Page 16 - MetalForming October 2014

Tech Update
Low-Maintenance Spot-Welding Gun Ideal for Aluminum
In close cooperation with users from the automotive industry, Fronius International GmbH (with U.S. operations in Portage, IN) has developed its second-generation DeltaSpot resistance spot-welding gun that’s loaded with new features to improve serviceability, minimize operating costs and opti-
to readjust every millisecond during welding to help achieve opti- mum results. And, the transformer and rectifier have been shift- ed closer to the electrodes to minimize conductivity loss. As part of the reworking of the mechanics, Fronius made the interface between the base body and the arms more modular. Also, the arm geometry and window are more flexible for cus-
mize quality. The core elements of the sec- ond-generation gun include a newly configured base body and radically reworked arms and drive motors.
tomized configurations.
To speed repair and main- tenance of the gun and min- imize downtime, components such as transformer, motor con- trol box, tape drive and main drive have plug-in connections. And, engineers simplified replace- ment of the process tape—the spe- cially coated metal tape inserted between the workpiece and the elec- trodes that protects the surface of the electrodes against contamination. This ensures that electrode con- tact surfaces stay clean and each weld uses the identical start
With the previous genera-
tion, the reeling and unreeling
device for the process tape,
welding-gun adjustment and
the servo-electric main drive
were integrated into the
construction of the arm
body; they now are located
on the base body. As a
result of this decoupling, Fro-
nius engineers simplified gun
construction and made the design more stable, an absolute must for aluminum spot welding. A powerful mid-frequency direct-cur- rent transformer operates at 1000 Hz. This enables the system
situation.
Fronius: 877/376-6487; www.fronius.com
BEVELING TOOLS FOR WELD PREPARATION
From handheld tools to stationary machines, our equipment will give you an edge on beveling.
• Up to 10 times faster than grinding
• Consistent straight or rounded beveled edge along any contour
• Wide variety of machines application
• Many choices of angles and radii • No unhealthy grinding dust
Booth C1158
859.331.8770 www.shmusa.com
Visit us at
14 MetalForming/October 2014
www.metalformingmagazine.com