JPS57209738A - Manufacture of anchor for concrete - Google Patents

Manufacture of anchor for concrete

Info

Publication number
JPS57209738A
JPS57209738A JP9615181A JP9615181A JPS57209738A JP S57209738 A JPS57209738 A JP S57209738A JP 9615181 A JP9615181 A JP 9615181A JP 9615181 A JP9615181 A JP 9615181A JP S57209738 A JPS57209738 A JP S57209738A
Authority
JP
Japan
Prior art keywords
hole
diameter hole
round rod
holes
forming
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
JP9615181A
Other languages
Japanese (ja)
Other versions
JPH0252578B2 (en
Inventor
Sueaki Ogawa
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 JP9615181A priority Critical patent/JPS57209738A/en
Publication of JPS57209738A publication Critical patent/JPS57209738A/en
Publication of JPH0252578B2 publication Critical patent/JPH0252578B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B21K1/76—Making machine elements elements not mentioned in one of the preceding groups

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rock Bolts (AREA)
  • Forging (AREA)

Abstract

PURPOSE:To eliminate loss of material for concrete anchor and reduce time of forming by forming holes of different diameter on both ends of a round rod-like material, communicating the two, and forming a slanted hole by a tapered punch. CONSTITUTION:As a preliminary process, shallow concavities 2, 3 are formed by forging on both end faces of a round rod-like material of specified diameter cut to a specified length using a former. As the first process, holes 5, 6 of different diameter are formed by deep drawing from both end faces of the material 1 that passed through the preliminary process. As the second process, a round rod-like punch having the same diameter with the small diameter hole 5 is inserted into the large diameter hole 6 and remaining part between the two holes are penetrated to make the small diameter hole 5 and large diameter hole 6 communicating. As the third process, the small diameter hole 5 is formed to a slanted hole 8 and at the same time, a knurling tool 11 is provided. Finally, as the finishing process, a cut groove 9 extending in axial direction is worked at the tip. At the same time, internal thread 10 is machined in the large diameter hole 6.
JP9615181A 1981-06-22 1981-06-22 Manufacture of anchor for concrete Granted JPS57209738A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9615181A JPS57209738A (en) 1981-06-22 1981-06-22 Manufacture of anchor for concrete

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9615181A JPS57209738A (en) 1981-06-22 1981-06-22 Manufacture of anchor for concrete

Publications (2)

Publication Number Publication Date
JPS57209738A true JPS57209738A (en) 1982-12-23
JPH0252578B2 JPH0252578B2 (en) 1990-11-14

Family

ID=14157372

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9615181A Granted JPS57209738A (en) 1981-06-22 1981-06-22 Manufacture of anchor for concrete

Country Status (1)

Country Link
JP (1) JPS57209738A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5582057A (en) * 1993-12-24 1996-12-10 Hilti Aktiengesellschaft Method for forming an expansion sleeve for an expansion dowel

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4330038Y1 (en) * 1966-03-24 1968-12-09
JPS4841833A (en) * 1971-09-28 1973-06-19
JPS5152360A (en) * 1974-11-01 1976-05-08 Daido Steel Co Ltd SAKUSHUTSUTANZOHOHO
JPS5389851A (en) * 1977-01-19 1978-08-08 Honda Motor Co Ltd Cold stamping and molding apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4330038Y1 (en) * 1966-03-24 1968-12-09
JPS4841833A (en) * 1971-09-28 1973-06-19
JPS5152360A (en) * 1974-11-01 1976-05-08 Daido Steel Co Ltd SAKUSHUTSUTANZOHOHO
JPS5389851A (en) * 1977-01-19 1978-08-08 Honda Motor Co Ltd Cold stamping and molding apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5582057A (en) * 1993-12-24 1996-12-10 Hilti Aktiengesellschaft Method for forming an expansion sleeve for an expansion dowel

Also Published As

Publication number Publication date
JPH0252578B2 (en) 1990-11-14

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