新型硬质合金微坑车刀切削能对比研究与预测

发布时间：2018-04-18 22:25

本文选题：切削能 + 剪切能　；参考：《工程科学学报》2017年08期

【摘要】：切削能绝大部分会转化为切削热,进而直接影响切削温度,因此研究切削能的产生、传递与转化对切削温度的研究尤显重要.本文以304不锈钢专用新型硬质合金微坑车刀创新设计为例,通过对新型微坑车刀和原车刀切削过程的切削能比较研究,建立车刀切削过程切削能与前刀面温度的关系模型,开展新型微坑车刀剪切能和摩擦能的预测研究和切削实验验证.研究结果表明,用实际生产推荐切削参数,干式切削情况下,新型硬质合金微坑车刀相比原车刀,输入能量降低8.96%,剪切能降低10.50%,摩擦能降低5.32%;刀具前刀面的切削温度与剪切能和摩擦能呈正相关关系;所建立切削能预测模型可为复杂切削条件下的切削能预测及前刀面切削温度研究提供参照.
[Abstract]:Most of the cutting energy will be transformed into cutting heat, which will directly affect the cutting temperature. Therefore, the research on the generation, transfer and transformation of cutting energy is particularly important to the study of cutting temperature.This paper takes the innovative design of a new type of cemented carbide micro-pit turning tool for 304 stainless steel as an example. By comparing the cutting energy between the new type micro-pit turning tool and the original turning tool, a model of the relationship between the cutting energy and the front cutting surface temperature is established.The prediction of shear energy and friction energy of new micro crater turning tools and the experimental verification of cutting are carried out.The results show that the new cemented carbide micro-crater turning tool is compared with the original turning tool under the condition of dry cutting and recommended cutting parameters by actual production.The input energy is reduced by 8.96, the shear energy is reduced by 10.50 and the friction energy is reduced by 5.32.The cutting temperature of the cutting face is positively correlated with the shear energy and the friction energy.The prediction model of cutting energy can be used as a reference for the prediction of cutting energy under complex cutting conditions and the study of cutting temperature on the front cutting face.
【作者单位】：贵州大学机械工程学院;贵州电子信息职业技术学院;贵州师范学院;
【基金】：国家自然科学基金资助项目(51265005,51665007) 教育部博士点基金资助项目(20125201110001)
【分类号】：TG712

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