scholarly journals Efficient Design of the Sewing Machine's Shuttle Thread Tension Regulator

2020 ◽  
pp. 48-50
Author(s):  
Ganjina Shukhratzoda
Keyword(s):  
Side Surface ◽  
Entire Length ◽  
Efficient Design ◽  
Pressure Force ◽  
Sewing Machine ◽  
Thread Tension ◽  
Plate Spring

The paper presents the tension regulator of the Shuttle thread of the sewing machine, which consists of an arc-shaped plate spring, has two holes, the first for fixing the screw to the side surface of the bobbin cap and the second for the adjusting screw. In this case, the width of the plate spring along the entire length is the same. A disadvantage of the known design of the Shuttle thread tension regulator is that it is not possible to provide thread tension due to changes in the pressure force of the plate spring along its length in the areas of contact with the thread passing between the plate and the side surface.

scholarly journals Simultaneous Measuring Method of Needle Thread Tension and Needle Thread Movement for Lockstitch Sewing Machine.

1998 ◽  
Vol 51 (6) ◽  
pp. T125-T130
Author(s):  
Yoshinobu Kamata ◽  
Toyofumi Kato ◽  
Takuya Oda ◽  
Katsuyuki Sakamoto ◽  
Yukihiro Ando ◽  
...  
Keyword(s):  
Measuring Method ◽  
Sewing Machine ◽  
Thread Tension ◽  
Simultaneous Measuring ◽  
Lockstitch Sewing ◽  
Needle Thread

scholarly journals Effect of Some Fabric and Sewing Conditions on Apparel Seam Characteristics

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
A. K. Choudhary ◽  
Amit Goel
Keyword(s):  
Design Methodology ◽  
Flexural Rigidity ◽  
Orthogonal Design ◽  
Needle Size ◽  
Sewing Machine ◽  
Sewing Thread ◽  
Operation And Maintenance ◽  
Stitch Density ◽  
Thread Tension ◽  
Needle Thread

Many previous studies showed that seam appearance as well as performance depends on the interrelationship of fabrics, threads, and the stitch/seam selection and lastly on the sewing conditions, which include the needle size, needle thread tension, stitch density, and the appropriate operation and maintenance of the sewing machine. Present investigation elucidates the effect of blend composition, sewing thread size, and sewing needle parameters on garment seam characteristics (i.e., seam strength, seam strength efficiency, seam puckering, seam stiffness, and drape coefficient). The seam quality characterization is studied through the L9 orthogonal design methodology. In good quality apparels, compatibility of the seams with the functional requirement is very important for serviceability and life of the apparel. Reversibility as well as repairing of seams in the apparel is very limited in the condition of seam failure. Seam strength efficiency is higher for the uniform fiber matrix in the structure of fabrics. The polyester dominated suiting fabrics give minimum seam stiffness because polyester component has low flexural rigidity. The cotton dominated suiting fabrics have less seam puckering due to increase in fabric stiffness.

“Design and Analysis of Flywheel for Shape Optimization”

2016 ◽  
Vol 2 (09) ◽  
Author(s):  
Mr. Balasaheb S. Rathod ◽  
Prof. Satish M. Rajmane
Keyword(s):  
High Reliability ◽  
Material Strength ◽  
Optimized Design ◽  
Material Failure ◽  
Efficient Design ◽  
Stress Variation ◽  
Sewing Machine ◽  
Continuous Energy ◽  
Mechanical Models ◽  
The Cost

A flywheel is essentially a very heavy wheel that takes a lot of force to spin around .the shape of the flywheel plays an important role in storing capacity as well as to minimize the fluctuations of shaft .Flywheels are often used to provide continuous energy in system. And act as a reservoir by storing the energy. The parameters which affect the flywheel are material strength, geometry, and rotational speed .optimizing a flywheel means providing a framework for optimizing structures described by various possible physical or mechanical models .optimization helps to minimize the cost of the flywheel. Flywheel having efficient design maximizes the life and assures high reliability .This flywheel finds applications in punching press, sewing machine, I.C. engines ,pumps etc. the various shape for flywheel design are solid, rim, web and arm type flywheel in which stress variation is observed for various shape and size and optimizing the shape. Optimized design helps in reducing material failure occurrence due to high stresses, cost improvement. Geometry of the flywheel has a effect on specific energy.

Atomic structure of interface of intermetallic compound TiAl and nitride Ti2AIN using HREM and image processing

1991 ◽  
Vol 49 ◽  
pp. 570-571
Author(s):  
E. Sukedai ◽  
H. Mabuchi ◽  
H. Hashimoto ◽  
Y. Nakayama
Keyword(s):  
Mechanical Properties ◽  
Image Processing ◽  
Composite Material ◽  
Intermetallic Compound ◽  
Side Surface ◽  
High Resolution Electron Microscopy ◽  
Hexagonal Structure ◽  
Second Phase ◽  
Resolution Electron ◽  
Compound Tial

In order to improve the mechanical properties of an intermetal1ic compound TiAl, a composite material of TiAl involving a second phase Ti2AIN was prepared by a new combustion reaction method. It is found that Ti2AIN (hexagonal structure) is a rod shape as shown in Fig.1 and its side surface is almost parallel to the basal plane, and this composite material has distinguished strength at elevated temperature and considerable toughness at room temperature comparing with TiAl single phase material. Since the property of the interface of composite materials has strong influences to their mechanical properties, the structure of the interface of intermetallic compound and nitride on the areas corresponding to 2, 3 and 4 as shown in Fig.1 was investigated using high resolution electron microscopy and image processing.

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