可转位球头立铣刀端刃几何造形

建立了平装可转位球头立铣刀端刃几何造形的数学模型,利用该模型可计算出刀体上刀片槽的加工调整参数、刀片圆弧半径以及铣刀几何角度沿切削刃的分布。     

铣刀片槽型的开发研究

对数控面铣刀的刀片槽型进行了开发研究。根据铣削特点,设计了适合不锈钢材料铣削的波形刃槽型刀片。通过对波形刃刀片刃形及其切削所产生切屑剪切变形机理的分析和实验验证,得到一种较理想的铣削不锈钢材料的刀片槽型,提高了刀片寿命。     

产品之窗

大前角与波形刃铣刀片大前角与波形刃铣刀片是工具行业产、学、研、用相结合共同研制的新产品 ,是目前国内唯一研制成功的用于铣削刀具的大前角与波形刃刀片。(1)带刃倾角的大前角铣刀片该刀片采用 18°正前角、11°后角、5°刃倾角 ,是一种右切削铣刀片 ,有四个小平台并带有断屑槽。小平台加强刀尖强度 ,断屑槽控制切屑的卷曲和流向。该刀片适合加工不锈钢等难加工材料。(2 )波形刃正前角铣刀片该刀片的四个切削刃呈波浪形 ,刀尖处圆弧过渡 ,修光刃有倒棱。该刀片最大特点是 :切削时 ,波形刃起力的平衡作用 ,切削力的合力较小 ,消耗功率少…     

特固克刀具贸易（上海）有限公司 TopSlot三刃槽铣刀片

精心设计的磨制刀片在加工过程中精准性更高,这款新的TopSlot三刃槽铣刀皆可用于工件内部及表面切槽加工,槽宽范围从1．2～6．0mm。拥有三个切削刃的刀片使生产的经济性最大化,因为即使一个刃崩坏,其他两个仍可继续使用。     

山高扩展Square T4-08系列性能

<正>山高创新设计的具有4个切削刃和刀片切向安装的Square T4-08方肩铣刀产品系列推出Helical T4-08新型玉米铣刀。该刀具在加工铸铁、钢件、不锈钢、合金等难加工材料时性能优异,是铣槽、铣轮廓及铣方肩的理想选择。与该系列的其它产品一样,Helical T4-08将强壮、可靠的刀片安装槽与多刃刀片相结合,优化了切削稳定性并能进行精确的90°直壁切削。刀片采用切向安装方式,切削力作用于刀片最厚的方向,因     

基于二维元胞自动机的铣刀片温度场算法研究

切削热是铣刀片磨损和破损产生的重要原因.对铣刀片温度场研究的传统方法是有限元法.为了实现三维复杂槽型铣刀片槽型优化中能直接利用分析得到的数据进行自组织动态设计,文中结合切削温度试验,利用元胞自动机理论对铣刀片温度场进行研究,建立了二维波形刃铣刀片温度场算法系统,得出切削中各点的温度场,为刀片槽型重构奠定基础.     

陶瓷不重磨刀片用于精铣

用切削陶瓷FH~3'不重磨刀片作精铣时,可免去磨削这道工序。这与一种所谓的混合陶瓷有关。这种刀片在单齿铣刀中作为宽刃修光刀片使用,以至刀片的全切削刃平行于加工面。由此刀具重磨或换刀后,其调整时间比多刃铣刀短得多。前角为-6°。     

环形铣刀在五轴加工中几何运算的数学模型

基于环形铣刀在五轴加工中建立的几何运算数学模型,通过MATLAB试验分析了刃倾角、曲率半径、残留高度和变形误差对有效切削域的影响。运用本文的研究结果,可以选择合适的刀具位置姿态,使环形铣刀在刀触点位置的有效切削域最大,从而提高加工效率。通过调整刀具姿态使刀触点处由切削力引起的变形误差减小,以保证加工质量。     

旋转铣刀盘

<正> Rotary Technologies Corp公司推出一种新型盘铣刀。该铣刀特点是圆刀片固定在可转换的刀盘上,边切削边旋转,使被加工件一直在接受新切削刃的加工。该公司说此类铣刀刀片上热量少,切削刃可充分利用。与一般铣刀相比,该铣刀的刀片破损少,切削效率高。该刀片的切     

瓦尔特推出Xtra·tec全新铸铁铣刀

<正>凭借Xtra·tec F4049密齿方肩铣刀,瓦尔特提供了一种新的铸铁加工刀具方案,刀体、刀片槽型和刀片材质间完美匹配。面铣刀/方肩铣刀直径50-160mm,切深6.5mm,可精确加工出90°台阶。切削刃一次性校准,可同时进行粗加工和精加工而无需更换刀具,节省了机加工时间。F4049配备专为该款铣刀开发的八刃正方形可转位刀片,采用Tiger·tec(老虎刀片)和     

前刀面槽型结构对D型刀片车削球墨铸铁性能的影响

通过切削力、磨损和冲击切削试验,研究了前刀面槽型结构对D型刀片车削球墨铸铁切削性能的影响。试验结果显示,刀具的第一前角对切削力的影响最大;在10°~15°范围内,刀具前角越大,切削力越低;棱带宽度大的刀片具有更加优异的耐磨损性能;具有正刃倾角的刀片显示出更优异的耐冲击性能。     

基于修正滑移线场模型的倒棱刀具切削力预测

基于材料塑性滑移理论与刀具刃前材料流动状态分析,提出了一种考虑倒棱刀具负前角切削过程下的材料滞流区（死区）和预剪区的修正滑移线场模型,并给出了材料流动剪切应力和刃前切削几何参数的迭代求解方法,揭示了倒棱刃口几何形状与滑移线场几何参数之间的变化规律。将此模型应用于倒棱刀具切削过程,得到了适用于倒棱刀具正交切削力的预测方法。采用有限元仿真和切削试验相结合的方法对所提出的滑移线场模型和切削力预测方法分别进行了验证,模型预测结果与仿真结果和试验测量结果对比误差均在10%以内。研究结果为研究倒棱几何形状对工件材料流动特性和刀具切削性能的影响提供了参考。     

Strategies for grinding of chamfers in cutting inserts

In order to increase tool life and improve workpiece quality, cutting processes with geometrically defined cutters demand inserts with a prepared cutting edge. Chamfers are widely used in many processes, since they can provide edge strengthening without damaging the chip flow. In order to achieve a stable and reliable cutting process, uniform chamfer geometry along the insert and high edge quality are necessary. For this, proper grinding strategies for chamfer manufacturing must be taken into account. With the objective of getting knowledge about the chamfer manufacturing process, strategies for grinding of chamfers are investigated in this paper. Chamfers were ground on PCBN, mixed ceramic and cemented carbide cutting inserts with a vitrified bond diamond grinding wheel. A single grain chip thickness model is used to characterize the process and different grinding strategies are analyzed in terms of reduction of chamfer geometry deviation. It was found that high insert rotational speeds increase the edge chipping and that the cutting insert material has a considerable influence on the chamfer geometry deviation.     

可转位面铣刀刀片槽设计的角度计算

将坐标变换用于可转位面铣刀的刀片槽设计,建立了铣刀切削角度、刀片角度以及刀片槽形成角度的数学关系,给出了刀片槽角度设计和制造的有效计算方法。     

A new method for the characterisation of rounded cutting edges

The influence of the cutting edge micro geometry on cutting process and on tool performance is subject of several research projects. Recently published papers focus on optimising the cutting edge rounding. The results are partly inconsistent. Unfortunately, no international standard yet exists to properly describe the cutting edge micro geometry. This is seen as the root cause for detected discrepancies. To develop a common understanding for the influence of rounded cutting edges, it is indispensable to use the same basis to characterise the edge profile. This paper gives a review on existing characterisation methods, analyses the difficulties in their application and discusses different modelling ideas to describe the cutting edge profile. Based hereon, a new algorithm and geometrical parameterisation of the cutting edge is proposed, which reduces uncertainties and difficulties in the application of currently available methods. The proposed method considers measurement uncertainties and is robust against form errors and creates thus the basis required for the study of the influence of rounded cutting edges.     

用原子力显微镜扫描测量金刚石刀具刃口半径

介绍了应用原子力显微镜（ＡＦＭ）扫描测量超精密加工用金刚石刀具刃口半径的方法,给出了测量图象和测量结果。该方法可提高金刚石刀具刃口半径的测量精度,对进一步分析刃口参数对超精密加工表面质量的影响具有一定指导意义。     

Influence of machine-tool dynamics on the tool wear

The influence of self-oscillation on the wear resistance of cutting tools is considered. A method is proposed for formulating a model of the shaping of the machined surface that takes account of the wear of the tool’s cutting edge, the machine-tool dynamics, the cutting conditions, and errors in manufacturing and assembling the machine-tool drives.     

Effects of Cutting Parameters on Tool Insert Wear in End Milling of Titanium Alloy Ti6A14V

Titanium alloy is a kind of typical hard-to-cut material due to its low thermal conductivity and high strength at elevated temperatures, this contributes to the fast tool wear in the milling of titanium alloys. The influence of cutting conditions on tool wear has been focused on the turning process, and their influence on tool wear in milling process as well as the influence of tool wear on cutting force coefficients has not been investigated comprehensively. To fully understand the tool wear behavior in milling process with inserts, the influence of cutting parameters on tool wear in the milling of titanium alloys Ti6Al4 V by using indexable cutters is investigated. The tool wear rate and trends under different feed per tooth, cutting speed, axial depth of cut and radial depth of cut are analyzed. The results show that the feed rate per tooth and the radial depth of cut have a large influence on tool wear in milling Ti6Al4 V with coated insert. To reduce tool wear, cutting parameters for coated inserts under experimental cutting conditions are set as: feed rate per tooth less than 0.07 mm, radial depth of cut less than 1.0 mm, and cutting speed sets between 60 and 150 m/min. Investigation on the relationship between tool wear and cutting force coefficients shows that tangential edge constant increases with tool wear and cutter edge chipping can lead to a great variety of tangential cutting force coefficient. The proposed research provides the basic data for evaluating the machinability of milling Ti6Al4 V alloy with coated inserts, and the recommend cutting parameters can be immediately applied in practical production.     

Effects of cutting parameters on tool insert wear in end milling of titanium alloy Ti6Al4V

Titanium alloy is a kind of typical hard-to-cut material due to its low thermal conductivity and high strength at elevated temperatures, this contributes to the fast tool wear in the milling of titanium alloys. The influence of cutting conditions on tool wear has been focused on the turning process, and their influence on tool wear in milling process as well as the influence of tool wear on cutting force coefficients has not been investigated comprehensively. To fully understand the tool wear behavior in milling process with inserts, the influence of cutting parameters on tool wear in the milling of titanium alloys Ti6Al4V by using indexable cutters is investigated. The tool wear rate and trends under different feed per tooth, cutting speed, axial depth of cut and radial depth of cut are analyzed. The results show that the feed rate per tooth and the radial depth of cut have a large influence on tool wear in milling Ti6Al4V with coated insert. To reduce tool wear, cutting parameters for coated inserts under experimental cutting conditions are set as: feed rate per tooth less than 0.07 mm, radial depth of cut less than 1.0 mm, and cutting speed sets between 60 and 150 m/min. Investigation on the relationship between tool wear and cutting force coefficients shows that tangential edge constant increases with tool wear and cutter edge chipping can lead to a great variety of tangential cutting force coefficient. The proposed research provides the basic data for evaluating the machinability of milling Ti6Al4V alloy with coated inserts, and the recommend cutting parameters can be immediately applied in practical production.