摘要
通过对45钢高速铣削试验,研究了工件材料硬度对切削力以及工件表面粗糙度的影响趋势。结果表明,当工件硬度低于HRC50时,随工件硬度的增大,切削力减小、表面粗糙度增大;而工件硬度高于HRC50时,随着工件硬度的增加,切削力增大,表面粗糙度值减小。提出了切削硬度的概念,揭示了切削过程中材料硬度的变化机理,对以上影响规律进行了合理的解释,同时对工件硬度、切削温度、粗糙度、切削力之间的内在相互作用进行了分析。
Based on the experiments of high speed milling of 45 steel,the influences of material hardness on cutting force and surface roughness are investigated. The results indicate that,when the material hardness is less than HRC50,cutting force decreases meanwhile surface roughness increases with the increase of material hardness. Otherwise,when the material hardness is over HRC50,cutting force increases and surface roughness decreases with the increase of material hardness. The conception of cutting hardness is proposed,which reveals the mechanism of the change of material hardness during cutting process. A reasonable explanation of the influences of material hardness on cutting force and surface roughness is also given based on this conception. Meanwhile,the internal interaction of material hardness,cutting temperature,cutting force,surface roughness is analyzed.
出处
《制造技术与机床》
北大核心
2016年第8期83-86,共4页
Manufacturing Technology & Machine Tool
关键词
表面粗糙度
切削力
铣削
工件硬度
切削硬度
surface roughness
cutting force
milling
materials hardness
cutting hardness
