Vibration characteristics of high speed industrial sewing machine
                                                                             LI Xiang qi, CAO Ju jiang
                                       (Shannxi University of Science & Technology, Xian 710021, China)


Abstract: Aiming at the vibration noise problem of GC6910 high speed industrial sewing machine, the vibration test on the chassis working panel of GC6910 high speed industrial sewing machine was carried out. In the test, 15 test points were selected on the chassis working panel according to the position of the transmission mechanism and the 6th order natural frequency of the chassis working panel. Four test points were selected for each test, and the acceleration sensor was used at different speeds for multichannel parallel acquisition. The effective value of the acceleration was calculated at the same time the test point vibration acceleration with the speed curve was drew, the curve characteristics can be affected by the vibration of the machine to maximize the two points, the transmission mechanism corresponding to the two most influential points was demolished and retested three times. The results of the test show that the hooking mechanism and the sprint fastening mechanism are the main source of the whole vibration, and the dynamic balance optimization is needed.
Key words: industrial sewing machine; vibration test; accelerated