Skip to main content
Go to the home page of the European Commission (opens in new window)
English en
CORDIS - EU research results
CORDIS
Content archived on 2024-04-15

DEVELOPMENT OF A KNOWLEDGE BASED CAD/CAM COMPONENT FOR OFF LINE PROGRAMMING OF RECURRING SENSOR CONTROLLED WELDING PATTERNS

Objective


This project resulted in the development of an off-line programming system for arc welding robots that significantly reduces the time it takes to train a robot, greatly improving the efficiency of the production environment.

A set or rules with welding- and robotics-specific know-how are incorporated in the new system, which provide the programmer with helpful support.

The steps covered are:

- Analysis and classification of the welding geometry based on CAD data
- Determination of welding parameters
- Planning of the welding sequence under process-specific and manufacturing aspects
- Planning of the robot's motion during welding and between welding
- Positioning of external robot axes and resolving of kinematic ambiguities
- Storage of the robot program in a relational data base.

The system uses standardization interfaces such as IGES, SQL, and X-Windows, and is open wherever possible to make replacement or extension of modules easy.
THE OVERALL OBJECTIVE OF THE PROJECT IS THE REALIZATION OF A PROTOTYPE SYSTEM FOR OFF-LINE PROGRAMMING OF ARTICULATED ARM ROBOTS AND ITS IMPLEMENTATION IN AN EXISTING CAD/CAM ENVIRONMENT. WITH THIS SYSTEM, IT IS INTENDED TO SIMPLIFY THE GENERATION OF OPTIMAL EXECUTABLE ROBOT PROGRAMS FOR THE WELDING PRODUCTION OF LARGE WORKPIECES WITH RECURRING WELDING PATTERNS. ON THE BASIS OF THE CAD-WORKPIECE-MODEL, KNOWLEDGE BASED MODULES HAVE TO SELECT AND COMBINE EXISTING WELDING PATTERNS OUT OF A DATABASE AND GENERATE A NEW ROBOT PROGRAM FOR THIS SPECIFIC WORKPIECE.

SIMULATION MODULES ENABLE CHECK AND CORRECTION OF DETECTED MALFUNCTIONS OF THE EXPERT-SYSTEM AS WELL AS DETECTION OF INTERFERENCES BETWEEN THE ROBOT, WORKPIECE AND THE ENVIRONMENT.

INACCURACIES ASSOCIATED WITH THE MECHANICAL STRUCTURE OF THE ROBOT AND THE PERIPHERICAL COMPONENTS HAVE TO BE COMPENSATED WITH OFF-LINE CORRECTION MODULES AND SPECIFIC CORRECTION STRATEGIES. SENSOR FUNCTIONS AND STRATEGIES ADAPT OFF-LINE GENERATED AND CORRECTED ROBOT PROGRAMS ON-LINE TO EXISTING WORKPIECE TOLERANCES. BY THE USE OF SUITABLE MENU TECHNIQUES, THE SYSTEM'S DEGREE OF AUTOMATION AND FLEXIBILITY IS TO BE TAILOR-MADE TO THE SUPERVISORS OF THOSE MANUFACTURING SYSTEMS, I.E. SKILLED WELDERS.

Fields of science (EuroSciVoc)

CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.

You need to log in or register to use this function

Topic(s)

Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.

Data not available

Call for proposal

Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.

Data not available

Funding Scheme

Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.

CSC - Cost-sharing contracts

Coordinator

FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
EU contribution
No data
Address
Nobelstrasse 12
70569 STUTTGART
Germany

See on map

Total cost

The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.

No data

Participants (3)

My booklet 0 0