电磁力驱动片梭双向引纬投梭机理研究及实验系统

发布时间：2018-03-25 05:10

本文选题：电磁投梭　切入点：引纬原理　出处：《武汉纺织大学》2017年硕士论文

【摘要】：本文针对现有片梭织机在采用扭轴式投梭方式进行引纬时存在的冲击大、效率低等问题,提出了一种新型的电磁力驱动片梭双向引纬投梭设想。以电磁学基本原理为基础,对现有的投梭引纬原理进行改变,针对片梭引纬过程需要满足的高速、高效、无摩擦等要求,以磁阻式原理作为研究电磁驱动片梭投射/制动的基本原理。文中根据所提出的电磁力驱动引纬设想,建立了片梭电磁投射/制动的理论模型。在单级线圈投射/制动电路特征方程的基础上,对系统在不同电容值和电感值情况下的投梭效果进行了探讨,分析了投射/制动线圈外形参数与其内部磁场强度之间的关系。探索了在电磁驱动的高速双向引纬模式下,线圈内部的磁场分布、投射/制动系统的总电感及电感梯度分布与投射效果之间的关系。并依此建立了电磁驱动的投射/制双向引纬模型,进行了6级线圈的投射/制动过程的仿真。其结果表明,电磁投射/制动原理及设想符合片梭体运动规律及编织工艺要求,即可实现电磁投射磁悬浮双向引纬原理方案的设想,且与普通的扭轴式投梭方式相比,在投射和制动的过程中对片梭和纱线的冲击更小。文中结合片梭引纬开展了磁悬浮片梭与筘座的设计。选用主动磁悬浮原理作为磁悬浮筘座设计的基本原理,选用稀土材料的钕铁硼永磁铁作为片梭永磁体的材料。并以单个永磁体和电磁线圈为例,利用等效磁荷法建立了永磁体受力的数学模型,进行了相应的受力仿真分析,完成了片梭在磁悬浮筘座中悬浮与移动的方案设计。通过研制的电磁力驱动片梭双向引纬实验平台,进行了相关的验证性实验,实验结果证明了电磁驱动投梭引纬的可行性。文中的研究思想将为后续的电磁驱动与磁悬浮式片梭引纬系统验证及实用化研究提供支持。
[Abstract]:In this paper, aiming at the problems existing in the existing projectile loom, such as large impact and low efficiency, when using the twisting shafting method for weft insertion, a new type of electromagnetic force driving the double direction weft insertion and shuttling of the projectile is put forward, which is based on the basic principle of electromagnetism. The principle of weft insertion is changed to meet the requirements of high speed, high efficiency, no friction and so on. The magnetoresistive principle is taken as the basic principle to study the projectile / braking of electromagnetically driven projectile. The theoretical model of projectile / braking of projectile is established. Based on the characteristic equation of single-stage coil projector / braking circuit, the effect of the system under different capacitance and inductance is discussed. The relationship between the shape parameters of the projecting / braking coil and its internal magnetic field intensity is analyzed. The magnetic field distribution inside the coil is explored in the high-speed bidirectional weft insertion mode driven by electromagnetism. The relationship between the total inductance and gradient distribution of inductance and the projection effect of the projecting / braking system is discussed. Based on this, a projection / system bi-directional weft insertion model of electromagnetic drive is established, and the simulation of the projection / braking process of the 6-stage coil is carried out. The results show that, The principle and assumption of electromagnetic projection / braking accord with the motion law of projectile and the requirement of weaving technology. The scheme of electromagnetic projection magnetic levitation bidirectional weft insertion principle can be realized, and it is compared with the conventional twisting shaft-type shuttling mode. In the process of projecting and braking, the impact on the projectile and yarn is less. In this paper, the design of the magnetic levitation shuttle and the Reed is carried out in combination with the weft insertion of the projectile. The principle of active magnetic levitation is selected as the basic principle of the design of the magnetic levitation Reed. NdFeB permanent magnet of rare earth material is selected as the material of projectile permanent magnet. Taking single permanent magnet and electromagnetic coil as examples, the mathematical model of permanent magnet force is established by using the method of equivalent magnetic charge, and the corresponding force simulation analysis is carried out. The scheme design of the suspension and movement of the projectile in the magnetic levitation Reed has been completed. The experimental platform for the two-way weft insertion of the projectile driven by electromagnetic force has been developed, and the relevant verification experiments have been carried out. The results of the experiment prove the feasibility of feeding weft insertion with electromagnetic drive, and the research ideas in this paper will provide support for the further research on electromagnetic drive and magnetic levitation weft insertion system.
【学位授予单位】：武汉纺织大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TS103.134

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