Material removal rate prediction for ultrasonic drilling of hard materials using an impact oscillator approach
Identifieur interne : 002179 ( Istex/Corpus ); précédent : 002178; suivant : 002180Material removal rate prediction for ultrasonic drilling of hard materials using an impact oscillator approach
Auteurs : M. Wiercigroch ; R. D. Neilson ; M. A. PlayerSource :
- Physics Letters A [ 0375-9601 ] ; 1999.
English descriptors
- Teeft :
- Average value, Brittle materials, Elsevier science, Experimental studies, Glass plate, Hertzian theory, Higher values, Impact force, Machining, Main mechanism, Material removal rate, Nonlinear dynamics, Physics letters, Static force, Static load, Time history, Transducer assembly, Ultrasonic drilling, Ultrasonic horn, Ultrasonic machining, Vertical drive, Wiercigroch, Workpiece.
Abstract
Abstract: It is postulated that the main mechanism of the enhancement of material removal rate (MRR) in ultrasonic machining is associated with high amplitudes forces generated by impacts, which act on the workpiece and help to develop micro-cracking in the cutting zone. The inherent non-linearity of the discontinuous impact process is modelled, to generate the pattern of the impact forces. A novel procedure for calculating the MRR is proposed, which for the first time explains the experimentally observed fall in MRR at higher static forces.
Url:
DOI: 10.1016/S0375-9601(99)00416-8
Links to Exploration step
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<front><div type="abstract" xml:lang="en">Abstract: It is postulated that the main mechanism of the enhancement of material removal rate (MRR) in ultrasonic machining is associated with high amplitudes forces generated by impacts, which act on the workpiece and help to develop micro-cracking in the cutting zone. The inherent non-linearity of the discontinuous impact process is modelled, to generate the pattern of the impact forces. A novel procedure for calculating the MRR is proposed, which for the first time explains the experimentally observed fall in MRR at higher static forces.</div>
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<note type="content">Fig. 1: Schematic of rotary ultrasonic machining. 1 - piezo-electric element, 2 - transducer assembly, 3 - coupler, 4 - diamond impregnated/coated tool, 5 - workpiece, 6 - fixture, 7 - pump, 8 - tank, 9 - coolant jet.</note>
<note type="content">Fig. 2: A dynamic model of rotary ultrasonic drilling.</note>
<note type="content">Fig. 3: Time history of (a) the tool displacement and (b) the impact force.</note>
<note type="content">Fig. 4: Influence of the static hydraulic force fHYD on the time history of the impacting force for (a) fHYD=0.1, (b) fHYD=0.4 and (c) fHYD=0.8.</note>
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<abstract xml:lang="en"><p>Abstract: It is postulated that the main mechanism of the enhancement of material removal rate (MRR) in ultrasonic machining is associated with high amplitudes forces generated by impacts, which act on the workpiece and help to develop micro-cracking in the cutting zone. The inherent non-linearity of the discontinuous impact process is modelled, to generate the pattern of the impact forces. A novel procedure for calculating the MRR is proposed, which for the first time explains the experimentally observed fall in MRR at higher static forces.</p>
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<ce:abstract-sec><ce:simple-para>It is postulated that the main mechanism of the enhancement of material removal rate (MRR) in ultrasonic machining is associated with high amplitudes forces generated by impacts, which act on the workpiece and help to develop micro-cracking in the cutting zone. The inherent non-linearity of the discontinuous impact process is modelled, to generate the pattern of the impact forces. A novel procedure for calculating the MRR is proposed, which for the first time explains the experimentally observed fall in MRR at higher static forces.</ce:simple-para>
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<originInfo><publisher>ELSEVIER</publisher>
<dateIssued encoding="w3cdtf">1999</dateIssued>
<dateModified encoding="w3cdtf">1999-02-11</dateModified>
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<language><languageTerm type="code" authority="iso639-2b">eng</languageTerm>
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<abstract lang="en">Abstract: It is postulated that the main mechanism of the enhancement of material removal rate (MRR) in ultrasonic machining is associated with high amplitudes forces generated by impacts, which act on the workpiece and help to develop micro-cracking in the cutting zone. The inherent non-linearity of the discontinuous impact process is modelled, to generate the pattern of the impact forces. A novel procedure for calculating the MRR is proposed, which for the first time explains the experimentally observed fall in MRR at higher static forces.</abstract>
<note>Communicated by A.P. Fordy</note>
<note type="content">Fig. 1: Schematic of rotary ultrasonic machining. 1 - piezo-electric element, 2 - transducer assembly, 3 - coupler, 4 - diamond impregnated/coated tool, 5 - workpiece, 6 - fixture, 7 - pump, 8 - tank, 9 - coolant jet.</note>
<note type="content">Fig. 2: A dynamic model of rotary ultrasonic drilling.</note>
<note type="content">Fig. 3: Time history of (a) the tool displacement and (b) the impact force.</note>
<note type="content">Fig. 4: Influence of the static hydraulic force fHYD on the time history of the impacting force for (a) fHYD=0.1, (b) fHYD=0.4 and (c) fHYD=0.8.</note>
<note type="content">Fig. 5: The material removal rate versus static force.</note>
<subject><genre>Keywords</genre>
<topic>Ultrasonics</topic>
<topic>Impact oscillator</topic>
<topic>Machining</topic>
</subject>
<relatedItem type="host"><titleInfo><title>Physics Letters A</title>
</titleInfo>
<titleInfo type="abbreviated"><title>PLA</title>
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<genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre>
<originInfo><publisher>ELSEVIER</publisher>
<dateIssued encoding="w3cdtf">1999</dateIssued>
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<identifier type="ISSN">0375-9601</identifier>
<identifier type="PII">S0375-9601(00)X0238-1</identifier>
<part><date>1999</date>
<detail type="volume"><number>259</number>
<caption>vol.</caption>
</detail>
<detail type="issue"><number>2</number>
<caption>no.</caption>
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<extent unit="issue-pages"><start>81</start>
<end>170</end>
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<extent unit="pages"><start>91</start>
<end>96</end>
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<identifier type="istex">9122D57537AAF69A0A4F4588C0718CFA4C2B14AF</identifier>
<identifier type="ark">ark:/67375/6H6-PPW31LM6-Z</identifier>
<identifier type="DOI">10.1016/S0375-9601(99)00416-8</identifier>
<identifier type="PII">S0375-9601(99)00416-8</identifier>
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