DE467912C - Process for the production of safety screw nuts - Google Patents
Process for the production of safety screw nutsInfo
- Publication number
- DE467912C DE467912C DESCH83806D DESC083806D DE467912C DE 467912 C DE467912 C DE 467912C DE SCH83806 D DESCH83806 D DE SCH83806D DE SC083806 D DESC083806 D DE SC083806D DE 467912 C DE467912 C DE 467912C
- Authority
- DE
- Germany
- Prior art keywords
- cylindrical
- partly
- production
- screw nuts
- nut
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G7/00—Forming thread by means of tools similar both in form and in manner of use to thread-cutting tools, but without removing any material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Drilling Tools (AREA)
Description
Sicherheitsschraubenmuttern mit federnden Teilen, die durch unzylindrischen Verlauf des Gewindes sich selbsttätig anpressen, sind bekannt. Die praktische Verwendung derartiger Selbstschlußmuttern scheiterte aber bisher daran, daß die Zuverlässigkeit nur gering war und namentlich nach wiederholtem Ein- und Ausschrauben- nachließ und die Gefahr des Abbrechens von GewindeteilenSafety screw nuts with resilient parts, which are caused by non-cylindrical shape of the thread press themselves automatically, are known. The practical use of such So far, however, self-locking nuts have failed because the reliability was only low, and especially after repeated attempts Screwing in and unscrewing decreased and the risk of thread parts breaking off
ίο immer gegeben war, so daß diese bekannten Muttern der gestellten Aufgabe nicht genügen konnten.ίο was always given, so that this known Nuts could not do the job.
Durch die Erfindung wird eine Mutter geschaffen, die durch eine in geringem Maße vom Zylinder abweichende Form nur wenig Aufweiten der federnden Mutterteile verlangt, dafür aber durch ihre Genauigkeit eine für dauernd sicheres Arbeiten hinreichende Pneßstärke erreicht.The invention creates a mother, which by a small extent A shape deviating from the cylinder requires only a little expansion of the springy nut parts, on the other hand, due to its accuracy, it is sufficient for permanently safe work Pneß strength reached.
Das Verfahren besteht darin, daß1 nach der üblichen Herstellung durch Pressen das Aufreiben der Mutter mit einer teils zylindrisch, teils kegelig ausgebildeten Reibahle geschieht, worauf das Gewinde zylindrisch vorgeschnitten wird. Nach dem zylindrischen Vorschneiden erfolgt das Einsägen der kreuzförmigen Schlitze und dann das genaue Fertigstellen der Schraube durch einen teils zylindrisch, teils kegelig ausgebildeten Gewindebohrer. The method consists in the fact that 1 is according to the conventional production by pressing the reaming of the nut with a partly cylindrically and partly conically formed reamer is pre-cut cylindrical whereupon the thread. After the cylindrical pre-cutting, the cross-shaped slots are sawed in and the screw is then precisely finished using a partly cylindrical, partly conical tap.
Das Verfahren,soll an Hand der Zeichnung eingehender beschrieben werden.The procedure should be described in more detail using the drawing.
Zunächst wird in üblicherweise die Mutter durch Pressen hergestellt. Die zylindrische Bohrung <P hat den engsten Kerndurchmesser des fertiggeschnittenen kegeligen Gewindes.First, the nut is usually produced by pressing. The cylindrical bore <P has the narrowest core diameter of the finished, tapered thread.
Nach dem Entgraten werden nötigenfalls die Auflagefläche und die obere kugelförmige Fläche nachgearbeitet.After deburring, if necessary, the bearing surface and the upper one are spherical Refinished surface.
Nun wird die Bohrung mit einer teils zylindrischen, teils kegeligen Reibahle aufgerieben, so daß die Form nach Abb. 2 mit der zunächst zylindrischen, dann kegeligen Bohrung d1 entsteht. Darauf wird ein zylindrisches Gewinde d2 eingeschnitten, wie aus Abb. 3 hervorgeht, und nun wird die Mutter auf der Schlitzmaschine im kegelförmigen Teil· kreuzförmig eingesägt (Abb. 4). Die letzte Arbeit ist das Fertigschneiden des Gewindes mit dem eigentümlichen kegeligen Gewindefertigbohrer e (Abb. 6), dessen zylindrischer Außendurchmesser gleich d ist. Zur Herstellung der genauen Kegelform benutzt man eine Gewindeschneidmaschine mit selbsttätiger Auslösung und Rückgang. Der Schnitt durch die fertige Mütter ist aus Abb. 5 zu ersehen.Now the bore is reamed with a partly cylindrical, partly conical reamer, so that the shape according to Fig. 2 with the initially cylindrical, then conical bore d 1 is created. A cylindrical thread d 2 is cut on it, as can be seen from Fig. 3, and the nut is now sawn in the conical part in a cross shape on the slotting machine (Fig. 4). The last job is to finish cutting the thread with the peculiar tapered tapping drill e (Fig. 6), the cylindrical outer diameter of which is equal to d. A thread cutting machine with automatic release and retraction is used to produce the exact cone shape. The section through the finished mother can be seen in Fig. 5.
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH83806D DE467912C (en) | 1927-09-10 | 1927-09-10 | Process for the production of safety screw nuts |
DE1930SC005930 DE541880C (en) | 1927-09-10 | 1930-07-17 | Process for the production of cylindrically conical nuts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DESCH83806D DE467912C (en) | 1927-09-10 | 1927-09-10 | Process for the production of safety screw nuts |
Publications (1)
Publication Number | Publication Date |
---|---|
DE467912C true DE467912C (en) | 1928-11-02 |
Family
ID=7442815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DESCH83806D Expired DE467912C (en) | 1927-09-10 | 1927-09-10 | Process for the production of safety screw nuts |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE467912C (en) |
-
1927
- 1927-09-10 DE DESCH83806D patent/DE467912C/en not_active Expired
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