ES380326A1 - Recessed rivet mfe - by two-punch appts - Google Patents

Recessed rivet mfe - by two-punch appts

Info

Publication number
ES380326A1
ES380326A1 ES380326A ES380326A ES380326A1 ES 380326 A1 ES380326 A1 ES 380326A1 ES 380326 A ES380326 A ES 380326A ES 380326 A ES380326 A ES 380326A ES 380326 A1 ES380326 A1 ES 380326A1
Authority
ES
Spain
Prior art keywords
punch
rivet
head
mfe
appts
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.)
Expired
Application number
ES380326A
Other languages
Spanish (es)
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 ES380326A priority Critical patent/ES380326A1/en
Priority to DE19712127325 priority patent/DE2127325A1/en
Publication of ES380326A1 publication Critical patent/ES380326A1/en
Expired 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
    • B21K1/58—Making machine elements rivets
    • B21K1/60—Making machine elements rivets hollow or semi-hollow rivets

Landscapes

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

Abstract

Manufacture for recessed rivets comprises (1). - The wire or rod shaped cut-off blank is introduced into the dia. contacting a punch in its bore. - (2) The head of the rivet is partially formed by a blow delivered by a punch in front of the die pressing the constrained end of blank lightly against the inner punch. - Pref. this is followed by a second blow from the front when the head is formed in its final form, after which, with the rivet still held in place by the punch in front, the punch in the rear is blown inwards resulting in forming of the recess whence the finished rivet may be ejected at the front after retraction of the head punch. - The process is simple and uses a minimal number of process steps.
ES380326A 1970-06-02 1970-06-02 Recessed rivet mfe - by two-punch appts Expired ES380326A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
ES380326A ES380326A1 (en) 1970-06-02 1970-06-02 Recessed rivet mfe - by two-punch appts
DE19712127325 DE2127325A1 (en) 1970-06-02 1971-06-02 Recessed rivet mfe - by two-punch appts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES380326A ES380326A1 (en) 1970-06-02 1970-06-02 Recessed rivet mfe - by two-punch appts

Publications (1)

Publication Number Publication Date
ES380326A1 true ES380326A1 (en) 1972-09-01

Family

ID=8456030

Family Applications (1)

Application Number Title Priority Date Filing Date
ES380326A Expired ES380326A1 (en) 1970-06-02 1970-06-02 Recessed rivet mfe - by two-punch appts

Country Status (2)

Country Link
DE (1) DE2127325A1 (en)
ES (1) ES380326A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112008032B (en) * 2019-05-31 2022-05-20 宾科精密部件(中国)有限公司 Extrusion forming method and forming device for self-fastening I-shaped rivet

Also Published As

Publication number Publication date
DE2127325A1 (en) 1971-12-16

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