Abstract
Background: With the development of U-axis machining technology, recent patents on the design of facing head are also addressed increasingly. But the current NC (Numerical Control) facing heads have complex structures, they are deficient in transferring power and are difficult to maintain.
Objective: In order to simplify the structure of facing head and analyze the unbalanced rotating body, a novel transmission mechanism is proposed and the kinematics and dynamics simulation analysis are adopted for unbalanced problems in this paper. Method: Firstly, axial load of feed drive system and load inertia is calculated. Then, an unbalanced rotating body by using the kinematics and dynamics simulation analysis is analyzed, because of the mechanical structure and the special motion. Finally, the design of the machine is changed with an electric control system. Results: This paper presents a novel transmission structure, which is different from the current patents. It is divided into rotating body and stationary body, the drive mechanism is fixed in the rotating body based on three-dimensional machine design. The simulation results demonstrated that the proposed dynamic balance is effective. Conclusion: The new design solves the problems of the current patents about NC facing head. It can be fitted to NC Floor Type Boring and Milling Machines, to Machining centers and so on.Keywords: Drive system, dynamic balance, facing head, rotating body, simulation, stationary body.
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