DEFINITION
· Group technology is a manufacturing
philosophy in which we are grouped the part based on the similarities in design
or manufacturing process.
· The main purpose of group technology
is to reduce the overall manufacturing cost.
There are
two types of part families :-
a) Based on the design characteristics
b) Based on the manufacturing characteristics
1. Based on the design characteristics
As a name
suggest that the grouping of the part is based on the design characteristics such as geometric shape and size.
Such part
may have different manufacturing characteristics due to change in quantity,
tolerance, type of material.
For
example:-
2. Based on the manufacturing
characteristics
Here part is
grouped, based on the manufacturing characteristics but having different design
characteristics.
For
example:-
Above some
figure is given, in this all the part first turning operation is done Hence similar
manufacturing characteristics.
Advantage of
group technology
1) Less material handling.
2) Setup time are reduce in reduce
manufacturing lead time.
3) It reduces the labour cost.
4) The use of GT allows faster
production thus reducing inventory and work in process.
Disadvantage
1) Making the group is time consuming.
2) It needs skilled person to make a
group or part families.
3) Difficulty in analyzing the data.
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