高速铣削系统切削力动态分析 |
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引用本文: | 李世春,彭程.高速铣削系统切削力动态分析[J].衡阳工学院学报,2011(2):22-25. |
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作者姓名: | 李世春 彭程 |
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作者单位: | 长江师范学院机械工程学院,重庆408003 |
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基金项目: | 湖南省自然科学基金资助项目(05.1J40066);湖南省经委科技重点基金资助项目([2004]181);湖南省教育厅科技计划基金资助项目(07C031) |
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摘 要: | 工件的切削加工与过程动态力学之间存在着必然的内在联系.由于铣削系统中的振动,特别高速铣削加工过程中的振动,在运用KISTLER测力计系统测量切削力时,通常会出现信号失真现象.文章进行了铣削系统的动力学分析,测量了切削过程中工件的振动,估算了工件的惯性力、测力计等效质量和测定的力学数据增量.试验结果表明,高速铣削硬钢构件时的振动,是由较强的冲击、切屑形成机理以及共振所产生,这些因素在分析切削力和切削过程时不容忽视.
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关 键 词: | 洗削 高速 切削力 测量 |
Dynamics of Milling System and Force Measurements in High-speed Milling |
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Authors: | LI Shi-chun PENG Cheng |
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Affiliation: | * ( School of Mechanical Engineering, Yangtze Normal University, Chongqing 408003, China) |
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Abstract: | During cutting the structural and process dynamics are intrinsically coupled. The vibrations of the milling system particularly in high--speed milling deteriorate the force signals measured by the force sensor say a KISTLER dynamometer. In this paper, the dy- namics of the milling system is analysed. The vibrations of the workpiece were measured during cutting. The values of the inertia forces of the workpiece together with the dynamom- eter's equivalent mass were computed and added to the measured force data. The experi- mental results prove that in high speed milling of steel the vibrations, arising from the rela- tively strong impact, chip formation mechanism, and resonance effects, cannot be ignored in the analysis of the cutting force and process. |
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Keywords: | milling high speeds cutting force measurements |
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