An Experimental Investigation of the Effects of Spindle Speed Variation on Tool Wear in Turning

Albertelli, Paolo; Mussi, Valerio; Ravasio, Chiara; Monno, Michele

doi:10.1016/j.procir.2012.10.006

Cited by 16 publications

(15 citation statements)

References 7 publications

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“…This is attributed to the increase in hardness and strength of the composite with the increase in weight percentage of SiC particles. This phenomenon matches very well with the pattern of variation of tool wear that is already reported [24]. In general, the flank wear increased with the increase in the number of holes tapped.…”

Section: Flank Wearsupporting

confidence: 91%

An investigation into tapping of Al6061/SiC metal matrix composite with straight flute HSS machine tap

Nagaraja

Adhikari

Yasir

2019

JMES

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The present study deals with tapping of Al6061/SiC metal matrix composite. Stir casting technique was used for the fabrication of composite. Castings were produced by varying weight percentages of SiC (5%, 7.5% and 10%) of 23μm size in Al6061. The tapping experiments were conducted for the machinability study of Al6061/SiC metal matrix composite using M8 x 1.25 HSS machine taps. The tapping operation was performed under dry condition with different cutting speeds. Torque required for tapping was measured using piezoelectric based 4-component drill tool dynamometer. Surface morphology and profile of thread surfaces were analysed using Scanning Electron Microscope (SEM) and metallurgical microscope. Estimation of progressive flank wear of machine taps was undertaken using profile projector. The performance of HSS machine tap was evaluated in terms of tapping torque, tool flank wear, and surface characteristics of thread surfaces. The flank wear of uncoated HSS machine tap increased with the increase in weight percentage of SiC in Al/SiC composite for a particular cutting speed. Further, when the matrix materials were reinforced by the same kind and the same weight percentage of SiC particles, the flank wear of the tool was found to increase with cutting speed. In addition, the damage caused to thread profiles increased with the increase in cutting speed and weight percentage of SiC.

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Section: Flank Wearsupporting

confidence: 91%

An investigation into tapping of Al6061/SiC metal matrix composite with straight flute HSS machine tap

Nagaraja

Adhikari

Yasir

2019

JMES

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“…Both the analyzed factors (cutting speed and cutting speed modulation) affected the tool life Tl. A detailed analysis on the power of the tests is reported in Albertelli et al [13]. Considering that the Fisher's (F) test p-value linked to SSSV/CSM factor (Table 2) is quite low even if the power of the test is not very high, it can be finally concluded that the modulation of the cutting speed negatively affects the life of the tool.…”

Section: Experimental Tool Life Resultsmentioning

confidence: 99%

“…A Stereomicroscope Optika SZN-T with Motic SMZ-168T support was used to measure flank wear width (VBB) during the cutting tests. More details on the performed wear measurements are reported in Albertelli et al [13]. A carbide tool with a lead angle =90° was adopted (ISO standard code: TNMG220404-M5 5615 with Al2O3-TiCN coatings) and fixed on tool holder, ISO code MTJNL2525M22.…”

Section: Methodsmentioning

confidence: 99%

“…The lathe (SOMAB UNIMAB 400) used to perform cutting tests is equipped with an analogical Numerical Control (NC). Refer to Albertelli et al [13] for more details on the modifications made on the lathe to implement the speed modulation. Before performing the wear tests, it was verified that both the available spindle torque and spindle drive bandwidth were suitable to implement the SSSV for all the processed bar diameters.…”

Section: Methodsmentioning

confidence: 99%

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The analysis of tool life and wear mechanisms in spindle speed variation machining

Albertelli

Mussi²,

Monno

2014

Int J Adv Manuf Technol

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Regenerative chatter vibrations generally limit the achievable material removal rate (MRR) in machining. The diffusion of spindle speed variation (SSV) as a chatter suppression strategy is mainly restricted to academy and research centers. A lack of knowledge concerning the effects of non-stationary machining is still limiting its use in real shop floors. This research is focused on the effects of spindle speed variation technique on tool duration and on wear mechanisms. No previous researches have been performed on this specific topic. Tool wear tests in turning were carried out following a factorial design: cutting speed and cutting speed modulation were the investigated factors. The carbide life was the observed process response. A statistical approach was used to analyze the effects of the factors on the tool life. Moreover, the analysis was extended to the wear mechanisms involved during both constant speed machining (CSM) and SSV. The worn out carbide surfaces were examined under a scanning electron microscope (SEM) equipped with an energy dispersive X-ray spectrometer (EDS). Significant differences were appreciated. It was observed that SSV tends to detach the coatings of the inserts, entailing a mechanism that is quite unusual in wet steel turning and thus fostering the wear of the tool. The performed analysis allowed to deduce that the intensified tool wear (in SSV cutting) is mainly due to thermo-mechanical fatigue.

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“…In [12], SSV is used to suppress chatter in the noncircular process through theoretical computation and experiments. In [13], chatter suppression based on SSV in the turning process with tool wear is conducted by an experimental study. Since sinusoidal spindle speed variation (SSSV) is more easily tracked than other periodic functions, such as the triangular one, it is the most common form of SSV.…”

mentioning

confidence: 99%

Stability Analysis and Stabilization of a Class of Cutting Systems With Chatter Suppression

Kang

Chen

et al. 2015

IEEE/ASME Trans. Mechatron.

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In this paper, a new method for stability analysis of a single degree of freedom (SDOF) cutting system with sinusoidal spindle speed variation (SSSV) is proposed. Based on the approximately periodic property of the time delay in the turning process and the delay decomposition method, novel criteria of stability analysis for an SDOF cutting system are presented. Moreover, a state feedback controller is designed to stabilize the system and improve the steady-state response. Numerical simulation shows the effectiveness of the method.

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An Experimental Investigation of the Effects of Spindle Speed Variation on Tool Wear in Turning

Cited by 16 publications

References 7 publications

An investigation into tapping of Al6061/SiC metal matrix composite with straight flute HSS machine tap

An investigation into tapping of Al6061/SiC metal matrix composite with straight flute HSS machine tap

The analysis of tool life and wear mechanisms in spindle speed variation machining

Stability Analysis and Stabilization of a Class of Cutting Systems With Chatter Suppression

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