Burr formation in short hole drilling by ultrasonic assistance

Heisel, Uwe; Stehle, Thomas; Schaal, Michael; Eisseler, Rocco

doi:10.1007/s11740-013-0493-z

Cited by 6 publications

(6 citation statements)

References 6 publications

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“…The research of Chang and Bone [31] as well as Babitsky et al [32] confirmed burr reduction in aluminium alloys. In contrast, for UAD of C45E Heisel et al [33] could not verify a change of burr formation. He suspected the low vibration amplitude to be responsible.…”

Section: Introductionmentioning

confidence: 85%

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Kinematic analysis and process stability of ultrasonic-assisted drilling

Georgi

Rüger

Rentzsch

et al. 2021

Int J Adv Manuf Technol

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Regarding drilling, ultrasonic-assistance enables various potentials such as less tool wear, enhanced chip breaking and burr reduction. Although there are many technological studies verifying these advantages, no theory for process behaviour, design and parameter evaluation is available. Thus, this paper presents a kinematic analysis of the interaction between tool and workpiece to contribute to overall process understanding. Specific process scenarios are classified and characteristic parameters for the evaluation and design of ultrasonic-assisted drilling are determined. In addition, experimental investigations based on the developed process model are carried out analysing chip shape, bore surface and process stability acquired by acoustic measurements. The kinematic analysis shows the classification of ultrasonic-assisted drilling according to continuous and intermitted cutting conditions. In addition, the superposition of ultrasonic vibrations causes a modulation of uncut chip thickness related to the ratio of ultrasonic frequency and spindle speed. In general, experimental results show that ultrasonic-assisted drilling is leading to shorter chips. While using parameters for intermitted cutting conditions needle chips occur. At the same time, intermitted cutting conditions induce process instabilities identified using the acoustic measurement approach.

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Section: Introductionmentioning

confidence: 85%

“…While the research of Moghaddas et al [39] reached a thrust force reduction of approx. 42% for steel 1.6511, Heisel et al [33] measured increased thrust forces of up to 10 % for steel 1.1191. It is obvious that further reasons contribute to this widely spread values.…”

Section: Introductionmentioning

confidence: 96%

Kinematic analysis and process stability of ultrasonic-assisted drilling

Georgi

Rüger

Rentzsch

et al. 2021

Int J Adv Manuf Technol

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“…Ultrasonic-assisted drilling technology, an advanced method for precision machining, builds upon traditional drilling processes by incorporating high-frequency ultrasonic vibrations, creating a dynamic, intermittent contact mode between the tool and the workpiece [6]. The essence of this technology lies in utilizing vibrations within the ultrasonic frequency spectrum to meticulously modulate the mechanical and thermal environment during drilling.…”

Section: Mechanism Of Vibratory Drillingmentioning

confidence: 99%

Experimental Study and Application of Ultrasonic Vibration Technology in Enhancing Deep-Hole Drilling Tool Performance

Guo,

Cao

2024

AJST

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This study delves into the application of ultrasonic vibration technology in enhancing the performance of deep-hole drilling tools and its consequential effects on the machining process. By integrating ultrasonic vibrations, this research aims to unveil how such vibrations refine the interaction between the tool and material during deep-hole drilling, thereby achieving a reduction in frictional forces, a decrease in machining temperatures, an increase in the efficacy of cutting fluids, and an improvement in chip removal. The experimentation employed an array of tools, including internally cooled welding-style end-face cutters, multi-edged BTA, and single-edged BTA, to investigate the performance variations under different machining parameter configurations. The findings indicate that, compared to conventional drilling methods, ultrasonic vibration-assisted deep-hole drilling substantially elevates machining efficiency, enhances hole wall quality, and significantly reduces tool wear while prolonging tool life.

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“…The methods of forcing to chip broken include grinding chip-breaking groove and chip-curling step, changing tool geometry and adjusting cutting amount. [10][11][12] In the drilling difficult-to-machine materials, such as austenitic stainless steel 1Cr18Ni9Ti, precipitation hardening stainless steel 0Cr17Ni4Cu4Nb and titanium alloy TC4, breaking chip is very difficult. In the thick and tough spiral chips blockage often occurs.…”

Section: Analysis Of Removal Mechanism Of Materials In Drillingmentioning

confidence: 99%

Removal Mechanism of Titanium Alloy Material in Ultrasound Vibration Drilling

Wang

Liu

Qiu

et al. 2020

MSF

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In drilling the ultra-slim small diameter deep hole of titanium alloy, the problem of chip breaking and chip removal is common. When the drill is working normally, the ultrasonic vibration can be applied for the drill bit to cut the bit in the vibration to form a pulse. The cutting force waveform in drilling, should select the reasonable vibration frequency, amplitude, feed amount, workpiece rotation and other parameters to match, control the size and shape of the chip, get satisfactory chips, and avoid chip clogging. In this study, the ANSYS finite element simulation software was used to simulate the TC4 drilling process, and the difference between ultrasonic vibration drilling and ordinary drilling was analyzed. Drilling experiments were carried out. The experimental results show that compared with conventional drilling, ultrasonic vibration drilling has better surface quality, reduced tool wear and increased material removal rate.

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Burr formation in short hole drilling by ultrasonic assistance

Cited by 6 publications

References 6 publications

Kinematic analysis and process stability of ultrasonic-assisted drilling

Kinematic analysis and process stability of ultrasonic-assisted drilling

Experimental Study and Application of Ultrasonic Vibration Technology in Enhancing Deep-Hole Drilling Tool Performance

Removal Mechanism of Titanium Alloy Material in Ultrasound Vibration Drilling

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