Surface topography model with considering corner radius and diameter of ball-nose end miller
Surface topography model with considering corner radius and diameter of ball-nose end miller
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DOI：
10.1007/s00170-019-04897-3
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发表时间：
2020-01
期刊：
影响因子：
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通讯作者：
Jing Zhang;Song Zhang;Dongdong Jiang;Jiachang Wang;Shaolei Lu
中科院分区：
文献类型：
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作者：
Jing Zhang;Song Zhang;Dongdong Jiang;Jiachang Wang;Shaolei Lu
表面形貌作为影响表面完整性的重要因素之一，对加工零件的性能和使用寿命有很大的影响。本文主要研究了AISI P20钢球头端铣床的表面形貌模型。首先，建立了预测球头端铣削过程表面形貌和表面粗糙度的模型。其次，通过一系列铣削实验验证了所建立的表面形貌模型的准确性。第三，分析了球头端面铣床的圆角半径和直径对表面粗糙度的影响，发现获得最小表面粗糙度所需的每齿进给比（fz）与径向切削深度（ae）与圆角半径(r)之比(D)有关。最后，从最小表面粗糙度的角度，建立了考虑圆角半径和球头端铣床直径的数学模型。研究表明，考虑球头铣床的直径和半径角，合理选择切削参数（fzandae）是获得理想表面粗糙度的新途径。
Surface topography, as one of the significant roles in surface integrity, has a great impact on the performances and service life of the machined parts. This research focuses on the surface topography model for the ball-nose end miller in machining of AISI P20 steel. First, the model is developed to predict the surface topography and surface roughness in ball-nose end milling process. Secondly, the accuracy of the developed surface topography model was verified by a series of milling experiments. Thirdly, the effects of corner radius and diameter of ball-nose end miller on surface roughness is analyzed, it is observed that the ratio of feed per tooth (fz) to radial depth of cutting (ae) for obtaining minimum surface roughness is related to the ratio of diameter (D) to corner radius (r) of ball-nose end miller. Finally, in terms of the minimum surface roughness, a mathematical model is established with consideration of corner radius and diameter of ball-nose end miller. This research indicates that proper selection of cutting parameters (fzandae) with consideration of diameter and radius corner of ball-nose end miller is a novel avenue for acquiring desired surface roughness.