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采用圆弧刃光栅刻画刀具,实现在线换刃技术是解决光栅刻画刀具使用寿命问题的一种有效的途径。在线换刃圆弧光栅刻画刀具对刃口质量及精度要求高,刃磨制作工艺难度大,且国内外市场几无此类刃磨设备,需要自行设计制作圆弧刃光栅刻画刀具刃磨机床。在圆弧刃光栅刻画刀具刃磨试验设备设计制作及圆弧刃光栅刻画刀具刃磨制作工艺研究基础上,针对圆弧刃光栅刻画刀具的刃磨特点,设计新型的基于杠杆模式施载的圆弧刃光栅刻画刀具刃磨机床;根据传统机床的设计程序,对刃磨机床的功能、总体设计及详细结构设计展开研究,并对施载与微进给机构进行了振动分析,排除了出现共振的可能性。最后完成了该机床的机械装调,并刃磨制作一把圆弧刃光栅刻画刀具,其定向角∠D=63°,刀尖角∠J=90°,刃圆半径R=8.56mm,在460倍体视显微镜下观察无崩口等缺陷,刃口弧线清晰可见。刀具检测及观测结果表明,所设计的圆弧刃刀具刃磨机床适用于圆弧刃光栅刻画刀具的刃磨制作,所采用的分析及设计方法对圆弧刃刀具刃磨机床及其他机床的设计和研制具有实际指导意义。 相似文献
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微圆弧金刚石刀具是实现微结构功能表面机械加工的必备工具之一,高性能刀具可提高微结构表面精度和质量一致性。针对机械刃磨技术,研究微圆弧金刚石刀具的定向设计、制造工艺和装备,分析不同定向刀具的切削刃强度与其刀刃圆弧波纹度、锋利度和耐用度的关系。结果表明,微圆弧金刚石刀具的使用性能与其定向方案有关;针对不同定向的刀具,采用专门的刃磨工艺参数可减小因定向不同导致的刀具质量差异。采用最新研制的金刚石刀具专用刃磨机床,可以获得刀刃圆弧波纹度优于30 nm/60°包角、锋利度优于50 nm的微圆弧金刚石刀具。 相似文献
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《机械工人(冷加工)》1976,(2)
为了解决机夹硬质合金刀片刃磨的困难,进一步促进机夹刀具的推广应用,我厂工具科不久前制造使用了台式机夹硬质合金刀片刃磨机。这种刃磨机,具有体积小、重量轻、制造容易、操作方便等特点。使用这种刃磨机,可完成一块刀片周边、上下边、断屑槽和刀尖圆弧等多道工序 相似文献
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《机械工人(热加工)》1976,(2)
为了解决机夹硬质合金刀片刃磨的困难,进一步促进机夹刀具的推广应用,我厂工具科不久前制造使用了台式机夹硬质合金刀片刃磨机。这种刃磨机,具有体积小、重量轻、制造容易、操作方便等特点。使用这种刃磨机,可完成一块刀片周边、上下边、断屑槽和刀尖圆弧等多道工序 相似文献
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《机械工人(冷加工)》1976,(2)
我厂在推广机夹刀具过程中,为了刀片刃磨的方便,三结合技术革新小组,在学习兄弟厂先进经验的基础上,通过三个月的努力,设计制造成功了两台工具——01型机夹刀片刃磨机。实践证明,这种刃磨机应用效果很好,满足了我厂推广机夹刀的需要。整个刃磨机的结构如附图所示。它是利用金刚石砂轮,刃磨多种硬质合金机夹刀片切削刃部几何形状的专用设备。 相似文献
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德国孚尔默(VOLLMER)机床公司是世界著名的锯片及工具刃磨设备的专业制造公司,其产品以设计独特、制造精良、操作简便、使用寿命长、便于维护等特点著称。产品主要包括硬质合金锯片刃磨机、高速钢及整体硬质合金锯片刃磨机、金刚石工具加工设备和普通工具磨床。在2005年的中国国际机床展上,孚尔默(太仓)机械有限公司总经理ErwinGeissler先生接受了记者的采访。这次展会VOLLMER公司展出了刀具刃磨领域里的最新技 相似文献
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《机械工人(热加工)》1976,(2)
我厂在推广机夹刀具过程中,为了刀片刃磨的方便,三结合技术革新小组,在学习兄弟厂先进经验的基础上,通过三个月的努力,设计制造成功了两台工具——01型机夹刀片刃磨机。实践证明,这种刃磨机应用效果很好,满足了我厂推广机夹刀的需要。整个刃磨机的结构如附图所示。它是利用金刚石砂轮,刃磨多种硬质合金机夹刀片切削刃部几何形状的专用设备。主要特点及性能 1.采用1A07112电动机做为磨头。金刚石砂轮,经过弹簧套直接装 相似文献
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机械刻划长焦距凹面金属光栅的研制 总被引:1,自引:6,他引:1
对大曲率半径(即长焦距)金属基底凹面光栅的机械刻划技术做了研究。为了刻制长焦距凹面光栅,设计和研制了弹性顶针式光栅刻划刀刀架,它具有适用于刻划平面光栅和长焦距凹面光栅的双重功能。给出了描述光栅刻划刀圆弧形刀刃曲率半径与凹面光栅曲率半径、光栅口径、金刚石刀头横向尺寸之间关系的数学表达式,理论分析了光栅刻划刀圆弧形刀刃曲率半径的取值范围,研制了10.6 μm激光系统用曲率半径为30 m的凹面金属光栅。检验结果表明,光栅的槽形质量较好,光栅的衍射效率可达96.8%以上。 相似文献
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本文对金刚石刀具刃口钝圆半径求解方法展开研究,以有效提升金刚石刀具刃口锋利度的测量精度。文中分析了原子力显微镜(AFM)扫描探针几何形貌对金刚石刀具刃口锋利度测量结果的影响,并提出了基于切点约束和AFM探针针尖半径补偿的刀具刃口钝圆半径求解方法;讨论了消噪滤波、测量角度误差以及切点分离方法对测量结果的影响;在高精度测量平台上完成了金刚石刀具刃口锋利度测量,并将被测量的刀具用于飞切加工KDP晶体。结果表明:提出的刃口钝圆半径求解方法能够准确求解金刚石刀具的刃口锋利度,测量结果能很好地描述金刚石刀具的刃口锋利程度,可以为金刚石超精密切削加工的选刀和用刀提供有效指导。 相似文献
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自旋车刀在大大高于普通高速钢车刀允许使用速度下,不会发生急剧磨损,在相同切削条件下,其耐用度比固定圆弧刃车刀提高15~67倍。建立了估计自旋车刀耐用度的公式,试验表明该式基本符合实验结果。自旋车刀在切削含23%Si的过共晶铝硅合金时,其磨损速度可与金刚石车刀相比。 相似文献
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《机械工程学报(英文版)》2018,(6)
Lower surface roughness and sharper cutting edge are beneficial for improving the machining quality of the cut?ting tool, while coatings often deteriorate them. Focusing on the diamond coated WC?Co milling cutter, the abrasive flow machining(AFM) is selected for reducing the surface roughness and sharpening the cutting edge. Comparative cutting tests are conducted on di erent types of coated cutters before and after AFM, as well as uncoated WC?Co one, demonstrating that the boron?doped microcrystalline and undoped fine?grained composite diamond coated cutter after the AFM(AFM?BDM?UFGCD) is a good choice for the finish milling of the 6063 Al alloy in the present case, because it shows favorable machining quality close to the uncoated one, but much prolonged tool lifetime. Besides, compared with the micro?sized diamond films, it is much more convenient and e cient to finish the BDM?UFGCD coated cutter covered by nano?sized diamond grains, and resharpen its cutting edge by the AFM, owing to the lower initial surface roughness and hardness. Moreover, the boron incorporation and micro?sized grains in the underly?ing layer can enhance the film?substrate adhesion, avoid the rapid film removal in the machining process, and thus maximize the tool life(1040 m, four times more than the uncoated one). In general, the AFM is firstly proposed and discussed for post?processing the diamond coated complicated cutting tools, which is proved to be feasible for improving the cutting performance 相似文献
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The measurement and evaluation technology of high precision diamond tools is critically important for supporting the ultra-precision machining. In practical cutting process, the edge profile quality of the diamond tool, including sharpness, micro defects, roughness and tip arc waviness, greatly affects the cutting quality. It is very difficult to measure and evaluate the diamond tool edge profile due to the high precision of tool edge profile and complexity of various measurement parameters. In this paper, an integrated method for measurement and characterization of diamond tools is proposed, which is based on an Atomic Force Microscope (AFM) module. Multiple technical indexes of diamond tools are obtained and validated based on the presented research and cutting experiments, and the evaluation model for each technical index is also proposed. The integrated measurement equipment, including an AFM, precision adjustment device and aerostatic bearings, has been established based on the accuracy requirement of measurement parameters. The edge sharpness, micro defects, surface roughness and tip arc waviness have been obtained based on the evaluation model and experimental data. The experimental results show that the measurement accuracy meets the requirements of the comprehensive evaluation of the diamond tool edge profile. The research work will also contribute to the development of ultra-precision machine. 相似文献
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W.-F. Chen C.-K. Chen H.-Y. Lai 《The International Journal of Advanced Manufacturing Technology》2002,20(3):169-179
The paper presents a geometric modelling approach for the precision design and NC machining of a concave-arc ball-end milling
(CABEM) cutter which is an important tool for mould-making industries. This paper presents systematic models of the cutting
edge, helical groove, and grinding wheel design for the NC machining of a CABEM cutter. Both the normal to the revolving axis
and the tangent to the groove, are used to derive the required precision sectional profiles of the grinding wheel. In compliance
with the maximal sectional radius of the cutter, the profile of the groove section and both the radial and axial cutting speeds
of the grinding wheel are computed in sequence. Using the computer simulation results of the groove actually obtained, this
paper proposes a method to resolve the problems of the residual revolving surface and the narrow cutting edge strip. This
paper is intended to serve as a reference for the design and NC machining of cutters of this type . 相似文献