| 高速加工热缩加长刀杆与刀具配合径向夹持刚度分析 |
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| 引用本文： | 周后明,王成勇,赵振宇,袁慧.高速加工热缩加长刀杆与刀具配合径向夹持刚度分析[J].机械强度,2009,31(1). |
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| 作者姓名： | 周后明 王成勇 赵振宇 袁慧 |
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| 作者单位： | 1. 广东工业大学,机电工程学院,广州,510006;湘潭大学,机械工程学院,湘潭,411105
2. 广东工业大学,机电工程学院,广州,510006 |
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| 基金项目： | 国家自然科学基金，广东省科技计划重大项目，广西制造系统与先进制造技术重点实验室开放课题基金 |
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| 摘 要： | 建立热缩加长刀杆与刀具配合的有限元模型,给出一种合理确定模型中接触刚度系数的有效方法.随后对不同过盈量、夹持长度及主轴转速对热缩加长刀杆与刀具配合的径向夹持刚度的影响进行分析.最后在建立径向夹持刚度测量方法的基础上,对有限元分析结果进行验证.结果表明,合理的接触刚度系数是正确建立热缩加长刀杆与刀具配合有限元模型的关键;热缩加长刀杆与刀具配合间存在有合理的配合过盈量与夹持长度,以保证配合间夹持均衡而具有很好的夹持刚度,又不至使刀杆强度超过其屈服条件而降低刀杆的使用寿命和精度;当转速超过一定范围时,应考虑离心力对热缩加长刀杆与刀具配合径向夹持刚度的削弱作用.
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| 关 键 词： | 热缩加长刀杆 接触刚度系数 有限元分析 径向夹持刚度 |
STIFFNESS ANALYSIS OF THE MATCHING OF LENGTHENED SHRINK-FIT HOLDER AND CUTTING TOOL IN HIGH SPEED MILLING |
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| ZHOU HouMing,WANG ChengYong,ZHAO ZhenYu,YUAN Hui.STIFFNESS ANALYSIS OF THE MATCHING OF LENGTHENED SHRINK-FIT HOLDER AND CUTTING TOOL IN HIGH SPEED MILLING[J].Journal of Mechanical Strength,2009,31(1). |
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| Authors: | ZHOU HouMing WANG ChengYong ZHAO ZhenYu YUAN Hui |
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| Affiliation: | 1.Institute of Manufacturing Technology of Guangdong University of Technology;Guangzhou 510006;China;2.School of Mechanical Engineering;Xiangtan University;Xiangtan 411105;China |
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| Abstract: | A finite element model of the matching of lengthened shrink-fit holder and cutting tool is established and an available approach to determine the reasonable contact rigidity coefficient is obtained.Subsequently,the influence of different interference,grip length and spindle speed on the grip rigidity of the matching of lengthened shrink-fit holder and cutting tool.Finally,the finite element model is verified based on the construction of measurement method of the grip rigidity.The results show that a reasona... |
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| Keywords: | Lengthened shrink-fit holder Contact rigidity coefficient Finite element analysis Radial grip rigidity High speed milling |
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