Research of Micro Hole Vibration Drilling Process and Experiment

Zhang, Peng; Guo, Xing Yu; Wu, Chunli

doi:10.4028/www.scientific.net/msf.697-698.161

Cited by 5 publications

(2 citation statements)

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“…Especially, the demand of micro-hole structures is becoming more and more urgent in those elds. For example, a lot of micro through holes are needed in turbine blades of aero-engines to solve the heat dissipation problem [4][5][6]. Electro discharge machining (EDM) is a general method to fabricate micro-holes.…”

Section: Introductionmentioning

confidence: 99%

Study on the micro through holes machining using the electrochemical machining (ECM) method with a graphite electrode

Zhu

Hao

et al. 2022

Int J Adv Manuf Technol

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Electrochemical machining is widely used in biomedical, aerospace, automotive and other elds. The development of electrochemical machining (ECM) is restricted by many factors such as the di culty of preparing micro-electrode, large machined gap and serious stray corrosion. In this paper, we present a method to fabricate micro-holes by combining micro-graphite electrode with hollow structure. Firstly, a sealed graphite electrode was proposed to guarantee that the sediment can be fully removed by the owing electrolyte. Then, the effect of machined parameters such as the pulse frequency, machined voltage, electrode feeding speed and electrolyte concentration on machining quality were studied. By optimizing the machined parameters, the minimum value of micro-hole taper with 0.07 could be obtained.To improve the shape precision of workpiece, this paper designed the hollow structure inside the electrode. With the increasing of the pulse frequency, the machining accuracy of micro-holes increased.The results suggested that the pulse frequency of 100 KHz, the machined voltage of 18 V, the feeding speed of 1 µm/s and electrolyte concentration of 5% were more suitable for micro-holes machining with ECM.

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Section: Introductionmentioning

confidence: 99%

Study on the micro through holes machining using the electrochemical machining (ECM) method with a graphite electrode

Zhu

Hao

et al. 2022

Int J Adv Manuf Technol

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“…But its high plasticity, high toughness, small thermal conductivity, high cutting temperature and good cohesiveness result in bad machinability, the shorten life of cutters [1] . Micro-hole machining, although many global experts have done a large amount of experiments and researches for this machining of stainless steel material, is still a big difficulty in holes machining [2,3] . Based on the structure and operating principle of drilling template, Peifei Yang has concluded some experience of tolerance matching and selection in tiny bite's guide sleeve, deduced some critical influencing factors of tolerance matching and selection by optimized calculation [4] .…”

Section: Introductionmentioning

confidence: 99%

Study on the Stainless Steel 1Cr18Ni9Ti Micro-Hole Drilling Experiment

Li¹,

Zhi²,

Wang³

et al. 2014

AMM

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Stainless steel is difficult to machine, especially micro-hole machining. In order to obtain the effect of drilling force by tool material and cutting parameters, the drilling experiments on stainless steel 1Cr18Ni9Ti have been done by diameter of 1.2 mm containing cobalt high speed steel and carbide drill. According to the experimental results, analysising the reason of drilling force change under different parameters and establishing a carbide drill drilling force empirical formula which combined with the regression analysis method.

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