An improved remote sensing technique for estimating tool–chip interface temperatures in turning

Li, Kuan‐Ming; Wang, Chia; Chu, Wei-Ying

doi:10.1016/j.jmatprotec.2013.04.014

Cited by 12 publications

(6 citation statements)

References 13 publications

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“…As can be seen, the cutting temperature increases linearly with the cutting speed for all fiber orientations. The measured milling temperature in this research is lower than the cutting temperatures reported in other machining processes, such as drilling, 17,20,21 because of a lower axial depth of cut and a more efficient heat transfer in milling as compared to drilling. Because the temperatures were measured at 0.2 mm from the cutting edge, it could be argued that the temperature is higher at the cutting edge.…”

Section: Resultscontrasting

confidence: 58%

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Experimental investigation of the cutting temperature and surface quality during milling of unidirectional carbon fiber reinforced plastic

Ghafarizadeh

Lebrun

Châtelain

2015

Journal of Composite Materials

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The surface machining of carbon fiber reinforced plastics materials is a challenging process, given the heterogeneity and anisotropic nature of composites, which, combined with the abrasiveness of the fibers, can produce some surface damage and extensive tool wear. The cutting temperature is one of the most important factors associated with the tool wear rate and machinability of these materials, which are also affected by the mechanical and thermal properties of the workpiece material and the cutting conditions. In this work, the cutting temperature, cutting forces, and composite surface roughness were measured under different cutting conditions for the end milling of unidirectional carbon fiber reinforced plastics. Cutting speeds ranging from 200 to 350 m/min; a feed rate of 0.063 mm/rev; fiber orientations of 0, 45, 90, and 135 ; and a 0.5 mm depth of cut were considered. The results show that the cutting speed and fiber orientation have a significant influence on the cutting temperature and cutting forces. The maximum and minimum cutting forces and temperatures were achieved for fiber orientations of 90 and 0 , respectively.

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Section: Resultscontrasting

confidence: 58%

“…20 The cutting temperature is also a major factor that directly affects tool life. 21 Figure 7 shows the effect of the cutting speed on the maximum cutting temperature at different fiber orientations. As can be seen, the cutting temperature increases linearly with the cutting speed for all fiber orientations.…”

Section: Resultsmentioning

confidence: 99%

Experimental investigation of the cutting temperature and surface quality during milling of unidirectional carbon fiber reinforced plastic

Ghafarizadeh

Lebrun

Châtelain

2015

Journal of Composite Materials

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“…The abrasiveness of the fibers alone is a cause of wear for the cutting tools. This wear is the source of a temperature increase which in turn provokes thermal damage on the cut surfaces and on the mechanical properties, specifically if the glass transition temperature (Tg) of the matrix is exceeded [4][5][6]. Previous studies showed that cutting temperature may reach values up to 450°C [7,8] during machining if tool wear is not properly controlled.…”

Section: Introductionmentioning

confidence: 99%

Effect Of Additives On Cutting Temperature Of Glass Fibers Reinforced Polymers

Kuate-Togue¹,

Châtelain²,

Ouellet‐Plamondon³

2018

Progress in Canadian Mechanical Engineering

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Composites are abrasive materials that generate heat during machining operations. This heat generates thermal damage locally and may severely alter the mechanical properties of the components if it exceeds the glass transition temperature of the matrix. This research studies the influence of additives, mixed to the epoxy matrix of Glass Fiber Reinforced Polymer (GFRP), on the cutting temperature. The results show that wax together with clay and a wetting agent, contribute to reduce the maximum cutting temperature, on a 300mm length of cut, a value up to 28% as compared to a plain epoxy matrix.

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“…Thermocouple techniques have been widely used in various machining process such as turning [101,102], grinding [103,104], milling [105] and drilling [106] to directly measure the average temperature in a specific area near the cutting edge. However, this method is limited as it cannot indicate any temperature distribution or high local temperature which only appears for short periods.…”

mentioning

confidence: 99%

“…For instance, due to the different physical properties of the cutting tools and workpieces, tool-work thermocouple and metallographic techniques could not be used in rock cutting process. Temperature measurements through infrared methods are significantly affected by chip obstruction [102,115]. …”

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confidence: 99%

A study of rock cutting with point attack picks

Shao¹

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Hard rock mining is currently carried out by drill-and-blast. With the increasing demand for automated, selective and remote mining, the industry hopes to replace conventional drill-and-blast with mechanical excavation. Modern mining machines have sufficient power for cutting hard rocks.The 'bottleneck' which limits the use of mechanical excavation for hard rock mining is the cutting tool wear. Rock cutting tools usually use tungsten carbide (WC) tipped picks. The WC tipped picks are effective and adequate for cutting relatively soft rocks, but unsuitable for hard rocks. To address this issue, CSIRO has developed Super Material Abrasive Resistant Tool (SMART*CUT), aiming at providing an effective cutting tool for hard rock mining. The key feature of the SMART*CUT technology is replacing the conventional WC with thermally stable diamond composite (TSDC) as the cutting tip of the pick. The main advantages of the TSDC tipped picks include (a) good thermal stability, (b) high wear resistance and (c) the ability to mine relatively hard deposits in comparison with the WC tipped picks. The disadvantage of the TSDC tipped picks is their low fracture toughness. To optimise the application of the TSDC tipped picks, this work aimed to improve the understanding of the rock cutting process and mechanisms, in particular to gain a better insight into the interaction between tools and rocks through systematic experimental and numerical studies. The rock cutting processes with the TSDC and WC tipped point attack picks were comprehensively investigated in terms of cutting force, specific energy, tool tip temperature and cutting chips.A study of rock cutting was systematically carried out using the Taguchi method to determine the effects of the cutting parameters on the performance of the TSDC tipped picks. The signal-to-noise (S/N) ratios and the analysis of variance (ANOVA) were applied to investigate the effects of the depth of cut, attack angle, spacing and cutting speed on the mean cutting, normal and bending forces involved in the rock cutting process. The statistical significance of process factors was determined and the optimum parametric combinations were successfully identified. Furthermore, the multiple linear regression (MLR) and artificial neural network (ANN) techniques were adopted to develop the empirical models for predicting the mean cutting and normal forces with the TSDC tipped picks. The established empirical force models showed good predictive capabilities with acceptable accuracy. The ANN models offered better accuracy and less deviation than the MLR models.The pick cutting temperature involved in rock cutting was measured using thermal infrared imaging and embedded thermocouple techniques. The temperature distribution in the cutting area was acquired by using a thermal infrared camera with high speed imaging rates. The results showed that II the TSDC tipped picks generated much lower thermal energy and much fewer sparks than the WC tipped picks. The temperature at the pick tip in the contact area wi...

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An improved remote sensing technique for estimating tool–chip interface temperatures in turning

Cited by 12 publications

References 13 publications

Experimental investigation of the cutting temperature and surface quality during milling of unidirectional carbon fiber reinforced plastic

Experimental investigation of the cutting temperature and surface quality during milling of unidirectional carbon fiber reinforced plastic

Effect Of Additives On Cutting Temperature Of Glass Fibers Reinforced Polymers

A study of rock cutting with point attack picks

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