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Ultima descărcare din IBN: 2023-10-21 20:48 |
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SM ISO690:2012 STRONCEA, Aurel. Improving the designing of mechanical technologies through optimized dimensional structures. In: Journal of Engineering Sciences, 2023, vol. 30, nr. 1, pp. 8-21. ISSN 2587-3474. DOI: https://doi.org/10.52326/jes.utm.2023.30(1).01 |
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Journal of Engineering Sciences | ||||||
Volumul 30, Numărul 1 / 2023 / ISSN 2587-3474 /ISSNe 2587-3482 | ||||||
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DOI:https://doi.org/10.52326/jes.utm.2023.30(1).01 | ||||||
CZU: 621.9:519.8 | ||||||
Pag. 8-21 | ||||||
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Modern trends in technological development related to the use of numerical control machine tools are manifested by minimizing the number of technological operations, installations, operation elements. One of the most effective ways to improve the design of mechanical processing technologies is to create optimal technological dimensional structures. In the paper, optimality requirements are formulated in relation to the elementary dimensional structures and the entire structure. It is shown that a technological dimensional structure is optimal if it is similar to the constructive dimensional structure. Real constructive dimensional structures are very complex and varied, so that the optimality of some sequences of the structure excludes ensuring the optimality of other sequences. Reciprocal structural adaptations are required, which can be done by constructively resizing the equivalent part. As a criterion for the resizing, the non-admission of the increase in the tolerance of the machining allowance is manifested. |
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Cuvinte-cheie mechanical technologies designing, optimal dimensional structure, Dimensional analysis, technological dimensional chain, machining allowance, proiectare tehnologii de prelucrare mecanică, structură dimensională optimală, analiza dimensională, lanț dimensional tehnologic, adaos de prelucrare |
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DataCite XML Export
<?xml version='1.0' encoding='utf-8'?> <resource xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns='http://datacite.org/schema/kernel-3' xsi:schemaLocation='http://datacite.org/schema/kernel-3 http://schema.datacite.org/meta/kernel-3/metadata.xsd'> <identifier identifierType='DOI'>10.52326/jes.utm.2023.30(1).01</identifier> <creators> <creator> <creatorName>Stroncea, A.</creatorName> <affiliation>Universitatea Tehnică a Moldovei, Moldova, Republica</affiliation> </creator> </creators> <titles> <title xml:lang='en'>Improving the designing of mechanical technologies through optimized dimensional structures</title> </titles> <publisher>Instrumentul Bibliometric National</publisher> <publicationYear>2023</publicationYear> <relatedIdentifier relatedIdentifierType='ISSN' relationType='IsPartOf'>2587-3474</relatedIdentifier> <subjects> <subject>mechanical technologies designing</subject> <subject>optimal dimensional structure</subject> <subject>Dimensional analysis</subject> <subject>technological dimensional chain</subject> <subject>machining allowance</subject> <subject>proiectare tehnologii de prelucrare mecanică</subject> <subject>structură dimensională optimală</subject> <subject>analiza dimensională</subject> <subject>lanț dimensional tehnologic</subject> <subject>adaos de prelucrare</subject> <subject schemeURI='http://udcdata.info/' subjectScheme='UDC'>621.9:519.8</subject> </subjects> <dates> <date dateType='Issued'>2023-04-16</date> </dates> <resourceType resourceTypeGeneral='Text'>Journal article</resourceType> <descriptions> <description xml:lang='en' descriptionType='Abstract'><p>Modern trends in technological development related to the use of numerical control machine tools are manifested by minimizing the number of technological operations, installations, operation elements. One of the most effective ways to improve the design of mechanical processing technologies is to create optimal technological dimensional structures. In the paper, optimality requirements are formulated in relation to the elementary dimensional structures and the entire structure. It is shown that a technological dimensional structure is optimal if it is similar to the constructive dimensional structure. Real constructive dimensional structures are very complex and varied, so that the optimality of some sequences of the structure excludes ensuring the optimality of other sequences. Reciprocal structural adaptations are required, which can be done by constructively resizing the equivalent part. As a criterion for the resizing, the non-admission of the increase in the tolerance of the machining allowance is manifested.</p></description> <description xml:lang='ro' descriptionType='Abstract'><p>Tendințele moderne în dezvoltarea tehnologică legate de utilizarea mașinilor-unelte cu comandă numerică se manifesta prin minimizarea numărului de operații tehnologice, de instalări, de faze tehnologice. Una dintre cele mai eficiente modalități de îmbunătățire a proiectării tehnologiilor de prelucrare mecanică este crearea structurilor dimensionale tehnologice optimale. In lucrare sunt formulate cerințe de optimalitate în raport cu structurile dimensionale elementare şi cu structura întreagă. Se arata ca o structură dimensională tehnologică este optimală daca este asemănătoare cu structura dimensională constructivă. Structurile dimensionale constructive reale sunt foarte complexe și variate, astfel încât optimitatea unor secvențe ale structurii exclude asigurarea optimității altor secvențe. Sunt necesare adaptări structurale reciproce, care se pot face prin redimensionarea constructivă echivalenta a piesei. În calitate de criteriu al redimensionării se manifesta neadmiterea creşterii toleranţei adaosurilor de prelucrare.</p></description> </descriptions> <formats> <format>application/pdf</format> </formats> </resource>