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Determination of Processing Precision of Hole in Industrial Plastic Materials

The precision of the thread processed by tapping is closely related to the precision of the pre-drilling of the blank. Currently, the technologies for processing threads with the tap in the case of metals are well established. In this sense, there are tables and clear recommendations about the tool...

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Autores principales: Ravai-Nagy, Sandor, Pop, Alina Bianca, Titu, Aurel Mihail
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9864973/
https://www.ncbi.nlm.nih.gov/pubmed/36679228
http://dx.doi.org/10.3390/polym15020347
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author Ravai-Nagy, Sandor
Pop, Alina Bianca
Titu, Aurel Mihail
author_facet Ravai-Nagy, Sandor
Pop, Alina Bianca
Titu, Aurel Mihail
author_sort Ravai-Nagy, Sandor
collection PubMed
description The precision of the thread processed by tapping is closely related to the precision of the pre-drilling of the blank. Currently, the technologies for processing threads with the tap in the case of metals are well established. In this sense, there are tables and clear recommendations about the tool pairs—helical drill-tap, depending on the size of the thread, but in the case of plastics, no correlations or recommendations have been found. A well-known aspect concerns the fact that the hole made in plastics is obtained with a smaller diameter than the diameter of the drill bit used. To determine the differences between the drill bit and the diameter of the resulting hole, and its precision on different types of plastic materials, experimental research was started. At the same time, the tolerance of the resulting hole was checked and the influence of the cutting regime on the processing precision was studied. During the experiments, plastic materials often used in the aeronautical and car-building industries were used: POM-C, PA6, PEHD1000, Sika Block 700, Sika Block 960, and Sika Block 980. Following the experiments, differences in the diameter of the holes processed were found according to the plastic mass of even 0.3 mm, which is 4.4% of the diameter of the hole. Based on the experimental results and the design of the experiment, recommendations could be made about the diameter of the drill to use to obtain the desired diameter of the hole after processing.
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spelling pubmed-98649732023-01-22 Determination of Processing Precision of Hole in Industrial Plastic Materials Ravai-Nagy, Sandor Pop, Alina Bianca Titu, Aurel Mihail Polymers (Basel) Article The precision of the thread processed by tapping is closely related to the precision of the pre-drilling of the blank. Currently, the technologies for processing threads with the tap in the case of metals are well established. In this sense, there are tables and clear recommendations about the tool pairs—helical drill-tap, depending on the size of the thread, but in the case of plastics, no correlations or recommendations have been found. A well-known aspect concerns the fact that the hole made in plastics is obtained with a smaller diameter than the diameter of the drill bit used. To determine the differences between the drill bit and the diameter of the resulting hole, and its precision on different types of plastic materials, experimental research was started. At the same time, the tolerance of the resulting hole was checked and the influence of the cutting regime on the processing precision was studied. During the experiments, plastic materials often used in the aeronautical and car-building industries were used: POM-C, PA6, PEHD1000, Sika Block 700, Sika Block 960, and Sika Block 980. Following the experiments, differences in the diameter of the holes processed were found according to the plastic mass of even 0.3 mm, which is 4.4% of the diameter of the hole. Based on the experimental results and the design of the experiment, recommendations could be made about the diameter of the drill to use to obtain the desired diameter of the hole after processing. MDPI 2023-01-09 /pmc/articles/PMC9864973/ /pubmed/36679228 http://dx.doi.org/10.3390/polym15020347 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Ravai-Nagy, Sandor
Pop, Alina Bianca
Titu, Aurel Mihail
Determination of Processing Precision of Hole in Industrial Plastic Materials
title Determination of Processing Precision of Hole in Industrial Plastic Materials
title_full Determination of Processing Precision of Hole in Industrial Plastic Materials
title_fullStr Determination of Processing Precision of Hole in Industrial Plastic Materials
title_full_unstemmed Determination of Processing Precision of Hole in Industrial Plastic Materials
title_short Determination of Processing Precision of Hole in Industrial Plastic Materials
title_sort determination of processing precision of hole in industrial plastic materials
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9864973/
https://www.ncbi.nlm.nih.gov/pubmed/36679228
http://dx.doi.org/10.3390/polym15020347
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