复合材料薄壁回转体零件锥度在机测量系统研究

复合材料薄壁回转体零件(例如套筒类零件)是航天工程中的大型重要零件,几何参数的在机测量技术是保证这一类零件加工精度的有效手段.研究了一种复合材料薄壁回转体零件锥度的在机测量方法,以高精度长度计和高速计数卡作为测量和采集设备,对加工后未拆卸工件的X和Z轴坐标及径向误差在机测量,提出了一种基于最小二乘法拟合与多母线均值的锥度计算方法;揭示了锥度误差产生的机理,并对锥度算法做了合理补偿.测量结果表明,在机测量的锥度值与三坐标测量机测量结果相比在允许误差范围内,充分验证了测量方法的可行性和有效性.

Research on on-machine measurement system for taper of composite thin-walled revolution parts

Large composite revolution parts (as jacket parts) are very important in aerospace engineering,so machining accuracy should be ensured by the technique of on-machine geometric parameters measurement. Then,an on-machine measurement method of the taper value is presented. Firstly,based on a high precision length gauge and a high speed counting-card,X coordinate,Z coordinate and radial error of the part are measured on-machine after processing. Secondly,a taper algorithm is proposed,in which least square and m...