schunk group - fpc2022 · 2020. 3. 31. · schunk group rodheimer straße 59 35452 heuchelheim ¬...

Schunk GroupCompetence in materials engineering and mechanical engineering

Content

27.02.2020 Schunk Group 2

Content:¬ Overview about the Schunk Group

¬ „Composites“ inside Schunk

¬ Application of CFRP-Sleeves

¬ Filament winding process

¬ Examples and Advantages of CFRP-Sleeves

¬ Consideration of complete assembly and system

¬ Conclusion

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Filament winding for CFRP components

Area Composites and Filament winding technology

27.02.2020 Carbon Fiber Reinforced Sleeves (CFRP) // Volker Bier, Schunk Kohlenstofftechnik GmbH 5

Image: Wikipedia, 22.09.2017

CFRP: +

Fiber

Human Hair

RESIN

Application of CFRP Armor Sleeves

627.02.2020 Carbon Fiber Reinforced Sleeves (CFRP) // Volker Bier, Schunk Kohlenstofftechnik GmbH

Where Composites can be used:

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Production Concept for Fiber-Reinforced Armor Sleeves

Wet-wound tube

1. Filament Winding

2. Curing

3. Machining27.02.2020 Carbon Fiber Reinforced Sleeves (CFRP) // Volker Bier, Schunk Kohlenstofftechnik GmbH

Source: ETH-Zürich

Possible applications of CFRP Armor Sleeves

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Armor Sleeve for Rotor in

¬ High performance permanent magnet motors

¬ High performance externally excited motors

¬ Electrically driven turbochargers for combustion

engines

¬ Turbomolecular pumps

Rotor for Holweck stageTurbo molecular pump (400 m/s)

Image: Pfeiffer Vacuum, Germany

Example

Image: dronetrest.com & electronoobs.com

27.02.2020 Carbon Fiber Reinforced Sleeves (CFRP) // Volker Bier, Schunk Kohlenstofftechnik GmbH

Advantages of CFRP Armor Sleeves

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¬ Very strong

• Allows for much higher stresses compared to metals

• allows for thin walls of the sleeve

¬ Reduce gap between rotor and stator

• Coefficient of thermal expansion is almost near to zero

• low electromagnetic losses

• noise reduction

¬ Low- / non-conductive

• reduce eddy current losses

¬ Light weight

• reduce moment of inertia

• faster motor acceleration

27.02.2020 Carbon Fiber Reinforced Sleeves (CFRP) // Volker Bier, Schunk Kohlenstofftechnik GmbH

Consideration of the whole system

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A sucessful application needs a technical view on the complete system !

Recommended steps are

¬ Planning of assembly method

¬ FE-Analysis for sleeves

¬ Production of prototypes

¬ Assembly trials and validation

¬ If necessary further testings like chemical resistances etc.

Carbon Fiber Reinforced Sleeves (CFRP) // Volker Bier, Schunk Kohlenstofftechnik GmbH

¬ Glueing with adhesive

¬ Shrink fit: rotor cooled, CFRP sleeve slides over magnets

¬ Press fit: rotor is slightly oversized, CFRP sleeve pressed over magnets

Assembly Solutions for CFRP Armor Sleeves

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F

27.02.2020 Carbon Fiber Reinforced Sleeves (CFRP) // Volker Bier, Schunk Kohlenstofftechnik GmbH

Schunk GroupRodheimer Straße 5935452 Heuchelheim ¬ DeutschlandTel +49 641 608 0info@schunk-group.comschunk-group.com

Direct Contact:Volker Bier, New Business & TechnologySchunk Kohlenstofftechnik GmbHPhone: +49 641 608 2330volker.bier@schunk-group.com