Abstract: As one of the key mechanisms, guide bar driving mechanism directly impact the running performance of warp knitting machine on high-speed. The paper analyzes the changing situation of constraining force of the guide bar rotating shaft on low-speed, and establishes the flexible multi-body dynamic model of guide bar driving mechanism of warp knitting machine in virtue of the analysis software of ADAMS and Nastran, reaching conclusion that the changing level of allowed shogging angle of guide bar on high-speed; the deviation level and changing tendency of Guide needle pinpoint position on each different speed; the changing tendency and the reasons of vibration situation of guide bar driving mechanism.

Key words: warp knitting machine , guide bar mechanism , flexible multi-body dynamics , ADAMS , Nastran