An experimental study was conducted on laser-assisted machining of β21s titanium alloy to investigate the effects of input variables of laser-assisted micromachining (LAMM) and conventional micromachining (CM) on the surface quality of β21s titanium alloy. At the same time, the tool wear patterns of LAMM and CM were revealed, and the wear law of the tools under different laser parameters when cutting different distances was studied as well. The experimental results showed that an optimum roughness value of 0.132 μm was obtained at a laser power of 30 W, a cutting speed of 100 mm/s, and a cutting depth of 10 μm, reduced by 61.7% as compared to CM. On the other hand, during the LAMM and CM experiments, the flank wear of the tools was characterized by bonding wear, while the degree of tool wear was effectively reduced in LAMM. Meanwhile, the influence of cutting length and laser power on tool wear is obtained under the condition of constant cutting speed and cutting depth. In addition, in the process of LAMM, as the cutting length increases and other processing parameters remain unchanged, the optimal laser power is not constant. Increasing the laser power appropriately can effectively suppress tool wear.

对β21s钛合金进行激光辅助加工的实验研究，以研究激光辅助微加工（LAMM）和常规微加工（CM）的输入变量对β21s钛合金表面质量的影响。同时揭示了LAMM和CM的刀具磨损规律，研究了不同距离下激光参数对刀具的磨损规律。实验结果表明，与CM相比，在30 W的激光功率，100 mm / s的切割速度和10μm的切割深度下获得的最佳粗糙度值为0.132μm，降低了61.7％。另一方面，在LAMM和CM实验期间，刀具的侧面磨损以粘结磨损为特征，而LAMM中的刀具磨损程度得到有效降低。与此同时，在恒定的切削速度和切削深度的条件下，得到切削长度和激光功率对刀具磨损的影响。另外，在LAMM的过程中，随着切割长度的增加和其他加工参数的保持不变，最佳激光功率不是恒定的。适当增加激光功率可以有效地抑制工具磨损。