| Title: | Optimizing rock breaking performance: the influence of chamfer on polycrystalline diamond compact (PDC) cutters |
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| Authors: | ID Ju, P. (Author) |
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| Files: |  APEM18-4_417-433.pdf (1,96 MB)
MD5: ED29A517A1E65AE153282E6EBC8F106B
 https://apem-journal.org/Archives/2023/APEM18-4_417-433.pdf
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| Language: | English |
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| Work type: | Article |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FS - Faculty of Mechanical Engineering
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| Abstract: | Research on the rock-breaking performance of the Polycrystalline Diamond Compact (PDC) cutter has primarily focused on sharp cutters, often overlooking the influence of chamfer. Notably, the design of chamfer parameters has been largely unreported. In this study, we established a theoretical model of cutting force that takes chamfer into account. We analysed the primary and secondary relationships of four factors – back rake angle, depth of cut, chamfer angle, and chamfer length – on the force of the PDC cutter. This was done through a pseudo-level orthogonal level test. A numerical simulation, based on the Smooth Particle Hydrodynamic (SPH) method, was conducted to analyse the rock-breaking force and stress distribution characteristics of PDC cutters with different chamfer angles. Combined with a drop hammer impact test, we provided an optimized design of chamfer parameters. Our findings revealed that while the chamfer had a relatively minor influence on the force of the PDC cutter, it contributed to the optimal distribution of stress on the PDC cutter. This effectively protected the cutting edge and prevented early cracks and spalls of the cutter. When the chamfer angle was less than or equal to the back rake angle, the resultant force of the PDC cutter increased with the increase of the chamfer angle. However, when the chamfer angle was greater than the back rake angle, the resultant force of the PDC cutter first increased and then slightly decreased with the increase of the chamfer angle. Additionally, the resultant force of the PDC cutter increased approximately linearly with the increase of chamfer length. When the chamfer angle of the PDC cutter was between 30° and 45°, the fluctuation of the cutting force was relatively smooth, the rock-breaking process was stable, and the cutter’s impact resistance energy was relatively higher. These findings will provide valuable guidelines for the design of chamfered PDC cutters. |
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| Keywords: | polycrystalline diamond compact (PDC) cutter, PDC cutter, chamfer parameters, optimization, cutting force, theoretical analysis, numerical simulation, Smooth ParticleHydrodynamic, SPH, stress characteristics |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 25.10.2023 |
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| Article acceptance date: | 15.12.2023 |
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| Publication date: | 28.12.2023 |
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| Publisher: | Chair of Production Engineering (CPE), University of Maribor Faculty of Mechanical Engineering |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 417-433 |
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| Numbering: | Vol. 18, no. 4 |
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| PID: | 20.500.12556/DKUM-97126  |
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| UDC: | 621.937 |
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| ISSN on article: | 1854-6250 |
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| COBISS.SI-ID: | 268954883 |
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| DOI: | 10.14743/apem2023.4.482 |
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| Copyright: | Content from this work may be used under the terms of the Creative Commons Attribution 4.0 International Licence (CC BY 4.0). Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. |
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| Publication date in DKUM: | 19.02.2026 |
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| Views: | 201 |
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| Downloads: | 1 |
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| Metadata: |    |
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| Categories: | Misc.
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