SIMULATION AND EXPERIMENTAL STUDY ON THE STATIC STIFFNESS OF HIGH SPEED MOTORIZED SPINDLE

CUI FangYuan; LI Yan; YU JiaYi; TANG AoFei; LI PengYang; HAN LiLi

doi:10.16579/j.issn.1001.9669.2017.04.040

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SIMULATION AND EXPERIMENTAL STUDY ON THE STATIC STIFFNESS OF HIGH SPEED MOTORIZED SPINDLE

更新时间：2022-09-22

- SIMULATION AND EXPERIMENTAL STUDY ON THE STATIC STIFFNESS OF HIGH SPEED MOTORIZED SPINDLE
- Journal of Mechanical Strength Vol. 39, Issue 4, Pages: 971-975(2017)
- 作者机构：
  
  1. 西安理工大学机械及精密仪器工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2017.04.040
  CLC：
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CUI FangYuan, LI Yan, YU JiaYi, et al. SIMULATION AND EXPERIMENTAL STUDY ON THE STATIC STIFFNESS OF HIGH SPEED MOTORIZED SPINDLE. [J]. 39(4):971-975(2017)
DOI：

CUI FangYuan, LI Yan, YU JiaYi, et al. SIMULATION AND EXPERIMENTAL STUDY ON THE STATIC STIFFNESS OF HIGH SPEED MOTORIZED SPINDLE. [J]. 39(4):971-975(2017) DOI： 10.16579/j.issn.1001.9669.2017.04.040.

摘要

主轴静刚度是评价电主轴静态特性的一项重要指标,对保证精密数控机床的加工精度至关重要。基于典型工况下切削力和角接触球轴承径向刚度计算公式,通过建立的主轴-轴承系统三维有限元模型,仿真获得了在指定工况下电主轴前端轴向变形量及主轴静刚度。在搭建的实验平台上对电主轴进行了静刚度实验。通过对比仿真结果和实验结果,间接验证了该有限元模型的有效性。基于可靠的有限元模型,进一步仿真获得了电主轴静刚度随前后端轴承预紧力的变化情况。

Abstract

The static stiffness of the spindle is an important index to evaluate the static characteristics of the motorized spindle,which is essential to ensure the machining accuracy of precision CNC machine tools.Based on the calculation formulas of cutting force under typical conditions and those of radial stiffness of angular contact ball bearing,the axial deformation in front of the spindle,as well as the static stiffness in the specified condition,were obtained through the 3D finite element model of rotor-bearing system.The static stiffness test was performed on the experimental platform.By comparing the simulation results and the experimental results,the validity of the finite element model was indirectly verified.Based on the reliable finite element model,the variations of the static stiffness of the spindle with the preloads of the front and rear bearing groups were gained.

关键词

静刚度电主轴有限元预紧力

Keywords

Static stiffnessMotorized spindleFinite elementPreload

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