In this paper,the principle of FDM(fused deposition modeling )is brifed,then the factors which influence the precision in maching process was presented in detail.

• 介绍快速成形技术中的熔融沉积成形的基本原理,分析了在成形过程中,各种因素对精度的影响,并在此基础上,提出了提高成形件精度和表面质量的措施,对熔融沉积工艺有应用价值。