淬硬钢Cr12MoV高速铣削加工试验研究

针对淬硬钢Cr12MoV进行高速铣削研究,重点研究铣削速度、冷却方式对高速铣削加工表面质量(表面粗糙度Ra)的影响,结果表明,油液冷却加工表面质量比气体冷却好;采用油液冷却加工表面质量随铣削速度的增加而提高.淬硬钢的高速铣削加工既可以保证加工表面的质量,又可以获得较高的生产效率.     

淬硬钢的铣削加工

介绍适合于淬硬钢铣削加工的刀具材料与刀具涂层技术。针对淬硬钢的铣削加工,通过切削实验,比较硬质合金铣刀不同涂层材料的切削性能,探索适合高度金属材料的高速加工方法。     

淬硬钢高速铣削试验研究

针对淬硬钢选择了Cr12MoV进行了高速铣削研究,重点研究了铣削力、刀具对铣削过程的影响。结果表明：铣削方式、刀具螺旋角以及润滑方式对铣削力、刀具磨损的影响是不同的;随铣削速度的增加铣削力呈明显上升趋势。高速铣削刀具后刀面磨损,伴随加工的整个过程。淬硬钢高速铣削加工既可以保证加工表面的质量,又可以获得较高的生产效率。     

汽车大型覆盖件淬硬钢模具的高速铣削加工技术

对于车型种类繁多的我国汽车市场来说,车型的不断更新直接关系着汽车企业的市场竞争力,这就使得汽车企业对高速铣削加工技术存在较高需求.基于此,本文将简单分析汽车大型覆盖件淬硬钢模具铣削加工常见问题,并深入探讨汽车大型覆盖件淬硬钢模具高速铣削加工技术要点,希望研究内容能够给相关从业人员以启发.     

淬硬钢模具型腔高速加工的试验研究

通过整体硬质合金涂层球头立铣刀高速铣削淬硬钢(55HRC)旋钮模具型腔的单因素法切削试验,研究了不同的切削参数及其变化对模具型腔表面粗糙度的影响规律。     

高速铣削淬硬钢的研究进展

对国内外高速铣削淬硬钢的研究成果进行评述.讨论高速切削的概念和特点、切削力、金属软化效应、涂层刀具加工淬硬钢的切削性能、切屑形成机理、冷却方式以及对加工表面的影响,并提出高速铣削淬硬钢研究中的热点问题.     

淬硬钢高速铣削用量确定方法的研究

采用高速铣削技术加工淬硬钢可以大大改善材料去除率和表面粗糙度,并提高淬硬钢加工效率,降低加工成本.为获得必要的加工精度、表面质量及延长刀具寿命,铣削淬硬钢材料除精心选择刀具材料和几何参数外,必须优化铣削用量.基于淬硬钢高速铣削参数对铣削力影响的理论分析,得出高速铣削淬硬钢宜采用高转速、低进给、小切深的方式进行铣削加工的结论.比较分析了确定淬硬钢高速铣削用量的常用3种方法.     

淬硬钢的高速切削加工

淬硬钢以其优良的使用性能在模具行业中占着非常重要的地位，随着高速加工中心在我国的应用的增加，高速加工已成为淬硬钢管等高硬度材料切削加工的主要手段。本文首先介绍了淬硬钢高速加工的概况，针对使用涂层刀具淬硬钢时出现的具体问题，结合实际研究分析了切削刀具，加工工艺参数和走刀方式等对加工过程的影响，并提出一些实际加工中应注意的问题，改善加工条件和提高加工质量的方法。     

淬硬钢高速铣削参数优化试验研究

采用正交试验法对切削力和粗糙度两个试验指标进行优化,最后采用综合平衡法确定出一组最优方案。经验证满足加工要求,达到了试验目的。     

高速铣削淬硬钢表面粗糙度的试验研究

通过切削试验研究了高速铣削淬硬钢时刀具变量中的几何参数(铣刀的前角、后角、螺旋角)、工件变量(工件硬度)和切削参数变量(铣削速度、每齿进给量)对加工表面粗糙度的影响。根据对试验结果的分析得出高速铣削淬硬钢工件表面粗糙度的变化规律。     

Self-adjusting on-line cutting condition for high-speed milling process

Journal of Mechanical Science and Technology - The paper presents an intelligent control system for self-adjusting on-line cutting condition for high speed machining (self-HSM) with considering the...     

Multidisciplinary design optimization of a milling cutter for high-speed milling of stainless steel

The milling cutter’s fracture strength is more important than its chemical stability and thermal conductivity in high-speed milling. The multidisciplinary design optimization (MDO) method is employed to optimize the fracture-resistant performance of a milling cutter in this work. An experimental study on high-speed milling of the martensitic stainless steel 0Cr13Ni4Mo is conducted. The cutting forces and cutting temperature in the milling process are measured to provide initial data for the structural optimization of the milling cutter. The mathematical models of cutting force and cutting temperature are studied. Considering that the induced stress in the milling cutter is generated by thermomechanical coupling, the thermoelastic–plastic governing equation in the milling process is introduced in this work. The sensitivity of the structural parameters to the maximum equivalent stress of the milling cutter is calculated, and the structural parameters that have the greatest effects on the maximum equivalent stress are determined as design variables for the cutters’ optimization. The MDO procedure for the cutter’s optimization consists of updating of solid model, finite element analysis of thermomechanical coupling, postprocessing, and optimization algorithm. The MDO results show that the optimized milling cutter has a better fracture-resistant performance than the initial one. The maximum deformation, overall equivalent stress, and deformation are decreased.     

高速铣削AF1410高强度钢的实验研究

高强度钢具有优异的机械性能和广阔的应用,但切削加工较为困难,存在加工效率低,加工表面质量差等问题.以AF1410高强度钢为研究对象,应用高速铣削的加工方法,使用涂层硬质合金刀片,对AF1410高强度钢进行了高速铣削实验,研究分析了在高速切削条件下刀具磨损、切削力、切削温度以及已加工表面粗糙度的变化规律.研究发现以TiC...     

Surface roughness analysis of hardened steel after high-speed milling

The work refers to analysis of various factors affecting surface roughness after end milling of hardened steel in high-speed milling (HSM) conditions. Investigations of milling parameters (cutting speed v(c) , axial depth of cut a(p) ) and the process dynamics that influence machined surface roughness were presented, and a surface roughness model, including cutter displacements, was elaborated. The work also involved analysis of surface profile charts from the point of view of vibrations and cutting force components. The research showed that theoretic surface roughness resulting from the kinematic-geometric projection of cutting edge in the workpiece is significantly different from the reality. The dominant factor in the research was not feed per tooth f(z) (according to the theoretical model) but dynamical phenomena and feed per revolution f.     

淬硬不锈工具钢高速铣削工艺

结合某种S-136淬硬模具的生产,对S-136淬硬钢高速铣削工艺的刀具选择、冷却方式、进给路线进行了分析.结果表明,对具有大而平底面的模具型腔进行高速铣削时宜采用TiAIN涂层的圆角平头铣刀,使用油雾冷却,进给路线宜采用斜坡切入的圆弧进给方式.     

板式换热器模具高速铣削工艺分析

根据板式换热器模具的特点,全面分析了高速铣削过程,对高速铣削加工板式换热器模具从工艺方案拟定、NURBS插补和铣削路径优化方面进行了分析,描述了高速加工板式换热器模具的可实现性.对推进高速铣削技术在工业企业的深入应用以及发展我国制造业总体水平有着十分重要的意义.     

Cutter path orientations when high-speed finish milling inclined hardened steel

The use of high-speed milling (HSM) for the production of moulds and dies is becoming more widespread. Critical aspects of the technology include cutting tools, machinability data, cutter path generation and technology. Much published information exists on cutting tools and related data (cutting speeds, feed rates, depths of cut, etc.). However, relatively little information has been published on the evaluation of cutter paths for this application. Most of the research focuses on cutter path generation with the main aim on reducing production time. Work concerning cutter path evaluation and optimisation on tool wear, tool life and relevant workpiece machinability characteristics are scant. This paper investigates and evaluates the different cutter path orientations when high-speed finish milling inclined hardened steel, at a workpiece inclination angle of 75°. The results demonstrate that employing a vertical downward orientation achieved the longest life. However, in terms of workpiece surface roughness, vertical upward orientation is generally preferred.     

Tool system for high-speed milling

A model of the tool system for the high-speed milling of high-technology components is developed. The influence of the dimensions of the system components on the roughness of the machined surface is studied. The formulas obtained permit assessment of the milling productivity for the dimensional parameters of the tool system and the roughness, specified for a specific technological process.