How Pokayoke is ensured in Yokota System wrench
How
Pokayoke is ensured in Yokota System wrench
YOKOTA System Wrench is
a tightening tool made in Japan and very popular in terms of high tightening
speed and high accuracy. It works by air pressure, this force is what causes
the system to work; in other words, it is the power that drives the machine.
Air pressure is provided by an air compressor. This machine has a gas-powered
pump mechanism that continually forces air into a steel container tank until the
air becomes pressurized. By using this pressurized air tool works. 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 kick-back. 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. YOKOTA System Wrench is built-in having an error-proof function after tightening completed. Every tightening gives a feedback
signal to the controller to ensure the tightening condition on the bolt. System
Wrench Controller have angle monitoring function which is used to detect the
movement of bolt-on tightening application and makes tightening accurate or
Poka-Yoke.
Poka-yoke is a technique
for avoiding simple human error in the workplace. Also known as
mistake-proofing, goof-proofing, and fail-safe work methods, poka-yoke is simply
a system designed to prevent inadvertent errors made by workers performing a
process.
The function of the
controller that ensured the Poka-Yoke is Torque limit, OK-NG-OKALL signal,
Bolt count and Rundown Angle etc. Torque limit ensures the torque range of that
particular application if the residual torque is not within the applied limit,
the tool gives a signal to the controller and the controller indicates NG on the
panel screen. Similarly, the Rundown angle is used to detect the error caused by the
operator and condition of the tightening bolt on the application whether it
tighten or loosen. Minimum angle value detects the double hit tightening, it
means tightening over-tightening and Maximum angle value detect over-tightening
or bolt free condition on the application.
Microntech
is a channel partner for YOKOTA in India, having local sales and service support
all over India. Microntech has a team of experts that can help you understand
the torque process. It is a premier assembly solution provider in India
with global experience. To know more about assembly solutions provided by
Microntech please visit our website www.microntechgroup.com or
you can contact your nearest Microntech branch to schedule a demo or a visit
for any issues you are facing on your assembly line.
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