论文部分内容阅读
PCB高速钻孔加工过程中由于运动行程短、起停频繁,引起钻孔机的振动制约了钻孔速度,降低了加工精度。为了减小钻孔机的振动,提出一种分数次幂多项式加减速控制方法,具有加速度和加加速度连续的特性。建立了该加减速控制方法的数学模型,并对加减速算法的具体实现过程进行了详细阐述。仿真及实验表明,所提出的加减速控制方法较常用的S形加减速具有更好的运动平稳性,有利于降低机床的振动,提高加工精度。
PCB high-speed drilling process due to short travel, start and stop frequently, causing the drilling machine vibration control the drilling speed, reducing the machining accuracy. In order to reduce the vibration of drilling machine, a fractional power polynomial acceleration and deceleration control method is proposed, which has the characteristics of continuous acceleration and jerk. The mathematic model of the acceleration and deceleration control method is established, and the concrete realization process of acceleration and deceleration algorithm is described in detail. The simulation and experiment show that the proposed acceleration and deceleration control method has better motion smoothness than the usual S-shaped acceleration and deceleration, which is beneficial to reduce machine vibration and improve machining accuracy.