Saturday, August 24, 2019

SPECTOGRAM ANALYSIS ON SPINNING MACHINES



SPECTROGRAM

Normally, in the yarns mass curve some of irregularities are there.  But in that some of abnormal curves are there, Those abnormal  irregularities are called as faults.

        When a fault repeats it self at uniform intervals it is termed as a periodic variation. As several rotating parts like rollers, gears, pinions, eccentric front roller in ring frames. The wave length of the periodic variations can be read directly from the spectrogram.

What is SPECTROGRAM:

          The spectrogram indicates periodic and practically periodic faults in yarns, rovings and slivers.

          The spectrogram is a concise illustration of variation within the specimen, graded-according to the wave length of variation.

          The amplitude represents the relative frequency and intensity of each wave length class.


NORMAL SPECTROGRAM




















1 cm
 
10 cm
 
50 cm
 
1 m
 
5 m
 
10 m
 
50 m
 
100 m
 
 















There are two types of defective spectrograms.

1. Chimney type spectrogram
 
















A chimney type spectrogram is normally due to a mechanical fault such as eccentric roller/gear, improper meshing, missing of teeth in gear wheels etc.

This type of spectrogram fault can be analysed  by the following method.

PEAK OR AMPLITUDE :

            The maximum or minimum value from the mean level is called amplitude. Amplitude denotes the extent of mass variation from the average level. The amplitude is generally expressed as the percentage of the mean value. Position of the peaks varies depending on draft and dimension of rollers or aprons.

            If peak position shifts from test to test it is due to defective flyer or spindle. Peak length must be more than half of base length.


Peak  = Delivery in meter per min
             Rpm of defective part






2. Hill type spectrogram




















1 cm
 
10 cm
 
50 cm
 
1 m
 
5 m
 
10 m
 
50 m
 
100 m
 
 











       A hill type Spectrogram is normally due to improper settings in the drafting zone, improper pressure applied by the top rollers, too many short fibers in the material etc.

These type of spectrograms can be analysed by the following method.

CAUSES OF DRAFTING WAVES :

            Drafting waves primarily arise due to lack of control on fibers in the drafting zone. The basic cause for the formation of drafting waves is so called  “floating fibers “ which are fibers not gripped by any roller pairs in the drafting zone. In addition, the factors that increase the amplitude of drafting waves like improper roller setting, improper roller pressure and high draft.

Type : 2
Law of addition of irregularity :

            If CV are squares they are of additive or substractive quantity. The V1 is CV  % of sliver or roving which is feed to machine. Thus, this helps to detect the performance of the machine.

Wave length is obtained from the following equation.

l = d x Õ x V
Where,
            l = Wave length of the periodical variation in inches ( cm )
           
d = Diameter of the roller presumes to be defective in inches ( cm )
           
            Õ = 22 / 7 or 3.14
           
            V = Draft between the faulty part and the out put of the material from the
      machine.

EXAMPLE :

Drawing Sliver : Periodical variation with20 inch wave length.

Diameter          : 1 ¼ “ = 32 mm = 3.2 c.m


The draft up to the faulty part can be determined :

            V = l / Õ x d   = 20 ¸ í 3.14 x 1 ¼ ý       = 5.09

 














The fault calculated above may be caused by the 3rd pair of rollers.

Type : 3
TACHOMETER METHOD :

            The tachometer method is very simple . Wave length is obtained by


l = c / nf

Where,
            l = Wave length of the periodical variation in inches ( cm )
           
            c = Delivery speed in m/min. or cm/min.

            nf = R.P.M.       

            The above equation may be resolved ton give the very useful “TACHOMETER FORMULA.”      



RPM of defective part        = Delivery Speed ( in / min )
                                                          wave length ( in )


by  calculating the RPM of defective wheel, taking the tachometer and see which wheel is having that speed, And that wheel is defective.


Type : 4
DRAFTING WAVES :

            Drafting waves and poor fiber control is created in the drafting zones: such deficiencies are shown as ” hills”.

            The relation ship between the average wave length of drafting waves and the corresponding drafting zone was found based on intensive investigation as follows.
            Immediately after the drafting zone in which they are caused, the drafting waves shown and average wave length, which corresponds to approximately 2.5 to 3 times the average staple length i.e. :
                                                                                              _
lm = K.t
Where,
            l mo = Average Wave length immediately after the faulty drafting zone.

            K      = 2.5 to 3 ( value gained by experience )
            _
            t      = Average staple length of raw stock used ( use 7/8 “ for carded cotton and
1” for combed cotton


EXAMPLES OF FAULTS IN THE BACK PROCESS :

CARDS, FREQUENT FAULTS :
y        Un even wear of card clothing,
y        Damaged card clothing,
y        Eccentric cylinder and doffer,
y        Worn belts,
y        Slippage in belt drives,
y        Contaminated gear wheels,
y        Worn bearings,
y        Excessive filling of card clothing,
y        Rough surfaces accumulated fibers,
y        Unsuitable setting of flats,
y        Eccentric worker rollers,
y        general setting (too wide, too narrow ),
y        Setting across card not identical,
y        Excessive filling of cans,
y        Damaged cans.
y         
RSB - 851

CREEL DRAFT CHANGE WHEEL     W1 =
146.7


WEB TENSION CHANGE WHEEL     W3 =
57.8


BREAK DRAFT CHANGE WHEEL     W4 =
38.3


CAN PLATE SPEED CH.WHEEL       W5 =
34


TENS.   DRAFT CHANGE WHEELS  W8  =
77


INTAKE TENSION CHANGE WHE   W9  =
57


MAIN DRAFT CHANGE WHEEL      NW1 =
52


MAIN DRAFT CHANGE WHEEL     NW2 =
66


COILER PLATE TUBE SPEED C.W  DW1 =
366


COILER PLATE TUBE SPEED C.W  DW2 =
96


COILER CHANGE GEAR                 DW3 =
66.2





SL.NO
SOURCE ( OR) PART DEFECTIVE OR PERIODIC FAULT
CALCULATION FOR FAULT LENGTH IN C M
WORKED OUT EXAMPLE IN CM
1
CREEL ROLLER AND 40T WHEEL
0.0137*W3*W1*NW2/NW1*W8/W9
199.17
2
W1T,60T WHEEL
0.020553*W3*W1*NW2/NW1*W8/W9
298.80
3
FEED ROLLER D5
1.233156*W3*W1*NW2/NW1*W8/W9
17928.02
4
W8T, 48.2T WHEEL
0.990636*W3*NW2/NW1*W8/W9
98.17
5
T&G ROLLER
2.2964742*W3*NW2/NW1*W8/W9
227.58
6
W9 INTAKE TENSION ROLL
0.9906359*W3*NW2/NW1*W9
4142.45
7
NW2
0.990636*W3*NW2/NW1
72.67
8
NW1
0.990636*W3
57.25
9
100T ROLLER
0.742977*W3
42.94
10
38T,40T,114.6DIA
0.28233*W3
16.31
11
3rd ROLLER
0.990636*W3*NW2/NW1
72.67
12
MIDDLE ROLLER(2ND ROLL)
29.71907*W3*NW2/NW1*1/W4
56.92
13
1st ROLLER,89.1DIA WHEEL
0.219508*W3
12.68
14
W3 AND DW3 WHEEL
0.3454*W3
19.96
15
DRAW OFF ROLLER
17.27
17.27
16
COILER PLATE TUBE
31.086 *W3/DW3*DW1/DW2
103.47
17
CAN PLATE AND W5 WHEEL
481.02476*W3/DW3
419.98
18
133 WHEEL
63976.2936*W3/DW3*1/W5
1642.89



COUNT   100's/2 CW

SIMPLEX

1
DRAFT CHANGE WHEEL
W V 1  =
39

2
DRAFT COMBINATION WHEEL 
P  =
20

3
DRAFT COMBINATION WHEEL
r   =
130

4
TWIST CHANGE WHEEL   
WZ  =
66

5
TWIST COMBINATION  WHEEL                                  
g   =
26

6
TWIST COMBINATION  WHEEL                                   
h    =
76

7
LIFTER WHEEL                                                        
WS  =
28

8
LIFTER COMBINATION WHEEL                       
e  =
65

9
LIFTER COMBINATION WHEEL                        
f  =
37

10
BREAK DRAFT CHANGE WHEEL             
W V 11  =
60

11
CREEL DRAFT CHANGE WHEEL              
WE  =
46

12
DIA OF FRONT ROLLER                                  
D  =
27

13
DIA OF BOBBIN                                                          



14
TOP APRON DIA                                                
L1  =
41.5

15
BOTTOM APRON DIA                                     
L2  =
97






SL.NO
SOURCE ( OR) PART DEFECTIVE OR PERIODIC FAULT
CALCULATION FOR FAULT LENGTH IN mm
WORKED OUT EXAMPLE IN mm

1
102WHEEL
3358.8173*g/h
1149

2
wz, g wheels
32.92958*g/h
11

3
h, 26 wheels
32.92958
33

4
80 wheel
101.32178
101

5
50 wheel
63.32611
63

6
72 wheel
91.189598
91

7
67, I st( front) roller,p wheel
84.857
85

8
r ,WVI GEAR
r/p*84.857
552

9
s=45T,m=25T,L=69T,3rd roller
r/p*1/WVI*5855.133
976

10
40T  GEAR
r/p*1/WVI*9368.2128
1561

11
 II ROLLER, N=23
r/p*1/WVI*5386.7223
898

(a)
TOP APRON
5386.7223*r/p*1/WVI*L1
3726

(b)
BOTTOM APRON
5386.7223*r/p*1/WVI*L2
8709

12
WVII,105T GEAR
r/p*1/WVI*13661.976
2277

13
C=22,D=35 GEAR
r/p*1/WVI*1/WVII*478169.18
1328

14
40T CARRIER GEAR
r/p*1/WVI*1/WVII*869398.48
2415

15
b=18, 4th roller
r/p*1/WVI*1/WVII*391229.31
1087

16
we, 15/15 , 23 wheels
r/p*1/WVI*1/WVII*we*13661.976
1746






17
1st creel roller 29,29 wheel
r/p*1/WVI*1/WVII*we*17225.969
2201

18
15 worm wheel
r/p*1/WVI*1/WVII*we*8909.9844
1138

19
2nd creel roller 30 wheel
r/p*1/WVI*1/WVII*we*17819.968
2277

20
3rd creel roller 31 wheel
r/p*1/WVI*1/WVII*we*18413.966
2353


Spindle Side Drive



1
110 wheel
1/ wz*g/h*3622.254
19

2
116 wheel
1/ wz*g/h*3819.8342
20

3
80 wheel, 36 wheel
1/wz*g/h*2634.3665
14

4
38 wheel,spindle
1/wz*g/h*2780.72
14














COUNT   60's/1 CW
SIMPLEX
1
DRAFT CHANGE WHEEL                                 
W V 1  =
50
2
DRAFT COMBINATION WHEELS            
P  =
20
3
DRAFT COMBINATION WHEELS                
r   =
130
4
TWIST CHANGE WHEEL                                   
WZ  =
62
5
Twist Combination  Wheels                              
g   =
29
6
TwIST combination  WHEELS                         
h    =
73
7
LIFTER WHEEL                                                      
WS  =
36
8
LIFTER COMBINATION WHEEL                
e  =
65
9
LIFTER COMBINATION WHEEL                 
f  =
37
10
BREAK DRAFT CHANGE WHEEL         
W V 11  =
60
11
CREEL DRAFT CHANGE WHEEL           
WE  =
46
12
DIA OF FRONT ROLLER                              
D  =
27
13
DIA OF BOBBIN                                               


14
TOP APRON DIA                                              
L1  =
41.5
15
BOTTOM APRON DIA                                  
L2  =
97




SL.NO
SOURCE ( OR) PART DEFECTIVE OR PERIODIC FAULT
CALCULATION FOR FAULT LENGTH IN mm
WORKED OUT EXAMPLE IN mm
1
102WHEEL
3358.8173*g/h
1334
2
wz, g wheels
32.92958*g/h
13
3
h, 26 wheels
32.92958
33
4
80 wheel
101.32178
101
5
50 wheel
63.32611
63
6
72 wheel
91.189598
91
7
67, I st( front) roller,p wheel
84.857
85
8
r ,WVI GEAR
r/p*84.857
552
9
s=45T,m=25T,L=69T,3rd roller
r/p*1/WVI*5855.133
761
10
40T  GEAR
r/p*1/WVI*9368.2128
1218
11
 II ROLLER, N=23
r/p*1/WVI*5386.7223
700
(a)
TOP APRON
5386.7223*r/p*1/WVI*L1
2906
(b)
BOTTOM APRON
5386.7223*r/p*1/WVI*L2
6793
12
WVII,105T GEAR
r/p*1/WVI*13661.976
1776
13
C=22,D=35 GEAR
r/p*1/WVI*1/WVII*478169.18
1036
14
40T CARRIER GEAR
r/p*1/WVI*1/WVII*869398.48
1884
15
b=18, 4th roller
r/p*1/WVI*1/WVII*391229.31
848
16
we, 15/15 , 23 wheels
r/p*1/WVI*1/WVII*we*13661.976
1362




17
1st creel roller 29,29 wheel
r/p*1/WVI*1/WVII*we*17225.969
1717
18
15 worm wheel
r/p*1/WVI*1/WVII*we*8909.9844
888
19
2nd creel roller 30 wheel
r/p*1/WVI*1/WVII*we*17819.968
1776
20
3rd creel roller 31 wheel
r/p*1/WVI*1/WVII*we*18413.966
1835

Spindle Side Drive


1
110 wheel
1/ wz*g/h*3622.254
23
2
116 wheel
1/ wz*g/h*3819.8342
24
3
80 wheel, 36 wheel
1/wz*g/h*2634.3665
17
4
38 wheel,spindle
1/wz*g/h*2780.72
18






















LR E7/4 COMBER
  
count :60/1 CW


NOIL %
22

    COUNT CHANGE GEAR( N)
50

    MATING WHEEL (A)
70

    COILER GEAR  (B)
18


              (C)
2


              (D)
53

    WEB TRAY DRAFT CHANGE GEAR (V)
48

    TABLE DRAFT CHANGE GEAR (T)
47

    FEED CHANGE GEAR (Z)
83









SL.NO
SOURCE OR PART DEFECTIVE OR PERIODIC FAULT
CALCULATION FOR FAULT LENGTH IN C M
WORKED OUT EXAMPLE IN      C M
1
29 T GEAR
5.426 X N / A
3.88
2
140 T GEAR - DELIVERY ROLLER DRIVE



25 T GEAR  - UNICOMB



70 T GEAR



32 T BEVEL GEARS
26.758 X N / A
19.11
3
75 T GEAR & N GEAR
28.669 X N / A
20.48
4
A GEAR & C GEAR



28 T BEVEL GEAR



24 T BEVEL GEAR



B GEAR & 42 T BEVEL GEAR
28.669
28.669
5
23 T BEVEL GEAR &



COILER CALENDER ROLLER
15.7
15.7
6
CALENDER ROLLER &



38 T GEAR
22.6697
22.6697
7
62 T GEAR & 31 T BEVEL GEAR
37
37
8
66 T CARRIER GEAR
39.42
39.4
9
FRONT ROLLER & 19 T GEAR
11.349
11.4
10
2nd ROLLER & 18 T GEAR
1.486 X T X N / A
49.9
SL.NO
SOURCE OR PART DEFECTIVE OR PERIODIC FAULT
CALCULATION FOR FAULT LENGTH IN C M
WORKED OUT EXAMPLE IN      C M
11
3rd ROLLER & 18 T GEAR
1.486 X T X N / A
49.9
12
23 T CARRIER GEARS
1.9 X T X N / A
63.79
13
4th ROLLER & 24 T GEAR
1.982 X T X N / A
66.54
14
63 T CARRIER GEAR
93.654 X N / A
66.90
15
18 T BEVEL GEAR,



5 T HELICAL GEAR &



32 T BEVEL GEARS
26.758 X N / A
19.11
16
TABEL CALENDER ROLLER &



V GEAR
3.88 X V X N / A
133.03
17
40 T HELICAL BEAR
155.198 X N / A
110.86
18
81 T GEAR & 31 T GEAR
86.697 X N / A
61.93
19
39 T GEAR & 94 T GEAR
262.887 X N / A
187.78
20
100 T GEAR & 38 T GEAR
674.07 X N / A
481.48
21
Z GEAR & FEED ROLLERS &



40 T GEAR
17.738 X Z X N / A
1051.61
22
45 T CARRIER GEAR
19.956 X Z X N / A
1183.11
23
D GEAR & 36 T GEAR
28.669 X D / C
759.73
24
126 T COILER GEAR
100.343 X D / C
2659.09
25
12 T CARRIER GEAR
9.556 X D / C
253.23
26
58 T GEAR TUBE WHEEL GEAR
1662.835 X 1 / B
92.38











COMBER-E7/5A








COUNT
40/1 CK

NOIL%

18

DRAFT CHANGE GEARS




A = 44  T



B = 52  T



C = 58  T



D = 56  T

TABLE DRAFT CHANGE WHEEL
T = 140 T

TABLE BELT WHEEL
R1= 31  T,R2 = 32 T

FEED CHANGE GEAR
Z = 65  T

RATCHET WHEEL
S = 20  T

DRAFT
11.8





SL.NO
SOURCE ( OR) PART DEFECTIVE OR PERIODIC FAULT
CALCULATION FOR FAULT LENGTH IN C M
WORKED OUT EXAMPLE IN CM
1
LAP ROLLER - 13 T GEAR
4773.74 X R1/R2 X A/B X
1754.14

FEED CHANGE GEAR - Z
C/D X Z/T

2
138 T GEAR,37T GEAR
176628.5 X R1/R2 X A/B X



C/D X 1/T
998.5
3
138 T GEAR , 40T GEAR
51176.7 X R1/R2 X A/B X



C/D X 1/T
289.3
4
40T GEAR , 138T GEAR
144839.6 X R1/R2 X A/B X



C/D X 1/T
818.8
5
40T GEAR , 138T GEAR FRONT
4301.3 X R1/R2 X A/B X
24.3


C/D X 1/T

6
29T GEAR , 40T GEAR
1246.76 X R1/R2 X A/B X



C/D X 1/T
7
7
NIPPER SHAFT,UNICOMB
6147.84 X R1/R2 X A/B X

8
INDEX, 143T,15T GEARS
C/D X 1/T
34.7
9
DELIVARY ROLLER,24T WHEEL
28195.27*R1/R2*A/B*C/D*1/T
159
10
T AND R1 ,1T BEVEL WHEEL
31.169*R1/R2*A/B*C/D
24.7
11
R2,50T,22T WHEEL
31.169*A/B*C/D
25.5
12
34T,A WHEEL
21.195*A/B*C/D
17.3
13
B,C WHEEL
21.195*C/D
20.5
14
48T,27T,D WHEEL
21.195
21.2
15
36T,1T,11T ,21T WHEEL
28.26
28.3
16
COILER CALENDER ROLLER,14T WHEEL
18.8
18.8
17
BACK AND SECOND ROLLER FROM BACK,25T WHEEL
118*A/B*C/D
96.4
18
III RD& IV TH ROLLER,17T WHEEL FROM BACK
80.3*A/B*C/D
65.6
19
60T,18T WHEEL
85*A/B*C/D
69.4
20
FRONT ROLLER,17T WHEEL
10.6
10.6
21
36T,31T,52.5DIA WHEEL
15.9
15.9
22
PIECING INDEX, DETACHING ROLLER
3.8*TOTAL DRAFT
44.84



E60H





COUNT
40/1CK


NOIL%
17%


MAIN DRAFT CHANGE WHEELS
A =  30



B = 33


BREAK DRAFT CHANGE WHEEL
C = 38


FEED CHANGE GEAR 
Z = 65


RATCHET WHEEL
20


TABLE DRAFT CHANGE WHEEL    



TV
140


DRAFT
10.9





SL.NO
SOURCE ( OR) PART DEFECTIVE OR PERIODIC FAULT
CALCULATION FOR FAULT LENGTH IN C M
WORKED OUT EXAMPLE IN CM
1
LAP ROLLER,Z,22T WHEEL
154.34*TV/T*A/B*Z
206.7
2
138T,37T WHEEL
1655.24*TV/T*A/B
369.4
3
40T,138T WHEEL
479.779*TV/T*A/B
107
4
40T,138T WHEEL
130.07*TV/T*A/B
31
5
NIPPER SHAFT,UNI COMB,INDEX
194.49*TV/T*A/B
43.4
6
DELIVERY ROLLER
467.78*TV/T*A/B
104.4
7
TABLE CALENDER ROLLER
911.58*TV/T*A/B
204
8
BACK AND II ROLL FROM BACK
98.2538*A/B
108
9
III RD& IV TH ROLLER FROM BACK
2751.1*A/B*1/C
79
10
FRONT ROLLER
10.6
10.6
11
T,45T,TV WHEEL
1.0077*A/B
1.1
12
39T,28T WHEEL
39.3*A/B
43.2
13
104T,31T WHEEL
39.3
39.3
14
COILER
2118
2118
15
VERTICAL SHAFT(FOR VERTICAL ROTATION)
40.6
40.6
16
CAN
3180.6
3180.6
17
COILER CALENDER ROLLER
18.7
18.7
18
PIECING INDEX, DETACHING ROLLER
3.8*TOTAL DRAFT AT D.B
41.4


SB 2





CREEL DRAFT CHANGE WHEEL               W1
148.1


WEB TENSION DRAFT WHEEL               W3
140.2


BREAK DRAFT CHANGE WHEEL              W4
57.9


CAN PATCH DRIVE                                   W5
20


TENSION DRAFT CHANGE WHEEL        W8
81


MAIN DRAFT CHANGE WHEEL             NW1
48


                                                                NW2
56

SL.NO
SOURCE ( OR) PART DEFECTIVE OR PERIODIC FAULT
CALCULATION FOR FAULT LENGTH IN C M
WORKED OUT EXAMPLE IN CM
1
CREEL ROLLER
1.1064*W8/W3*NW2/NW1*W1
110.6
2
W1,60T WHEEL
1.6597*W8/W3*NW2/NW1*W1
165.7
3
GUIDE ROLLER
55.382*W8/W3*NW2/NW1
37.3
4
W8 WHEEL
79.996*W8/W3*NW2/NW1
53.9
5
NW2 WHEEL
2079.898*NW2*/NW1*1/W3
17.3
6
BACK ROLLER
893.21*NW2/NW1*1/W3
7.4
7
MIDDLE ROLLER
72796.44*NW2/NW1*1/W3*1/W4
10.5
8
FRONT ROLLER
1619.89*1/W3
11.6
9
COILER CALENDER ROLLER
15.7
15.7
10
COILER
1833.75*DW1/DW2*1/DW3
2035.8
11
CAN
217245.9*1/W5*1/DW3



CHERRY HARA D-600-USC

CHANGE PLACES



A=50,B=35,C=62,D=98,E=57,F=165,H=44,J=22



K=84,L=159,M=94,R=24,S=61,U=26,V=70,T=37


SL.NO
SOURCE ( OR) PART DEFECTIVE OR PERIODIC FAULT
CALCULATION FOR FAULT LENGTH IN C M
WORKED OUT EXAMPLE IN CM
1
DELEVERY ROLLER 110DIA,44T,C WHEEL
16
16
2
49T,A WHEEL
17
17
3
FRONT ROLLER, B WHEEL
17.834*B/A
12.5
4
D, E WHEEL
16.014*D/C
25.3
5
F, 40T, 95T WHEEL
16.014*D/C*F/E
73.3
6
2nd ROLLER, K, 37T WHEEL
0.16857*D/C*F/E*K
64.8
7
59T, 47T WHEEL
0.2688*D/C*F/E*K
103.3
8
3rd ROLLER, 30T WHEEL
0.17157*D/C*F/E*K
66
9
SERVO MOTOR SHAFT, J, R, H  WHEEL
0.40035*D/C*F/E*H
80.6
10
BACK ROLLER, 28T WHEEL
11.2098*D/C*F/E*H/J
4.3
11
T, S, 20T WHEEL
0.40035*D/C*F/E*H*S/R
204.9
12
TONGUE &GROVEE ROLLERS, 38T,  26TWHEELS
0.52046*D/C*F/E*H*S/R
266.3
13
GUIDE ROLLER, U, 55T WHEEL
0.4*D/C*F/E*H*S/R*U/T
204.6
14
V , 45T, CREEL ROLLER, V ROLLER SHAFT
0.007278*D/C*F/E*H*S/R*U/T*V
183.2
15
L, 77DIA, 24T BEVEL, WHEELS
0.14558*L
23.1
16
35T, 30T WHEEL
0.2123*L
33.8
17
COILER
0.615689*L
97.9
18
99DIA WHEEL
0.18711*L
29.8
19
M, 1TWORM WHEELS
0.00187*L*M
27.9
20
20T, 23T WHEELS
0.0378*L*M
565
21
CAN WHEEL
0.12494*L*M
1867.4



RSB -D- 30

CREEL DRAFT CHANGE WHEEL     W1
101.1


COILER CALENDER CHANGE WHEEL W2
48.9


WEB TENSION CHANGE WHEEL     W3
82.5


BREAK DRAFT CHANGE WHEEL     W4
66.6


CAN PATCH DRIVE              W5 
24


TENSION DRAFT CHANGE WHEELS  W8 
200


                             W9 
56


MAIN DRAFT CHANGE WHEEL      NW1 = 46
46


                             NW2 = 62
62

   
                             DW1 = 366
366


                             DW2 = 109.5
109.5


                             DW3 = 54.1
54.1


 X 
15.474

SL.NO
SOURCE ( OR) PART DEFECTIVE OR PERIODIC FAULT
CALCULATION FOR FAULT LENGTH IN C M
WORKED OUT EXAMPLE IN CM




1
CREEL ROLL AND 40T WHEEL



W1T WHEEL
1715.285*NW2/NW1*W8/W3*1/W2
16.1
2
GUIDE ROLLER, 55T WHEEL
31.187*NW2/NW1*W8/W3
130
3
W8T, W2T,110T WHEEL
72.297*NW2/NW1*W8/W3
56
4
T& G ROLLER
4678*NW2/NW1*1/W3
42.5
5
W4,52T,150T,NW2 WHEEL,BACK ROLL
3508.5*1/W3
56.7
6
100T ROLLER
4678*1/W3
42
7
NW1T,32T WHEEL
243258.5*NW2/NW1*1/W3
2187.7
8
MIDDLE ROLLER,52 DIA WHEEL
1036.2*1/W3
12.6
9
FRONT ROLLER,60 DIA WHEEL
17.3
17.3
10
W3 DIA WHEEL,DELIVARY ROLLER
983.54*1/W3*DW1/DW3
80.6
11
COILER
1970.24*X*DW3/W3
83.5
12
CAN,133T WHEEL
1333.24*1/W3
16.2

at

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