DC Electric-Thread Fastening

Aug. 9, 2007
The Kappa controller optimizes dc-electric threaded fastening by measuring the actual torque and comparing it to quality limits.

The Kappa controller optimizes dc-electric threaded fastening by measuring the actual torque and comparing it to quality limits. Other methods, such as current control, can only estimate torque. The device is compatible with the full range of QPM DC electric tools, from 0.6 to 2,000 Nm. One tool can be set up to assemble joints of different target torque levels — unlike air tools, which require separate tools for each torque level.

Features of the Kappa controller include: large data display with softkey navigation for ease of use; Parameter Wizard for simplified setup; and embedded toolbox software that runs on a Web browser and feeds analysis of tightening results directly from the controller. It counts fastened bolts and detects cross-threads, rehits, and slip-offs. The Kappa system includes Adaptive Tightening Control (ATC), which automatically adjusts for different joint designs and part variations during each tightening cycle. ATC manages speed and power to the motor to control fastening.

Stanley Assembly Technologies, 5335 Avion Park Dr., Cleveland, OH 44143, (440) 461-5500, stanleyassembly.com

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