AT248803B - Blechbohrtreibschraube - Google Patents
BlechbohrtreibschraubeInfo
- Publication number
- AT248803B AT248803B AT901961A AT901961A AT248803B AT 248803 B AT248803 B AT 248803B AT 901961 A AT901961 A AT 901961A AT 901961 A AT901961 A AT 901961A AT 248803 B AT248803 B AT 248803B
- Authority
- AT
- Austria
- Prior art keywords
- diameter
- shank
- thread
- sheet metal
- threadless
- Prior art date
Links
- 238000010079 rubber tapping Methods 0.000 title 1
- 239000002184 metal Substances 0.000 claims description 4
- 238000005553 drilling Methods 0.000 claims 3
- 230000007423 decrease Effects 0.000 claims 1
- 230000007704 transition Effects 0.000 claims 1
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
- F16B25/001—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed
- F16B25/0021—Screws that cut thread in the body into which they are screwed, e.g. wood screws characterised by the material of the body into which the screw is screwed the material being metal, e.g. sheet-metal or aluminium
-
- 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
- F16B25/0084—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 geometric details of the tip
-
- 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
- F16B25/10—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws
- F16B25/103—Screws performing an additional function to thread-forming, e.g. drill screws or self-piercing screws by means of a drilling screw-point, i.e. with a cutting and material removing action
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Drilling Tools (AREA)
Description
<Desc/Clms Page number 1> Blechbohrtreib schraube EMI1.1 <Desc/Clms Page number 2> EMI2.1
Claims (1)
- ;PATENTANSPRÜCHE : 1. Blechbohrtreibschraube, die einen Gewindeteil von konstantem äusseren Gewindedurchmesser und eine Bohrspitze mit mindestens einer eine Schneidkante bildenden Längsnut besitzt, dadurch gekennzeichnet, dass an dem Gewindeteil (c) von konstantem äusseren Gewindedurchmesser ein Gewindeteil (d) anschliesst, dessen äusserer Gewindedurchmesser zur Schraubenspitze hin allmählich abnimmt, dass daran ein gewindeloser Schaft (e) anschliesst und dass an diesen die Bohrspitze (f) anschliesst, deren Längsnuten (n) höchstens bis in den genannten gewindelosen Schaft (e) reichen.2. Blechbohrtreibschraube nach Anspruch 1, dadurch gekennzeichnet, dass dergesamte Schaft der Schraube - wie an sich bekannt-gleichen Durchmesser aufweist.3. Blechbohttreibschraube nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Längsnut (n) durch Kaltschlagen, vorzugsweise beim Kaltschlagen der Spitze, hergestellt wird.4. Blechbohrtreibschraube nach Anspruch 1 oder 3, dadurch gekennzeichnet, dass der Schaft in seinem gewindelosen Teil (e) einen kleineren Durchmesser hat als in seinem das Gewinde tra- genden Teil (c), wobei der Übergang vom grösseren zum kleineren Schaftdurchmesser durch eine Verjün- gung (dol) des Schaftes gebildet ist.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEL0037773 | 1960-12-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
AT248803B true AT248803B (de) | 1966-08-25 |
Family
ID=7268029
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT901961A AT248803B (de) | 1960-12-19 | 1961-11-28 | Blechbohrtreibschraube |
Country Status (1)
Country | Link |
---|---|
AT (1) | AT248803B (de) |
-
1961
- 1961-11-28 AT AT901961A patent/AT248803B/de active
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