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2010 The 2nd International Conference on Industrial Mechatronics and Automation (ICIMA 2010)

作者： Weibing Xiao School of Electrical and Mechanical Engineering Wuhan University of Science and Engineering Wuhan Hubei China

To measure weft tension of a rapier loom exactly during weft insertion,this paper reasonably configures technological parameters for the rapier loom,adopts a weft tension test system composed of MC68332,main shaft rotation angle sensor,tension sensor,data acquisition chip and display to achieve real-time measurement of dynamic weft tension,elaborates the principle and design method of this tension test system and applies this system to test and analyze tension of different wefts of TT96 rapier loom.

关键词： rapier loom MC68332 single-chip microcomputer weft insertion weft tension test

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Reverse Design and Test of Non-circular Gear & Crank-Rocker & Gear Trains Weft Insertion Mechanism

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Journal of Donghua University(English Edition) 2011年第3期28卷 243-247页

作者：陈建能赵雄胡宇龙任根勇 College of Mechanical Engineering and Automation Zhejiang Sci-Tech University

For the purpose of obtaining satisfactory performance of the non-circular gear & crank-rocker & gear trains (NCCRG) weft insertion mechanism which was proposed in this paper, the ideal kinematic curve of this weft insertion mechanism was given, and the reverse solution models of this mechanism were established. A reverse design and simulation software was compiled based on Visual Basic 6.0 to obtain the mechanism parameters, including the pitch curves and tooth profiles of the non-circular gears. A test-bed of this mechanism was developed according to these parameters. The kinematic performance of this weft insertion mechanism was tested by high-speed video tape recorder with its corresponding video analytical software Blaster's MAS. And the test results were identical with the theoretical calculation. Compared with the conjugate cam weft insertion mechanism which is applied on TT96 rapier loom, under the condition of same weft insertion rate, the variation of acceleration of this mechanism is smaller. This novel weft insertion mechanism can meet the requirements of weft insertion on rapier looms with smooth and steady motion.

关键词： non-circular gear weft insertion mechanism rapier loom reverse design test study

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Dynamic Modeling of Variable Stiffness and Damping for Spatial Linkage Weft Insertion Mechanism with Clearance

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Journal of Donghua University(English Edition) 2020年第6期37卷 470-482页

作者： LI Bo HU Kai JIN Guoguang WEI Zhan SONG Yanyan School of Mechanical Engineering Tiangong UniversityTianjin 300387China Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology Tianjin 300387China

In order to further analyze the influence of clearance on the kinematic performance of spatial linkage weft insertion mechanism,it is necessary to study the dynamic characteristics of contact impact force model with the variable stiffness and damping ***,the parameters in the output process of the system are solved by describing of the flexible joint ***,based on Lankarani-Nikravesh contact force model,the contact impact stiffness and damping coefficient is modified from fixed values to time-varying *** dynamic model of spatial linkage weft insertion mechanism with modified clearance is established by Lagrange method,and the dynamic characteristics of the system are *** results show that the joint clearance can directly affect the output performance of the *** the increase of the clearance value,the curve fluctuations of acceleration,driving torque and collision force are obvious,and it will be further intensified with the increase of spindle speed,which greatly affects the stability of mechanism and fabric ***,the virtual prototype is established by the SolidWorks software and simulated by the ADAMS *** simulation results are compared with the numerical results,which verifies the accuracy of the modeling method in this paper.

关键词： rapier loom spatial linkage weft insertion mechanism clearance contact impact force model dynamic analysis

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