INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 06, 2025
https://www.academicpublishers.org/journals/index.php/ijai
page 1250
Improving Product Quality through the Control of Technological Parameters of the Saw
Ginning Machine
Authors:
Berdaliyeva Mohlaroyim Abdulhamid qizi
PhD Student, Namangan Institute of Engineering and Technology
Sarimsakov Olimjon Sharipjanovich
Doctor of Technical Sciences, Professor, Namangan Institute of Engineering and Technology
Abstract:
This study identifies the relationship between the rotational speed variations of a newly profiled
saw and saw cylinder with the machine’s performance, seed damage, and fiber quality (impurity
accumulation). The research was conducted on a DP-30 laboratory stand using cotton samples of
the "Yoleta" and "R3" varieties. The input parameters considered were the saw tooth height, pitch,
and rotational speed. Output parameters included fiber productivity, seed damage, and fiber
impurity indicators. The study found that productivity increased with greater tooth size and
rotational speed, while seed damage remained relatively stable.
Keywords:
saw gin, saw tooth, rotational speed, seed damage, fiber impurity, productivity,
frequency converter
Introduction:
In recent years, scientific research has been conducted to improve the efficiency of fiber separation
in mechanical cotton ginning processes by changing the geometric parameters of the saw (tooth
height and pitch) and its rotation speed. Such studies aim to reduce seed damage, control fiber
impurities, and optimize energy consumption. A detailed study of the technological aspects of
fiber separation enables the improvement of machine design, introduction of new saw profiles, and
the development of intelligent control systems. This thesis experimentally examines the impact of
newly profiled saw teeth and changes in rotational speed on key indicators such as product quality
(fiber impurity), production efficiency (productivity), and seed damage. The research was
conducted on a DP-30 laboratory stand with cotton samples of the "Yoleta" and "R3" varieties.
Based on the results, important conclusions were drawn to optimize machine parameters for
improved product quality and production efficiency.
Research
Methods
and
Objects:
Optimizing the parameters of saw ginning machines in the initial cotton processing stage is crucial
for ensuring fiber quality and product yield. Studies based on newly profiled saws provide
opportunities to develop effective technologies that meet current requirements. The main
objectives of the conducted research were:
1. To determine the influence of new saw profile parameters and rotational speed.
2.
To
measure
machine
productivity,
seed
damage,
and
fiber
impurity.
3. To select optimal tooth parameters and speed modes.
The experiment was conducted on a DP-30 laboratory stand using “Yoleta” and “R3” cotton
varieties
with
the
following
input
parameters:
•
x₁
–
tooth
pitch:
2.35
mm
and
2.97
mm
•
x₂
–
tooth
height:
1.3
mm
and
2.2
mm
• x₃ – rotation speed: 550 and 850 rpm
Output
parameters:
•
y₁
–
productivity
(kg/saw/hour)
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 06, 2025
https://www.academicpublishers.org/journals/index.php/ijai
page 1251
•
y₂
–
seed
damage
(%)
• y₃ – fiber impurity (%)
Research
Results:
1.
With
saw
teeth
height
1.3
mm
and
pitch
2.35
mm:
•
n
=
550
rpm:
y₁
=
1.29;
y₂
=
7.1%;
y₃
=
3.05%
• n = 850 rpm: y₁ = 1.44; y₂ = 7.0%; y₃ = 3.15%
2.
With
saw
teeth
height
2.2
mm
and
pitch
2.97
mm:
•
n
=
550
rpm:
y₁
=
2.36;
y₂
=
7.03%;
y₃
=
3.2%
• n = 850 rpm: y₁ = 2.93; y₂ = 7.01%; y₃ = 3.09%
Conclusion:
Changes in the geometric parameters of the saw teeth (height and pitch) significantly affect
machine productivity, seed damage, and fiber impurity accumulation. Specifically, increasing the
saw tooth height from 1.3 mm to 2.2 mm and pitch from 2.35 mm to 2.97 mm resulted in increased
overall productivity from 1.29 kg/hour to 2.93 kg/hour. This volumetric growth is attributed to the
expanded mechanical capability of the saw to grip and pull multiple fibers simultaneously. As the
rotational speed increased (n = 550 → 850 rpm), the linear speed of the saw also increased (9 m/s
→ 14 m/s), positively impacting productivity by enabling more fiber to be separated in a given
time. However, in some cases, a slight increase in impurity content was observed at higher speeds,
suggesting that excessively high speeds may negatively affect the cleaning efficiency.
Seed damage indicators ranged from 6.8% to 7.3%, with no significant difference between speeds
and tooth sizes, indicating stable operation of the saw gin when properly adjusted. Fiber impurity
levels ranged from 3.05% to 3.28%, depending on saw tooth parameters and speed. This result
indicates that high-toothed, high-speed saws may not fully ensure impurity separation, suggesting
the need for additional cleaning stages.
Optimal
parameters
under
experimental
conditions:
•
Saw
tooth
height
–
2.2
mm
•
Tooth
pitch
–
2.97
mm
•
Rotational
speed
–
850
rpm
• Linear speed – 14 m/s
At these settings, the highest productivity (2.93 kg/hour) was achieved, with stable seed damage
(7.01%) and acceptable impurity levels (3.09%).
Based on the experiment results, it is recommended to correctly select saw geometry and precisely
control rotational speed using a frequency converter when improving machine design. This ensures
energy efficiency, product quality, and a flexible technological process adapted to demand. This
study also identified the potential for implementing intelligent control systems in saw ginning
machines. For example, mechanisms could be introduced to automatically adjust speed based on
fiber cleanliness using sensors.
REFERENCES:
1. Abdurahmonov T. “Cotton Cleaning Processes and Technology”. – Tashkent: Ilm Ziyo, 2020.
–
230
pages.
2. Rustamov A.R. “Cotton Fiber Quality and Its Determination Methods”. – Tashkent: O‘qituvchi,
2018.
–
180
pages.
3. Yang Y., Calhoun J., & Wanjura J. (2020). Influence of saw speed on ginning performance and
fiber
damage.
//
Journal
of
Cotton
Science.
– Vol. 24(3), pp. 312–319.
4. ASTM D5867-05: Standard Test Methods for Measurement of Physical Properties of Cotton
Fibers.
–
ASTM
International,
2015.
5. ISO 4911: Textiles – Cotton fibres – Determination of impurity content. – ISO, Geneva, 2016.
INTERNATIONAL JOURNAL OF ARTIFICIAL INTELLIGENCE
ISSN: 2692-5206, Impact Factor: 12,23
American Academic publishers, volume 05, issue 06, 2025
https://www.academicpublishers.org/journals/index.php/ijai
page 1252
6. Sarimsakov O.Sh., Aliyev A.M. “Problem: Determining Optimal Parameters of the Saw in
Cotton Ginning” // Engineering and Agriculture, Moscow, 2021, No. 3, pp. 41–46.
7. Tursunov I.S., Muminov A.K. “Optimization of Ginning Process Based on Saw Geometry” //
European Journal of Engineering Research and Science, 2022, Vol. 7(5), pp. 435–439.
8. Resolution No. 144 of the Cabinet of Ministers of the Republic of Uzbekistan (2020) –
"Standards and Technological Requirements for Initial Cotton Processing".
