Research on the Oscillation in Centerless Grinding Technology When Machining Bearing Steel.
Research on the Oscillation in Centerless Grinding Technology When Machining Bearing Steel.
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DOI：
10.3390/ma15144968
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发表时间：
2022-07-17
期刊：
影响因子：
--
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中科院分区：
文献类型：
--
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在当今的工程行业中，技术诊断在改善加工中心和自动化生产线的管理方面具有许多优势。随着包括机器诊断在内的第四次工业革命正在实施，添加振动诊断领域信息的想法诞生了。工件或机床的振动会对工件的加工表面的几何参数产生负面影响。通过振动诊断，研究了无心磨削过程中切削参数对轴承钢工件振动的影响。本出版物涉及无心磨床机械零件的振动。振动由加速度传感器记录，加速度传感器也放置在引导工件的支撑尺上，记录的数据以统计特性（最小值、下四分位数、中值、上四分位数、最大值）的形式作为加速度值统计处理的输入参数。在本文中，该程序用于选择最佳切削参数（支撑轮的速度），其中根据上述统计特性选择出现最小振荡值的加工参数。该优化过程显示振动值增加，在标尺上达到最高振幅，即 11 m/s2 的加速度，随后通过 STFT 检测到其起源，因为怀疑发生了共振事件或激发了机器的固有频率。 STFT 分析确定了机器启动时的共振区域，该区域由激发机器共振的主轴速度决定。向技术人员提供了 1950 至 2150 rpm 之间的速度范围（对应于累积共振），以确保机器不会在 400 至 760 Hz 的共振区域附近运行，直至消除不良现象。各个测量的结果提供了有关切割参数的理想设置和机器当前状态的信息。
In today’s engineering industry, technical diagnostics presents many advantages for improving the management of machining centers and automated production lines. As the fourth industrial revolution is currently being implemented, which includes machine diagnostics, the idea of adding information from the field of vibrodiagnostics was born. The vibration of the workpiece or machine tool negatively affects the geometric parameters of the machined surfaces of the workpiece. Through vibrodiagnostics, the influence of cutting parameters on the oscillation of a bearing steel workpiece during centerless grinding is investigated. The presented publication deals with the vibration of the mechanical parts of a centerless grinding machine. The oscillations are recorded by acceleration sensors, which are also placed on the support ruler in which the workpieces are guided, and the recorded data are input parameters for statistical processing of acceleration values in the form of statistical characteristics (minimum, lower quartile, median, upper quartile, maximum). In this paper, this procedure was applied for the selection of the optimum cutting parameters (for the speed of the support wheel), where the machining parameters at which the minimum oscillation values occur were selected based on the above-mentioned statistical characteristics. This optimization procedure revealed increased vibration values which reached the highest amplitude on the ruler, namely accelerations of 11 m/s2, the origin of which was subsequently detected by STFT because the occurrence of resonance events or the excitation of natural frequencies of the machine were suspected. The STFT analysis identified a resonant region at machine start-up determined by the spindle speed which excites the resonance on the machine. The speed range between 1950 and 2150 rpm, which corresponds to the built-up resonance, was provided to the technologists to ensure that the machine was not operated around this resonance region at 400 and 760 Hz until the undesired phenomenon was eliminated. The results of the individual measurements provided information on the ideal setting of the cutting parameters and the current state of the machine.
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影响因子：
3.2
作者：
de Oliveira Teixeira, Patricia;Brimmers, Jens;Bergs, Thomas
通讯作者：
Bergs, Thomas
DOI：
10.1115/1.2801227
发表时间：
1997-06-01
影响因子：
1.7
作者：
Zhou, SS;Gartner, JR;Howes, TD
通讯作者：
Howes, TD
DOI：
10.3390/ma13194242
发表时间：
2020-09-23
期刊：
Materials (Basel, Switzerland)
影响因子：
--
作者：
Kuntoğlu M;Aslan A;Pimenov DY;Giasin K;Mikolajczyk T;Sharma S
通讯作者：
Sharma S
影响因子：
2.7
作者：
Pimenov, Danil Yurievich;Hassui, Amauri;Gupta, Munish Kumar
通讯作者：
Gupta, Munish Kumar
影响因子：
6.2
作者：
Gupta, Munish Kumar;Song, Qinghua;Kuntoglu, Mustafa
通讯作者：
Kuntoglu, Mustafa