Micro-EDM of micro-stepped hole in YG8 cemented carbide by using micro milling cutter

Xu, Bin; Tao, Feng; Xiao, Yong-chang; Wu, Xiao-yu; Fu, Lianyu; Zhao, Hang; Lei, Jianguo; Zhao, Chunyang

doi:10.1007/s00170-022-09268-z

Cited by 6 publications

(3 citation statements)

References 14 publications

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“…They observed that (i) peak current and pulse on-time are a significant influence on surface roughness; (ii) pulse-on-time is a significant parameter for radial overcut; (iii) the best microhole profile can be achieved at 4 A peak current, 40 µs pulse on-time, and 300 rpm TRS; and (iv) sticking eroded particles are observed at the top and the bottom of sidewalls. Xu et al [65] fabricated stepped micro-holes on YG8 cemented carbide by µ-SED using a micro milling cutter as a tool electrode of 400 µm diameter. They concluded that the best quality of stepped micro-holes can be achieved at 2000 RPM rotational speed, 90 V drilling voltage, and 0.5 duty ratio.…”

Section: Review Of Previous Research Work On Drilling Deep Fine Holes...mentioning

confidence: 99%

Developing Meso and Microholes by Spark-Erosion Based Drilling Processes: A Critical Review

Chaubey

Gupta

2022

Micromachines

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The increased demand for miniature components has drawn the attention of researchers, engineers, and industry users to manufacture precision micro and mesoholes on foils, sheets, and plates made from a variety of engineering materials. These days, micro-drilling is extensively being adopted as a fundamental operation in all kinds of smart manufacturing industries to make different types of microholes, such as through holes, blind holes, and taper holes on micro-parts and components. Drilled holes with a diameter of less than 1 mm are referred to as microholes, while drilled holes whose diameter ranges between 1 and 10 mm are known as mesoholes. Meso and microholes are commonly referred to as fine-holes. Modern or advanced drilling processes are mostly used to drill microholes from a variety of materials. This paper presents an extensive review of the previous research conducted on the drilling of fine holes (meso and micro size) by spark- erosion-based processes along with highlighting work and tool electrode materials, specifications of drilled holes, types of microholes (through or blind holes), process parameters, performance measures, and key findings. The paper aims to facilitate researchers and scholars by highlighting the capabilities of spark erosion machining, drilling, and its variants to fabricate miniature holes. The paper ends with a conclusion and future research directions to encourage further work in this area.

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Section: Review Of Previous Research Work On Drilling Deep Fine Holes...mentioning

confidence: 99%

Developing Meso and Microholes by Spark-Erosion Based Drilling Processes: A Critical Review

Chaubey

Gupta

2022

Micromachines

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“…As an important component of an aerospace engine core equipment cutting tool, the excellent mechanical properties and performance of cemented carbide (YG8) is an important factor in ensuring the cutting performance of the tool [ 1 , 2 ]. However, due to the complex working environment, turbine discs are subjected to high temperature, high pressure, high centrifugal force and other combined effects of alternating loads for a long time; the cutting tool should have the reliability necessary for long-term service to ensure stable machining accuracy [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

Study of the Friction Behavior of Embedded Fibers in YG8 Surface Grooves

Huang

Zhang

et al. 2023

Materials

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YG8 is a common cemented carbide material with excellent mechanical properties and mechanical properties, so it is widely used in the actual industry. However, due to the active chemical properties and strong affinity of tungsten alloy steel, it is easy to produce bonding and peeling in application, resulting in an unstable process and short service life. In order to control and reduce the surface wear of YG8 cemented carbide, groove-textured surface (GS) and flocking surface (FS) were prepared on smooth surface (SS). The friction characteristics of the samples were studied under different applied load conditions. The results show that the average friction coefficient of SS, GS and FS is inversely proportional to the load in dry/oil environment. Compared with SS, FS exhibits the lowest friction coefficient, which is reduced by 30.78% (dry friction) and 13.13% (oil lubrication). FS effectively improves the tooth jump phenomenon of the sample and the amplitude of the friction coefficient, friction force and load, and has the best anti-friction characteristics. At the same time, the FS with the fastest contact angle drop at any time also showed excellent wetting ability, and the wear rate decreased by an order of magnitude. The implantation of fibers in the groove inhibits the spalling and furrow of wear track, which is attributed to the effect of fibers on damage repair. In the friction process, FS increases the content of the O element and induces the formation of oxides. The friction mechanism is mainly chemical wear. The excellent tribological properties of FS have a good guiding significance and theoretical support for improving the tribological properties of high hardness material surfaces.

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“…Unfortunately, it is impractical to drill the hole with large diameter [1] . Electrical discharge machining has no macroscopic cutting force, and it is not limited by material hardness, therefore, electrical discharge becomes one of the mainstream technologies for machining super-hard materials [2] . Compared with milling, electrical discharge machining is less efficient and less safe for its unreasonable discharge voltage and current may cause fire [3] .…”

Section: Introductionmentioning

confidence: 99%

An optimization method of trochoidal radius for trochoidal milling hole based on the adaptive feed rate scheduling

Han,

Gu,

et al. 2023

Int J Adv Manuf Technol

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The machining time is mainly related to the tool path and the corresponding feed speed, while the trochoidal tool path depends on the trochoidal step and trochoidal radius. The material removal rate is periodically distributed along the tool path in trochoidal milling a hole. But more than half of tool paths do not cut material in trochoidal milling a hole, so a constant feed speed in milling a hole will limit the machining efficiency. In this paper, a trochoidal radius optimization approach is presented to improve the efficiency of trochoidal milling a hole, which considering the optimal feed speed. Firstly, the mathematical representation of the trochoidal radius is formulated by analyzing the generation principle of trochoidal path, so the trochoidal radius could be determined under the premise of the hole diameter, maximum uncut radial material and the tool diameter are fixed. Furthermore, the trochoidal radius optimization model， which based on the adjusted feed speed, is established with the goal of minimizing the machining time. Secondly, an adaptive feed speed scheduling strategy for trochoidal milling is proposed, which is constrained by stable material removal rate and adjusted by a cubic polynomial algorithm. Finally, taking a hole machining as an example, simulation and experimental results show that the efficiency of applying the trochoid milling method proposed has increased by 13.8% compared to traditional helix milling method.

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Micro-EDM of micro-stepped hole in YG8 cemented carbide by using micro milling cutter

Cited by 6 publications

References 14 publications

Developing Meso and Microholes by Spark-Erosion Based Drilling Processes: A Critical Review

Developing Meso and Microholes by Spark-Erosion Based Drilling Processes: A Critical Review

Study of the Friction Behavior of Embedded Fibers in YG8 Surface Grooves

An optimization method of trochoidal radius for trochoidal milling hole based on the adaptive feed rate scheduling

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