错齿内排屑刀具深孔加工中的刀具振动特性对孔圆度形貌的作用机制

doi:10.3969/j.issn.1000-1093.2016.06.014

兵工学报 ›› 2016, Vol. 37 ›› Issue (6): 1066-1074.doi: 10.3969/j.issn.1000-1093.2016.06.014

错齿内排屑刀具深孔加工中的刀具振动特性对孔圆度形貌的作用机制

孔令飞，牛晗，侯晓丽，林宏斌，王杰

（西安理工大学机械与精密仪器工程学院，陕西西安 710048）

收稿日期:2015-08-05 修回日期:2015-08-05 上线日期:2016-08-06
作者简介:孔令飞(1977—)，男，副教授
基金资助:
国家自然科学基金项目(51475367)；国家科技重大专项项目(2014ZX04001-191)；陕西省自然科学基金项目(14JK1536)

Influence of Tool Vibration Characteristics on the Hole Roundness Morphology in BTA Deep-hole Drilling

KONG Ling-fei, NIU Han, HOU Xiao-li, LIN Hong-bin, WANG Jie

(School of Mechanic and Precision Instrument Engineer, Xi’an University of Technology, Xi’an 710048, Shaanxi, China)

Received:2015-08-05 Revised:2015-08-05 Online:2016-08-06

摘要/Abstract

摘要： 依据错齿内排屑刀具深孔加工的实际特点，构建了受刀具横向振动特性影响的加工孔圆度形貌模型。运用动力学半解析法，在保证刀具系统动态分析精度的前提下，将复杂深孔刀具系统离散为多段具有局部特征的梁单元，其中相邻单元之间满足模态形函数传递矩阵的连续条件。结合Newton-Raphson迭代法，给出了深孔圆度形貌形成轨迹的数学描述，以及深孔刀具动态特性与加工孔圆度形貌之间的关联关系。通过数值算例验证了所提出方法的可行性，同时为实现深孔切削过程加工孔圆度误差的预测与控制奠定了基础。依据错齿内排屑刀具深孔加工的实际特点，构建了受刀具横向振动特性影响的加工孔圆度形貌模型。运用动力学半解析法，在保证刀具系统动态分析精度的前提下，将复杂深孔刀具系统离散为多段具有局部特征的梁单元，其中相邻单元之间满足模态形函数传递矩阵的连续条件。结合Newton-Raphson迭代法，给出了深孔圆度形貌形成轨迹的数学描述，以及深孔刀具动态特性与加工孔圆度形貌之间的关联关系。通过数值算例验证了所提出方法的可行性，同时为实现深孔切削过程加工孔圆度误差的预测与控制奠定了基础。

关键词: 机械制造工艺与设备, 深孔钻削, 刀具振动, 圆度形貌, 半解析法

Abstract: According to the characteristics of deep-hole drilling, a roundness morphology model of machined hole influenced by the dynamical vibration of drilling tool is established. In order to satisfy the dynamic analysis precision, the drilling tool system is discretized into multi-elements beam with the local structure characteristics by using the semi-analytical method. Two adjacent elements must satisfy the continuity condition of modal shape function transfer matrix. Based on the aforementioned method, a novel analytical model of radial cutting depth is deduced to satisfy the precise calculation and analysis of roundness morphology in the progress of practical deep-hole drilling by using Newton-Raphson iterative method, and the relationship between tool vibration properties and roundness morphology is obtained. Various numerical examples are provided to validate the feasibility of proposed method, and the relevant results can be used for the prediction and on-line control of roundness error in the process of deep-hole machining.

Key words: manufaturing technology and equipment, deep-hole drilling, cutting tool vibration, roundness morphology, semi-analytical method

中图分类号:

TH113.1

孔令飞，牛晗，侯晓丽，林宏斌，王杰. 错齿内排屑刀具深孔加工中的刀具振动特性对孔圆度形貌的作用机制[J]. 兵工学报, 2016, 37(6): 1066-1074.

KONG Ling-fei, NIU Han, HOU Xiao-li, LIN Hong-bin, WANG Jie. Influence of Tool Vibration Characteristics on the Hole Roundness Morphology in BTA Deep-hole Drilling[J]. Acta Armamentarii, 2016, 37(6): 1066-1074.

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错齿内排屑刀具深孔加工中的刀具振动特性对孔圆度形貌的作用机制

Influence of Tool Vibration Characteristics on the Hole Roundness Morphology in BTA Deep-hole Drilling

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