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FR2378973A1 - SELF-TAPPING SCREW, ITS MANUFACTURING PROCESS AND ROLLING JAW FOR THE IMPLEMENTATION OF THIS PROCESS - Google Patents

SELF-TAPPING SCREW, ITS MANUFACTURING PROCESS AND ROLLING JAW FOR THE IMPLEMENTATION OF THIS PROCESS

Info

Publication number
FR2378973A1
FR2378973A1 FR7801956A FR7801956A FR2378973A1 FR 2378973 A1 FR2378973 A1 FR 2378973A1 FR 7801956 A FR7801956 A FR 7801956A FR 7801956 A FR7801956 A FR 7801956A FR 2378973 A1 FR2378973 A1 FR 2378973A1
Authority
FR
France
Prior art keywords
self
implementation
tapping screw
manufacturing process
rolling jaw
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
FR7801956A
Other languages
French (fr)
Other versions
FR2378973B1 (en
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.)
SCHUMACHER WILHELM KG
Original Assignee
SCHUMACHER WILHELM KG
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 SCHUMACHER WILHELM KG filed Critical SCHUMACHER WILHELM KG
Publication of FR2378973A1 publication Critical patent/FR2378973A1/en
Application granted granted Critical
Publication of FR2378973B1 publication Critical patent/FR2378973B1/fr
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0047—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge being characterised by its cross-section in the plane of the shaft axis
    • 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
    • B21H3/027—Rolling of self-tapping screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B25/00—Screws that cut thread in the body into which they are screwed, e.g. wood screws
    • F16B25/0036—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw
    • F16B25/0042—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw
    • F16B25/0052—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by geometric details of the screw characterised by the geometry of the thread, the thread being a ridge wrapped around the shaft of the screw the ridge having indentations, notches or the like in order to improve the cutting behaviour

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Forging (AREA)
  • Pinball Game Machines (AREA)
  • Refuse Collection And Transfer (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

Vis autotaraudeuse, son procédé de fabrication et mâchoire de roulage pour mettre en oeuvre ce procédé. Le noyau du fût de la vis a une section circulaire et comporte, de façon connue en soi, des portions de son pourtour qui sont en forme de lignes ou de bandes; selon l'invention, ces portions, dans lesquelles le profil a une plus grande hauteur, sont superposées aux filets de vis 15 en entourant le fût suivant une hélicoïde, la plus grande hauteur étant créée par des bourrelets ou mamelons 16 formés sur les flancs et les sommets de ces filets. Application : fabrication de vis autotaraudeuses.Self-tapping screw, its manufacturing process and rolling jaw to implement this process. The core of the shank of the screw has a circular section and comprises, in a manner known per se, portions of its periphery which are in the form of lines or bands; according to the invention, these portions, in which the profile has a greater height, are superimposed on the screw threads 15 by surrounding the shank in a helicoidal direction, the greater height being created by beads or nipples 16 formed on the sides and the tops of these nets. Application: manufacture of self-tapping screws.

FR7801956A 1977-01-28 1978-01-20 SELF-TAPPING SCREW, ITS MANUFACTURING PROCESS AND ROLLING JAW FOR THE IMPLEMENTATION OF THIS PROCESS Granted FR2378973A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19772703433 DE2703433A1 (en) 1977-01-28 1977-01-28 THREAD FORMING SCREW AND METHOD OF MANUFACTURING THE SAME AND ROLLING JAW FOR PERFORMING THE METHOD

Publications (2)

Publication Number Publication Date
FR2378973A1 true FR2378973A1 (en) 1978-08-25
FR2378973B1 FR2378973B1 (en) 1985-01-04

Family

ID=5999735

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7801956A Granted FR2378973A1 (en) 1977-01-28 1978-01-20 SELF-TAPPING SCREW, ITS MANUFACTURING PROCESS AND ROLLING JAW FOR THE IMPLEMENTATION OF THIS PROCESS

Country Status (14)

Country Link
AT (1) AT362626B (en)
BE (1) BE863419A (en)
CH (1) CH632321A5 (en)
DE (1) DE2703433A1 (en)
DK (1) DK148545C (en)
ES (1) ES238409Y (en)
FI (1) FI68539C (en)
FR (1) FR2378973A1 (en)
GB (1) GB1568801A (en)
IT (1) IT1092132B (en)
NL (1) NL184127C (en)
NO (1) NO146507C (en)
PT (1) PT67580B (en)
SE (1) SE434295B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4811585A (en) * 1986-04-02 1989-03-14 Nissan Motor Co., Ltd. Device for forming asymmetrical articles by rolling
GB8819820D0 (en) * 1988-08-20 1988-09-21 Tucker Fasteners Ltd Anchors for fixing to dense concrete masonry &c
DE4131165A1 (en) * 1991-09-19 1993-03-25 Schumacher Wilhelm Kg THREAD-FORMING SCREW AND METHOD FOR PRODUCING THE SAME AND ROLLING JAWS FOR CARRYING OUT THE METHOD
DE102005041586A1 (en) * 2005-09-01 2007-03-08 Ejot Gmbh & Co. Kg Thread-forming screw
DE202010015839U1 (en) * 2010-11-26 2011-02-24 Acument Gmbh & Co. Ohg Self-locking thread
DE102020130085B3 (en) 2020-11-13 2022-04-28 Essence Method Refine Co., Ltd. METHOD OF MAKING A MULTIFUNCTIONAL FASTENING ELEMENT

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2241716A1 (en) * 1973-08-22 1975-03-21 Mite Corp

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1400838A1 (en) * 1961-04-03 1968-11-14 Jllinois Tool Works Inc Fastener
US3426642A (en) * 1962-02-05 1969-02-11 Res Eng & Mfg Self-tapping screws with threadforming projections
GB1219237A (en) * 1969-04-08 1971-01-13 Leon Simons Vibration-resistant screw
ZA71559B (en) * 1970-01-30 1972-03-29 Nat Lead Co Thread-rolling method,thread-rolling dies,and method of manufacturing the dies
GB1308413A (en) * 1970-07-14 1973-02-21 Nl Industries Inc Vibration-resistant thread-forming screw
CA977192A (en) * 1972-05-24 1975-11-04 Usm Corporation Self tapping fastener and method and dies for making same
US3935785A (en) * 1974-01-03 1976-02-03 Rockford Headed Products, Inc. Thread swaging screw
US4046051A (en) * 1974-11-14 1977-09-06 Industrial Fasteners Corporation Thread forming screw

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2241716A1 (en) * 1973-08-22 1975-03-21 Mite Corp

Also Published As

Publication number Publication date
ES238409Y (en) 1979-04-01
GB1568801A (en) 1980-06-04
NO774469L (en) 1978-07-31
NL184127C (en) 1989-04-17
DK24678A (en) 1978-07-29
PT67580B (en) 1979-06-20
SE434295B (en) 1984-07-16
DK148545B (en) 1985-07-29
ATA59978A (en) 1980-10-15
ES238409U (en) 1978-11-16
IT7819638A0 (en) 1978-01-26
IT1092132B (en) 1985-07-06
FI780224A7 (en) 1978-07-29
NL7800519A (en) 1978-08-01
BE863419A (en) 1978-05-16
DE2703433A1 (en) 1978-12-07
AT362626B (en) 1981-06-10
CH632321A5 (en) 1982-09-30
NL184127B (en) 1988-11-16
PT67580A (en) 1978-02-01
NO146507B (en) 1982-07-05
DE2703433C2 (en) 1988-11-03
FI68539C (en) 1985-10-10
SE7800519L (en) 1978-07-29
NO146507C (en) 1982-10-13
DK148545C (en) 1986-04-07
FI68539B (en) 1985-06-28
FR2378973B1 (en) 1985-01-04

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