“…The results were consistent with the previous studies in the literature. 7–9,20,22 Figure 7.Frequency response function in (a) Conventional turning (b) Magnetic assisted turning (0.51 T).…”
Section: Resultsmentioning
confidence: 99%
“…The results of the study are consistent with the literature in this respect. [7][8][9]20 Since implementing magnets to existing machining setups is possible, it was thought that neodymium magnets could be integrated into applications such as deep boring, grooving, etc. In terms of surface roughness/cutting speed relation, the increase in cutting speed generally decreases the surface roughness when keeping the feed rate constant.…”
Section: Surface Roughness Analysismentioning
confidence: 99%
“…However, the narrow range of the cutting speed causes deviations in the results as in the literature. 20…”
Section: Max Cutting Temperature Analysismentioning
Several methods have been developed in order to improve the traditional machining processes and machining outputs. In this study, the effect of the magnetic field on the turning process was investigated. AISI-4140 was machined with different cutting speeds and magnetic flux density magnitudes. The magnetic field was generated with neodymium magnets. Machining stability, surface roughness, and maximum cutting temperature were measured. Additionally, chip shapes were examined. The machining stability was determined by measuring the vibration amplitude and other vibrational parameters (natural frequency, stiffness, and damping coefficients). Conventional turning and magnetic assisted turning were performed under the same cutting parameters consecutively, and the results were compared. According to the results, it was observed that neodymium magnets attached to the cutting tool improve machining stability and damping properties. Surface roughness was decreased between 6%–10% in magnetic assisted turning. Furthermore, it has been observed that the maximum cutting temperatures have been increased between 10%–45% in the magnetic assisted machining. Besides, it can be said that magnets contribute to improving chip control by collecting the chips on them while machining AISI-4140 steel.
“…The results were consistent with the previous studies in the literature. 7–9,20,22 Figure 7.Frequency response function in (a) Conventional turning (b) Magnetic assisted turning (0.51 T).…”
Section: Resultsmentioning
confidence: 99%
“…The results of the study are consistent with the literature in this respect. [7][8][9]20 Since implementing magnets to existing machining setups is possible, it was thought that neodymium magnets could be integrated into applications such as deep boring, grooving, etc. In terms of surface roughness/cutting speed relation, the increase in cutting speed generally decreases the surface roughness when keeping the feed rate constant.…”
Section: Surface Roughness Analysismentioning
confidence: 99%
“…However, the narrow range of the cutting speed causes deviations in the results as in the literature. 20…”
Section: Max Cutting Temperature Analysismentioning
Several methods have been developed in order to improve the traditional machining processes and machining outputs. In this study, the effect of the magnetic field on the turning process was investigated. AISI-4140 was machined with different cutting speeds and magnetic flux density magnitudes. The magnetic field was generated with neodymium magnets. Machining stability, surface roughness, and maximum cutting temperature were measured. Additionally, chip shapes were examined. The machining stability was determined by measuring the vibration amplitude and other vibrational parameters (natural frequency, stiffness, and damping coefficients). Conventional turning and magnetic assisted turning were performed under the same cutting parameters consecutively, and the results were compared. According to the results, it was observed that neodymium magnets attached to the cutting tool improve machining stability and damping properties. Surface roughness was decreased between 6%–10% in magnetic assisted turning. Furthermore, it has been observed that the maximum cutting temperatures have been increased between 10%–45% in the magnetic assisted machining. Besides, it can be said that magnets contribute to improving chip control by collecting the chips on them while machining AISI-4140 steel.
“…Frontiers in Mechanical Engineering frontiersin.org 2018; Yip and To, 2018;Yip and To, 2019b). By improving these two factors, cutting conditions and the surface generation mechanisms could be improved.…”
Section: Experimental Studymentioning
confidence: 99%
“…The application of magnetic field assistance in ultra-precision SPDT is a relatively new topic in advanced manufacturing technologies. Recently, a few experimental studies have been performed to evaluate the effects of using magnetic field assistance with a magnetic flux density of 0.01 and 0.02 T during ultra-precision SPDT of Ti-6Al-4V (Yip and To, 2019a;Yip and To, 2019b). The results of experimental investigations show that increasing the strength of the magnetic field could positively impact the machining conditions.…”
Single-point diamond turning (SPDT) is the state-of-the-art technology for ultra-precision manufacturing of optical products with optical surface roughness down to 1 nm. The SPDT technology has an important role in advanced manufacturing of critical components in different fields of industry. In a SPDT process, different cutting mechanisms affect the optical surface generation and reduce the quality of the turned product. Different efforts have been undertaken to improve the machining conditions as well as optical surface generation mechanisms. Recently, the application of magnetic field assistance in non-conventional SPDT platforms has shown promising results in terms of improving the cutting stability as well as the quality of surface finish. The application of magnetic field assistance becomes more important in SPDT of hard-to-cut materials including titanium alloy. In this study, magnetic field assistance is used in SPDT of Ti-6Al-4V alloy. The machining results show that using this technique could significantly improve the machining conditions and the quality of optical surface generation. The magnetic field assisted SPDT with air coolant could successfully improve the quality of surface finish by 62.5% when compared to non-magnetic purely mechanical SPDT process in dry cutting conditions. Magnetic field assistance is a passive machining technique, environmentally friendly, and it can promote green manufacturing and clean production in ultra-precision SPDT applications.
This study examined the effect of magnetic field with single point coated‐carbide tool during turning process of Inconel718 (In718). After the turning process, tribological properties (surface roughness and tool wear) and chip morphology were analyzed. Two cylindrical Neodymium (N52) grade permanent magnets are used to apply the magnetic field during the machining. Cutting speed and magnetic field intensity along with constant feed and depth of cut are used to analyze tribological properties along with chip morphology. Experimental results show that 80 m/min cutting speed and 426 Gauss magnetic field has the best results in term of lowest surface roughness and tool wear. Lorentz forces developed due to the applied external magnetic field help to improve surface roughness compared to nonmagnetic field machining. Developed fine particles during the turning process get repulsed in case of magnetic field machining which helps to improve tool wear.
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