Skip to main content

New structural alternative for modules in machinery

Objective


- Suitable nodes that fulfil the requirements established for their application in the machinery design. The behaviour of these nodes has been tested statically and dynamically and their results have shown that they are suitable for being used in machinery field.
- Prototype modules of machining centres, big gantry machines, punching machines and wood working machines built with reticular structures.
- Guidelines for designing prototypes modules with screwed or welded reticular structures. The guidelines result from the experience gained in designing prototype modules during the project. These guidelines include the design of the interfaces, the orientation of the bars and the geometrical characteristics of bars and nodes.
- Bases of the architecture for a data processing assistant tool for designing of machine structural modules based on reticular structures. The complete software tool will be done afterwards out of project.
Objectives and content
In industry in general and in the Machine-Tool sector in
particular, it is palpable the growing need of new
technical solutions. As a response to the problems
derived from actual structural elements (beds, columns,
portics mobile parts ..): scarce modularity, high weight
of the mobile modules, not detachable neither reusable,
high cost in time and resources for new redesigns, few
possibilities to obtain customer oriented products, great
dependency of suppliers (mainly founders), scarcely
manageable and costly transportation, costly unions to
the pavement, a new technique for the construction of
these structures in Machine-tool has been outlined.
It consists on structural modules composed of a reticule
of truss elements linked through screwed spherical knots.
This project is going to base on the spatial structures
used in civil engineering, to the construction of machine
structural elements that have been, up to date, made of
castings, welded sheets or in sometimes of polymeric
concrete.
This kind of structural designs offer the possibility of
increasing automation of the design processes by means of
software tools which link CAD with simple Calculus
programs, giving the designer the best design in the
presence of the forces and solicitations of one module,
thus, making the particularisation tasks easier. The
process of automation of design and assembly must finally
give the distribution and characteristics of bars and
nodes and the points where the rest of elements (motors,
guides, protections, ball screws) are to be joint.
After having accomplished a series of behavioural
theoretical analysis of this type of architectures as
compared to the traditional ones, the following
objectives are established:
To get enough data that permits the development of a
methodology, rules, strategies and good practices for
design and construction of several types of machine-tools
with this method.
Developing three prototype modules and experimentally
corroborate their adequate behaviour in existing
machines.
Developing a methodology and data processing assistant
tool for technical design of machine structural modules
based on reticular structures.

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

FATRONIK FUNDACION
Address
Poligono Industrial Ibaitarte 1
20870 Elgoibar
Spain

Participants (5)

HOMAG Mashinenbau AG
Germany
Address
3-5,Homagstrasse
72296 Schopfloch
LEUVEN MEASUREMENTS AND SYSTEMS INTERNATIONAL NV
Belgium
Address
65,Interleuvenlaan 68 Researchpark Haasrode
3001 Heverlee
Rainer Srl
Italy
Address
61,Via Amendola 61
45100 Rovigo
Torres M. Disenos Industriales S.A.
Spain
Address
Careterra De Jaca Huesca Km.9
31119 Torres De Elorz
Universität Stuttgart
Germany
Address
17,Holzgartenstraße 17
70174 Stuttgart