Extension of durability theory through correlation of wear with acoustic emission to the characteristic values of the ball screw drive

通过将磨损与声发射与滚珠丝杠传动装置的特征值相关联来扩展耐用性理论

基本信息

项目摘要

Ball screw drives are currently used in the vast majority of all metal cutting machine tools as the essential drive element. Therefore, the precise knowledge of service life and assurance of availability of the ball screw drive is of decisive economic importance. Currently, the dimensioning of ball screw drives only takes into account fatigue life. This is due to the fact that it is unknown how fatigue life, wear mechanisms and the mechanical behavior of the ball screw drive are correlated.Ball screw drives are subjected to complex and combined wear mechanisms due to the complex movement and the return of the ball. This results in complex presences of wear such as abrasion, adhesion and fatigue. This influences distinctively the service life of the ball screw drive. Additionally the wear mechanisms influence the mechanical characteristics of the ball screw drive e.g. the nut preload or stiffness of the nut. Current methods for wear diagnostics only focus on individual presences of wear and on individual mechanical characteristics. Therefore an integrated understanding of wear mechanisms, wear presences and the mechanical characteristics of the ball screw drive is currently not available. Acoustic Emission is a measurement method with which wear mechanisms can be observed. Acoustic Emission allows better feature extraction because of the higher information density, leading to the observation of the formation of wear. This is currently used for diagnostics in gear boxes and bearings.Objective of this research proposal is an integrated approach correlating wear mechanisms, presences of wear and the mechanical characteristics of the ball screw drive over time with the use of Acoustic Emission. In addition to the established characteristic values for condition monitoring, acoustic emission constitutes a method to more precisely identify signs of wear (e.g. pitting) over time and to spatially assign them to the track of nut and screw or ball and therefore create a depiction of damage progression. This allows to draw conclusions on the effective wear mechanisms. This research attains the goal of correlating the depiction of damage progression received with Acoustic Emission with the mechanical characteristics and the presence of wear (structure-borne noise, temperature, frictional torque, nut preload and characteristic curve of stiffness). By matching these observations a conclusion on the chronological sequence of effective wear mechanism can be drawn. Additionally the effective service and fatigue life of the ball screw drive is quantified by identifying static and dynamic properties as a function of wear development. As a result more precise predictions of the effective service and fatigue life can be derived.
滚珠丝杠传动目前在绝大多数金属切削机床中作为基本的驱动元件使用。因此,精确了解滚珠丝杠传动的使用寿命和保证其可用性具有决定性的经济意义。目前,滚珠丝杠传动的尺寸仅考虑疲劳寿命。这是因为我们还不清楚滚珠丝杠传动的疲劳寿命、磨损机制和机械性能之间的关系。滚珠丝杠传动由于滚珠的复杂运动和返回而受到复杂的复合磨损机制的影响。这导致复杂的磨损,如磨损,粘附和疲劳。这明显影响滚珠丝杠传动的使用寿命。此外,磨损机制影响滚珠丝杠传动的机械特性,例如螺母预载荷或螺母的刚度。目前的磨损诊断方法只关注个别存在的磨损和个别的机械特性。因此,目前还不能全面了解滚珠丝杠传动的磨损机制、磨损存在和机械特性。声发射是一种可以观察磨损机制的测量方法。声发射由于信息密度较高,可以更好地提取特征,从而观察磨损的形成。这是目前用于齿轮箱和轴承的诊断。本研究提案的目的是一个综合的方法关联磨损机制,磨损的存在和滚珠丝杠传动的机械特性随着时间的推移与使用声发射。除了用于状态监测的既定特征值外,声发射还构成了一种方法,可以更精确地识别随时间推移的磨损迹象(例如点蚀),并在空间上将其分配给螺母和螺钉或滚珠的轨迹,从而创建损坏进展的描述。这允许得出关于有效磨损机制的结论。本研究的目的是将声发射对损伤进程的描述与机械特性和磨损的存在(结构噪声、温度、摩擦扭矩、螺母预紧力和刚度特性曲线)相关联。通过匹配这些观察结果,可以得出关于有效磨损机制的时间顺序的结论。此外,滚珠丝杠传动的有效使用寿命和疲劳寿命通过识别作为磨损发展的函数的静态和动态特性来量化。因此,可以得到更精确的有效使用寿命和疲劳寿命的预测。

项目成果

期刊论文数量(3)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Autoconfiguration of a Vibration-Based Anomaly Detection System with Sparse a-priori Knowledge Using Autoencoder Networks
Unsupervised Detection of State Changes During Operation of Machine Elements
机器元件运行期间状态变化的无监督检测
  • DOI:
    10.36897/jme/136311
  • 发表时间:
    2021
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Hillenbrand;Fleischer
  • 通讯作者:
    Fleischer
Investigation of defects in roll contacts of machine elements with Acoustic Emission and Unsupervised Machine Learning
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Professor Dr.-Ing. Jürgen Fleischer其他文献

Professor Dr.-Ing. Jürgen Fleischer的其他文献

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{{ truncateString('Professor Dr.-Ing. Jürgen Fleischer', 18)}}的其他基金

Enabling the ARBURG Freeforming process for industrial production of metallic components
支持 ARBURG(阿博格)自由成型工艺用于金属部件的工业生产
  • 批准号:
    443103294
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Research Grants (Transfer Project)
Methodology for increasing the uniformity of fiber-injection-molded preforms
提高纤维注射成型预制件均匀性的方法
  • 批准号:
    439709829
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Joining of intrinsically manufactured frp/metal components to metallic structural elements by resistance spot welding
通过电阻点焊将固有制造的玻璃钢/金属部件连接到金属结构元件
  • 批准号:
    418238897
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Additively manufactured temperature sensitive actuators made of shape memory wire reinforced polymer structures
由形状记忆线增强聚合物结构制成的增材制造温度敏感执行器
  • 批准号:
    422469945
  • 财政年份:
    2019
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Modeling for the sensor based gripping and separation of textile semi-finished productswith vacuum grippers
基于传感器的真空夹具对纺织半成品的抓取和分离建模
  • 批准号:
    397485737
  • 财政年份:
    2018
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Model-based assembly optimization for the automation of electric drive production with minimum unbalance
基于模型的装配优化,实现电力驱动生产自动化,实现最小不平衡
  • 批准号:
    350459107
  • 财政年份:
    2017
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Semi-active component for chatter suppression of metal cutting machine tools
用于金属切削机床颤振抑制的半主动元件
  • 批准号:
    329109043
  • 财政年份:
    2017
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Methodology for a near net shape, wrinkle-free production of textile preforms by using a segment based die draping
使用基于分段的模具悬垂技术近净形状、无皱生产纺织预成型件的方法
  • 批准号:
    377740863
  • 财政年份:
    2017
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Process modeling of linear coil winding processes with a subsequent deformation model
使用后续变形模型对线性线圈缠绕过程进行过程建模
  • 批准号:
    273536303
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Research Grants
Process model for the tool-free production of metallic components with the Arburg Freeforming Process
使用阿博格自由成型工艺免工具生产金属部件的工艺模型
  • 批准号:
    274091127
  • 财政年份:
    2015
  • 资助金额:
    --
  • 项目类别:
    Research Grants

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