3. Poka-yoke is a Japanese word that means
"fail-safing" or "mistake-proofing".
A poka-yoke is any mechanism in a lean
manufacturing process that helps an
equipment operator avoid mistakes .
Its purpose is to eliminate product
defects by preventing, correcting, or
drawing attention to human errors as
they occur.
4. Poka-Yoke was developed by Shigeo Shingo from Toyota
Motor as a tool to achieve Zero Defects.
• The process of Zero Defects is also
known as “Mistake Proofing” or “Fail-Safe”.
5. Old type’s Lift
Set by engineer in a
building
&
Its maximum weight
capacity is 200 kg
8. If more people
enter the lift then
weight will
increase, which
increases the
possibility of
break down of
lifts wire because
there is no
warning
mechanism on
excess weight .
9. Latest lifts are very
advanced, because
when it is over weight
the alarm will start &
indicate light , until
weight is not reduced
This is done through
poka yoke
11. Here
people want lift but he /she
can’t use , why ?
Because lift can’t run on
overload. People want but
they can’t use. This is good
for our safety, so here no any
defect comes out .
This is also called zero
defect.
24. Fail safe machine for
quality control
Poka yoke
proofing is
powerful because
its every part is
connected to a
digital signal so
when any fault is
found signal is
passed
simpleinexpensive
comprehensive
