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Forces in Winding mandral

1 Winding force

1.1 Maximum winding tension: N 1.5

Distance betwn bobin support to Tension force mm 14 Aprox

Bobin support distance mm 5.68

Maximum moment load Nmm 21

Maximum load at clamp bottom N 3.697183Factor for dynamic effect (Factor 2) N 7.394366

Safy factored load (Factor 2) N 14.78873

2 Wire cutting force

Wire dia mm 0.15

Strength N/mm2 297

Cutting load N 5.245763

Dynamic force ( factor 2) N 10.49153

Safty factor (factor 2) N 20.98305

Moment distance mm 15.8

Moment Nmm 331.5322

Support distance mm 15.49Load on clamp N 21.40298

3 Maximum Load Cutting load

Angle Deg 84

Cos 84 deg 0.1045

Sin 84 deg 0.9945

Horizontal load 2.236612

Load on Pin 21.28527

Load due to Wedge action

Wedge angle Deg 15

Cos 15 deg 0.9659

Sin 15 deg 0.2588

Normal reaction 5.539092

Coeficient of friction 0.1

Load 0.553909

0.573464

Total load 2.810076

Leaver moment

Distance mm 16.8

Moment Nmm 47.20928

Return spring load N 10

DistancePivote to load mm 16.8

Pivote to return spring mm 6.5

Pivote to return support mm 6.5

Total Anti clock moment Nmm 112.2093

Load at support N 17.26297

Two side load N 34.52593

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Load on planger N 29.89946

Required spring load N 30

Frictional loss N 33.33333

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Spring design Spring design

Doil OD Do mm 15.5 Doil OD Do mm

Axial load P1 N 50 Axial load P1 N

Axial load P2 N 70 Axial load P2 N

Length L1 mm 45 Length L1 mm

Length L2 mm 40 Length L2 mm

Spring rate Q n/mm 4 Spring rate Q n/mmFree length of active coils Lfa mm 57.5 Free length of active coil Lfa mm

Coil pitch p mm 3.536789 Coil pitch p mm

Free length Total coils Lf 61.5 Free length Total coils Lf

Moduls of rigidity G N/mm2 80000 Moduls of rigidity G N/mm2

Diflection Y mm 12.5 Diflection Y mm

Coil mean dia D mm 13.5 Coil mean dia D mm

Spring index C 6.75 Spring index C

Wire dia d mm 2 Wire dia d mm

No active torns na Nos. 16.25768 No active torns n Nos.

Total No. of turns n Nos. 18.25768 Total No. of turns n Nos.

Whole correction factor Ws 1.221546 Whole correction factor Ws

Solid Height Ls mm 36.51537 Solid Height Ls mmSolid diflection Ys mm 24.98463 Solid diflection Ys mm

Solid load N mm 99.93853 Solid load N mm

Wire strength N/mm2 1450 Wire strength N/mm2

Stress S N/mm2 524.5968 Stress S N/mm2

Spring design Spring design

coil OD Do mm coil OD Do mm

Coil ID Di mm 11.5 Coil ID Di mm

Wire dia d mm 2 Wire dia d mm

Coil mean dia D mm 13.5 Coil mean dia D mm

Free length Lf mm 64 Free length Lf mm

No active torns na Nos. 16 No active torns na Nos.

Total No. of turns n Nos. 18 Total No. of turns n Nos.

Length L1 mm 40 Length L1 mm

Length L2 mm 45 Length L2 mm

Diflection Y1 mm 24 Diflection Y1 mm

Diflection Y2 mm 19 Diflection Y2 mm

Solid difflection Ys 28 Solid difflection Ys

Moduls of rigidity G N/mm2 80000 Moduls of rigidity G N/mm2

Spring rate Q n/mm 4.064421 Spring rate Q n/mm

Spring index C 6.75 Spring index C

Whole correction factor Ws 1.221546 Whole correction factor Ws

Solid diff. load Ps N 113.8038 Solid diff. load Ps N

Load at Y1 P1 N 97.54611 Load at Y1 P1 NLoad at Y2 P2 N 77.224 Ok Load at Y2 P2 N

Solid Height Ls mm 36 Ok Solid Height Ls mm

Stress (solid diff.) Ss N/mm2 597.3782 Ok Stress (solid diff.) Ss N/mm2

Load

L1.

L2

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5

8

10

13.798

12.121

1.19260620.506

1.607426

22.306

80000

6.708

4.4

7.333333

0.6

12.75704

14.75704

1.202285

9.45422611.05177

13.18041

1450

822.0046

5

3.8

0.6

4.4

22.5

13

16

12.98

11.329

9.52

11.171

12.9

80000

1.170317

7.333333

1.202285

15.09709

11.14142 Ok13.07361 Ok

9.6 Ok

941.5398 Ok