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| 1 | 精密复杂曲面零件多轴数控加工技术研究进展显示文摘多轴数控(CNC)加工是现代工业中的标志性加工技术,在能源、动力、国防、运载工具、航空航天等制造领域的关键零部件加工中占据着主导地位。随着这些领域中高端装备性能要求越来越高,涌现出一大批加工难度大、性能指标要求苛刻的精密复杂曲面零件,其加工已由以往单纯的形位精度要求,跃升为形位与性能指标并重的高性能加工要求,给传统的复杂曲面零件数控加工技术带来了严峻挑战。针对精密复杂曲面零件形位精度保证、加工效率提升及动态切削过程可控等关键技术问题,从多轴数控加工的高效加工路径设计、进给率规划以及加工动力学分析等方面,详细论述相关加工技术的研究现状、存在的难点和核心问题,指出可行的解决途径、突破方向和未来的发展趋势,为实现复杂曲面零件的高性能数控加工提供参考和依据。 | 徐金亭 牛金波 陈满森 孙玉文 | 2021 | 航空学报2021，42，10： | 25 |
| 2 | Milling stability analysis using the spectral method显示文摘This paper focuses on the development of an efficient semi-analytical solution of chatter stability in milling based on the spectral method for integral equations. The time-periodic dynamics of the milling process taking the regenerative effect into account is formulated as a delayed differential equation with time-periodic coefficients,and then reformulated as a form of integral equation. On the basis of one tooth period being divided into a series of subintervals,the barycentric Lagrange interpolation polynomials are employed to approximate the state term and the delay term in the integral equation,respectively,while the Gaussian quadrature method is utilized to approximate the integral term. Thereafter,the Floquet transition matrix within the tooth period is constructed to predict the chatter stability according to Floquet theory. Experimental-validated one-degree-of-freedom and two-degree-of-freedom milling examples are used to verify the proposed algorithm,and compared with existing algorithms,it has the advantages of high rate of convergence and high computational efficiency. | DING Ye ZHU LiMin ZHANG XiaoJian DING Han | 2011 | Science China(Technological Sciences)2011，54，12： | 11 |
| 3 | 铣削过程稳定性分析的时域法研究进展显示文摘高速铣削是高性能加工的重要支撑技术,获取无颤振铣削工艺参数是保证铣削加工精度、提高加工效率的前提.再生颤振是引起铣削过程失稳的主要因素,考虑再生效应的动态铣削过程可以表述为含周期系数矩阵的时滞微分方程组.本文从时滞动力系统的动态响应数值求解的角度,对基于动力学模型的铣削颤振稳定性时域(半)解析方法以及应用进行了综述,着重介绍了基于积分方程的半解析方法,并展望了铣削过程稳定性分析的发展趋势. | 丁汉 丁烨 朱利民 | 2012 | 科学通报2012，57，31： | 10 |
| 4 | Fault feature enhancement of gearbox in combined machining center by using adaptive cascade stochastic resonance显示文摘The difficulty to select the best system parameters restricts the engineering application of stochastic resonance(SR) . An adaptive cascade stochastic resonance(ACSR) is proposed in the present study. The proposed method introduces correlation theory into SR,and uses correlation coefficient of the input signals and noise as a weight to construct the weighted signal-to-noise ratio(WSNR) index. The influence of high frequency noise is alleviated and the signal-to-noise ratio index used in traditional SR is improved accordingly. The ACSR with WSNR can obtain optimal parameters adaptively. And it is not necessary to predict the exact frequency of the target signal. In addition,through the secondary utilization of noise,ACSR makes the signal output waveform smoother and the fluctuation period more obvious. Simulation example and engineering application of gearbox fault diagnosis demonstrate the effectiveness and feasibility of the proposed method. | LI Bing LI JiMeng HE ZhengJia | 2011 | Science China(Technological Sciences)2011，54，12： | 6 |
| 5 | 基于等弓高误差法的双回转台五轴数控加工后置处理器开发显示文摘为实现B-C轴双转台五轴数控机床复杂曲面的计算机集成制造,在建立机床三维模型的基础上,推导了机床各轴运动坐标同刀位数据之间的映射关系,计算了机床平动坐标和回转坐标间的转换,采用等弓高误差法优化走刀步长,调整走刀行距,解决了普通后置处理器在刀具路径设置方面撞刀、过切的问题,在满足误差要求的情况下减少了刀具路径总长,提高了加工效率。采用VisualC++开发了专用后置处理器,通过VERICUT软件实现了仿真加工,并对复杂球面零件进行加工实验,验证了该后置处理器的可靠性和高效性。 | 高峰 朱延炎 解瑞东 周飞 李艳 | 2017 | 计算机集成制造系统2017，23，6： | 5 |
| 6 | On time-domain methods for milling stability analysis显示文摘As a basic and advanced machining technique,the high-speed milling process plays an important role in realizing the goal of high performance manufacturing.From the viewpoint of machining dynamics,obtaining chatter-free machining parameters is a prerequisite to guaranteeing machining accuracy and improving machining efficiency.This paper gives an overview on recent progress in time domain semi-analytical methods for chatter stability analysis of milling processes.The state of art methods of milling stability prediction in milling processes and their applications are introduced in detail.The bottlenecks involved are analyzed,and potential solutions are discussed.Finally,a brief prospect on future works is presented. | DING Han DING Ye ZHU LiMin | 2012 | Chinese Science Bulletin2012，57，33： | 3 |
| 7 | 面向数控加工的自由曲面区域分割技术显示文摘自由曲面主要是通过数控加工实现,数控加工刀具轨迹规划对自由曲面加工的效率和质量有重要的影响。基于区域的刀具轨迹生成策略是通过识别自由曲面上有意义的特征,将具有相似的加工属性的局部曲面分割成相应的区域,这个过程称为区域分割,再以区域为单位自动生成数控加工刀具轨迹。该加工策略的关键技术是区域分割,针对面向数控加工的自由曲面区域分割技术的进行归纳综述,主要分三个部分:面向数控加工的自由曲面区域的概念和分类、区域分割算法、区域分割技术在自由曲面数控加工中的应用。对以上每个方面中涉及的概念和方法进行简短介绍,就学者们所提出的方法的主要优点和缺点进行讨论。在文章的最后,提出了目前该研究领域仍存在的问题,并对发展方向进行了展望。 | 王洪申 汪雨蓉 张翔宇 豆永坤 | 2017 | 机械设计与研究2017，33，2： | 3 |
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