The positioning operation of the axes of numerically controlled (NC) machine tools is essential before initiating their machining operation. Residual vibration following the positioning operations of the axes deteriorates the cycle time and quality of the machined parts. This study aims to develop a novel acceleration and deceleration design method to suppress the residual vibration during the high-speed positioning of NC machine tools. The proposed method suppresses the vibration by appropriately designing the jerk-limited acceleration profile during acceleration and deceleration. To design the jerk profile, the amplitude map that can represent the relationships between the acceleration parameters and the estimated vibration amplitude is developed. The proposed method suppresses the vibration amplitude without changing the total positioning time. To evaluate the effectiveness of this method, the residual vibration following the high-speed positioning motions was measured and simulated. The results confirm that the proposed method can effectively suppress the residual vibration.

在开始进行数控加工之前，必须对数控机床的轴进行定位操作。轴定位操作后的残留振动会降低循环时间和加工零件的质量。本研究旨在开发一种新颖的加减速设计方法，以抑制数控机床高速定位过程中的残留振动。所提出的方法通过适当地设计加减速期间的加加速度限制的加速度曲线来抑制振动。为了设计冲击曲线，开发了可以表示加速度参数和估计的振动振幅之间关系的振幅图。所提出的方法在不改变总定位时间的情况下抑制了振动幅度。为了评估该方法的有效性，对高速定位运动后的残余振动进行了测量和模拟。结果表明，该方法可以有效抑制残余振动。