TRANSIENT RESPONSE ANALYSIS OF MACHINING CENTER UNDER IMPACT OF HIGH ACCELERATION

MI Jie; ZHEN Zhen; ZHU YingPing

doi:10.16579/j.issn.1001.9669.2018.04.037

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TRANSIENT RESPONSE ANALYSIS OF MACHINING CENTER UNDER IMPACT OF HIGH ACCELERATION

更新时间：2022-09-22

- TRANSIENT RESPONSE ANALYSIS OF MACHINING CENTER UNDER IMPACT OF HIGH ACCELERATION
- Journal of Mechanical Strength Vol. 40, Issue 4, Pages: 987-991(2018)
- 作者机构：
  
  1. 北京信息科技大学机电工程学院
  2. 北京工研精机股份有限公司技术中心
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2018.04.037
  CLC：
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MI Jie, ZHEN Zhen, ZHU YingPing. TRANSIENT RESPONSE ANALYSIS OF MACHINING CENTER UNDER IMPACT OF HIGH ACCELERATION. [J]. 40(4):987-991(2018)
DOI：

MI Jie, ZHEN Zhen, ZHU YingPing. TRANSIENT RESPONSE ANALYSIS OF MACHINING CENTER UNDER IMPACT OF HIGH ACCELERATION. [J]. 40(4):987-991(2018) DOI： 10.16579/j.issn.1001.9669.2018.04.037.

摘要

加工结构复杂、曲面形状不规则的航空发动机叶片,要求加工中心提供极大的加速度来保证各轴的快速移动,同时在高加速度的冲击下保证加工精度。建立叶片加工中心有限元模型,提出用复合单元处理螺栓结合面和滚珠丝杠-导轨-滑块结合面的方法,给出直线及回转加速度冲击下力及力矩的加载方案。基于Ansys Workbench平台对叶片加工中心进行高加速度瞬态响应分析,得出了加工中心在不同加速度冲击下的时域瞬态响应曲线,分析满足加工精度的振动衰减时间,将高加速度冲击下机床振动对加工精度的影响降低到最小。分析结果为合理选取加工中心加速度,优化叶片加工工艺及改善加工中心动态特性提供理论依据。

Abstract

The manufacturing processing of blade,which has complicated structure and irregular surface shape,become increasingly high-speed.Thus,high acceleration is required to ensure the rapid movement of each axis.At the same time,the machining accuracy should be confirmed under the acceleration impact.The finite element model of a domestic blade machining center is established to take the transient response analysis by using ANSYS Workbench.Moreover,a new method of composite unit is presented to bolted joints and guide joints.And,the load solutions are given to linear and rotational acceleration impact.The transient responses of machining center under different accelerations are obtained,and the vibration attenuation time is analyzed to meet the machining accuracy.Thus,the impact of machine vibration on machining accuracy is minimized under high acceleration.The results provides theoretical basis for rational allocation of acceleration,optimization of the blade processing and improvement of dynamic characteristics of machining center.

关键词

叶片加工中心加速度瞬态响应复合单元

Keywords

Blade machining centerAccelerationTransient responseComposite unit

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School of Mechanical and Electrical Engineering,Lanzhou Jiaotong University

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