Quasi-Stationary Measurements of Lignamon Thermal Properties

Troppová, Eva; Tippner, Jan; Hrčka, Richard; Halachan, Pavol

doi:10.15376/biores.8.4.6288-6296

Cited by 8 publications

(5 citation statements)

References 9 publications

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“…Part of the mechanical energy consumed during cutting and milling is changed into thermal energy due to friction. The thermal conductivity of wood is low, unlike metals [17][18][19][20]. Therefore, most of the heat generated during milling is transferred to the tool that results in its increased temperature.…”

Section: Introductionmentioning

confidence: 99%

Methodology of Temperature Monitoring in the Process of CNC Machining of Solid Wood

et al. 2018

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The issue of the change in tool temperature as a result of the machining process is presented in this paper. The aim of the paper is to put forward a proposal and subsequently to verify the methodology of temperature monitoring in the process of computer numerical control (CNC) machining in real time. Subsequently, the data can be used in the process of adaptive machine-tool control. Experiments were used to determine whether the research method is appropriate. Oak, beech and spruce wood turning blanks with the thickness of 20 mm were machined using a 5-axis CNC machining centre. A temperature change observation resulting from the changes in parameters of the removed layer was used to test whether the research method is relevant. Parameters of the removed layer were affected by the changes in feed rate in the range from 1 ÷ 5 m·min−1 in the removed layer (1–5 mm) or in wood species used in the experiment. As emerges from the proposed methodology, it is possible to monitor the changes in tool temperature responding to minimal changes in technological parameters on a relatively small size of a milled surface quite accurately. Sensitivity to given changes in technological parameters as well as the importance of the methodology was proven.

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Section: Introductionmentioning

confidence: 99%

Methodology of Temperature Monitoring in the Process of CNC Machining of Solid Wood

et al. 2018

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“…Unlike metals, the thermal conductivity of wood is low. Therefore, most of the heat generated during milling is transferred to the tool, which leads to its increased temperature [20][21][22]. The influence of the temperature of the tool during the cutting process on the service life of the tool was dealt with by many authors who discovered the influence of several parameters of the machining process, the properties of the tool, and the material being machined.…”

Section: Introductionmentioning

confidence: 99%

Advisability-Selected Parameters of Woodworking with a CNC Machine as a Tool for Adaptive Control of the Cutting Process

Kminiak

Němec

Igaz

et al. 2023

Forests

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The operation of CNC machining centers, despite their technological progress, can still be affected by undesirable events associated with the technological parameters of their operation. The minimization of these risks can be achieved via their adaptive control in the process of operation. Several input parameters for adaptive control are still the subject of research. The work aimed to find out the influence of the change in feed speed, revolutions, and radial depth of cut on the noise and temperature of the tool during the milling of wood-based composite material particleboard. At the same time, it was evaluated whether it is possible to use the measured values of these parameters in the future in the process of an adaptive control of the CNC machine with the minimization of their negative influence. The methods of measuring these parameters were chosen based on valid legislation and previous research. The results of the research show that all parameters influence both the noise and temperature of the tool, while the rate of the radial depth of cut has the greatest influence on the increase in temperature, and the noise is most affected by the revolutions. The effect of temperature during woodworking can also be characterized in terms of the potential long-term wear of the cutting tool. The setting of optimization algorithms of monitored parameters in the adaptive control of the CNC machining center will be the subject of further research.

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“…e results are in compliance with those gathered in works of other authors. e authors [17,18] investigating properties of medium-density fiberboards dealt with the quasi-dynamic method too. e research of the authors [19] was aimed at thermal conductivity and thermal diffusivity of wood.…”

Section: Introductionmentioning

confidence: 99%

Applying the EDPS Method to the Research into Thermophysical Properties of Solid Wood of Coniferous Trees

Krišťák

Igaz

Ružiak

2019

Advances in Materials Science and Engineering

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e results of using the EDPS (extended dynamic plane source) method to determine thermophysical properties of solid wood of coniferous trees growing in Slovakia with 0% and 12% equilibrium moisture content are presented in the paper. Solid wood of two different tree species: Norway spruce (Picea abies L.) and Scots pine (Pinus sylvestris L.) was used in the research. e research was carried out independently in three anatomical planes. Coefficients of thermal conductivity, thermal diffusivity, and specific heat capacity were determined following the research. Comparing the research results to the values determined by other authors and already published models to calculate individual parameters, the fact that the data gathered using the EDPS method can be accepted in case of all studied thermophysical properties can be stated.

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Quasi-Stationary Measurements of Lignamon Thermal Properties

Cited by 8 publications

References 9 publications

Methodology of Temperature Monitoring in the Process of CNC Machining of Solid Wood

Methodology of Temperature Monitoring in the Process of CNC Machining of Solid Wood

Advisability-Selected Parameters of Woodworking with a CNC Machine as a Tool for Adaptive Control of the Cutting Process

Applying the EDPS Method to the Research into Thermophysical Properties of Solid Wood of Coniferous Trees

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