Temat: tool temperature - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Control of tool temperature using neural network for machining materials with low thermal conductivity
Autorzy:: Soe, Y. H.
Tanabe, I.
Iyama, T.
Abe, Y.
Powiązania:: https://bibliotekanauki.pl/articles/99454.pdf
Data publikacji:: 2010
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: titanium alloy
nickel alloy
neural network
tool
tool temperature
Opis:: Recently titanium and nickel alloys have become pre-eminent for aeronautic and astronautic parts. Since these cutting and becomes severely demaged. It is important to control cutting tool temperature. In this paper,the control system of tool tip temperature using inverse analysis of neural network for machining these materials was developed and evaluated. The neural network between cutting conditions and tool temperature was firstly created by a set of teaching data. Then, a mathematical model using algebra was developed. Cutting speed was selected as parameter to be controlled in reducing tool temperature. The relationship between the optimum cutting speed and cutting time was calculated with the inverse analysis of neural network by pre-reading of NC program before cutting. The tool temperature can be maintained at the desired value. The developed system is evaluated by the expaeriments using the turning process and workpiece of Ti6Al4V. From the results, it is concluded that; (1) Tool tip temperature can be controlled by using the proposed inverse analysis of the neural network, (2) CThe cutting tool life can be maintained by this method, for cutting materials with low thermal conductivity.
Źródło:: Journal of Machine Engineering; 2010, 10, 3; 78-89
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Tool technology to reduce cutting heat generation and its influences
Autorzy:: Soe, Y. H.
Tanabe, I.
Iyama, T.
Hoang, T. B.
Powiązania:: https://bibliotekanauki.pl/articles/99936.pdf
Data publikacji:: 2010
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: tool temperature
tool life
tool material heat generation
frictional coefficient
Opis:: Recently, the use of hard materials has increased for product quality and safety reasons. Consequently, the cutting conditions for these materials become severe resulting in shorter tool life due to higher cutting temperature. In this paper, tool technology to reduce heat generation and its influences during cutting is investigated and evaluated experimentally. The approach for reducing cutting heat generation is considered by changing the tool geometry and reducing the frictiona coefficient between tool and chip. The approach for reducing influence of the generated heat is application of a therma insulator (coating) on the tool material having high thermal conductivity and heat-resistance. The turning process is used in the experiments. The thermal influences are made clear by each experimental parameter and then, the optimum tool parameters were considered from experimental results. It is concluded that; (1) When rake angle was 15 degree, temperature rise on the tool was smallest. (2) Temperature rise on the tools coated with TiAlN or DLC (Diamond Like Carbon) were reduced from 20 % to 30 %. (3) Several tool materials were quantitatively evaluated by consideration of the thermal conductivity, as well as thermal dependency of their hardness.
Źródło:: Journal of Machine Engineering; 2010, 10, 3; 5-16
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Determining the emissivity at the tool-chip interface during S235JR steel turning
Autorzy:: Molenda, J.
Charchalis, A.
Powiązania:: https://bibliotekanauki.pl/articles/242890.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: turning
infrared measurement
tool-chip interface temperature
emissivity
Opis:: Temperature on the chip-tool interface is important parameters in the analysis and control of turning process. Due to the high shear and friction, energies dissipated during a machining operation the temperature in the primary and secondary shear zones are usually very high; hence, affect the shear deformation and tool wear. In a single point cutting, heat is generated at three different zones i.e. primary shear zone, chip tool interface and the tool-workpiece interface. The primary shear zone temperature affects the mechanical properties of the work piece – chip material and temperatures at tool-chip and tool-work piece interfaces influence tool wear at tool face and flank respectively. Total tool wear rate and crater wear on the rake face are strongly influenced by the temperature at chip-tool interface. Therefore, it is desirable to determine the temperatures of the tool and chip interface to analyse or control the process. To measure the temperature at the tool-chip interface many experimental methods have been developed over the past century. Since at the interface there is a moving contact between the tool and chip in this work, authors propose infrared method for temperature measuring. To assure possibly high accurate of noncontact temperature measurement there is a need to keep in mind several factors, including determining appropriate value of emissivity. In this work, authors present results of experimental determining emissivity value of tool-chip interface. As initial value, emissivity of polished steel was taken.
Źródło:: Journal of KONES; 2015, 22, 2; 149-154
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: A simplistic regression-based genetic algorithm optimization of tool-work interface temperature
Autorzy:: Utkarsh
Kumar, Saumya
Kumar, Saaransh
Kiran, G. Uday
Mukhopadhyay, Arkadeb
Barman, Manik
Powiązania:: https://bibliotekanauki.pl/articles/38884187.pdf
Data publikacji:: 2022
Wydawca:: Instytut Podstawowych Problemów Techniki PAN
Tematy:: turning
tool-work thermocouple
cutting temperature
ANOVA
Opis:: This work aims to investigate the average tool-work interface temperature for the HSS tool and AISI 1040 steel pair. A tool-work thermocouple is proposed for the measurement of temperature because of its simple construction in addition to the low cost. The machining process of AISI 1040 steel is considered due to its extensive application, including industry usage. The changes in cutting temperature are studied for combinations of cutting speed, feed and the depth of cut during turning operation. The orthogonal array L₉ by Taguchi is adopted for designing the experiments within a restricted set of runs. The average cutting temperature shows an increasing curve with functions of speed versus depth of cut and speed versus feed. But no clear trend is observed for a combination of feed versus depth of cut. A second-order regression equation with reasonable accuracy (R² = 0.99) is fitted using the data. Analysis of variance (ANOVA) reveals the highest contribution from cutting speed, which influences average temperature at the interface of tool and work. Further, the genetic algorithm predicts an optimal combination of parameters, which is 82.542 m/min cutting speed, 0.276 mm/rev feed rate and 0.2 mm depth.
Źródło:: Engineering Transactions; 2022, 70, 2; 141-156
0867-888X
Pojawia się w:: Engineering Transactions
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Thermal model of the spindle drive structure
Autorzy:: Winiarski, Z.
Kowal, Z.
Kwaśny, W.
Ha, J.-Y.
Powiązania:: https://bibliotekanauki.pl/articles/99430.pdf
Data publikacji:: 2010
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: machine tool
spindle unit temperature
thermal deformations
model
Opis:: A computation system dedicated for machine tool spindle drives is presented which integrates a FDM model with a FEM model. Modelling of heat exchange through coolers are discussed, as well as modelling of heat exchange between cooling-lubricating oil and gear transmissions, shafts and headstock walls. In modelling of heat exchange inside headstock, the use of additional elements - type "Fluid" and "Air" - is proposed. Sample modelling results are presented concerning a headstock from a drilling-milling machine tool for machining with high loads and are compared with experimental data.
Źródło:: Journal of Machine Engineering; 2010, 10, 4; 41-52
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Reductıon of thermal tensıons and temperatures formed ın the trıbonodes and surfaces of the equıpment and tools used ın well workover and restoratıon works
Zmniejszenie naprężeń termicznych i temperatur wytwarzanych w węzłach tarcia oraz powierzchniach urządzeń i narzędzi używanych do rekonstrukcji i renowacji odwiertów
Autorzy:: Mustafayev, Amir G.
Nasirov, Chingiz R.
Powiązania:: https://bibliotekanauki.pl/articles/31348242.pdf
Data publikacji:: 2023
Wydawca:: Instytut Nafty i Gazu - Państwowy Instytut Badawczy
Tematy:: temperature
cutting tool
destructive tool
metal
rock
temperatura
narzędzie tnące
narzędzie niszczące
skała
Opis:: The maintenance of equipment and tools used in the workover of oil and gas wells depends on keeping them in good working condition, maintaining the reliability, strength, and temperature endurance of the tool. To restore wells after an accident and bring them back into operation, it is necessary to speed up the drilling and repair work by choosing the right repair equipment and following the existing rules and regulatory documents. The cutting elements of tools working under high pressure and loads are deformed, a tense situation is created in the cutting – a destruction zone and high temperatures (1000–1200°C) occur because of corrosion in the triboknots. The stress-deformation state in the cutting-destruction zone causes the formation of microcracks in the working area of the tool. Microcracks grow after a certain period. Cutting elements are quickly worn, in some cases break and fail quickly. Such cases affect the structural composition of the cutting elements, an increase in temperatures; as a result, riveting occurs. In order to keep the equipment and tools used in the repair in normal working condition, adjusting the mode parameters is one of the important requirements, in addition to taking special care of them. Optimum results obtained in repair and restoration depend on the efficiency of the cutting-destructive tool, longevity, material selection, construction manufacturing technologies, tools that meet modern requirements, dimensions, weight, and internal condition of the well being restored. It is necessary to keep the heat generated in the moving parts of the tool at the required level for the safe performance of restoration work. The thermal regime of cutting and rock-destroying tools depends on the physical-mechanical properties of the objects subjected to destruction, and the effect of thermomechanical stresses generated on the contact surfaces of the tool and the amount of heat released from the working surface. Studying the problems related to heat issues will ensure the temperature tolerance of not only the repair equipment, but also the equipment and tools used in other areas of the oil-field industry.
Utrzymanie urządzeń i narzędzi używanych w rekonstrukcjach odwiertów ropy i gazu zależy od zachowania ich w stanie gotowości do pracy, niezawodności, wytrzymałości oraz trwałości temperaturowej narzędzia. Aby przywrócić odpowiedni stan odwiertów po awarii oraz ponownie rozpocząć ich eksploatację trzeba przyspieszyć prace wiertnicze i naprawy poprzez wybranie właściwych urządzeń naprawczych oraz przestrzeganie istniejących przepisów i dokumentów regulacyjnych. Elementy tnące narzędzi pracujących pod wysokim ciśnieniem i obciążeniami ulegają deformacji, wytwarza się sytuacja naprężenia w strefie tnąco-niszczącej i występują wysokie temperatury (1000–1200°C) w wyniku korozji w węzłach tarcia. Stan naprężenie-odkształcenie w strefie tnąco- -niszczącej powoduje tworzenie mikropęknięć w obszarze roboczym narzędzia. Mikropęknięcia propagują po pewnym czasie. Elementy tnące szybko się zużywają, w niektórych przypadkach szybko pękają i ulegają awarii. Takie przypadki wpływają na skład strukturalny elementów tnących, wzrost temperatury i w rezultacie następuje unieruchomienie. Aby utrzymywać urządzenia i narzędzia używane przy naprawie w normalnych warunkach roboczych, jednym z najważniejszych wymogów jest dostosowanie parametrów trybu pracy, oprócz objęcia ich specjalną uwagą. Dobre wyniki uzyskane w robotach naprawczych i renowacyjnych zależą od sprawności narzędzia tnąco-niszczącego, trwałości, doboru materiałów, technologii produkcji konstrukcji, narzędzia spełniającego nowoczesne wymagania, jego wymiarów, wagi oraz stanu wewnętrznego odwiertu podlegającego renowacji. Dla bezpiecznego wykonania prac renowacyjnych konieczne jest utrzymanie ciepła generowanego w częściach ruchomych narzędzia na wymaganym poziomie. Reżim cieplny narzędzi tnących i niszczących skałę zależy od właściwości fizyko-mechanicznych obiektów podlegających niszczeniu i efektu naprężeń termomechanicznych generowanych na powierzchniach kontaktowych narzędzia oraz od ilości ciepła uwolnionej z powierzchni roboczej. Badanie problemów związanych z zagadnieniami ciepła pozwoli na zapewnienie tolerancji temperaturowej nie tylko urządzenia naprawczego, ale również urządzeń i narzędzi używanych w innych dziedzinach przemysłu złóż ropy.
Źródło:: Nafta-Gaz; 2023, 79, 10; 661-669
0867-8871
Pojawia się w:: Nafta-Gaz
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Numerical Simulations for Bobbin Tool Friction Stir Welding of Aluminum 6082-T6
Autorzy:: Hamilton, C.
Dymek, S.
Węglowska, A.
Pietras, A.
Powiązania:: https://bibliotekanauki.pl/articles/356155.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: friction stir welding
bobbin tool
aluminum
simulation
temperature
Opis:: Aluminum 6082-T6 panels were joined by friction stir welding utilizing a bobbin tool. A thermal simulation of the process was developed based upon machine torque and the temperature dependent yield stress utilizing a slip factor and an assumed coefficie nt of friction. The torque-based approach was compared to another simulation established on the shear layer methodology (SLM), which does not require the slip factor or coefficient of friction as model inputs. The SLM simulation, however, only models hea t generation from the leading edges of the tool. Ultimately, the two approaches yielded matching temperature predictions as both methodologies predicted the same overall total heat generation from the tool. A modified shear layer approach is proposed that adopts the flexibility and convenience of the shear layer method, yet models heat generation from all tool/workpiece interfaces.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 3; 1115-1123
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Multiobjective Performance Investigation of CNT Coated HSS Tool Under the Response Surface Methodology Platform
Autorzy:: Chandru, Manivannan
Selladurai, Velappan
Venkatesh, Chenrayan
Powiązania:: https://bibliotekanauki.pl/articles/2049740.pdf
Data publikacji:: 2021
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: carbon nanotube
RSM
cutting forces
cutting tooltip temperature
tool wear
Opis:: The present research employs the statistical tool of response surface methodology (RSM) to evaluate the machining characteristics of carbon nanotubes (CNTs) coated high-speed steel (HSS) tools. The methodology used for depositing carbon nanotubes was Plasma-Enhanced Chemical Vapor Deposition (PECVD). Cutting speed, thickness of cut, and feed rate were chosen as machining factors, and cutting forces, cutting tooltip temperature, tool wear, and surface roughness were included as machining responses. Three-level of cutting conditions were followed. The face-centered, Central Composite Design (CCD) was followed to conduct twenty number of experiments. The speed of cutting and rate of feed have been identified as the most influential variables over the responses considered, followed by the thickness of cut. The model reveals the optimized level of cutting parameters to achieve the required objectives. The confirmation experiments were also carried out to validate the acceptable degree of variations between the experimental results and the predicted one.
Źródło:: Archives of Metallurgy and Materials; 2021, 66, 2; 627-635
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Development on AI optimizing technology of NC program using tool free-cutting temperature for turning
Autorzy:: Tanabe, Ikuo
Isobe, Hiromi
Powiązania:: https://bibliotekanauki.pl/articles/2212054.pdf
Data publikacji:: 2023
Wydawca:: Wrocławska Rada Federacji Stowarzyszeń Naukowo-Technicznych
Tematy:: NC program
correction
free-cutting temperature
high productivity
tool condition
Opis:: In recent years, manufacturing must not only focus on high precision and productivity, but also on saving energy, resources and the environment. At the same time, there are increasing demands for high quality, high grade, wear resistance, heat-resisting property and high rigidity in machining workpieces. Therefore, for example, when creating NC programmes for machining difficult-to-machine materials such as titanium alloys and nickel alloys used in the aerospace industry, it has been very difficult to determine their optimum cutting conditions and create highly productive NC programmes due to lack of experience. Therefore, an AI optimizing technology of NC program using tool free-cutting temperatures for turning was developed and evaluated. The turning was used for this research and neural networks were used for AI optimizing. The algorithm for optimizing NC program using tool free-cutting temperature was firstly developed. Then the AI optimizing program for NC program was developed by C programming language. Previous NC program can rewrite for optimum condition by using the AI optimizing program. The proposed AI optimizing technology of NC program was evaluated by the several experiments. It is concluded from the results that; (1) The AI optimizing program for NC programmes using tool free-cutting temperatures in turning was developed, (2) The developed program was very useful for high productivity, long tool life and environmentally friendly.
Źródło:: Journal of Machine Engineering; 2023, 23, 1; 57--70
1895-7595
2391-8071
Pojawia się w:: Journal of Machine Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Effects of Welding Parameters on FSSW: Experimental and Numerical Study
Autorzy:: Merzoug, M.
Boulenouar, A.
Bouchouicha, B.
Serrier, M.
Mazari, M.
Powiązania:: https://bibliotekanauki.pl/articles/355978.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: FSSW
penetration
rotation of the tool
temperature
design of experiments
Opis:: In this paper, the Aluminum A6060-T5 plates of thickness 2 mm was friction stir spot welded (FSSW), and the effects of welding parameters (rotation speed, plunge speed and distance from the center of pin) on the temperature variation of the joints were investigated. The experimental design method is used to investigate the effects of welding parameters in order to achieve an optimization of the FSSW process. This optimization allows the development of experimental results and may help to better understand the complexity of the phenomena resulting from contact parts/tool during the stirring process.
Źródło:: Archives of Metallurgy and Materials; 2018, 63, 1; 247-256
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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