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Comparison of spinning trajectory designing methods for products with noncircular cross-section

Marcin Majewski

Marcin Majewski

  • Łukasiewicz Research Network – Poznań Institute of TechnologyPoznań, Poland
  • Institute of Materials Science and Engineering, Faculty of Mechanical Engineering, Lodz University of TechnologyŁódź, Poland
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Majewski, Marcin
, 
Tomasz Gądek

Tomasz Gądek

Łukasiewicz Research Network – Poznań Institute of TechnologyPoznań, Poland
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Gądek, Tomasz
, 
Leszek Klimek

Leszek Klimek

Institute of Materials Science and Engineering, Faculty of Mechanical Engineering, Lodz University of TechnologyŁódź, Poland
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Klimek, Leszek
 und 
Łukasz Nowacki

Łukasz Nowacki

Łukasiewicz Research Network – Poznań Institute of TechnologyPoznań, Poland
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Nowacki, Łukasz
  
13. Juli 2022
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Online veröffentlicht: 13. Juli 2022
Seitenbereich: 116 - 129
Eingereicht: 11. Feb. 2022
Akzeptiert: 20. Mai 2022
DOI: https://doi.org/10.2478/msp-2022-0012
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© 2022 Marcin Majewski et al., published by Sciendo
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Fig. 1

Strain distribution in rotational forming for circular mandrel (left) and non-circular mandrel (right)
Strain distribution in rotational forming for circular mandrel (left) and non-circular mandrel (right)

Fig. 2

Diagram of spinning a noncircular cross-section [3]
Diagram of spinning a noncircular cross-section [3]

Fig. 3

Diagram comparing shear forming and metal spinning
Diagram comparing shear forming and metal spinning

Fig. 4

Mandrel in the shape of an ellipse with dimensions 60 mm × 80 mm
Mandrel in the shape of an ellipse with dimensions 60 mm × 80 mm

Fig. 5

Mandrel in the shape of a square with dimensions 80 mm × 80 mm
Mandrel in the shape of a square with dimensions 80 mm × 80 mm

Fig. 6

Trajectories of spinning movements: ellipse
Trajectories of spinning movements: ellipse

Fig. 7

Trajectories for mandrel square: Method 2 at the top of the picture and Method 3 at the bottom of the picture
Trajectories for mandrel square: Method 2 at the top of the picture and Method 3 at the bottom of the picture

Fig. 8

Measuring sites A and B on the square draw-piece
Measuring sites A and B on the square draw-piece

Fig. 9

Chart of average m values depending on forming angle: Method 1
Chart of average m values depending on forming angle: Method 1

Fig. 10

Drawpiece in the shape of an ellipse
Drawpiece in the shape of an ellipse

Fig. 11

Chart of average m values depending on forming angle: Method 2
Chart of average m values depending on forming angle: Method 2

Fig. 12

Drawpiece in the shape of a rectangular obtained by Method 2
Drawpiece in the shape of a rectangular obtained by Method 2

Fig. 13

Chart of average m values depending on forming angle: Method 3
Chart of average m values depending on forming angle: Method 3

Fig. 14

Square drawpiece obtained by Method 3
Square drawpiece obtained by Method 3

Fig. 15

Visualization of measured hardness points in sample 1
Visualization of measured hardness points in sample 1

Fig. 16

Hardness Vickers HV 0,1 near the surface
Hardness Vickers HV 0,1 near the surface

Thickness measurements for the square drawpiece spun by Method 3 (negative values are the result of compressive strains of the material)

Height (mm) Measurement PRT m s
5 A −1.2% −1.5% −1.4% −1.6% −1.4% 0.00
B −6.0% −2.0% −3.2% −1.2% −3.1% 0.02
15 A 5.7% 5.7% 4.0% 12.0% 6.8% 0.04
B 6.8% 0.4% 7.2% 8.8% 5.8% 0.04
30 A 2.0% 2.8% 4.8% 2.0% 2.9% 0.01
B 8.8% 6.0% 8.4% 2.8% 6.5% 0.03
45 A 2.0% 2.8% 4.8% 2.0% 2.9% 0.01
B −1.6% 1.2% −0.4% 0.0% −0.2% 0.01

Thickness measurements: ellipse, 15 mm from frontal area

Item no. Angle (°) Measurement PRT m s
1 18 A 0.5% 0.5% 1.0% 1.0% 0.5% 0.5% 0.7% 0.00
B 0.5% 0.5% 0.5% 1.0% 1.0% 0.5% 0.7% 0.00
C 0.0% 1.0% 0.5% 1.0% 1.0% 1.0% 0.8% 0.00
2 30 A 4.5% 8.0% 8.5% 6.5% 7.0% 4.5% 6.5% 0.02
B 5.0% 8.5% 8.5% 7.0% 8.0% 5.5% 7.1% 0.02
C 4.0% 10.5% 9.5% 7.5% 6.5% 5.0% 7.2% 0.03
3 45 A 13.0% 14.0% 14.5% 12.0% 9.5% 4.5% 11.3% 0.04
B 15.5% 14.0% 12.5% 10.0% 9.5% 6.0% 11.3% 0.03
C 7.5% 8.5% 7.5% 7.0% 5.5% 3.5% 6.6% 0.02
4 68 A 13.5% 22.5% 29.0% 28.5% 22.5% 19.5% 22.6% 0.06
B 19.5% 30.0% 30.0% 22.5% 18.5% 17.0% 22.9% 0.06
C 17.5% 28.5% 27.5% 19.5% 12.0% 11.5% 19.4% 0.07
5 90 A 14.0% 22.0% 34.0% 35.5% 21.0% 10.5% 22.8% 0.10
B 26.0% 35.0% 44.0% 38.5% 24.5% 16.5% 30.8% 0.10
C 51.0% 55.5% 51.5% 47.5% 36.5% 11.5% 42.3% 0.16

Thickness measurements for the square drawpiece spun by Method 2

Height (mm) Measurement PRT m s
5 A 9.3% 14.7% 13.3% 13.3% 12.7% 0.02
B 0.0% 7.3% 6.0% 8.0% 5.3% 0.04
15 A 39.3% 50.7% 45.3% 38.0% 43.3% 0.06
B 26.7% 36.7% 39.3% 40.0% 35.7% 0.06
30 A 44.7% 68.0% 10.7% 6.7% 32.5% 0.29
B 45.3% 50.0% 51.3% 49.3% 49.0% 0.03

Strength of material depending on angle-to-rolling direction

Angle (°) Rp0.2 (MPa) Rm (MPa) A80mm (%)
0 37.0 72.7 47.2
45 38.6 78.9 46.7
90 37.5 68.9 53.3
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