Sechskantmuttern und -bolzen

Sechskantmuttern und -schrauben

sind die grundlegendsten Verbindungselemente in der mechanischen Verbindungstechnik. Ihre Funktionen, Anwendungen, Herstellungsverfahren und Verriegelungsprinzipien sind wie folgt:

1. wo die Rolle:

1.1 Mechanical connection:

two or more components are fastened together through a threaded fit to withstand static or dynamic loads.

1.2 Locking and sealing:

The combination of nut and nylon can play a sealing or component positioning role.

2. Anwendungsbereich

2.1 General mechanical connections:

mechanical assemblies and equipment, steel structures (such as Bridges, buildings).

2.2 Construction machinery/automobile:

engine, chassis, gearbox.

2.3 Transportation track:

high-strength anti-corrosion anti-tension firmware.

2.4 Electronic appliances:

micro precision nuts.

2.5 Home furniture:

DIY assembly, hardware connection.

3.Gewinde Standard

Application field

3.1. Metrisches Gewinde

Normensystem: ISO (international), GB (China), DIN (Deutschland), JIS (Japan).
Code: M (z. B. M6, M8×1,25, 6 ist der Nenndurchmesser, 1,25 ist die Teilung).
Zahnwinkel: 60°, grobe Verzahnung (Standard) und feine Verzahnung (Hochpräzisionsszenario), auf der Zeichnung speziell gekennzeichnet.

3.2. KaisergewindeStandard-System:

UNC (Unified Coarse Thread) : Grobe Zähne, starke Vielseitigkeit (z.B. #10-24).
UNF (Unified Fine Thread) : Feingewinde, vibrationshemmend (z.B. 1/4″-28).
BSW (British Standard Whitworth) : Britischer Standard, 55° Zahnwinkel.
Code: in Zoll (z. B. 1/2″-13, was 1/2 Zoll Durchmesser, 13 Zähne/Zoll bedeutet).

3.3. Amerikanisches Gewinde (ANSI/ASME)

Normen: ANSI B1.1 (Einheitsgewinde), ANSI B1.20.1 (Rohrgewinde NPT).
Merkmale: Ähnlich wie das britische System, aber stärker segmentiert.

3.4. Rohrgewinde

NPT (amerikanisches kegeliges Rohrgewinde) : Dichtung, Zahnwinkel 60°, Kegel 1:16.
G/BSP (zölliges gerades/konisches Rohrgewinde) : 55° Verzahnung, unterteilt in G (parallel) und R (konisch).
Anwendung: hydraulische Rohrleitungen, pneumatische Systeme.

Specific drawings or technical parameters,
with the tolerance zone, and with the corresponding stop-stop gauge measurement and inspection, because the screw is directly determined the tightness, and even the risk of oil leakage!

4. das Herstellungsverfahren

4.1 Bolzenherstellung:

4.11 Cold heading molding (mainstream process) :

cold extrusion molding of wire with mold, high efficiency, low cost, suitable for large batch, standard parts production, because the mold cost is high;

4.12 Turning processing:

for large size or non-standard bolts, or high-precision requirements, or not suitable for cold heading materials, because of the high cost of precision machining;

4.2 Herstellung von Nüssen:

4.21 Cold heading or hot forging:

the hexagonal shape is formed by the mold, and the internal thread is tapped or extruded;

4.22 Thread processing:

thread rolling (high-speed rolling) and turning methods;

4.23 Pure machining method:

nuts with small quantity or abnormity requirements;

4.24 Nylon nut:

with high toughness and nylon (processed to a certain size),

5. Verfahren der Oberflächenbehandlung

5.1 Galvanizing:

Ordinary galvanizing is the most common, low cost, but general rust prevention (need passivation treatment), and not environmentally friendly; Trivalent zinc is environmentally friendly, but the cost will be higher than ordinary galvanizing.

5.2 Hot dip galvanizing:

thick zinc layer, there is a hidden danger of hydrogen embrittance, mainly used for outdoor steel structure, corrosion resistance is stronger than electric galvanizing.

5.3 Dacromet:

no hydrogen embrittlement, high temperature corrosion resistance, resistance to high salinity seawater corrosion, so the application is mainly in the harsh sea, plateau, high humidity environment.

5.4 Oxidation black:

beautiful, easy to flower and rust prevention ability is weak, often used in tool products.

5.5 Phosphating:

chemical reaction, can improve wear resistance, often used with anti-rust oil.

6.das Prinzip und die Bedeutung der Verriegelung

6.1 Locking Mechanism

6.11 Reibschluss:

Nylon Insert Lock Nut (Nylon Insert Lock Nut) :the nut is embedded in a nylon ring, which causes elastic deformation and increases friction when screwed in.

6.12 Butterfly self-locking washer:

It is an elastic preload anti-loosening, the washer is compressed during installation, producing axial elastic recovery force, so that the bolt/nut is always subjected

to additional compression force, when the connector is slightly loosened due to vibration, the elastic energy of the washer will compensate for the loss of preload

and maintain the fastening state; In addition, the sawtooth structure at this time plays a more important role, so that the loosening tension is always less than the

height of the sawtooth, to achieve the anti-loosening effect.

7, Gewinde-Erkennung: durch die Lehre (GO/NO-GO), Drei-Pin-Messverfahren (Präzisions-Gewinde).

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