Abstract

Herein, to decompose and reconstruct surface morphology after machining, the high- and low-frequency roughness surface and roughness evaluation data for titanium alloy (Ti-5553) are obtained using Sym5 wavelet. The effects of cutting conditions and parameters on the surface morphology in different frequency bands are analysed. The cutting parameters of Ti-5553 machining are optimised. The experimental and analytical results show that the low-temperature processing of liquid nitrogen affects the high- and low-frequency roughness surface, whereas cutting speed and feed affect the low-frequency roughness surface. The surface comprehensive performance is better when the cutting speed is 70 m/min and feed is 0.05 mm/r under the low temperature of liquid nitrogen, which provides theoretical support for the better surface morphology of Ti-5553 in machining. The wavelet transform is also used to analyse the three-dimensional surface morphology of the machined workpiece.

摘要

这里，为了分解和重建加工后的表面形貌，使用Sym5小波获得钛合金（Ti-5553）的高频和低频粗糙度表面和粗糙度评估数据。分析了切削条件和参数对不同频段表面形貌的影响。优化了 Ti-5553 加工的切削参数。实验和分析结果表明，液氮低温加工影响高频和低频粗糙度表面，而切削速度和进给量影响低频粗糙度表面。在液氮低温下，切削速度70m/min，进给0.05mm/r时，表面综合性能较好，为Ti-5553在加工中更好的表面形貌提供了理论支持。小波变换还用于分析加工工件的三维表面形貌。