圆柱铣刀铣削力过程的物理建模

密切结合先进制造技术的需要,以虚拟制造技术作为研究课题,运用金属切削理论等,对铣削力建模进行了系统深入的研究.该模型中考虑了前刀面上作用的正压力和摩擦力,给出了适用于圆柱螺旋刃铣刀的三维单元铣削力模型.论文为丰富虚拟制造建模理论体系、开发实用的铣削加工过程物理仿真系统奠定了坚实的基础.     

铸造不锈钢端面铣削力的实验研究

通过测力系统测量了铸造不锈钢水平面铣削的铣削力，得出了不同铣削方式的铣削力随铣削参数变化的曲线，分析了不同的铣削参数对铣削力的影响规律。其实验结果应用于铸造不锈钢搅拌浆的加工。大大提高了铣削效率。     

铲齿成形铣刀的计算机辅助设计

介绍了在ＡｕｔｏＣＡＤＲ１４ 环境下,利用内嵌的ＡｕｔｏＬＩＳＰ语言,二次开发的铲齿成形铣刀ＣＡＤ系统,包括系统的工件廓形输入方法、工件斜置处理功能、系统结构以及各功能模块     

Optimisation of face-milling cutters by use of a computeraided milling-system simulator (Camss)

This paper focuses on the improvement of the cutting process in milling operations by the reduction of vibrations. For that purpose, a non-uniform chiploading pattern is considered as the design parameter, which is achieved by controlling individual insert geometry, namely axial rake and radial rake angles. In the development of the system model, a complete governing equation that describes the milling process is derived and formulated. The model can represent the closed-loop configuration that consists of the cutting process, structural dynamics and a feedback loop. Based on this model, a computer-aided milling-system simulator (CAMSS) is developed. It takes into account the forced-vibration criterion as well as the self-excited vibration to optimise the cutter geometry. Therefore, it should be able to investigate the effects of cutter geometry on chip loading and vibration. A series of comparisons showed that the optimal cutter was subject to fewer vibrations and lower cutting forces than the conventional one.     

铁路车辆零件成形修复工艺和基于Solidworks的可转位成形铣刀设计

铁路车辆上部分零件磨损后,需要修复再利用.成形铣削工艺比旧工艺效率高、误差小、易操作.采用传统方法设计可转位成形铣刀,会遇到整体刃形搭接、刃形误差控制、刀片位置确定等既繁琐又易出错的复杂问题.利用Solidworks软件的实体建模操作功能可以很方便地解决可转位成形铣刀设计中的难点问题,并使整个设计过程变得简单而快捷.     

变径细长轴类零件的旋风铣削方法研究

提出了一种用旋风铣削代替车削加工变径细长工件的加工方法。介绍了该方法的加工原理和刀具与工件的相对运动关系,设计了数控变径旋风铣床。此加工方法可以有效地提高变径细长工件的径向尺寸精度、表面质量及生产效率,减小工件表面的形状误差,具有广泛的工程意义。     

干式切削在铣削加工中的应用

干式切削是绿色制造工艺技术，已成为金属切削加工发展的趋势之一，分析了干式切削加工对刀具的要求，讨论了刀具材料的选择，分析了干式切削在铣削中的应用实例。     

立铣刀用弹簧夹头的夹持稳定性分析

对直柄立铣刀切削时的受力、变形及影响夹持稳定性的因素进行了分析，阐述了立铣刀夹持不稳对铣削质量的影响，提出了保证立铣刀夹持稳定性的措施。     

立铣铣削加工参数和铣刀几何参数的计算机辅助设计

在立铣加工过程动态铣削力非线性数学模型的基础上 ,采用变步长数值积分算法和递推算法建立起动态立铣加工过程的计算机仿真模型。通过输入不同的立铣加工参数和铣刀的几何参数 ,在时域内利用计算机来仿真机床的铣削振动。以刀具—工件系统的相对振动位移振幅最小为目标 ,完成铣削加工参数和铣刀几何参数的设计。     

A Cutting Force Model for a Waved-Edge End Milling Cutter

This paper presents a model for predicting the cutting forces for waved-edge milling cutters that are widely used in rough machining. The development of the model is based on the analysis of the complicated cutting edge of waved-edge cutter. According to the existing local cutting force model and from the relationship of local cutting force and chip load, local cutting force can be derived. Then the model is obtained by dividing the cutter into a number of differential elements in the axial direction and summarising the resultant cutting force produced by each differential cutter disc engaged in the cut. A numerical algorithm is introduced for the calculation of total force and the calibration of the relevant parameters in the model. A series of experiments under different cutting conditions are conducted to confirm the validity of the developed model. The agreement between the experimental and simulative results is satisfactory, which shows that the model is effective for cutting force prediction in end milling with waved-edge cutters. ID="A1"Correspondance and offprint requests to: Prof. L. Zheng, Institute of Manufacturing Engineering, Department of Precision Instruments and Mechanology, Tsinghua University, Beijing, 100084, P. R. China. E-mail: lzheng@tsinghua.edu.cn     

铜合金的高速铣削加工的研究

通过对铜合金的高速铣削加工实验,对铜合金的高速铣削加工时的切削力、金属去除率、表面质量、切削热、刀具材料及刀具耐用度进行分析和研究.从而得出,硬质合金和人造金钢石非常适合于对铜合金的高速铣削加工,而且用高速铣削加工出的铜合金零件的表面质量和加工精度是非常理想的,往往毋需再进行进一步的精加工.     

大型齿圈铣削表面质量研究

为提高大型齿圈铣削加工的齿面质量,对盘形铣刀铣齿加工进行实验研究。通过3因素3水平的正交试验分析铣齿参数（铣削转速、轴向进给速度、径向切深）对铣削力矩的影响规律;并以齿面粗糙度、硬度及残余应力为齿面质量指标,研究铣齿参数对各指标的影响规律。最终在选择的铣齿参数范围内,以齿面质量为指标,利用极差分析和方差分析确定了铣齿参数的最优组合。     

数控铣削仿真系统中刀具几何体生成算法

针对球头铣刀给出了用于三轴数控铣削仿真系统的一种快速、精确的刀具扫描体生成算法；基于数控仿真技术的曲线建模方法，给出了数控切削物理仿真所需的关键几何因素－－刀具切削刃的几何表达式。     

航空薄壁件三维铣削过程的有限元仿真

铣削加工中铣削力是导致加工变形的直接原因,而航空薄壁件加工中,加工变形是加工误差产生的主要因素。通过有限元法对航空薄壁件的铣削过程进行三维仿真模拟,揭示了切削深度、切削速度以及摩擦因素对切削力的影响。     

氮气介质下铣削钛合金时的刀具磨损研究

通过大量的试验 ,对氮气介质下铣削钛合金时的刀具寿命和磨损特征进行了分析和研究 ,从而得出了在氮气介质下铣削钛合金比干铣削具有明显优势的结论 ,探讨了氮气介质下铣削钛合金时的刀具磨损机理。     

棱形成型车刀截形的计算机辅助测量

介绍了利用１９ＪＰＣ计算机辅助测量系统对棱形成型车刀截形进行计算机辅助测量的原理和方法。     

Study on the Form Error Evaluation Model of a Conical-Shank Ball-End Milling Cutter

This paper presents a complete form error evaluation model of a conical-shank ball-end cutter. The complete conical-shank ball-end cutter comprises three major revolving portions including the conical shank, cylindrical section, and spherical head. By using the central line of the minimum circumscribed conical shank as a datum axis and employing profile data measured directly from cutter surfaces, the proposed evaluation method systematically computes the exact revolving envelopes of the conical shank, cylindrical part, and spherical part separately, and then combines them. One application example is presented to illustrate the effectiveness of the proposed modelling method. This paper provides a simple, logical, and precise method for the quality evaluation of a special rotating cutter and can be further extended for use in the quality assessment of various complicated cutters.