Orbital riveting machine double-rivet automatic with rotary indexing table, rotary table, rotary div

DUNKES DN 4

Orbital Riveting Machine Double Riveting Automatic with Rotary Indexing Table DUNKES Type DN 4
Rotary table with SIEMENS control system
Machine no. P 81 - 5458 Year of manufacture: 1982 / 2009
Rivet shank diameter max. 12 mm
Tool shank diameter 16 mm
Throat depth 190 mm
Rivet head stroke per riveting unit approx. 60 mm
Riveting spindle speed approx. 1,400 rpm
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Tool-to-anvil installation height max. 80 mm
Compressed air requirement 6 bar
Motor power per riveting unit 1.1 kW
Power supply 380 Volt, 50 Hz
- Rotary indexing table with servo drive, indexing step size programmable via Siemens PLC control
- Double riveting unit is adjustable within the machine frame relative to the indexing table
- Table diameter Ø 295 mm for accommodating round workpieces
- Pneumatic riveting stroke motion
- Riveting unit adjustment via gear motor with leadscrew, positioning via adjustable micro switch
- Modernization of the control system and retrofit with servo drive for the rotary table in 2009
- New electrical control cabinet with Siemens Simatic panel – built in 2009
- Riveting time infinitely programmable
- Riveting pressure infinitely adjustable via pressure gauge
- Micrometer stop for stroke limitation of the opposing riveting units 0–60 mm
Space required L x W x H 3200 x 1250 x 2400 mm
Weight approx. 2,500 kg
Good condition

The machine was used for riveting segment saw blades from Ø 400 to Ø 2000 mm.
The segments were manually placed onto the carrier disc and fixed with straight rivet pins.
The opposing riveting unit simultaneously rivets the pin from both sides.
The controlled table automatically rotates to the next working position after each cycle.
Ideal for saw blade manufacturers and repair shops.
Alternatively suitable as a basis for constructing a special-purpose machine.

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