The difference and application of nut making machine and bolt making machine
Nut making machines and bolt making machines differ significantly in structural design, process flow, and applicable scenarios, primarily serving the production of different types of fasteners.
**Structural Design Differences:** Nut cold heading machines typically employ a short-stroke design, equipped with a transfer device to achieve part flipping, accommodating their "short and stout" geometry and through-hole structure. Bolt cold heading machines, on the other hand, are mostly long-stroke designs, with parts transferred between stations via a moving device, suitable for forming "long and thin" bolts.
**Process Flow Differences:** Nut production primarily uses reverse extrusion, requiring piercing the material to form a through hole, and relying on taps to machine the thread; bolts mostly use forward extrusion, with thread machining typically completed through thread rolling.
**Application Scenarios:** Nut cold heading machines are suitable for mass production of standard nuts, especially for locking nuts with side or top locking designs; bolt cold heading machines are mainly used for the efficient forming of bolts, screws, and other externally threaded fasteners.