Rapid Generation of Surface Dimples Using End Milling

Kogusu, Shinichi; Ishimatsu, Takakazu; Ougiya, Yasuhiko

doi:10.20965/ijat.2007.p0045

Cited by 15 publications

(4 citation statements)

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“…Micro milling, as a removal process, is applied to fabrication of the surface structures. Micro dimples were machined with controlling the dimple shape and alignment in cutting with miniaturized ball end mills [12,13]. Micro dimples were also machined on the cylinder surfaces in terms of friction reduction [14].…”

Section: Introductionmentioning

confidence: 99%

Surface Texturing in Cutting with Micro-Scale Structured Tools

Uchiyama

Uchiyama²,

Kusumoto

et al. 2022

DDF

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Functional surfaces have been widely used for control of physical and/or chemical properties of substances on the surface. In the manufacturing industries, some of micro fabrication approaches such as laser processing have been applied to form textured surfaces, which control the surface functions with topographies. This study presents the surface texturing in cutting with micro-scale structured end mills. Micro-scale nicks are fabricated on the cutting edges of PCD (Poly-Crystalline Diamond) end mills in laser finishing. The cutting operation is conducted to form the chips on each nick with the cutter axis inclination in the feed direction. An analytical model is applied to control the surface structure for the spindle speed, the feed rate, the nick geometry and the inclination angle of the cutter axis. Then, the surface structures were fabricated in the actual cutting process. The machining operation in this study is available in fabrication of the micro-scale structures at high production rates and the structures shape can be controlled in the surface simulation.

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Section: Introductionmentioning

confidence: 99%

Surface Texturing in Cutting with Micro-Scale Structured Tools

Uchiyama

Uchiyama²,

Kusumoto

et al. 2022

DDF

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“…Wang et al formed the micro dimples mechanically in pellet-pressing and improved tribological properties [11]. Kogusu et al machined the micro dimples in milling [12]. However, they did not discuss the change in the surface functions with the surface topology.…”

Section: Introductionmentioning

confidence: 99%

Micro Dimple Milling for Structured Surface

Matsumura

Takahashi

Nagase

et al. 2014

AMR

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A micro dimple machining is presented to control the surface functions with the micro-scale structures on the solid surfaces. The micro dimples are machined in milling with the inclined ball end mill. When an inclined two flutes end mill removes the material in a depth of cut less than the tool radius, the air cutting time during neither edges contact with the workpiece appears in a rotation of cutter. When the tool is fed at a high feed rate so that the removal areas of an edge and another edge do not overlap each other, the concave dimples are machined. A mechanistic model is presented to control the shape and the size of the dimples to be machined. The micro dimples were machined to verify the mechanistic model in milling. The micro asperities were also formed in molding using the dimpled surface. As applications of the functional surfaces, wettability and friction coefficient were measured on the surfaces with the dimples and the asperities. The surface functions change with the alignments of the dimples and the asperities.

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“…Nikolai Kornev [4] Vortex structures and heat transfer enhancement mechanism in a turbulent flow over a staggered dimple array in a narrow channel have been investigated using Large Eddy Simulation (LES). Shinichi Kogusu et al [5] Heat transfer coefficients were measured in a channel with one side dimpled surface. The sphere type dimples were fabricated, and the diameter (D) and the depth of dimple was 16 mm and 4 mm, respectively.…”

Section: Introductionmentioning

confidence: 99%