Study on Displacement Simulation of Needle Bar Mechanism in Computerized Embroidery Machine

The needle bar is the main mechanism for forming the thread trace of the embroidery in computerized embroidery machine.The embroidery frame does not move when the embroidery needle pierces the embroidery cloth,the embroidery frame moves in the direction of X axis and Y axis to form the embroidery pattern when the embroidery needle leaves the embroidery cloth,so the displacement simulation of the needle bar mechanism in computerized embroidery machine is very important.Based on the study of the needle bar mechanism in computerized embroidery machine, the paper sets out to deduce the theoretical equation of the solutions to the multi-displacement matrix iteration and the exact single-displacement. The two methods are applied to the displacement simulation of the needle bar mechanism. The conclusion shows that it is simple and convenient to choose the exact single-displacement and is unnecessary to engage oneself on complex derivation and the preliminary iteration values in the whole process. The method of the exact single-displacement simulation is useful to the mechanism displacement simulation and can be applied to the motion design of the needle bar mechanism in computerized embroidery machine.