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Minimising machinin...
Minimising machining distortions with support from adaptive fixtures and adjustment of the NC-code
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- Werke, Mats (författare)
- RISE,Tillverkningsprocesser
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- Semere, Daniel (författare)
- KTH Royal Institute of Techology, Sweden
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- Dahlquist, Håkan (författare)
- System 3R, Sweden
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- Friberg, Peter (författare)
- ETP, Sweden
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- Wretland, Anders (författare)
- GKN Aerospace, Sweden
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(creator_code:org_t)
- 2020
- Engelska 58 s.
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Serie: RISE Report ; 2020: P102403
- Relaterad länk:
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https://ri.diva-port... (primary) (Raw object)
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The aim was to develop and test an adaptive fixture concept with a modified hydraulic chuck from System 3R. The conclusion is that the chuck may be a good concept for adjusting machining distortions but further development is recommended. Further, a literature survey concerning responsive fixtures for CNC-machining is presented. In addition, a virtual approach for compensation of machining distortions was tested. A framework of LS-Dyna algorithms for springback compensation after sheet metal forming was tested on a use case. The study indicates that the concept can be applied for NC-code optimisation on solid geometries with a complex manufacturing process chain composed of e.g. forging, heat treatment and proceeding machining processes. The deformations after machining were notably reduced in this numerical survey. Also virtual concepts for calculation of material removal strategies and clamping force analysis is suggested and demonstrated. The project was carried out with the support of physical experiments with an adaptive fixture and simulation with FEM based on the contour method.
Nyckelord
- Machining distortions
- Adaptive Fixture
- FEM
- Machining strategies
Publikations- och innehållstyp
- vet (ämneskategori)
- rap (ämneskategori)