Built-up edge investigation in vibration drilling of Al2024-T6

Barani, A.; Amini, Saeid; Paktinat, Hossein; Tehrani, Alireza Fadaei

doi:10.1016/j.ultras.2014.01.003

Cited by 67 publications

(30 citation statements)

References 21 publications

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“…Kato and Takeyama [22] stated machining force and chips size will be decreased in ultrasonic assisted drilling comparing to conventional drilling. This phenomenon was also confirmed by Barani et al [23]. By reducing the force, formation of the built-up edge can also be reduced.…”

Section: Introductionsupporting

confidence: 68%

Investigation on rotary ultrasonic assisted end grinding of silicon nitride ceramics

Baraheni

Amini

2019

SN Appl. Sci.

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In this study, rotary ultrasonic assisted end grinding (RUAEG) of silicon nitride (Si 3 N 4) was discussed. In addition, comparison of RUAEG with conventional end grinding was carried out. Machining parameters effect on the process was experimentally and statistically distinguished. Moreover, interaction of the influential parameters was discussed and the optimum condition was obtained. It is concluded from interaction plots that ultrasonic vibration influence on surface roughness was greater in lower cutting depths and higher rotational speeds. Moreover, by RUAEG process, it could acquire higher material removal speed with lower thrust force. Exerting ultrasonic vibration on the tool was more influential comparing to other grinding parameters. From morphological examinations, that was concluded RUAEG of ceramics results in lower amount of scratches, diminishing grinding lines and smoothing the surface due to be knocked continuously by the tool.

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Section: Introductionsupporting

confidence: 68%

Investigation on rotary ultrasonic assisted end grinding of silicon nitride ceramics

Baraheni

Amini

2019

SN Appl. Sci.

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“…Pujana et al [20] analyzed the UAD of Ti6Al4V, but applied vibration to the workpiece rather than applying it to the drill bit. Barani et al [25] studied the effect of longitudinal vibration on the drilling of Al2024T6. They obtained a better machined surface than the CD due to the lower surfacing edge of the UAD.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of different tool geometries in the finite element simulation of ultrasonic-assisted drilling of Ti6A14V

Wang

2020

J Braz. Soc. Mech. Sci. Eng.

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This paper attempts to analyze the effect of various drilling parameters such as feed rate, spindle speed and vibration frequency on performance characteristics such as thrust force, effective stresses, temperature and chip morphology in conventional drilling (CD) and ultrasonic-assisted drilling (UAD) of Ti6A14V using three different point angle (140°, 120°, 90°) drill bits in order to optimize the chip breakability of Ti6A14V. The three different point angle drill bits are utilized to establish the finite element models (FEM) to simulate the drilling process with Lagrangian approach in DEFORM-3D software. The simulations are validated by the experimental findings and analytical data of thrust forces, and the percent errors in results range approximately between 3 and 7%. The results obtained prove that UAD can produce segmental discontinuous chip, lower thrust force, lower process temperature and lower effective stress. The point angle of 120° drill achieved the thinnest chip thickness and the excellent effects of chip breaking. The achieved results are assumed to help for the optimization of the drill tool geometries, drilling parameters and chip breakability.

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“…The new model provides an ability to highlight the effectiveness of a modern technique, which is well known as ultrasonic assisted drilling (UAD). Compared to conventional drilling (CD), UAD has been proved to provide a significant reduction of thrust force [19][20][21][22][23], improvements in built-up edge [19,24], burr size [19,25], tool life, and hole oversize (Amini et al, 2013). A significant reduction of drilling torque of 50%, when applying UAD for aluminum, has been found in the study of Neugebauer and Stoll [26].…”

Section: Introductionmentioning

confidence: 99%

A New Approach to Modelling the Drilling Torque in Conventional and Ultrasonic Assisted Deep-Hole Drilling Processes

Chu

Nguyen²,

Ngo

et al. 2018

Applied Sciences

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This paper presents a new approach to developing the torque model in deep hole drilling, both for conventional and ultrasonic assisted drilling processes. The model was proposed as a sum of three components: the cutting, the chip evacuation and the stick-slip torques. Parameters of the new model were carried out by applying the regression analysis technique, with the correlation values higher than 0.999. The data were collected from 36 experimental dry drilling tests, both in conventional and ultrasonic assisted cutting conditions, with the depth-to-diameter of the drilled holes of 7.5. The major advantage of the new model compared to previous models is that the new model of chip-evacuation torque has only one coefficient, thus making it easier to evaluate and compare different deep-drilling processes. The effectiveness of ultrasonic assistance in deep hole drilling was also highlighted using the proposed model. The new model is promising to predict critical depth and torque in deep hole drilling.

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Built-up edge investigation in vibration drilling of Al2024-T6

Cited by 67 publications

References 21 publications

Investigation on rotary ultrasonic assisted end grinding of silicon nitride ceramics

Investigation on rotary ultrasonic assisted end grinding of silicon nitride ceramics

Evaluation of different tool geometries in the finite element simulation of ultrasonic-assisted drilling of Ti6A14V

A New Approach to Modelling the Drilling Torque in Conventional and Ultrasonic Assisted Deep-Hole Drilling Processes

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