Estimation of Cutting Conditions in Precision Micromachining of CuNi Alloys of Varying Composition

Childs, T.H.C.; Tyler, Chris; Evans, C. J.; Schmitz, Tony L.; Paul, Ed; Browy, Eric C.

doi:10.1016/j.procir.2014.03.020

Cited by 4 publications

(3 citation statements)

References 8 publications

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“…7 Although the FTS and the advanced machine tool technologies have been well developed to realize a nanometric or even subnanometric positioning resolution for the diamond cutting tool with respect to the workpiece surface, 8 the form accuracies of the fabricated surfaces are influenced by a number of factors in geometrical, mechanical and chemical aspects. [9][10][11] The measurement of the surface form of the fabricated workpiece is thus an important issue for assurance of the fabrication accuracy. It is also expected to carry out the surface form metrology on the machine tool without removing the workpiece from the machine for improving the measurement accuracy and efficiency.…”

Section: Introductionmentioning

confidence: 99%

Molecular dynamics simulation of elastic–plastic deformation associated with tool–workpiece contact in force sensor–integrated fast tool servo

Cai

Chen

Shimizu

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part B:

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The tool–workpiece interactions when a single-point diamond cutting tool with specific tool edge geometry is made to contact with a copper workpiece are evaluated by the molecular dynamics simulations under different temperatures, boundary conditions and model sizes for ultra-precision microcutting and in-process surface form measurement based on a force sensor–integrated fast tool servo. It is confirmed that the proposed multi-relaxation time method is effective to stabilize the workpiece molecular dynamics model over a wide temperature range up to the room temperature under which a practical microcutting and on-machine surface form metrology process are conducted. The boundary condition and model size of the molecular dynamics model are then optimized to make reliable and cost-effective simulations for evaluation of the elastic–plastic transition contact depth and the corresponding contact force when a diamond tool with a practical edge sharpness of up to 30 nm is employed for microcutting and on-machine surface form metrology.

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Section: Introductionmentioning

confidence: 99%

Molecular dynamics simulation of elastic–plastic deformation associated with tool–workpiece contact in force sensor–integrated fast tool servo

Cai

Chen

Shimizu

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part B:

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“…• A utilização da técnica de MQL não se mostrou efetiva na redução da formação de rebarbas. Childs et al (2014) verificou uma redução da força de corte para o processo de micro-fresamento pelo mesmo método, porém a quantidade de material gasto não era viável economicamente para testes futuros.…”

Section: Formação De Rebarbaunclassified

“…Resultados do torque analisados são demonstrados naFig. 5.19.Os valores de torque, geralmente, são os menores quando aplicado como fluido de corte o óleo sintético, semelhante ao trabalho proposto porChilds et al (2014). O óleo sintético age como um isolante térmico entre a superfície da peça e o ambiente, fazendo com que o calor acumulado pela ferramenta seja utilizado no processo de corte, facilitando o cisalhamento do material.…”

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Influência da utilização do fluido de corte com adição de grafeno na temperatura de usinagem e formação de rebarba no processo de micro fresamento

Cunha¹

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As time passed, humanity needed the development of new materials used in various activities. High strength materials such as titanium and Inconel for example, had been studied because they are widely used for implants in biomedicine, as well as their use in aerospace and automotive industries. Because of its thermal and mechanical properties, these materials are considered difficult to machine, promoting a rapid wear of cutting tools, primarily caused by the high temperatures in machining. With the development of new materials has emerged the need of developing new manufacturing processes. One of today's innovative processes is the micro-manufacturing. Being a process with a defined cutting tool geometry, burr formation is a constant and undesirable phenomenon formed during the machininig process. Being detrimental to the manufacturing process, overspending deburring operations are constantly employed leading to increase the aggregate cost to the manufactured material. Assembly components are also impaired if there is no control of the burr, with consequences including the disposal of components due to the occurence of this phenomenon. This paper presents the study of micro-milling Inconel 718, investigating influential parameters in the formation of burrs in order to minimize the occurrence of this phenomenon. Different feed rates per tooth and cutting speed are evaluated, and different cutting fluids with different methods of applying the fluid. Adding graphene to cutting fluids was considered as a variable to be investigated, which is considered an excellent solid lubricant, in addition to increasing the thermal conductivity of the cooling solution (AZIMI; MOZAF-FARI, 2015). The micro-milling temperature was evaluated in the present work. It was observed a new phenomenon that causes the machined surface temperature decreases below room temperature when using the solution water + oil. This phenomenon is explained in further chapters. In order to unravel this phenomenon, a new test was proposed and, from this test, it can be concluded, comparatively, which cutting fluid has a better cooling property. Using cutting fluid with different thermal properties has shown influence when analyzing burr formation and reducing machining temperature.

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Tool Temperatures and Wear in Micro-machining Cu-Ni Alloys with Diamond Tools: Models, Simulations and Experiments

et al. 2015

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Estimation of Cutting Conditions in Precision Micromachining of CuNi Alloys of Varying Composition

Cited by 4 publications

References 8 publications

Molecular dynamics simulation of elastic–plastic deformation associated with tool–workpiece contact in force sensor–integrated fast tool servo

Molecular dynamics simulation of elastic–plastic deformation associated with tool–workpiece contact in force sensor–integrated fast tool servo

Influência da utilização do fluido de corte com adição de grafeno na temperatura de usinagem e formação de rebarba no processo de micro fresamento

Tool Temperatures and Wear in Micro-machining Cu-Ni Alloys with Diamond Tools: Models, Simulations and Experiments

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