Mechanism of chip formation in ultrasonic vibration drilling and experimental research

Chen, Shuo; Zou, Ping; Wu, Hao; Kang, Di; Wang, Wenjie

doi:10.1177/0954406219848464

Cited by 16 publications

(5 citation statements)

References 32 publications

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“…Hence, at C1 level, the highest R a is observed that is at 500 RPM. Chen et al [32] also reported that ultrasonic vibration drilling produced a thin and smooth chips while machining of stainless steel.…”

Section: Effects Of Process Parametersmentioning

confidence: 98%

Effect of surface topography on pull-out strength of cortical screw after ultrasonic bone drilling: an in vitro study

Agarwal

Jain

Gupta

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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Drilling of bone is required to repair and align the bone when faced with a major fracture. The screw and implant are used for fixing the fractured part of the bone. The failure of osteosynthesis is due to strength between the bone and screw, which majorly depends upon the pull-out strength of the cortical screw. Pull-out strength is the force required to pull a screw out of its foundation from the bone. After the fixation of cortical screws, the major forces acting on the fixation of the screw and the implanted device in the bone. Therefore, it needs to make sure that the screw must fit into the place and grasp the bone within the drilled hole. The intended focus of this research is to see the effect of surface roughness induced during the bone drilling operation on pull-out strength with rotary ultrasonic bone drilling (RUBD) and standard conventional bone drilling (CBD). This is observed that a drilled hole in a bone exhibits greater pull-out strength with more surface roughness because more anchoring is provided by the roughened surface. Also, the apatite formation of the bone shows the biocompatible nature of porcine bone in the simulated body fluid (SBF) solution. RUBD using different grit size in a hollow drilling burr resulted that coarse abrasive have maximum effort for higher surface roughness. Furthermore, the higher surface texture provides a better bone growth rate as it provides peaks for branching and nucleation when preserved in SBF. RUBD provides precise cutting to the bone as compared to CBD. On the 28th day of the bone-screw samples to be immersed in SBF results 42.82% higher pull-out strength of screw in case of RUBD as compared to CBD.

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Section: Effects Of Process Parametersmentioning

confidence: 98%

Effect of surface topography on pull-out strength of cortical screw after ultrasonic bone drilling: an in vitro study

Agarwal

Jain

Gupta

et al. 2020

J Braz. Soc. Mech. Sci. Eng.

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“…The authors presented an analysis of the effects of ultrasonic assisted turning (UAT) on the surface roughness of a wide range of metals and alloys, from copper, aluminum and stainless steels to Ni and Ti based alloys. Results showed that Hybrid Turning Technology UATyields significant improvements in surface roughness for all alloys studied, primarily due to the inherent reduction in cutting forces S.Chen et al [8] performed Ultrasonic assisted vibration drilling to improve the surface finish for drilled holes Surface Roughness is the measure of the quality of a surface being smooth or not. The reduced forces and friction contribute to lower heat generation, which is known to negatively affect surface quality.…”

Section: Introductionmentioning

confidence: 99%

Improvement of drilled holes quality by voice-activated ultrasonic vibration assisted drilling process of different orientation

Patwari,

Navid,

Morshed

et al. 2024

J. Phys.: Conf. Ser.

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Ultrasonic drilling enables drilling in difficult-to-machine materials, including ceramics and composites, with greater accuracy and precision. The localized and controlled energy application of ultrasonic frequency minimizes the risk of material fracture, cracks, or delamination. This capability ensures that the drilled hole maintains its intended dimensions, shape, and integrity, resulting in improved hole accuracy and overall drilled hole condition. Ultrasonic drilling is an advanced machining technique that utilizes high-frequency vibrations to improve the drilling process. In this designed voice-activated module, electrical energy has been converted into mechanical vibrations through piezoelectric transducers, generating ultrasonic waves in the range of 20 kHz to 80 kHz. Experiments has been conducted considering different process parameters with the changing different orientations of the emitters-horizontal and vertical positions and comparison was done with no vibration conditions. It has been observed that with the application ultrasonic vibration frequency the surface roughness improved by 45% in horizontal position, 28% in vertical position compared with no vibration conditions-conventional techniques. It has also been observed that the circularity index of the drilled holes also improved by 31% for horizontal and 7.6% for vertical position.

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“…However, the drill bit is in a semi-closed state during the drilling process, which makes chip removal very difficult and prone to chip clogging. In addition, when the drill rotates fast, the machining gap is small, and the machining depth is large, the cooling medium does not easily enter the machining area, and it is difficult to cool and lubricate the drill, which increases the temperature of the drilling area and causes serious wear of drill, resulting in poor machining accuracy and easy damage to drill [ 11 , 12 , 13 ]. For hospital stainless steel, titanium alloy, and/or high hardness materials below 0.5 high-precision, small-hole machining is limited by drill strength, tool diameter, table drill speed requirements and/or conditions, and no effective drilling machining means to achieve rapid machining of micro-hole.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research of High-Quality Drilling Based on Ultrasonic Vibration-Assisted Machining

Deng

Lu³

2023

Micromachines

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Micro-hole is widely used in various fields, and common machining methods of micro-hole in factories are drilling and electrical discharge machining (EDM), but because of low machining efficiency, these methods cannot meet requirements. Therefore, it is urgent to investigate a high efficient micro-hole machining technology to meet the demands of micro-hole machining in factory. Over past few decades, ultrasonic machining technology has developed rapidly and achieved good results in solving many critical machining problems in field of difficult-to-cut materials. Therefore, this paper builds an ultrasonic vibration-assisted drilling (UAD) experiments platform to combine micro-fine small hole drilling with ultrasonic machining technology for micro-hole multi-factor experimental research. Results show that UAD machining of micro-hole below diameter 0.5 mm is comparable to conventional drilling machining because of its high-frequency pulse intermittent cutting process, stable change in machining diameter, good stability of parameters such as shape tolerance roundness and cylindricity, small cutting force during cutting, small tool wear, and small surface roughness of inner wall of micro-hole. Compared with EDM, UAD has high efficiency and good stability of parameters such as diameter and roundness of shape tolerance. Comprehensive analysis of UAD can be used as an alternative technology solution for machining small holes in non-special requirements of metal materials in factory and has technical feasibility of stable batch production.

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Mechanism of chip formation in ultrasonic vibration drilling and experimental research

Cited by 16 publications

References 32 publications

Effect of surface topography on pull-out strength of cortical screw after ultrasonic bone drilling: an in vitro study

Effect of surface topography on pull-out strength of cortical screw after ultrasonic bone drilling: an in vitro study

Improvement of drilled holes quality by voice-activated ultrasonic vibration assisted drilling process of different orientation

Experimental Research of High-Quality Drilling Based on Ultrasonic Vibration-Assisted Machining

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