|
Computer-aided design (CAD) is one of
the actual trends of
technological pre-production development which
provides high
quality
and efficiency of design projects.
Designing
of technological process (TP) assisted by CAD
systems allows in a short time to perform
preparatory stages before launching new models
into production. A stage of technological design
is a preparing of technological documentation
which describes a process of a new model
manufacturing. The
input data for the item design will be: a
technical sketch, a description of the models
appearance and a specification of the cutting
details.
It is known that text documentation resulted
from traditional technological product design
does not reveal the links between items,
equipment and definite elements of TP, which
prevents us from developing of an efficient
design of production. Therefore we developed a
method for composition of graphical
documentation assisted
by CAD which reveals
external structure of TP of clothes
manufacturing with
the links extracting.
The main stages of clothes manufacturing TP are
the following: parts processing and their
joining into a garment. The stage of parts
processing assumes parallelism of details and
units treatment. The garment units are separate
parts of the garment according to construction
and technological processing (front and back
panels, collar and etc.). During the stage of
parts processing each unit is made of one or
several cut details which processing can be
composed from units processing. The unit is a
complex part of the garment which is
characterized by completeness of technological
processing. The followings are determined as the
units which can belong to any garment details:
pockets, fastenings, vents and openings.
During the stage of parts joining the garment
details are joined to each other. For example
the constructive elements (CE) of clothes with
waistbands joining stage are side, step, middle
cuts, top and hem cuts of the product.
Determination of the CE sequence at the stage of
joining requires analysis of all elements links,
and this considerably complicates the process of
the technological sequence formation. Existence
of some model-constructive features in the
garment details changes the sequence of CE
processing. Thus, for example, the design of
trousers waistband determines the processing
sequence at the stages of middle, side and top
cuts processing.
|
