Machining error model for full machining process of thread milling

Thread milling is increasingly used in engineering manufacturing because of its advantages, but there must be some error the thread due to machining principle. In response this problem, paper discussed causes and established model for full process milling. Firstly, geometric developed based on parametric definitions cutter tooth surface, tool-path. Then, motion characteristics penetration retraction segments segment, established. The calculation transformed into solving relationship between position intersection profile line generated cross-section, which means that three-dimensional problem two-dimensional problem. Finally, proposed proven via experiments. simulation results agree well with experimental results, prove correctness validity model. provides theoretical support further research error.