关键词: 加减速控制模型, 三次速度曲线, 微段高速加工, 速度规划算法

Abstract: To satisfy high speed Numerical Control (NC) machining, an acceleration and deceleration control model was proposed, and the speed curve was also constructed by the cubic polynomial. The proposed control model provided continuous acceleration and avoided intense vibration in high speed NC machining. Aiming at high speed machining of consecutive micro line blocks, velocity planning strategy was set up under the constraints of maximum speed, acceleration, geometric path and length of micro line block. Flow chart of velocity planning algorithm based on the cubic polynomial model was also presented. Experimental results demonstrated that the proposed algorithm realized high speed machining of consecutive micro line blocks, and the productivity was improved significantly. It was applied in multi-axes high speed micro fabrication machining.

Key words: acceleration and deceleration control model, cubic speed curve, high speed machining of micro line blocks, velocity planning algorithm