The Experts below are selected from a list of 15 Experts worldwide ranked by ideXlab platform
Skřivánek Josef - One of the best experts on this subject based on the ideXlab platform.
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Mathematical Modelling of the Heald Shaft
Sciendo, 2016Co-Authors: Bílek Martin, Kovář Šimon, Skřivánek JosefAbstract:The manufacturers of weaving equipment recently endeavour to minimise the necessary designing plays in the weaving loom mechanisms. One of the mechanisms most exposed to stress is the shedding motion that defines the held-Shaft stroke. Its end part is the Heald Shaft. The Heald Shaft constitutes a problematic assembly of the shedding motion. The design employed presently is characterised by dynamic impact loading caused by designing play in the suspension of Healds into the Heald Shaft. During weaving cycle, the Healds fly between the main beams of the Heald Shaft, producing a considerable force pulse. This paper is concerned with the description of dynamic behaviour of the existing design on the basis of mathematical modelling and verification of obtained results by means of experimental analysis
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Mathematical Model of the Heald with Damping Element
Sciendo, 2015Co-Authors: Bílek Martin, Skřivánek JosefAbstract:This study focuses on the analysis of the existing design solution of shedding mechanism. It is characterised by a Heald attachment into the Heald Shaft with a necessary design allowance. The preparation of a mathematical model for the new concept of the Heald attaching to the Heald Shaft frame is explained in this study. A damping element for dissipating the energy created during the Heald impact on the carrying wire of the Heald Shaft is currently used for the high-speed weaving loom. This system makes use of a damping element, fitted in the profile of the rod at an optimum distance from Heald eye. This element provides for reduction of the Heald velocity before its drop upon the supporting wire because the opposite section of the Heald is pressed into the rubber element. The calculated results of the new concept of the Heald attaching to the Heald Shaft frame are compared with the existing solution without application of the damping element
Munster Bernhard - One of the best experts on this subject based on the ideXlab platform.
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direct hydraulic servodrive for Heald Shaft
2006Co-Authors: Munster BernhardAbstract:PROBLEM TO BE SOLVED: To provide a Heald Shaft drive which can simply be controlled and give a large operation rate. SOLUTION: The Heald Shaft drive comprises preferably hydraulic servodrive units (6, 7) flange-attached to the sides of a Heald Shaft (1). The hydraulic servodrive units (6, 7) comprise movement-measuring systems. The system sets the position of a desired Heald Shaft through their self position-adjusting circuits. Both the drive units (6, 7) are controlled with common guide signals generated from a common nominal value generator. This kind of direct driving gives a Heald Shaft drive which is mechanically strong, is little vibrated, and is used for highly flexible uses. COPYRIGHT: (C)2006,JPO&NCIPI
Bílek Martin - One of the best experts on this subject based on the ideXlab platform.
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Mathematical Modelling of the Heald Shaft
Sciendo, 2016Co-Authors: Bílek Martin, Kovář Šimon, Skřivánek JosefAbstract:The manufacturers of weaving equipment recently endeavour to minimise the necessary designing plays in the weaving loom mechanisms. One of the mechanisms most exposed to stress is the shedding motion that defines the held-Shaft stroke. Its end part is the Heald Shaft. The Heald Shaft constitutes a problematic assembly of the shedding motion. The design employed presently is characterised by dynamic impact loading caused by designing play in the suspension of Healds into the Heald Shaft. During weaving cycle, the Healds fly between the main beams of the Heald Shaft, producing a considerable force pulse. This paper is concerned with the description of dynamic behaviour of the existing design on the basis of mathematical modelling and verification of obtained results by means of experimental analysis
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Mathematical Model of the Heald with Damping Element
Sciendo, 2015Co-Authors: Bílek Martin, Skřivánek JosefAbstract:This study focuses on the analysis of the existing design solution of shedding mechanism. It is characterised by a Heald attachment into the Heald Shaft with a necessary design allowance. The preparation of a mathematical model for the new concept of the Heald attaching to the Heald Shaft frame is explained in this study. A damping element for dissipating the energy created during the Heald impact on the carrying wire of the Heald Shaft is currently used for the high-speed weaving loom. This system makes use of a damping element, fitted in the profile of the rod at an optimum distance from Heald eye. This element provides for reduction of the Heald velocity before its drop upon the supporting wire because the opposite section of the Heald is pressed into the rubber element. The calculated results of the new concept of the Heald attaching to the Heald Shaft frame are compared with the existing solution without application of the damping element
Kovář Šimon - One of the best experts on this subject based on the ideXlab platform.
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Mathematical Modelling of the Heald Shaft
Sciendo, 2016Co-Authors: Bílek Martin, Kovář Šimon, Skřivánek JosefAbstract:The manufacturers of weaving equipment recently endeavour to minimise the necessary designing plays in the weaving loom mechanisms. One of the mechanisms most exposed to stress is the shedding motion that defines the held-Shaft stroke. Its end part is the Heald Shaft. The Heald Shaft constitutes a problematic assembly of the shedding motion. The design employed presently is characterised by dynamic impact loading caused by designing play in the suspension of Healds into the Heald Shaft. During weaving cycle, the Healds fly between the main beams of the Heald Shaft, producing a considerable force pulse. This paper is concerned with the description of dynamic behaviour of the existing design on the basis of mathematical modelling and verification of obtained results by means of experimental analysis
Martin Bilek - One of the best experts on this subject based on the ideXlab platform.
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Analysis of Heald Motion During of Weaving Process
Advances in Mechanisms Design, 2012Co-Authors: Martin BilekAbstract:The paper is concerned with description of the mathematical model meant for an analysis of the movement of Healds during the weaving cycle. The referred model consists of mathematical description of shedding motion, coupled with the solution of the model of the Heald of weaving loom. The effected calculations show a high value of acceleration of the Heald produced after its drop upon the supporting wire. The referred model allows analysing a considerable part of designs of Heald Shaft that are employed in weaving looms nowadays.
