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yarn
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  纱线
    Furthermore, the influences of the tension compensator sizes and the physical yarn parameters on the dynamic characteristics and the tension compensating ability of the system are discussed. Some conclusions useful in practice are presented.
    然后又讨论了张力补偿器各尺寸参数与纱线物理参数对系统动力特性及张力补偿能力的影响,并据此引出了一些有实用价值的结论.
短句来源
  “yarn”译为未确定词的双语例句
    A New Salt Bath Anti-Ageing Low Temperature Electrolytic Sulphurizing Process for Spun Yarn Rings
    细纱钢领的盐浴不老化低温电解渗硫新工艺
短句来源
    Establishment and Analysis on Anisomerous Heat Transfer Model of the Triangle Section Yarn
    三角异形丝的不对称传热模型的建立及分析
短句来源
    A Modal Synthesis Technique for Repetitive Structures—Dynamic Analysis of Yarn Tension Compensation System
    重复性结构模态综合技术—张力架动力分析
短句来源
    THE APPLICATION OF CEPSTRUM TECHNIQUE IN YARN IRREGULARITY ANALYSIS
    用倒频谱分析纱条条干不匀
短句来源
    The Analysis of the Influence of Gear Common Normal Length Variation Quantity on the Yarn Evenness
    浅析齿轮公法线长度变动量对成纱条干的影响
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  yarn
Influence of peat humus acid microadditions on the structure of starch gels for sizing cotton yarn is studied by rheology.
      
Air jet loom, as one of the shuttleless looms, transports a yarn into warps using viscosity and kinetic energy of an air jet.
      
Cotton yarns were coated with a polymer solution to hold surface fibers to the yarn body, which caused fiber-fly generation during knitting process.
      
The physical property of the coated yarn, especially a bending rigidity was investigated in order to evaluate the performance of the coated yarn during knitting.
      
SEM images showing the surface condition of the coated yarn demonstrated that the thickness of a coating material increased as the concentration of the coating solution increased.
      
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The wearing angles of the travellers while running at spindle speeds between 13000-15000 r. p. m. and the depth and length of wear of rings and travellers were measured. Various type of rings and travellers were used in these tests, including anti-wedge rings and travellers made in Shanghai. The results show that the wearing angles of travellers are 14°30', 22.25' to the coordinate plane XOY, YOZ respectively. From a simple analysis of the moments acting on the traveller, the cause. of wedging of traveller is...

The wearing angles of the travellers while running at spindle speeds between 13000-15000 r. p. m. and the depth and length of wear of rings and travellers were measured. Various type of rings and travellers were used in these tests, including anti-wedge rings and travellers made in Shanghai. The results show that the wearing angles of travellers are 14°30', 22.25' to the coordinate plane XOY, YOZ respectively. From a simple analysis of the moments acting on the traveller, the cause. of wedging of traveller is discussed, the most serious one being probably the inclined angle A within XY plane. Experiments showed that the working life of travellers are widely different on different rings. Some travellers worked as long as 449 hours, while others had been changed 19 times within the same period. Measurements on those rings and travellers showed that the longer the working life, the greater the ratio of T/t (T-the distance between horns of traveller, and t-the width of the ring web.) and the longer the wearing length. Therefore it is considered that the geometric shape of ring and traveller should suit each other. As an example a ring flange is redesigned under certain simplifications. The author concluded that travellers could run at higher speeds without abnormal wear, burning or wedge, under following conditions: 1. The contact surface between ring and traveller should be larger than those used under ordinary speeds. 2. The center of gravity of the traveller should be low. 3. The contact position on the ring flange should be higher. 4. The space between top surface of the ring and traveller should be large enough to allow yarn to pass through. 5. It is better to use a narrower width of flange. 6. The width of ring web should be narrow. The distance between the horns ends of traveller should be kept at a proper ratio to the flange width of the ring. 7. The sharp angle of the flange curve should be avoided.

通过作用在钢絲圈上各力矩的分析,得出鋼絲圈在运动中是要产生偏斜的。这种偏斜与鋼絲圈重心位置与其在鋼令上接触点的高度有关。由于这种偏斜的产生,且达到使鋼絲的外脚碰及钢令外側壁时,即引起了楔住。認为在子午面中的倾斜是引起楔住的最大原因。除了楔住是运轉上的麻烦外,另一点是钢絲圈在高速下的过快磨損。了对这二点作了討論,提出了在設計鋼领与鋼絲圈的弧形时以及它們相互配合上所应遵循的几点条件。最后,簡單地举例說明了钢令弧形的设計。

The torsional vibration of drafting rollers is a mechanical factor having a significant bearing on the quality of the yarn spun. In this paper a mathematical model of the drafting roller system is formulated. Based on an analysis of the vibration and the actual test on the experimental tester of the roller torsional vibration, the mechanism of torsional vibration of drafting rollers has been illuminated, thus pointing to ways of eliminating the torsional vibration.

罗拉扭振是严重影响纺纱质量的一个机械因素.本文建立了罗拉系统的数学模型,进行了振动分析,并通过在罗拉扭振测试台上的测定,阐明罗拉扭振的机理,为消除罗拉扭振指明方向.

A mechanical model of the rotor of high-speed motor is proposed. The differential equations and their special solutions are also offered in this paper. To the cantilevered end of this rotor an alterating interference force is applied.The mechanism that parallel plain thrust bearing can be used in the rotor-bearing system for journal bump foil bearing is theoretically revealed.The running test indicates that the performance of the open-end spinning machine driven by the high-speed motor using bump foil bearings...

A mechanical model of the rotor of high-speed motor is proposed. The differential equations and their special solutions are also offered in this paper. To the cantilevered end of this rotor an alterating interference force is applied.The mechanism that parallel plain thrust bearing can be used in the rotor-bearing system for journal bump foil bearing is theoretically revealed.The running test indicates that the performance of the open-end spinning machine driven by the high-speed motor using bump foil bearings is highly satisfactory, and the quality of the yarn completely accords with the quality index set up by the state.It is verified by both theory and practice that this rotor-bearing system, to which small thrust load is applied, is suitable for small load and high-speed machine with cantilevered end.

本文提出了在悬臂端受有交变干扰力作用的中频电机高速转子的力学模型,得到了运动微分方程式及其特解,从理论上揭示了径向波箔轴承轴糸可以使用平行平板推力轴承的机理。经装机运行试验表明,波箔轴承中频电机气流纺纱器性能良好,所纺纱线完全达到规定质量指标。从而从理论和实践上证实了这种轴承系统适用于受有较小推力载荷的悬臂支承轻载高速机械。

 
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