Gearing Calculation of Carding Machine: Easy and Simple 2 Formula

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Gearing Calculation of Carding

Raw cotton fibers are transformed into a continuous and uniform web through the use of a cotton carding machine in the initial stages of textile processing. Two critical aspects of cotton carding are discussed in this study: motion transfer diagrams and draft calculations. A motion transfer diagram reveals the intricate movements within the machine, while a draft calculation reveals how fibers attenuate and elongate during the carding process. In combination, these analyses provide a comprehensive understanding of the carding machine’s functionality and help improve yarn quality and efficiency by optimizing carding operations. Here, I tried my best to present gearing calculation of carding machine easy and simple way.

Formula for Gearing Calculation of Carding:

Below two formula is require for gearing calculation.

Gearing Diagram of Carding Machine:

Different pulley diameters and Number of wheel teeth of carding machines:

Parts name	Diameter/Teeth	Parts name	Diameter/Teeth
A=Motor pulley	4.125 inch	O= Feed roller wheel	17
B= Cylinder pulley	23 inch	P= Carrier wheel
C= Cylinder of under pulley	19 inch	Q= Lap roller wheel	48
D= Taker-in pulley	7 inch	R & S= Carrier wheel
E= Taker-in of under pulley	7 inch	T= Calendar roller block wheel	28
F= Slow-motion pulley	10.25 inch	U1 & U2= Pair calendar roller wheel
G= Slow-motion stand wheel	32	V= Calendar under wheel	32
H= Compound carrier wheel	112	W= Short shaft wheel	15
I= Burro wheel	32	X= Drive wheel to upright shaft	20
J= Doffer wheel	180	Y= Upright shaft med bevel wheel	20
K= Doffer of under bevel wheel	24	Z= Upright shaft top bevel wheel	20
L= Cross shaft bevel wheel	34	A1 & A2= Coiler calendar roller pair wheel	20
M= Change pinion	20	B1= Coiler calendar roller wheel	20
N= Plate wheel	120

Some important roller’s diameter of carding machine:

Roller name	Diameter (inch)
Cylinder	50
Taker-in	9
Feed roller	2.5
Lap roller	6
Doffer	27
Calendar roller	4
Coiler calendar roller	2
RPM of motor	955 RPM

Gearing Calculation of Carding:

Draft calculation:

The action of reducing the thickness or linear density of the feed material by drawing is known as drafting.

RPM and Surface Speed:

Basically, RPM (Revolutions per minute) refers to how many rotations a rotating object makes in one minute. Surface speed refers to how fast something moves on its surface.

Lap Roller RPM and Surface Speed:

Feed Roller RPM and Surface Speed:

Taker-in RPM and Surface Speed:

Cylinder RPM and Surface Speed:

Doffer RPM and Surface Speed:

Calendar RPM and Surface Speed:

Coiler Calendar RPM and Surface Speed:

By investigating cotton carding machines’ motion transfer diagram and draft calculation, we can gain a deeper understanding of gearing calculation of carding machine. By laying the groundwork for advancements in technology, operational strategies, and quality control within cotton carding operations, this study contributes valuable insights to the industry’s quest for precision and efficiency.

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Reference:

• Chowdhury, M. F. (2016). Manual of short staple spinning. Dhaka: Granthanir Prokashoni.
• Hossain, M. S. (2014). Introduction to Textile Engineering. Dhaka: Books Fair Publications.
• Kadolph, S. J. (2006). Textiles. New Delhi: Pearson Education.
• Karim, E. A. (2010). Textile Calculation. Dhaka: Prime Publications.

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