The use of cutting temperature to evaluate the machinability of titanium alloys.
The use of cutting temperature to evaluate the machinability of titanium alloys.
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DOI：
10.1016/j.actbio.2008.08.016
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发表时间：
2009-02
影响因子：
9.7
通讯作者：
M. Kikuchi
中科院分区：
文献类型：
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作者：
M. Kikuchi
研究了钛、两种商用钛合金(Ti-6Al-4V和Ti-6Al-7Nb)和易切削黄铜的切削温度。通过测量刀具-工件热电偶在切割过程中的热电动势来估算切割温度。之前已经确定了每种金属相对于工具的温差电势。在四种切割条件下，使用铣床和硬质合金方头立铣刀对这些金属进行开槽。Ti-6Al-4V和Ti-6Al-7Nb的切割温度显著高于钛，而易切削黄铜的切割温度低于钛。这一结果与先前研究中测量的切削力大小的关系一致。对于每种金属，随着切割深度的增加、切割速度和进给量的增加，切割温度升高。比较两种切削率相同的加工条件时，切割速度和进给量的增加对切削值的影响大于切深的增加。结果表明，利用切割温度测量技术可以开发牙科CAD/CAM应用的新材料，优化切割条件。
This study investigated using the cutting temperature to investigate the machinability of titanium, two commercial titanium alloys (Ti–6Al–4V and Ti–6Al–7Nb) and free-cutting brass. The cutting temperature was estimated by measuring the thermal electromotive force of the tool–workpiece thermocouple during cutting. The thermoelectric power of each metal relative to the tool had previously been determined. The metals were slotted using a milling machine and carbide square end mills under four cutting conditions. The cutting temperatures of Ti–6Al–4V and Ti–6Al–7Nb were significantly higher than that of the titanium, while that of the free-cutting brass was lower. This result coincided with the relationship of the magnitude of the cutting forces measured in a previous study. For each metal, the cutting temperature became higher when the depth of cut or the cutting speed and feed increased. The increase in the cutting speed and feed was more influential on the value than the increase in the depth of cut when two cutting conditions with the same removal rates were compared. The results demonstrated that cutting temperature measurement can be utilized to develop a new material for dental CAD/CAM applications and to optimize the cutting conditions.