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Geometric Distortion Analysis Using CAD/CAM Based Manufacturing Simulation
Swerea IVF.
Scania CV AB.
KTH, School of Industrial Engineering and Management (ITM), Production Engineering, Machine and Process Technology.
2014 (English)In: Proceedings of the 6th International Swedish Production Symposium, Chalmers university , 2014Conference paper (Refereed)
Abstract [en]

Machining of components may cause geometric distortions and thereby quality issues and increased costs. This paper presents an engineering approach of CAD/CAM based manufacturing simulation in order to be in control of geometric distortions after machining. The method utilises STEP AP209 for communication of CAD/CAM simulation data. The method improves the ability to optimise process parameters, geometry, and material, in order to fulfil the design requirements. The method supports concurrent design and process planning using 3D models in CAD/CAM and FEM.

Place, publisher, year, edition, pages
Chalmers university , 2014.
Keyword [en]
Process planning, manufacturing simulation, fixture design, CAD/CAM, FEM
National Category
Mechanical Engineering
Research subject
SRA - Production; Production Engineering
URN: urn:nbn:se:kth:diva-160023ISBN: 978-91-980974-1-2OAI: diva2:788129
The 6th International Swedish Production Symposium, Göteborg, 16 - 18 September 2014
XPRES - Initiative for excellence in production research

QC 201502013

Available from: 2015-02-12 Created: 2015-02-12 Last updated: 2015-10-16Bibliographically approved
In thesis
1. Principles for modelling of manufacturing sequences
Open this publication in new window or tab >>Principles for modelling of manufacturing sequences
2015 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The manufacturing sequence influence, to a large extent, component properties like fatigue life, shape accuracy and manufacturability. By simulating the manufacturing sequence, using numerical or empirical models, and extracting important accumulated data, like residual stress, hardness and shape, the possibilities of early analysis of a design concept and the associated manufacturing sequence will increase. An established methodology has the potential of reducing physical testing and the time and costs of product design and process planning.

This thesis proposes an algorithm to be used for setting up a framework of interconnected process step models. With support from the algorithm, it is possible to extract a virtual simulation sequence from a physical manufacturing sequence. Thereby, you can replicate the aggregated effects of process steps on part key features and manufacturing features. The algorithm will serve as a tool in process planning when establishing virtual manufacturing sequences. The virtual sequences should be used for virtual prediction of component properties, optimization of process parameters and evaluation of the effects of replacing, removing or adding process steps to a manufacturing sequence

The algorithm is based on stepwise upstream selection of process steps, definition of interconnected models and selection of interconnected datasets using breadth first search. The algorithm completes existing procedures for data mapping and exchange of data between models into an overall approach for establishing virtual manufacturing sequences. Other scientific contributions are methods for modelling of deep rolling and blasting, a model material for validation of rolling and forging simulation and principles for integration of process simulation with CAD/CAM.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2015. iii, 33 p.
National Category
Production Engineering, Human Work Science and Ergonomics
Research subject
Production Engineering
urn:nbn:se:kth:diva-175476 (URN)978-91-7595-731-9 (ISBN)
Public defence
2015-11-06, Brinellsal M311, Brinellvägen 68, KTH, Stockholm, 10:00 (English)

QC 20151016

Available from: 2015-10-16 Created: 2015-10-15 Last updated: 2015-12-30Bibliographically approved

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