Analysis of Cutting Stability in Vibration Assisted Machining Using Ananalytical Predictive Force Model

Gao, Yuan; Sun, Ronglei; Leopold, Jürgen

doi:10.1016/j.procir.2015.03.014

Cited by 20 publications

(11 citation statements)

References 21 publications

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“…Many researchers have dedicated themselves to reveal the theoretical basis that VAM can effectively improve machining quality and increase machining efficiency. One feasible explanation is that VAM can increase cutting stability and suppress chatter compared with CM, thus the component can get higher accuracy and better surface roughness after machining 5 and a larger depth of cut can be used to increase the rate of metal removal.…”

Section: Introductionmentioning

confidence: 99%

Analysis of vibration signals to quantify displacement amplitude in the monitoring of vibration-assisted turning

Prasad

Rao

Krishna

2017

Proceedings of the Institution of Mechanical Engineers, Part E:

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Vibration-assisted machining combines precision machining with small-amplitude tool vibration at high frequency to improve the fabrication process. It has been applied to a number of processes from turning to drilling to grinding. This work presents the validation of tool condition monitoring system based on vibration parameters. For this purpose, an experimental investigation is planned to acquire vibration signal data during the machining. This work primarily focuses on quantifying the presence of relative vibrations between the cutting tool and a workpiece during vibration-assisted turning process which helps in predicting tool life. For this purpose, an online acoustic optic emission-based vibration transducer, i.e. Laser Doppler Vibrometer, is used as a component of a novel approach. Cutting force and vibration signals were recorded and analyzed. Machine dynamic effects such as cutting force and tool wear are taken into account during the dry machining of Ti-6Al-4V alloys specimens. Identifying the correlation among tool wear, cutting forces and displacement due to vibration is a critical task in the present study. Real-time experimental findings are used to predict the evolution of displacement and tool wear in the experiment. Efficacy of a logical relationship among the process variables such as displacement, feed rate, spindle rotational speed, and depth of cut is critically examined. Results of the present study are used to establish a strategy for real-time efficient tool monitoring systems for vibration-assisted turning operation. The wear mechanisms of DNMA 432 coated carbide and uncoated carbide insert tools were examined at different combinations of feed rate, spindle speed, and depth of cut for turning of Ti-6Al-4V workpiece material.

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Section: Introductionmentioning

confidence: 99%

Analysis of vibration signals to quantify displacement amplitude in the monitoring of vibration-assisted turning

Prasad

Rao

Krishna

2017

Proceedings of the Institution of Mechanical Engineers, Part E:

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“…As is shown in Figure 10, the surface roughness of SVC and CC keeps the same level for any given feed rate condition. On the one hand, due to the cutting force reduction in SVC, the system stiffness and allowable depth of cut are enhanced [35]. For that point, the surface quality of SVC is better than that of CC.…”

Section: Resultsmentioning

confidence: 99%

Experimental Study on a “Snake-Type” Vibration Cutting Method for Cutting Force and Cutting Heat Reductions

2019

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Cutting is the foundation of manufacturing in industry. The main cutting objects include metals, ceramics, glasses, compositions, and even biological materials such as tissues and bones. The special properties of each material such as hardness, ductility, brittleness, and heat conductivity lead to either a large cutting force or a high cutting temperature. Both of these factors result in poor machinability due to rapid tool wear or break or unsatisfactory surface integrity of the material finishing surface using the conventional cutting (CC, conventional cutting) types. In nature, snakes have their own way of reducing heat accumulation on their body when moving on the hot desert surface. They move forward along an “S”-type path, so that the bottom of their body separates from the desert intermittently. In this way, the separation interval both reduces the cutting heat accumulations and effectively achieves cooling by allowing the air to go through. In addition, the acceleration of Odontomachus monticola’s two mandibles when striking a target can reach 71,730 g m/s2 within 180 ms, which can easily break the target surface by the transient huge impact. Therefore, based on a snake’s motion on the desert surface and Odontomachus monticola’s striking on the target surface, respectively, an ultrasonic-frequency intermittent cutting method, also called “snake-type” vibration cutting (SVC, snake-type vibration cutting), was proposed in this study. First, its bionic kinematics were analyzed, then the SVC system’s design was introduced. Finally, cutting experiments were conducted on a common and typical difficult-to-cut material, namely titanium alloys. Cutting force, cutting temperature, and the surface integrity of the material finishing surface were measured, respectively. The results demonstrated that, compared to conventional cutting methods, SVC achieved a maximum of 50% and 30% reductions of cutting force and cutting temperature, respectively. Moreover, the surface integrity was improved both in surface roughness and residual stress state.

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“…In [24] has performed experimental investigations on the impact of ultrasonic vibration in nanosecond laser machining on the workpiece surface finish. In [31] have summarized that the ultrasonic assisted machining is an advanced processing technology has a potential to enhance the machining procedure, especially for stiff material. In [32] researched on the ultrasonic additive manufacturing in a hybrid production process and discovered the processes of adding ultrasonic are matched to high tech metal matrix composites with high temperatures and pressure.…”

Section: B Ultrasoundmentioning

confidence: 99%

Improvement of Surface Finish by Multiple Piezoelectric Transducers in Fused Deposition Modelling

Mohamed¹,

Maidin²,

Mohamed³

et al. 2016

International Journal on Advanced Science, Engineering and Information Technology

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Additive Manufacturing (AM) which embrace as a new range technology of creating and producing end user parts in term of adding material layer by layer to create solid objects from 3D CAD data. AM in particular Fused Deposition Modelling (FDM) used (ABS) thermoplastic have shown the most popular among the industry as its technology can print complex geometrical part without human intervention and tools. However, FDM fierce enemy whereas the common problem of stair-stepping, which means that seam lines appear between layers and excess material if often left as a residue, cause to lead rough surface and poor quality finish. It is often desirable for an AM model to have aesthetic or functional importance. Hence, reducing layer thickness will generally improve surface roughness but will add to the build time for the model. As an interest investigates the use of ultrasonic for FDM, this experiment will focus on the effect of applying multiple piezoelectric transducer for FDM printer. This paper aims to explore the effect use of multiple piezoelectric with different frequency applied (27, 40, 50 kHz) to improve surface finish quality part printed by FDM whereby an ultrasonic transducer firmly attached onto the platform. Optical microscope with the aid of pro VIS software version 2.90 was used to measure the quality of surface roughness of samples printed with vibration in the above stated frequency. Hence, it was found that 1 piezo with 50 kHz frequency applied to the FDM machine achieved improve surface finish due to less layer thickness defect and finer layer thickness produce.

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Analysis of Cutting Stability in Vibration Assisted Machining Using Ananalytical Predictive Force Model

Cited by 20 publications

References 21 publications

Analysis of vibration signals to quantify displacement amplitude in the monitoring of vibration-assisted turning

Analysis of vibration signals to quantify displacement amplitude in the monitoring of vibration-assisted turning

Experimental Study on a “Snake-Type” Vibration Cutting Method for Cutting Force and Cutting Heat Reductions

Improvement of Surface Finish by Multiple Piezoelectric Transducers in Fused Deposition Modelling

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