Application of Threadless Screw to Precise Linear Positioning

Hojjat, Yousef; Shirkosh, Mohammad

doi:10.1007/s12541-020-00407-8

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…Since polymer composites prepared with micro‐ and/or nanosized reinforcing particles show good dielectric and mechanical properties, many LDPE‐based composite materials have been produced and characterized to improve the properties of LDPE and make it more resistant to environmental conditions. For instance, Hojjat and Mahmood reported that the real component (

ε^{'}

) of the complex electrical permittivity function and dielectric loss factor (

\tan δ

) of the pure LDPE increases as the ethylene‐vinyl acetate(EVA) contribution in the composite changes from 0% to 30% by weight 6 . Alkan et al also researched the thermal, mechanical, and dielectric properties of LDPE/polyaniline (PANI) composites and found that LDPE/0.7% PANI composite had better mechanical and dielectric properties than the pure LDPE 7 .…”

Section: Introductionmentioning

confidence: 99%

LDPE/Bi₂O₃ nanocomposites: Enhanced mechanical, dielectric, and optical properties

Şahin,

Beyazay,

Karabul

et al. 2023

J of Applied Polymer Sci

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This study is focused on investigating the role of bismuth oxide (Bi2O3) nanoparticles to improve structural, optical, electrical, and mechanical properties of low‐density polyethylene (LDPE). For this purpose, Bi2O3 nanoparticles were synthesized by using the solvothermal method and examined by transmission electron microscopes (TEM), x‐ray diffraction (XRD), Fourier transformed infrared (FTIR) spectroscopy, and ultraviolet–visible (UV–Vis) light absorption methods. LDPE‐based nanocomposites were prepared by changing the nanoparticle additive ratio in the composite from 0% to 2% by weight. The composites were analyzed in the context of their FTIR spectra, atomic force microscope (AFM) images, UV–Vis light absorption spectra, stress–strain curves, and energy storage abilities. While the AFM findings indicate a smoother surface for the composites, the optical band gap analysis reveals a slightly decreased direct optical band gap energy. The analyses based on dielectric spectroscopy also highlight the LDPE/0.5% n‐Bi2O3 composite in terms of the best energy storage capability. Additionally, the highest Young's modulus, toughness, stress at break, and percentage of strain at break were also recorded for the LDPE/0.5% n‐Bi2O3 composite. In this context, the LDPE/0.5% n‐Bi2O3 composite with improved dielectric and mechanical properties can be suggested as a new promising LDPE‐based nanocomposite with better properties for industrial purposes.

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ε^{'}

) of the complex electrical permittivity function and dielectric loss factor (

\tan δ

Section: Introductionmentioning

confidence: 99%

LDPE/Bi₂O₃ nanocomposites: Enhanced mechanical, dielectric, and optical properties

Şahin,

Beyazay,

Karabul

et al. 2023

J of Applied Polymer Sci

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“…The main function of the machine tool positioning mechanism in the industrial field is to place the workpiece quickly and accurately on the equipment, through the bearing of the body and the clamping parts, so that the workpiece is precisely fixed in the predetermined position [7]. The positioning mechanism commonly used at home and abroad are inclined wedge positioning mechanism, screw positioning mechanism, eccentric positioning mechanism, centering and positioning mechanism, hinge positioning mechanism and so on [8][9][10]. Among them, the oblique wedge localization mechanism is the most basic form of localization mechanism and needs to be combined with other methods in practical production.…”

Section: Introductionmentioning

confidence: 99%

Design Optimization of an Electric Positioning Mechanism

2022

jemm

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The positioning mechanism of conventional transfer vehicles commonly employs a hydraulic or pneumatic driving mode, which requires control valves, actuators and pipe fittings, causing problems such as complex composition, high cost and inconvenient hauling of pipes and accessories when installed on transfer vehicles. In order to avoid the above difficulties, an electrical localization mechanism using electromagnets as power units has been designed. First, it explains its working principles and composition. Moreover, the implementation scheme and the structure of the electromagnetic thrust are then detailed, including the frame, the telescopic components and the power equipment. Next, based on the force analysis of the locator, we introduce the calculation of the electromagnetic thrust to the locator and design a reasonable angle between the locator and the pin. Finally, by switching the electromagnet on and off, the mechanism drives the positioning plate to reciprocate, thus enabling multi-position accurate positioning and rapid un-positioning of the transfer vehicle, contributing to the compact, low-cost and environmentally friendly maintenance of the mechanism.

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Design of a Variable Reference Current Controller for Micro-stepping Motor Based on Vibration and Missing Step Characteristic Data

Yoo

Kim

et al. 2023

Int. J. Precis. Eng. Manuf.

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Application of Threadless Screw to Precise Linear Positioning

Cited by 4 publications

References 23 publications

LDPE/Bi₂O₃ nanocomposites: Enhanced mechanical, dielectric, and optical properties

LDPE/Bi₂O₃ nanocomposites: Enhanced mechanical, dielectric, and optical properties

Design Optimization of an Electric Positioning Mechanism

Design of a Variable Reference Current Controller for Micro-stepping Motor Based on Vibration and Missing Step Characteristic Data

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Application of Threadless Screw to Precise Linear Positioning

Cited by 4 publications

References 23 publications

LDPE/Bi2O3 nanocomposites: Enhanced mechanical, dielectric, and optical properties

LDPE/Bi2O3 nanocomposites: Enhanced mechanical, dielectric, and optical properties

Design Optimization of an Electric Positioning Mechanism

Design of a Variable Reference Current Controller for Micro-stepping Motor Based on Vibration and Missing Step Characteristic Data

Contact Info

Product

Resources

About

LDPE/Bi₂O₃ nanocomposites: Enhanced mechanical, dielectric, and optical properties

LDPE/Bi₂O₃ nanocomposites: Enhanced mechanical, dielectric, and optical properties