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首页> 外文会议>ASME international mechanical engineering congress and exposition >Cutting Forces with 3-D Tool Wear Analysis in Orthogonal Tube Machining of 6061-T6 Aluminum Alloy with Uncoated Carbide Tool Inserts using Cold Compressed Air versus Liquid Nitrogen as Metal Working Fluids
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Cutting Forces with 3-D Tool Wear Analysis in Orthogonal Tube Machining of 6061-T6 Aluminum Alloy with Uncoated Carbide Tool Inserts using Cold Compressed Air versus Liquid Nitrogen as Metal Working Fluids

机译：使用冷压缩空气与液氮作为金属加工液对未经涂层的硬质合金刀具刀片的6061-T6铝合金的正交管加工中的3-D刀具磨损分析进行切削力分析

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Metal working fluids remain in common use throughout many industries where metal cutting is necessary. Optimizing the use of a metal working fluid must balance environmental needs, production needs and economic needs. An orthogonal tube turning machining experiment on 6061-T6 aluminum alloy was conducted to study the performance of uncoated carbide tool inserts utilizing cold compressed air and liquid nitrogen environments as the metal working fluid of choice. The tool inserts selected for this study did not have any chip breaker and studied at 3 different rake angles of 0°, 7° and 15°. Aluminum alloy 6061-T6 was used because of its commercially dominant availability and usage. Cold cryogenic cooling was selected because of its growing usage in high performance machining applications. The use of cold compressed air has been much less studied in the machining of metals than in the machining of plastics and composites where it is quite commonly used. The comparisons between these two methods represent the first published values comparing the current extremes of gaseous metal working fluid applications in a commercially dominant aluminum alloy. This statistically designed experiment produced a large amount of comparative data that focused on the wear of the tools in two different cutting environments allowing for multivariate analysis of variance and regressive curve fitting. The orthogonal tube turning was set up on a conventional two axis HAAS TL-2 CNC tool room lathe. Forces were collected utilizing a standard Kistler force dynamometer to record the force data in X, Y and Z axes. Two levels of uncut chip thickness, 0.002" and 0.004" per revolution were maintained with a constant feed and depth of cut of 0.125". Tool rake angles and depth of cuts were selected to ensure maximum statistical power / decisiveness of the experiment. The experiment was carried out for duration of 1 minute while the force data was collected for the entire duration of cut. New tool insert was used for each factor level combination. The traditional force analysis results are provided for an orthogonal tube turning experiment. In addition, all tools were analyzed for 3- dimensional rake face wear using an innovative Keyence white light microscope in conjunction with a Dektak surface profilometer. Although cutting forces were statistically the same, the inexpensive, simple cold compressed air produced less rake wear than the more expensive liquid nitrogen for all cutting factor level combinations. There was no measureable benefit in using the more expensive liquid nitrogen system.
机译：在需要金属切削的许多行业中，金属加工液仍然是通用的。优化使用金属加工液必须平衡环境需求，生产需求和经济需求。进行了6061-T6铝合金的正交管车削加工实验，以研究使用冷压缩空气和液氮环境作为选择的金属加工液的无涂层硬质合金刀具刀片的性能。本研究中选择的刀具刀片没有断屑槽，并且以0°，7°和15°的3种前角进行了研究。之所以使用铝合金6061-T6，是因为其在商业上占主导地位。选择低温低温冷却是因为其在高性能加工应用中的使用越来越多。在金属加工中，冷压缩空气的使用比在塑料和复合材料加工中被广泛使用的研究少得多。这两种方法之间的比较代表了首次公开发表的值，该值比较了在商业上占优势的铝合金中的气态金属加工液应用的当前极限值。这个经过统计学设计的实验产生了大量的对比数据，这些数据着重于两种不同切削环境下刀具的磨损情况，从而可以进行方差的多变量分析和回归曲线拟合。正交管车削是在常规的两轴HAAS TL-2 CNC工具室车床上进行的。使用标准的奇石乐测力计收集力，以记录X，Y和Z轴上的力数据。在恒定进给和0.125“切削深度的情况下，每转可保持两个水平的未切削切屑厚度，分别为0.002”和0.004“。选择刀前角和切削深度可确保最大的统计功效/实验的决定性。在整个切割过程中收集力数据的过程中，进行了1分钟的持续时间，每个因子水平组合使用了新的工具镶块，并为正交管车削实验提供了传统的力分析结果。使用创新的Keyence白光显微镜和Dektak表面轮廓仪对工具进行3维前刀面磨损分析，尽管切削力在统计学上是相同的，但廉价，简单的冷压缩空气比更昂贵的液氮产生的前刀面磨损更少对于所有的切削因子水平组合，使用更昂贵的液氮系统都无法获得可观的收益。

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