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Servo-Projection Welding Machine


The modular aluminium design makes the Alligator servo-projection welding machines extremely stable and free from torsion effects. At the same time, they weigh considerably less than comparable systems constructed from steel.

Depending on the welding task, the system can be equipped with one driven servo axle and a fixed counter electrode or with two servo drive axles.

The welding current and the control of the servo-drives is provided for example by the ServoSPATZ+M600 power source. Combined with the built-in MFDC transformer (standard), this system configuration allows welding currents of up to 30 kA. Even more powerful system configurations are available on demand.

Among other things, the projection geometry at the start of weld time defines the weld quality in projection welding applications. If this projection geometry is influenced in a negative way, due to rough approach of the welding electrode (frequently in pneumatically driven systems), effects on the strength of the welded joint are inevitable.

The fast travel speed and the soft and controlled touch on the components are advantageous. The integrated measurement of electrode penetration provides data enabling functions such as part recognition and quality control.

Adjustable follow-up devices in the drive axles allow the optimal adaptation of electrode penetration during the weld process and reduce weld spatters.

The equipment is, of course, also applicable for standard spot welding applications and is taking advantage of the adaptive MASTER control mode provided by ServoSPATZ power sources.

Technical Data  
Servo-projection welding machine with two Servo-electrode axles
max. throat depth 230 mm / 9.06 in
max. height of weld window 350 mm / 13.78 in
Electrode force drive with resolver / brake
max. electrode force 10,000 N
max. working stroke 150 mm / 5.91 in
max. rate of travel 500 mm/s / 19.69 in/s
Transformator 1,000 Hz DC
Type SPATZTI-120R 120 kVA at 20 % DC
Counter electrode driven with resolver / brake
max. force 10,000 N
max. working stroke 150 mm / 5.91 in
max. speed 500 mm/s / 19.69 in/s
Quick-change device optional

 

Technical Data  
Servo-projection welding machine with one Servo-electrode axle
and steady-state welding table
max. throat depth 230 mm / 9.06 in
max. height of weld window 150 mm / 5.91 in
Electrode force drive with resolver / brake
max. electrode force 10,000 N
max. working stroke 150 mm / 5.91 in
max. rate of travel 500 mm/s / 19.69 in/s
Transformer 1,000 Hz DC
Type SPATZTI-120R 120 kVA at 20 % DC
Counter electrode fixed on welding table, height-adjustable
Quick-change device optional