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切削颤振特性的影响因素
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切削颤振特性的影响因素
官方公共微信结果表明，连续改变机床主轴转速时振动响应的最低点即为不发生颤振的稳定切削点。
The results show that the vibrational response varies regularly when the spindle speed is continuously changed from low to high.
本文研究了一种实现颤振切削自动化的刀具磨损检测方法。实际应用表明，这种方法收到了良好的效果。
The article discusses an automatic tool wear measuring method during chatter cutting, practical application shows very good results.
同时，理论与试验分析表明强迫振动随切削速度的增加而增强，颤振随切削速度变化具有一定的周期性；
The theoretical study and experimental analysis show that the forced vibration becomes stronger with the increase of milling speed while chatter presents a certain periodicity with the speed change;
然后根据颤振系统与切削周期的能量关系，计算出最优相位差及相应的切削周期；
After the chatter frequency is idenrified through the power spectrum of the chatter signals dy carrying out FFT, the best phase difference and the related tooth cutting period are calculated.
结果表明，连续改变机床主轴转速时振动响应的最低点即为不发生颤振的稳定切削点。
The results show that the vibrational response varies regularly when the spindle speed is continuously changed from low to high. The lowest point of the response is the stable cutting point.
通过试验研究了切削颤振自动控制的稳定切削点在线识别方法。
The method to automatically control cutting chatter based on on-line recognition of stable cutting point is studied by experiments.
提出一种实用的通过主轴转速寻优调整对再生型切削颤振进行自动控制的方法。
An applicable method to control regenerative cutting chatter automatically based on the optimal regulation of spindle speed is introduced.
实验与仿真结果表明，电流变阻尼器能很好地实现振动的实时控制，并能有效地抑制切削颤振的发生。
The results of experiment and simulation show that this type of ER fluid damper can achieve the real-time control of cutting chatter very well.
在切削颤振的预报技术方面，本文系统地讨论了切削振动响应在颤振建立过程中的特征表达问题。
For the early forecasting of cutting chatter this dissertation systematically discusses the characteristic representation of cutting vibration response in chatter development.
对高速切削加工稳定性模型与机理、切削颤振的预防控制和在线监视控制，进行了归纳和分析。
Model and mechanism of high speed cutting stability, stability calculative control of cutting chatter and methods for on-line predictive control were concluded and analyzed.
通过对摩擦力形成理论的归纳与分析，提出了金属切削力等效于刀具—工件副间摩擦力的新概念，由此导出了计算切削颤振系统阻尼系数的方法及相应结论。
Through inducing and analyzing the formation theory of friction, the article advances a new concept that the metal cutting force equals the friction of the tool and workpiece.
研究了通过调节数控机床伺服参数，控制极限切削宽度来抑制切削颤振的新方法。
Tension control methods and magnetic-powder clutch, inverters , servo control principle of several dyeing machine were introduced.
首先，本文讲述动态系统的一些基本概念和切削颤振的线性理论，作为非线性理论方面的研究成果的基础。
Firstly, fundamental conceptions of dynamic system and linear theory of cutting vibration are mentioned, which is used as the mainstay of nonlinear theory in the dissertation.
研究了通过调节数控机床伺服参数，控制极限切削宽度来抑制切削颤振的新方法。
A new method for suppressing cutting chatter is studied by adjusting servo parameters of the numerical control (NC) machine tool and controlling the limited cutting width.
最后对切削颤振的相位特性进行了试验考证。
The experiments to verify the phase characteristics of cutting chatter are conducted.
本文根据频段能量原理提出了一种可靠的判据，并利用微型计算机实现了切削颤振的在线监测。该方法具有快速、灵敏、准确和抗干扰能力强等优点。
In accordance with the frequency band-energy principle, a reliable criterion for chatter judgement is proposed and the in-process detection of cutting chatter is realized by the use of microcomputer.
模拟分析与试验结果表明，连续改变刀具角度是在线控制切削颤振的有效方法。
Simulation analysis and experiment results indicate that changing tool geometric angles continuously in cutting process is an effective method in on-line controlling of cutting vibrations.
对国内外切削颤振领域的研究工作进行评述，分析了现有的颤振预报方法的优缺点。
The work in the field of prediction of cutting chatter is summarized. The advantages and disadvantages are also analyzed in this paper.
针对规避切削颤振问题，应用相对切削速度概念，提出了速度型动态切削力表达式以及车削或镗削的振动力学模型。
Applying the concept of relative cutting velocity, the expression of velocity type dynamic cutting force and the mechanics model of chatter vibration in turning or boring process were advanced.
针对金属切削加工过程中经常出现的振动现象，对切削颤振发生的各种原因及影响因素进行了分类，并从刀具和切削参数的角度进行了详细分析。
Aiming at vibration phenomena caused in metal machining process, This paper classifies the reason and the factors of influence, which are expounded from the cutting tool and the cutting parameters.
讨论了车削加工中心切削颤振的预报控制方法。
The predictive control of cutting chatter at the center of turning process is mainly discussed in this paper.
切削颤振是影响金属切削加工生产率和加工质量的重要因素。
Chatter during the cutting process is an undesirable phenomenon because it is a limiting factor for the productivity, accuracy of machining and it leads to earlier tool failure.
为了对切削颤振进行检测与控制，自主设计了基于专家系统的数控铣床切削振动控制软件。
In order to test and control cutting chanter, a vibration controlling system for CNC milling machine is developed, which is based on the techniques of expert systems.
因此，多年来国内外学者针对切削颤振的机理、在线监测和在线控制进行了大量的研究。
It can bring a lot of bad effects on machining, so mechanism, technologies of on-line monitoring and control for machine tool chatter have been studied by domestic and foreign scholars for many years.
讨论了切削颤振状态识别的信息融合方法，分别给出了基于基本概率分配函数和基于证据区间值的颤振状态识别方法。
Two kinds of information fusion method of the cutting chatter state recognition are given based on the basic probability assignment function, Pl(A) and (Bel(A).
振动钻削方法具有消减切削颤振的特殊功能，能够取得良好的加工效果。
Vibration drilling possess the special function of reducing chatter vibration, thus achieving a good drilling effects.
根据电流变材料的非线性振动特性和再生型颤振控制理论提出了切削颤振的变刚度控制方法。
The electro-rheological fluid is used to design a tunable-stiffness boring bar which can be employed for chatter control using varying stiffness method.
推导了机床再生型切削颤振系统极限切削宽度随主轴转速变化的计算公式。
The correlation between the cutting width limit and the rotation speed of the spindle in a regenerative chatter system was derived.
试验研究结果展示了切削颤振产生和发展的过程和特征，同时验证了本文理论分析的正确性。
The experimental research results demonstrate the process and the characteristic during the cutting chatter occurring and expanding, and also the accuracy of relative theories are confirmed basically.
模拟分析与试验结果表明，连续改变刀具角度是在线控制切削颤振的有效方法。
Simulation analysis and experiment results indicate that changing tool geometric angles continuously in cutting process is an effective meth…
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再生型车削颤振的在线综合预报研究
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再生型机床切削颤振系统稳定性极限预测
该文从分析再生型切削颤振系统的稳定性入手,着重研究了稳定性极限切削宽度b随机床主轴转速n的变化规律,分析了影响机床切削系统稳定性的主要因素,研究了机床切系统稳定性极限的预测方法. 论文对机床切削系统动力学参数进行了试验识别,并以所识别的动力学参数对所研究的机床切削系统随主轴转速n变化的相应的切削宽度b值进行了预测. 论文首次使用时变切深的试验方法对稳定性极限预测结果进行了试验考证.考证结果表明,预测结果与试验结果基本相符.论文还用时变主轴转速试验方法测得极限切削宽度b随主轴转速n变化曲线,与时变切深试验方法相比,主观因素较多,准确性相对较差,但它有实施起来相对较为简捷的优点. 该文试验在SB-CNC精密机床上进行.
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