Ultrasonic deep hole drilling in electrolytic copper ECu 57

Heisel, Uwe; Wallaschek, Jörg; Eisseler, Rocco; Potthast, C.

doi:10.1016/j.cirp.2008.03.078

Cited by 43 publications

(14 citation statements)

References 3 publications

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“…The results of previous research work on the machining of other materials have shown that the required resultant forces and torques are reduced when ultrasound is applied [9,17,23]. This could also be confirmed for the machining of stone.…”

Section: Force and Torquesupporting

confidence: 59%

Ultrasonic-assisted machining of stone

Heisel

Eisseler

Eber

et al. 2011

Prod. Eng. Res. Devel.

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Hybrid machining processes represent a potential approach to meeting the constantly increasing demands on cutting. In ultrasonic-assisted cutting, as a part of hybrid machining, the machining process is superimposed with a high-frequency vibration of small amplitude. This paper presents investigations on the drilling of stone materials, i.e. different granites and marble, in which this process is applied. It could be observed that the resultant forces and torques were reduced, which had already been discovered in investigations of various other materials. The influence of different parameters on the force reduction is shown, which is basically similar to the theoretical reduction of friction by ultrasound for small speed ratios d, but is considerably increased. This increase must be due to other effects. Besides the force reduction, a reduction of cratering at the drill exit can be observed. Based on the present results, definite conclusions on tool wear cannot be drawn yet.

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Section: Force and Torquesupporting

confidence: 59%

Ultrasonic-assisted machining of stone

Heisel

Eisseler

Eber

et al. 2011

Prod. Eng. Res. Devel.

Self Cite

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“…Extensive practice in machining areas has proved that vibrational drilling compared to conventional drilling has obvious advantages [22][23][24][25][26]. Studies have shown that the pulse of high-frequency vibration has a significant effect in reducing bone cutting heat [27,28].…”

Section: Discussionmentioning

confidence: 99%

Experimental Investigations on Microcracks in Vibrational and Conventional Drilling of Cortical Bone

Wang

Cao

Zhao

et al. 2013

Journal of Nanomaterials

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Bone drilling is widely used in orthopedic surgery. Microcracks will be generated in bone drilling, which may cause fatigue damages and stress fractures. Fresh bovine cortical bones were drilled via vibrational and conventional ways. Drilling operations were performed by a dynamic material testing machine, which can provide the vibration while maintaining uniform feed motion. The drill site and bone debris were observed through scanning electron microscope (SEM). The experimental results showed that fewer and shorter micro-cracks were formed in vibrational drilling than those formed in conventional way. And the surface morphology of bone debris from two different drilling ways was also quite different. It is expected that vibrational drilling in orthopedic surgery operation could decrease the microdamage to the bone, which could lower the incidence of stress fracture and contribute to the postoperative recovery.

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“…An example for major reduction of the drilling torque to a quasi-static value is shown in Fig. 8.5 (left) for the vibration assisted deep hole drilling of electrolytic copper ECu57 (Heisel et al 2008). A virtually constant value can be reached independent of feed rate for no-load vibration amplitudes (A) in the range of about 5-10 µm.…”

Section: Reduction Of Process Forcementioning

confidence: 93%

Productivity Improvement Through the Application of Hybrid Processes

Lauwers

Klocke

Klink

et al. 2014

Lecture Notes in Production Engineering

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Many parts require high strength materials, exhibiting high temperatures or where formability should be reduced, requiring new processing technologies. The application of hybrid manufacturing processes can answer the needs. This paper gives first a classification of hybrid manufacturing processes, followed by a description of various productivity improvements. The latter is also demonstrated by various examples in cutting, grinding, forming and chemical & physical processes like EDM, ECM and laser.

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Ultrasonic deep hole drilling in electrolytic copper ECu 57

Cited by 43 publications

References 3 publications

Ultrasonic-assisted machining of stone

Ultrasonic-assisted machining of stone

Experimental Investigations on Microcracks in Vibrational and Conventional Drilling of Cortical Bone

Productivity Improvement Through the Application of Hybrid Processes

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