Spin Welders features dual-servo design.

Press Release Summary:

Combining color touchscreen UI, controls, and mechanical functions in one package, Dual Servo Spin Welder is designed for welding circular parts. Control system holds orientation tolerances to ±0.1° of rotation and Z-axis tolerances to 10 microns and also coordinates performance of both servomotors for constant torque welding mode. Position jog teach feature facilitates setup, while ability to program home position reduces cycle times.

Original Press Release:

Dukane Introduces New Dual Servo Spin Welders

The Dual Servo Spin welder is designed for welding circular parts that have a tight tolerance requirement for both the orientation between the parts being welded and the overall final welded assembly height. The new design builds on the solid foundation of Dukane's existing single servo-spin welder, by replacing the pneumatic Z-axis drive with a second servomotor. The unit's control system provides the ability to hold orientation tolerances of +/- 0.1 degree of rotation and Z-axis tolerances of 10 microns. In addition, the control system coordinates the performance of both servomotors thereby providing the user with a new welding mode Dukane calls "constant torque". This "constant torque" welding mode provides the user with the ability to specify a torque value that most closely matches the melt flow rate of the material, and the controls system coordinates the Z-axis velocity and RPM to provide this torque throughout the weld cycle.

Pre-weld parameters that can be programmed include part pick-up and trigger by position or torque. Programmable welding methods include Weld by Time, Number of Turns, Collapse Distance w/orientation, Absolute Distance w/orientation and Energy. Post weld control features include Hold by Time, Hold by Collapse Distance, Hold to a Fixed Position, and Hold in Constant Thrust.

The new dual servo unit employs the same user friendly operator interface that was introduced on the original single-axis servo-spin welder. Setup of machine is virtually effortless thanks to the "new position" jog teach feature. This intuitive interface allows the operator to quickly and simply jog the unit to both the final orientation axis position and the final Z-axis height position. Alternately, if this data is known, it can be entered directly through the color, touch-screen panel that serves as the user interface. Error conditions are graphically indicated on the panel and include an explanation of the source of the error.

All machine setup parameters are programmed through the password-protected interface. This insures that no unauthorized adjustment of the machine setup can occur. A special new programmable feature also allows the user to define the "home" position, thereby allowing the elimination of unnecessary vertical stroke and thereby reducing overall cycle time. The machine can store up to eight setup files in local memory, and has programmable limits on up to 11 independent process parameters. All weld data can be exported.

Another key characteristic of the design is the unitized packaging of the thruster portion of the press. With this design the user interface, the controls, and the mechanical functions of the machine are all contained in one package, thereby eliminating any potential problems with external cabling.

The Servo spin product line includes 5 different models, two of which are Dual Servo. The first is the high speed/low torque machine for small assemblies up to 80mm.diameter and the second is low-speed/high torque models for larger parts. The dual Servo and the pneumatic servo welders by Dukane meet CE requirements. The equipment includes a 2-year warranty and is backed by Dukane's industry renowned service and support.

Dukane is a global supplier of Spin, Laser, Ultrasonic, Vibration, Hotplate and Heat staking, tooling and software for both OEM and commercial plastic assembly markets Dukane is an IS0 9001:2000 certified manufacturer. For more information on Dukane's Dual Servo spin welders and their complete line of plastic assembly solutions contact: Mike Johnston, National Sales and Marketing Manager (630) 797-4902 or visit their web site http://www.dukcorp.com/us

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