3. IKEA and Wingquist Laboratory
IKEA
World-leading home furnishing company
IoS, located in Älmhult, Sweden
147.000 co-workers, 315 stores in 27 countries
Turnover of 28.7 billion Euro (2014)
● Wingquist Laboratory
○ Interna)onally compe))ve competence center for mul)disciplinary research within the field of efficient product
realiza)on
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
4. Variation?
Is your life
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
7. Introduction - Two main “parameters”
1. Loca7ng schemes
Lock 6 DOF in space
Control concept robustness
Rigid/Non-rigid
2. Tolerance
Define allowed varia)on
Control cost
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
8. Problem description
Current way of working
SolidWorks
FEA done in outer software
Tolerances defined according to Swedish standard
No set requirements on overall shape
● Ikea would like to further develop the tolerancing procedures
○ Involving more engineering skills and exploring alternative ways of working
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
10. Time plan
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
11. Product VALJE
● Simula)ons done on Valje outer frame, other parts and sub-assemblies neglected
○ Back panel not assembled against any part
○ Sliding mechanism patent confiden)al → No CAD-files can be obtained
○ Drawers would be floa)ng in mid-air
● Assembly sequence
○ Leh Panel → Boiom Panel →Top panel → Right Panel
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
19. Rigid model
General working procedure
● Convert file(VRML) to RD&T
● Locating scheme
● Add tolerances
● Create measure
● Run simulation
○ Variation , stability, contribution analysis
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
20. Rigid model & Stability simulation
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
A1/B1/C1
First try
Final model
A1
A2
A3
A3-H
21. Measures and variation simulation
Flush measure in 8 corners
4 Flush measure in T&B R&L panels
each
4 Inner height measures
4 Inner width measures
1000 iterations
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
22. Variation & Contribution results
Strange in corner 02 and 06
Due to no locator points there
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
2
6
1
3
4
5
7
8
23. Variation & Contribution results
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
24. Variation & Contribution results
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
25. Summary RD&T Rigid Simulation
Pros
Quick and less simulation time
No need for top of line computer
Monte carlo simulation
3D tolerance stack-up could capture the rotation
Cons
Can’t be over constrained
Need to make choice on which wedge dowel pairs should
be used in assemblyIntroduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
26. Non-rigid model
General working procedures
● Mesh parts
● Convert mesh to RD&T
● Set up Locating scheme ( 12 fasteners)
○ Create superpart, which include all the frame panels
○ Using 12 fasteners to lock each parts
● Add tolerance
● Create measure
● Run simulation
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
27. Variation & contribution
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
28. Variation & contribution
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
29. Variation & contribution
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
32. Summary of RD&T non-rigid simulation
Pros
Allow for over-constrained locating schemes
Parts are can bend during assembly due to errors in part geometries and
fixtures
FEA - based
Forces, stress, deformations includes
Contact modeling, parts are not allowed to penetrate
Monte Carlo simulation
Cons
Require top of line PC
Introduction Problem description Goal and scope Product Valje SolidWorks simulation RD&T rigid simulation RD&T non-rigid simulation Benchmark Conclusion Future work
