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FR1179520A - Device for forming screw threads by recess - Google Patents

Device for forming screw threads by recess

Info

Publication number
FR1179520A
FR1179520A FR1179520DA FR1179520A FR 1179520 A FR1179520 A FR 1179520A FR 1179520D A FR1179520D A FR 1179520DA FR 1179520 A FR1179520 A FR 1179520A
Authority
FR
France
Prior art keywords
recess
screw threads
forming screw
forming
threads
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
Other languages
French (fr)
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.)
Devlieg Bullard Inc
Original Assignee
National Acme Co
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 National Acme Co filed Critical National Acme Co
Application granted granted Critical
Publication of FR1179520A publication Critical patent/FR1179520A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21H—MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
    • B21H3/00—Making helical bodies or bodies having parts of helical shape
    • B21H3/02—Making helical bodies or bodies having parts of helical shape external screw-threads ; Making dies for thread rolling
    • B21H3/04—Making by means of profiled-rolls or die rolls
    • B21H3/042—Thread-rolling heads
    • B21H3/046—Thread-rolling heads working radially

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
FR1179520D 1956-10-17 1957-07-01 Device for forming screw threads by recess Expired FR1179520A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1179520XA 1956-10-17 1956-10-17

Publications (1)

Publication Number Publication Date
FR1179520A true FR1179520A (en) 1959-05-26

Family

ID=22375709

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1179520D Expired FR1179520A (en) 1956-10-17 1957-07-01 Device for forming screw threads by recess

Country Status (1)

Country Link
FR (1) FR1179520A (en)

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