Impulse nutrunner
Yokota
Rami Yokota B.V.
Yokota impulse wrenches are widely used for tightening jobs in the assembly industry, where accurate torque tolerances are necessary. Impulse tools are light, powerful, small and very importantly, have no kickback. The Yokota range of impulse tools is increasing fast, starting at 6Nm to tighten small joints, and goes up to 600Nm. Evaluation of tightening processes in car assembly shows that tightening joints uses 10%
of the total assembly time. Working with faster tools therefore can speed up assembly lines substantially.
A fail-safe system
Product liability is essential to carmakers. All tightened joints have to be correct. For this reason all bolted joints must be counted, documented and, of
course, tightened with the right clamping force. In order to do this, you need an impulse wrench (with a built-in transducer) connected to a controller. If the controller establishes that the tightened joints do not meet the specifications, it can give a line-stop signal and the joints have to be checked manually. This failsafe system fits perfectly in the Poka Yoke Strategy.
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