# Calculation results of mold support stiffness and damping of centrifugal casting machine

Taking the horizontal roller supported centrifugal casting machine of an equipment manufacturing Co., Ltd. as an example, the vibration performance of the horizontal centrifugal casting machine was analyzed. This model of centrifugal casting machine parts size and assembly size. The rolling bearing used is self-aligning ball bearing 2318, the dynamic viscosity of lubricating oil for bearing is 0.05pa. S, and the casting speed of centrifugal casting machine is 3000r / min. Using the theoretical calculation method established in this chapter, the stiffness and damping of each support can be calculated as follows: KX = 7.42×10 (8) n / m, KY = 5.23×10 (8) n / m, CX = 6.38×10 (3) n.s/m, cy = 4.50×10 (3) n.s/m. In this paper, the mold of centrifugal casting machine is divided into 101 units, i.e. node number n = 101. The roller support is located at node 21 and node 81.

Fig. 1 and Fig. 2 show the changes of the support stiffness and damping of the system when the support angle changes from 90 ° to 120 ° respectively: in this range, the larger the support angle is, the greater the support stiffness of a single roller is; after equivalent to the horizontal and vertical directions, the horizontal support stiffness and damping increase with the increase of the support angle, and the vertical support stiffness and damping increase with the increase of the support angle It decreases with the increase of bearing angle.

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