High speed machining of moulds and dies for net shape manufacture
High speed machining of moulds and dies for net shape manufacture
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DOI：
10.1016/s0261-3069(99)00092-8
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发表时间：
2000-08
影响因子：
8.4
通讯作者：
J. Urbanski;P. Koshy;R. Dewes;D. Aspinwall
中科院分区：
文献类型：
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作者：
J. Urbanski;P. Koshy;R. Dewes;D. Aspinwall
高速加工（HSM）一般是指高转速（10000-100000转/分钟）的端铣或球头端铣。本文首先回顾了高速切削加工在淬火模具制造中的发展和应用。接下来，详细介绍了使用可转位刀片球头立铣刀加工硬化 (∼52 HRC) AISI H13 热作工具钢的实验工作。提供刀具磨损、工件表面粗糙度和切削力数据。使用包含重复测试的全析因实验研究了刀具材料（TiCN 和 TiAlCrYN 涂层硬质合金和无涂层金属陶瓷）和切削速度 (150–350 m/min) 的影响。还提供了整体硬质合金刀具的有限性能数据。与同等整体硬质合金相比，使用可转位刀片刀具通常会导致刀具寿命值较低（以 250 m/min 的切削速度切削约 50% 的长度）。使用 TiCN 涂层刀片和 TiAlN 涂层整体硬质合金刀具获得了最高的刀具寿命值。工件表面粗糙度通常为 1–4 μm Ra，刀片铣刀的值略低。由于轴向切削深度相对较大 (1 mm)、负前角 (−10°) 和钝刀片条件，可转位刀具的切削力相对较高（高达 ∼1300 N）。
High speed machining (HSM) generally refers to end milling or ball nose end milling at high rotational speeds (10000–100000 rev./min). The paper initially reviews the development and application of HSM for the manufacture of hardened moulds and dies. Following on from this, experimental work is detailed relating to the use of indexable insert ball nose end mills to machine hardened (∼52 HRC) AISI H13 hot work tool steel. Tool wear, workpiece surface roughness and cutting force data are presented. The effects of tool material (TiCN and TiAlCrYN coated carbide and uncoated cermet) and cutting speed (150–350 m/min) were investigated using a full factorial experiment incorporating test replications. Limited performance data for solid carbide tooling are also presented. The use of indexable insert cutters, generally resulted in lower tool life values (approx. 50% length cut at a cutting speed of 250 m/min) compared to equivalent solid carbide. The highest tool life values were obtained with TiCN coated inserts and TiAlN coated solid carbide cutters. Workpiece surface roughness was typically 1–4 μm Ra, with slightly lower values for insert cutters. Cutting forces were relatively high (up to ∼1300 N) with the indexable cutters, as a result of a relatively large axial depth of cut (1 mm), a negative rake angle (−10°) and a blunt insert edge condition.