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为解决复合材料锥壳环向自动铺丝编程问题,提出了按圆锥螺距进行锥壳自动铺丝编程的轨迹规划方法。根据圆锥螺旋角与螺距之间的关系式,通过改变螺旋角来保证螺距的恒定,继而实现自动铺丝过程中预浸纱无缝、无重叠、无增减纱。给出了在圆锥锥角较小情况下的一种简易铺丝编程方法。同时,通过计算该编程方法的铺放角与测地线轨迹的铺放角和固定角轨迹的铺放角之间的最大偏角,分析了该方法的铺放工艺性,并对该编程方法铺丝轨迹的最大测地曲率做了估算。最后,采用该方法对某机身尾锥试验件进行实际铺放验证。结果表明,提出的锥壳环向自动铺丝编程方法是合理的、正确的,具有良好的铺放工艺性。
In order to solve the problem that the conical shell of the composite material is automatically laid in the circumferential direction, a trajectory planning method based on conical pitch for automatically laying the cone shell is proposed. According to the relationship between the conical helix angle and the pitch, the helix angle can be changed to ensure the constant pitch, then the preprinted yarn in the automatic laying process can be seamless, non-overlapping and non-increasing or decreasing. A simple method of laying wire programming is given under the condition of small cone angle. At the same time, by calculating the maximum declination angle between the laying angle and the geodesic trajectory of the programming method and the placement angle of the fixed angle trajectory, the laying process of the method is analyzed, and the programming method The maximum geodesic curvature of the laying path is estimated. Finally, this method is used to verify the actual deployment of a fuselage tail cone test piece. The results show that the proposed conical shell to the automatic programming method is reasonable, correct, with good laying process.