Abstract: According to the issues of the obviously technological gap between the domestic and foreign computerized flat knitting machine as well as the lack of systematically theoretical analysis, researching on the knitting elements of computerized flat knitting machine tends to improve the complete machines’ properties of computerized flat knitting machine. The transient mechanic model for knitting elements was established to investigate the variation of the impact force in vertical direction between the cam and the select jack based on UG NX/Motion. The variation of the select jack’s displacement, velocity, acceleration and the stability for the needles’ moving has been confirmed by the simulation of knitting process based on the software UG NX. Furthermore, the variation of the select jack’s displacement, velocity, acceleration has been confirmed by experimental measurement during the knitting process. The data of the experimental results were in accordance with the UG NX/Motion which confirmed the correctness of the transient dynamics’ analysis for knitting elements. It provided a theoretic basis for the design of computerized flat knitting machines.

Key words: computerized flat knitting machine, loop forming mechanism, transient dynamics, UG NX/Motion, movenent simulation