自动铺丝过程中倾角施压的行程影响

EFFECT ON EQUIPMENT TRAVEL OF PRESSING ON NEGATIVE CURVATURE CYLINDER WITH ANGLE

本文针对在装备行程或尺寸受限的情况下实现负曲率柱面的大区域铺放问题开展研究工作,提出采用倾角施压的方法来规避设备行程的不足,扩大设备的作业范围。首先建立倾斜施压的模型,分析影响因素,比如铺丝头长度、负曲率柱面半径等关键参数;然后分析参数的影响趋势以及在不同铺放位置的影响程度,并给出合理的倾角影响范围;最后根据实际情况给出倾角方案,进行实际铺丝验证。同时实验验证了算法的有效性,为负曲率曲面铺放时使用倾角施压增大铺放区域或规避行程不足奠定了理论基础。

Because of the condition of limited mould size or limited equipment travel,negative curvature cylinders is difficult to place prepreg on it.This research focus on how to expand fiber placement area on negative curvature cylinders.In order to avoid the lack of equipment travel and expand the scope of equipment operation,this article propounds a method of giving angle pressure on cylinders.This research includes modeling,parameter analysis and conclusion.Firstly,the model of inclined pressure should be established and the influencing factors are summarized and analyzed,such as the length of fiber placement head,the radius of the cylindrical surface of the negative curvature,and the angle range.Then the influence trend of the parameters and the level of influence at different placement positions is analyzed in detail.After analysis,a reasonable influencing range of pressure angle is given.Finally,according to the actual situation,the angle scheme is given and the actual fiber placement verification experiment is carried out.As a result,the effectiveness of the algorithm is verified by those experiments.This algorithm also lays a theoretical foundation for the use of angle pressure to increase the fiber placement area or avoid the lack of equipment travel in negative curvature surface placement.