Development of a New Burnishing Method Utilizing a Flank Face of a Turning Tool and its Burnishing Performance
Development of a New Burnishing Method Utilizing a Flank Face of a Turning Tool and its Burnishing Performance
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车刀后刀面滚光新方法的研制及其滚光性能
DOI：
10.4028/www.scientific.net/amr.1136.227
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Kiyoshi Suzuki
中科院分区：
文献类型：
--
作者：
M. Iwai;H. Hashimoto;Kiyoshi Suzuki
为了在数控车床上方便地进行抛光加工，作者提出了一种新的方法，即在刀具刀尖切削刃下方几毫米处设置后刀面。实验中，给定一定的抛光深度（t=1，2，4μm/道次），对φ 30 mm的碳钢工件（S45 C）以V= 200 m/min，f=0.15mm/rev的速度进行预定次数的抛光。结果表明，表面粗糙度的改善程度与抛光深度成正比，车削后的粗糙度值由Rz <$10 μm提高到Rz <$2.5 μm。利用数控车床的微米级精度的进给控制，还尝试将工件直径的尺寸精度控制在微米级。结果表明，工件半径随抛光深度（t=1μm/道次）的增加而减小0.6~0.8倍，表明采用固定抛光深度的抛光系统可以控制工件直径的尺寸精度。采用相同的抛光工艺，工件的圆度Δr可由车削后测得的Δr ≤ 4μm提高到Δr ≤ 2μm。
As a measure to perform a burnishing process easily on an NC lathe, the authors propose a new method using a flank face positioned in a few millimeters lower part of the nose cutting edge of a tool. In the experiment, giving a fixed depth of burnishing (t=1, 2 and 4μm/pass), the carbon steel workpiece (S45C) of φ30mm which had been turned at V=200m/min and f=0.15mm/rev was burnished by predefined number of times. As a result, the surface roughness improved in nearly proportion to the total depth of burnishing and the roughness value of Rz≈10μm measured after turning could be improved to Rz≈2.5μm. Utilizing the feed control with an accuracy level of micron meters of the NC lathe, an attempt to control the dimensional accuracy of the workpiece diameter in the order of micron meters was also made. As a result, the workpiece radius came down constantly by 0.6~0.8 times in proportion to the tool depth of burnishing (t=1μm/pass), which reveals that the dimensional accuracy of the workpiece diameter could be controlled by the proposed burnishing process utilizing a fixed depth of burnishing system. Using the same burnishing process, circularity of the workpiece Δr could be improved to Δr≈2μm from Δr≈4μm measured after turning.