What are the differences between single-drum rivets and double-drum rivets in application scenarios?

Complete distinction between single-drum rivet vs double-drum rivet application scenarios

First, the core structure and performance of the underlying differences

Single-drum rivet: only one integral bulge is formed on the back after riveting, and it is clamped at a single point; Narrow clamping range and small tolerance of fixed thickness; The foundation is tensile and shear resistant, and moderately earthquake resistant; The cost is lower and the universality is strong.

Double-drum rivet: pulling and riveting to form two sections of double drums, which are clamped at two points; Wide clamping range, which can compensate for large aperture, interlayer gap and thickness fluctuation; Double supporting surfaces, tensile/shear/fatigue resistance, earthquake resistance and loosening prevention are much better than single drum; Suitable for multi-layer, soft and brittle plates and strong vibration conditions.

Second, the single-drum rivet is suitable for the scene (light load, uniform thickness, low vibration and cost control)

1. Electronic, electrical and sheet equipment (0.5–3 mm uniform sheet)

Server cabinet, distribution box, instrument shell, router/set-top box shell

Thin aluminum, thin galvanized sheet and plastic shell are statically connected without violent vibration.

Advantages: the bulge is evenly stressed and it is not easy to crush the thin plate; Ordinary riveting guns can be assembled in large quantities with high cost performance.

2. Furniture, doors and windows, light industry decoration (static load)

Aluminum alloy door and window frames, cabinets, metal display racks, advertising aluminum signs, sun room non-load-bearing frames.

Table and chair hardware, kitchenware accessories, luggage, light support for fitness equipment.

Working conditions: no impact, weak vibration, uniform plate thickness and small assembly gap (≤0.5mm).

3. Non-stressed parts of automobile/rail transit interior

Door trim panel, instrument cover, ceiling, sound insulation cotton and plastic trim panel are fixed.

Only static decoration is fixed, and it does not bear the continuous vibration transmitted by chassis and engine.

4. General light sheet metal and conventional structural parts

Ordinary ventilation pipes, light shelves, small equipment shields, high assembly accuracy, uniform thickness, budget priority batch production line.

Single drum scene summary keywords

Uniform thickness, small gap, static/slight vibration, uniform material of thin plates, and low-cost assembly in large quantities.

Three, double drum rivet application scenarios (heavy load, multilayer, large gap, strong vibration, soft and brittle composite plate)

1. Automobile, construction machinery and agricultural machinery (high-frequency vibration+impact)

Automobile chassis, engine bracket, suspension connecting rod, freight car body sheet metal, new energy battery pack shell.

Vibration parts of excavators, loaders, tractor gearboxes and harvesters.

Core advantages: double drum double self-locking, absorbing continuous vibration, not loosening after long-term use; It can compensate the errors of ellipse and large aperture of stamping hole.

2. Rail transit, ships and outdoor heavy equipment

High-speed rail/subway car, door guide mechanism, chassis damping connector

Ship interior, offshore equipment, chemical anti-corrosion equipment, container, ventilation heavy air duct.

Wet, salt spray, continuous bumpy environment, requiring high fatigue life, slight sealing, dustproof and waterproof.

3. Workpieces with multi-layered plates, mixed thickness and large thickness fluctuation

2-4 layers of metal overlay, aluminum plate+plastic, glass fiber composite, thick and thin plate splicing.

The tolerance of incoming material thickness is large, and the gap between punching holes is > ＞0.5mm, so it is easy to have virtual riveting stations.

The double drums are deformed in sections, and the two layers of plates are pressed by the bulges respectively, so as to prevent the gaps between the layers and the abnormal sliding sound.

4. Soft/brittle materials (plastic, glass fiber, thin aluminum, composite materials)

Plastic shell of household appliances, power tool shell, medical equipment, elevator decoration sheet; Double drum disperses the pressure, which will not fracture and collapse the soft plate, which is better than single drum.

5. Load-bearing structure with high requirements for connection strength and locking reliability.

Generator, compressor base, heavy equipment rack, bus body bearing sheet metal, long-term alternating load working condition.

Double drum scene summary keywords

Multi-layered plate, uneven thickness, large assembly gap, continuous strong vibration/impact, plastic/composite material, load-bearing dynamic force, high reliability requirements.