中文摘要：

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.

英文摘要：

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 multi-generatrix mean value are used. Finally,the cause of taper error is revealed and all the errors are compensated to the taper value. Experimental results indicate that the taper value measured on the on-machine system agrees fairly well with the measured one on three-coordinate measuring machine,and the effectiveness and practicability of the method are fully verified.