MODERNIZATION OF THE ROLLED GIN REGENATION SECTION

2021 ◽  
Vol 4 (2) ◽  
pp. 25-34
Author(s):  
M.M. Ochilov ◽  
◽  
O.Ya. Kholmurodov ◽  
Zh.Sh. Mardonov
Keyword(s):  
Blade Forging ◽  
Roller Machine

Methods for improving the area of regeneration of roller gin in the process of processing long-staple cotton have been studied. At present, in the process of processing long-staple cotton of the selection variety Surkhan-9 in the regeneration section of the DV-1M roller machine, the choice of cell sizes for removing exfoliated seeds from the fiber is being studied and substantiated by experimental methods.Keywords: long fiber, roll gin, regeneration, variety, pile drum, mesh, fixed blade, forging drum, grill

scholarly journals Uniform Pressing Mechanism in Large-Area Roll-to-Roll Nanoimprint Lithography Process

2021 ◽  
Vol 11 (20) ◽  
pp. 9571
Author(s):  
Ga Eul Kim ◽  
Hyuntae Kim ◽  
Kyoohee Woo ◽  
Yousung Kang ◽  
Seung-Hyun Lee ◽  
...  
Keyword(s):  
Contact Pressure ◽  
Nanoimprint Lithography ◽  
Applied Pressure ◽  
Machine Learning Techniques ◽  
Conventional System ◽  
Large Area ◽  
High Productivity ◽  
Roll To Roll ◽  
Learning Techniques ◽  
Roller Machine

We aimed to increase the processing area of the roll-to-roll (R2R) nanoimprint lithography (NIL) process for high productivity, using a long roller. It is common for a long roller to have bending deformation, geometric errors and misalignment. This causes the non-uniformity of contact pressure between the rollers, which leads to defects such as non-uniform patterning. The non-uniformity of the contact pressure of the conventional R2R NIL system was investigated through finite element (FE) analysis and experiments in the conventional system. To solve the problem, a new large-area R2R NIL uniform pressing system with five multi-backup rollers was proposed and manufactured instead of the conventional system. As a preliminary experiment, the possibility of uniform contact pressure was confirmed by using only the pressure at both ends and one backup roller in the center. A more even contact pressure was achieved by using all five backup rollers and applying an appropriate pushing force to each backup roller. Machine learning techniques were applied to find the optimal combination of the pushing forces. In the conventional pressing process, it was confirmed that pressure deviation of the contact area occurred at a level of 44%; when the improved system was applied, pressure deviation dropped to 5%.

Physical modeling of blade forging

2000 ◽  
Vol 99 (1-3) ◽  
pp. 141-144 ◽  
Author(s):  
Liu Yuli ◽  
Du Kun ◽  
Zhan Mei ◽  
Yang He ◽  
Zhang Fuwei
Keyword(s):  
Physical Modeling ◽  
Blade Forging

Research on the Formation of Dimensional Chain for Thread Hob of Double-Roller Machine Rolling Thread by Axial Feed

2014 ◽  
Vol 621 ◽  
pp. 51-56
Author(s):  
Wen Xing Li ◽  
Meng Jia
Keyword(s):  
Economic Benefit ◽  
Dimensional Chain ◽  
Affecting Factor ◽  
Roller Machine

The affecting factor of thread precision was found out through the analysis of the formation of dimension chain when thread hob (cutlery) of double-roller machine rolls thread by axial feed, methods and measures of settlement was presented, which improve the precision of rolling thread, the grade of product and economic benefit of enterprise.

scholarly journals RANCANG BANGUN RASIO GEAR TERHADAP KECEPATAN PENGEROLAN PIPA

Infotekmesin ◽  
2018 ◽  
Vol 9 (01) ◽  
pp. 47-52
Author(s):  
Agus Suprihadi ◽  
Amin Nur Akhmadi ◽  
M. Taufik Qurohman
Keyword(s):  
Plastic Deformation ◽  
Basic Principle ◽  
Deep Drawing ◽  
Shape Change ◽  
Wire Drawing ◽  
Power Source ◽  
Type B ◽  
Work Cycle ◽  
Roller Machine ◽  
Shape Changes

The basic principle of metal formation is a process that is done by giving shape changes on the workpiece. This shape change can be done by providing an outer force resulting in plastic deformation. The application of this metal formation can be seen in some examples such as rolling, bending, forging, extruding, wire drawing, deep drawing, and so on. In the process of formation of this metal is also used tooling (bending) whose function gives style to the workpiece, and direct the change of shape. Knowing the speed of the power forwarding system on the pipe roller machine starting from the power source until power is used as the work cycle, and to know the type of belt, the length of the belt used on the pipe roll machine. From this research can be concluded that: (1) In bending the thickness of 4 mm pipe the required power is 582.4 N with power of 0.4 hp then the motor required 1 hp, the diameter of the pulley used is 2 inch for motoran and 8 inch for the pivot reducer, belt used type B with length 44 inch, (2) To reach the rotation of ± 2 rpm ie pulley diameter used with the ratio of pulley ratio is 1: 4, the reducer is used with the value I = 60 and sprocket ratio 1: 3.

scholarly journals Definition of parametric correlation mechanism of shaver-roller diameter with diameter of cylindrical wheel with circular tooth worked by it

2018 ◽  
Vol 2018 (9) ◽  
pp. 39-45 ◽  
Author(s):  
Андрей Маликов ◽  
Andrey Malikov ◽  
Андрей Сидоркин ◽  
Andrey Sidorkin ◽  
Станислав Рахметов ◽  
...  
Keyword(s):  
Roller Diameter ◽  
Roller Machine ◽  
Definition Of

A description of the algorithm for computation and synthesis of a shaver-roller machine engagement with a cylindrical cog-wheel with circular teeth (CCCT) for the definition of a tool rational diameter with respect to the diameter of the wheel worked by it is shown.

scholarly journals Synthesis of a ten-link tooth-lever differential roller transmission mechanism

2021 ◽  
Vol 304 ◽  
pp. 02010
Author(s):  
Abdusalam Abdukarimov ◽  
Sanjarbek Madaminov ◽  
Asrorbek Abdullajonov
Keyword(s):  
Scientific Research ◽  
Transmission Mechanism ◽  
Dynamic Synthesis ◽  
Transmission Mechanisms ◽  
Analytical Review ◽  
Line Passing ◽  
Roller Machine ◽  
Differential Transmission ◽  
Center Distance ◽  
Variable Center

This article deals with the synthesis of a ten-link tooth-lever differential transmission mechanism. The article contains an analytical review of modern scientific research on the synthesis of tooth-lever differential transmission mechanisms of roller machines with a variable center distance of the working shafts; a method for the synthesis of toothlever differential transmission mechanisms of roller machines with a variable center distance of the working shafts described on the example of a ten-link tooth-lever differential transmission mechanism; the conditions for the synthesis of the mechanism given and substantiated when this mechanism is used in a roller machine; one of its working shafts has the ability to rotate about its own axis, and the second working shaft, in addition to rotation about its own axis, has the ability to move relative to the first working shaft along a line passing through the center the axes of rotation of both working shafts; the geometric synthesis of the tooth and lever contours of the mechanism, the dynamic synthesis of the mechanism, taking into account the angles of pressure between the lever link of the lever contour of the mechanism, which allows us to determine the optimal working position of the mechanism where the angles of pressure are within acceptable limits; the graphs of changes in the angles of pressure between the links of the lever contour of the mechanism, plotted depending on its position.

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