Experimental research on micro hole drilling of polycrystalline Nd:YAG

Sequential micro machining (SMM) is a strategy of machining applied for micro-part manufacturing. Due to the finding of new sequential machining combinations, the authors have presented a novel combination of micro-ECDM (µECDM) drilling and micro-ECM (µECM) finishing for producing micro-holes in SS-304 stainless steel. An experimental setup was developed indigenously to conduct both machining processes at one station. The sequential processes were employed with desirable machining parameters, during their individual execution. The most desirable parameter like machining voltage, for hole drilling by µECDM was decided by studying hole taper angle, radial overcut, etc. The µECDM generates a recast layer, to overcome the adverse effects of µECDM, with the µECM finishing applied subsequently. The experimental results of SMM indicate a reduction in hole taper angle, improved circularity, and better surface quality. The change of phase of material due to sequencing of µECDM and µECM processes was analyzed by an XRD analysis of SS-304.

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Micro-hole drilling in thin films with cw low power lasers

Optical Materials Express ◽

10.1364/ome.1.000598 ◽

2011 ◽

Vol 1 (4) ◽

pp. 598 ◽

Cited By ~ 7

Author(s):

J.C. Ramirez-San-Juan ◽

J.P. Padilla-Martinez ◽

P. Zaca-Moran ◽

R. Ramos-Garcia

Keyword(s):

Thin Films ◽

Low Power ◽

Hole Drilling ◽

Micro Hole

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Research of Micro Hole Vibration Drilling Process and Experiment

Materials Science Forum ◽

10.4028/www.scientific.net/msf.697-698.161 ◽

2011 ◽

Vol 697-698 ◽

pp. 161-165 ◽

Cited By ~ 1

Author(s):

Peng Zhang ◽

Xing Yu Guo ◽

Cheng Ge Wu

Keyword(s):

Manufacturing Industry ◽

Defense Industry ◽

Hole Drilling ◽

Drilling Process ◽

Drilling Machine ◽

Micro Hole ◽

The Common ◽

Position Precision ◽

Vibration Drilling ◽

Hole Machining

It is always the difficulties for micro hole machining in the machine manufacturing industry, even more in the defense industry. The vibration drilling new craft, with the incomparable advantages in micro hole drilling, is different from the common one. The precision NC micro hole vibration drilling machine is developed, and the micro hole drilling experiments are conducted. The vibration drilling can not only improve the drill life more than ten times compared with the normal one, but also improve the centering ability and position precision.

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Vibration Drilling the 0Cr18Ni9Ti Stainless Steel Micro-Hole

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.217-219.1592 ◽

2012 ◽

Vol 217-219 ◽

pp. 1592-1595 ◽

Cited By ~ 1

Author(s):

Peng Zhang ◽

Chang Hong Mei ◽

Xing Yu Guo

Keyword(s):

Stainless Steel ◽

Hole Drilling ◽

Drilling Process ◽

Drill Bit ◽

Drilling Force ◽

Process Mechanism ◽

Micro Hole ◽

Vibration Drilling ◽

Hole Machining

Austenite 0Cr18Ni9Ti stainless steel is one of difficult-to-cut materials. It has poor dilling process, especially for micro-hole machining. The main reasons are the tiny drill, poor rigidity, easy to deviation. Moreover, the chip is difficult to discharge, so the drilling force is increased and the drill bit is easy to break, or even it is impossible for micro-hole drilling. In this paper, the vibration drilling process is adopted. The vibration drilling 0Cr18Ni9Ti stainless steel micro-hole process mechanism is researched. The stainless steel micro-hole drilling experiments are conducted. The results show that the vibration drilling can be a better solution for 0Cr18Ni9Ti stainless steel micro-hole processing.

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