The document outlines the main types of drawings in a product design technical representation plan: 1. A general arrangement drawing showing the overall product and its relation to the user and environment. 2. A product architecture or exploded drawing showing the components and their assembly with item names and a bill of materials. 3. An assembly drawing showing the product construction through section views and assembly details. 4. A production drawing with complete representation of each isolated component for manufacturing.

1. TECHNICAL REPRESENTATION PLAN
Sergio Antonio salvi
PRODUCT DESIGN
TECHNICAL
REPRESENTATION

2. TECHNICAL
REPRESENTATION
PLAN
Main DRAWINGS in
the product design
technical
representation plan
■ 2. PRODUCT “ARCHITECTURE” DRAWING, “exploded”
drawing in which the components are highlighted (and
indicated with an ITEM NAME) by showing how they are
assembled each other (the representation is completed with an
information box so called “BILL OF MATERIAL”; obviously you
don't need it in “mono-components” products);
■ 1. “GENERAL ARRANGEMENT” DRAWING, the first drawing
to give a general outlook to the product, related both to the
PHISICAL ENVIRONMENT and the USER;
■ 3. “ASSEMBLY” DRAWING, the most important technical
drawing for “multi-component” products in which, by means of
SECTION VIEWS and SCALED ASSEMBLIES DETAILS, the
product construction is described (obviously you don't need it
in “mono-components” products);
PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi
■ 4. “PRODUCTION” DRAWING, complete representation of
each isolated component targeted to produce the part.

4. TECHNICAL
REPRESENTATION
PLAN
1. “GENERAL
ARRANGEMENT”
DRAWING, a general
outlook to the
product related to the
user and the phisical
environment
PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi

6. TECHNICAL
REPRESENTATION
PLAN
2. PRODUCT
“ARCHITECTURE”
DRAWING,
“exploded” drawing
with “item” names
and “bill of material”
PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi

8. TECHNICAL
REPRESENTATION
PLAN
2. PRODUCT
“ARCHITECTURE”
DRAWING,
“exploded” drawing
with “item” names
PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi

9. TECHNICAL
REPRESENTATION
PLAN
2. PRODUCT
“ARCHITECTURE”
DRAWING, “bill of
material”
PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi

10. TECHNICAL
REPRESENTATION
PLAN
2. PRODUCT
“ARCHITECTURE”
DRAWING, “bill of
material”: item
classification (“part
reference”, “part
number”, “reference
designation”)
according to the
most recent
guidelines
(norm ISO 7573-2011)
PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi
■ The “item”, also called “position number” and “reference
number”, constitutes the elementary unit of the product
architecture, so that its importance is fundamental in PDM
(Product Data Management). In industrial practice –hence in the
norms– it is divided in three parts:
the “part reference” is a simple and convenient code referred to
a part exclusively in the project of a product (it is auxiliary); it
can also include a “group” definition;
the “reference designation” is a code who can be used to better
specify a “part number” (it is auxiliary);
the “part number” is the effective code who identifies a part, in
an organization; it is absolutely invariable and it can be used
along the whole product lifecycle, even longer when a
component is the element of a “platform” (it is essential data).

11. TECHNICAL
REPRESENTATION
PLAN
2. PRODUCT
“ARCHITECTURE”
DRAWING, “bill of
material”
LOGICAL SCHEME
OF A BOM AND
POSSIBLE ITEM
LABELS
PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi
4
STS01
02.01.03
4
02.01
02.01.03
STS01
PART
REF.
REF.
DES.
PART
N.
Q. U. PART NAME TECHNICAL DATA,
DESIGNATION
01.01 US01 76 g UPPER SHELL BAYER MAKROLON
(grade specifications
to be defined)
01.02 LS01 63 g LOWER SHELL BAYER MAKROLON
(grade specifications
to be defined)
02.01 02.01.01 STS01 1 SELF-THREADING SCREW UNI 9709 PZ TA 5X20
02.01 02.01.02 STS01 1 SELF-THREADING SCREW UNI 9709 PZ TA 5X20
02.01 02.01.03 STS01 1 SELF-THREADING SCREW UNI 9709 PZ TA 5X20
02.01 02.01.04 STS01 1 SELF-THREADING SCREW UNI 9709 PZ TA 5X20

12. TECHNICAL
REPRESENTATION
PLAN
3. “ASSEMBLY”
DRAWING, sections
views and
assemblies details
PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi

14. PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi
TECHNICAL
REPRESENTATION
PLAN
3. “GROUP
ASSEMBLY”
DRAWING, sections
views and
assemblies details

16. PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi
TECHNICAL
REPRESENTATION
PLAN
3. “GROUP
ASSEMBLY”
DRAWING, section
detail

17. TECHNICAL
REPRESENTATION
PLAN
4. “PRODUCTION”
DRAWING, complete
representation of
components targeted
to produce the parts
PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi

19. TECHNICAL
REPRESENTATION
PLAN
4. “PRODUCTION”
DRAWING
(“ASSEMBLY”
DRAWING),
“magnified scale”
detail
PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi

20. TECHNICAL
REPRESENTATION
PLAN
AUXILIARY
DOCUMENTATION in
the product design
technical
representation plan
■ TECHNICAL DOSSIER, in which it is possible add information
that is not included in the drawings like: materials data sheets,
standard external components description with their supplier’s
drawings etc.;
■ SAMPLES, PHISICAL or VIRTUAL MODELS: semifinished
materials samples (for example mounted onto an exhibition
panel), standard components, aesthetical phisical models,
virtual representations, prototypes etc.;
PRODUCT DESIGN
TECHNICAL
REPRESENTATION
Sergio Antonio Salvi
■ FILES: mathematical models for components development
(this is foundamental when a part must be produced by
moulding or by automatic cutting or by automatic bending, and
when the drawing representation is impossible, like in
“sculptured” geometries).

21. OMITTED