed on the end face 1b side. Then, such an inside hole 6 which extends the inside hole 2 of the expanding part 3 to the inner side is formed to the blank material 1 which is made into a semiprocessed good by this working, after which the thin excess metallic part 7 between the inside holes 5, 6 is blanked to form an inside hole 8. Here, at above-mentioned forming, the blank material 1 is inserted into a forming hole 12 of a press-forming dies and the leading end part of a press-forming punch 15 is driven into this hole 12, thereby strongly pressing the material 1 axially. Thereby, the part of the material 1 near the stationary punch 13 is extruded forward on account of plastic deformation, and an inside hole 5 is formed by the punch 13.
COPYRIGHT: (C)1982,JPO&Japio
JP55074708A 1980-06-02 1980-06-02 Method for manufacturing anchor sleeves Expired JPS5812090B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55074708A JPS5812090B2 (en) 1980-06-02 1980-06-02 Method for manufacturing anchor sleeves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55074708A JPS5812090B2 (en) 1980-06-02 1980-06-02 Method for manufacturing anchor sleeves

Publications (2)

Publication Number Publication Date
JPS571537A true JPS571537A (en) 1982-01-06
JPS5812090B2 JPS5812090B2 (en) 1983-03-07

Family

ID=13554989

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55074708A Expired JPS5812090B2 (en) 1980-06-02 1980-06-02 Method for manufacturing anchor sleeves

Country Status (1)

Country Link
JP (1) JPS5812090B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103706745A (en) * 2012-10-03 2014-04-09 英钿工业股份有限公司 Manufacturing method of damping shaft sleeve

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5430669A (en) * 1977-08-12 1979-03-07 Hitachi Ltd Washing machine with freeze proofing heater

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5430669A (en) * 1977-08-12 1979-03-07 Hitachi Ltd Washing machine with freeze proofing heater

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103706745A (en) * 2012-10-03 2014-04-09 英钿工业股份有限公司 Manufacturing method of damping shaft sleeve

Also Published As

Publication number Publication date
JPS5812090B2 (en) 1983-03-07

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