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.
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The
authors are associated with Moscow State University of Design and Technology
