Experimental evaluation of cutting force parameters applying mechanistic model in orthogonal milling

Coelho, Reginaldo Teixeira; Braghini, Aldo; Valente, C.M.O.; Medalha, Giuliano Cardozo

doi:10.1590/s1678-58782003000300005

Cited by 10 publications

(4 citation statements)

References 16 publications

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“…Theoretically, in usual machining operations, if a minimal contact force is maintained, the robot can complete its task in one or more ways. However, according to a few studies [15,16], some forces associated with the chip formation appear during the drilling process. It makes the process more difficult and uncertain, while limiting the use of ABB force control strategies.…”

Section: Force Control Conceptsmentioning

confidence: 99%

Analysis and implementation of a force control strategy for drilling operations with an industrial robot

Rosa

Feiteira

Lopes

et al. 2017

J Braz. Soc. Mech. Sci. Eng.

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In this paper, a theoretical and experimental study to evaluate the use of force control in drilling operations, based on an industrial robot, is presented. A force control strategy embedded in a commercial industrial robot, originally devoted to general machining tasks, is adapted to drilling operations. It is shown that satisfactory results can be achieved in standard industrial applications. Unwanted displacements can occur, resulting in dimensional uncertainty, especially in specimens with very small dimensions. Nevertheless, the implemented force control is able to avoid the risks of failure in the material, and to minimize the operating time in several industrial drilling processes.

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Section: Force Control Conceptsmentioning

confidence: 99%

Analysis and implementation of a force control strategy for drilling operations with an industrial robot

Rosa

Feiteira

Lopes

et al. 2017

J Braz. Soc. Mech. Sci. Eng.

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“…The condition assumes the friction force on the rake face is collinear to the chip velocity direction and shear force in the shear plane is collinear to the shear velocity direction. When the co-linearity conditions are satisfied the following equation must be met to find the chip flow angle 1 [6][7]:…”

Section: Oblique Cutting Analysismentioning

confidence: 99%

Development of predictive force models for oblique cutting of mild carbon steel (CS1030) incorporating tool flank wear

Ipilakyaa

2020

Journal of Mechanical and Energy Engineering

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Predictive force models for oblique metal cutting incorporating tool flank wear was carried out using a CNC lathe machine to turn mild carbon steel CS1030. The developed models are based on the fundamental mechanics of orthogonal cutting process, in which inclination angle is 0°. Workpieces were Cylindrical with wall thickness of 3mm and diameter of 100 mm. Cut thickness levels were 0.1, 0.17, 0.24 and 0.31 mm; cutting speeds were 100, 150 and 200 m/min; tool rake angle levels were −5, 0 and 5°. wearland sizes were selected as 0, 0.2, 0.4, 0.6 mm, where wearland size "0 mm" represents sharp tool. Results of the study indicate that tool flank wear has significant effect on oblique cutting forces. The oblique cutting forces were found to increase linearly with tool flank wear due to rubbing or ploughing forces in the wearland. The results also show that, the measured experimental oblique forces (power force, Fcm thrust force Ftm and rubbing force Frm) agreed with the predicted (power force Fc thrust force Ft,and rubbing force Fr) values under the corresponding cutting conditions. It is evident from the plots that the models give an excellent prediction of the cutting forces during oblique cutting.

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“…Cutting forces were recorded along the coordinate axes of the dynamometer. The orthogonal force signals along the coordinate axes were transformed to yield radial and tangential components via the following rotation matrix [10]…”

Section: Transformation Of Coordinate Axesmentioning

confidence: 99%

Micromachining characterization of anisotropic pyrolytic carbon

Bajpai

Salhotra

Singh

2011

Proceedings of the Institution of Mechanical Engineers, Part B:

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Engineered features on pyrolytic carbon (PyC) have been demonstrated as an approach to optimize flow haemodynamics of the bileaflet mechanical heart valve (BMHV). To realize passive flow control in a functional BMHV, micro/meso-scale engineered features are required to be machined on the PyC leaflet. Since PyC is very brittle and has a layered anisotropic structure, its machining characteristics are different from those of standard isotropic materials. The surface finish requirements in these implants are also very stringent. A comprehensive approach needs to be devised which can create three-dimensional features with desired surface quality and integrity. Very little work has been reported on machining/micromachining of PyC, so it is expected that the present study will create the manufacturing knowledge base to generate engineered surfaces in PyC bio-implants. A full factorial experimental design was used to investigate the effect of micromilling process parameters (spindle speed, feed rate, depth of cut, tool diameter) on the response variables. Experiments were conducted in the AB plane (parallel to the layers) and the C plane (normal to the layers) to capture the effect of anisotropy. The process responses studied were cutting forces, surface roughness, surface morphology, and chip morphology. The mean radial/tangential forces and the mean surface roughness values increased by approximately 140 per cent and 77 per cent, respectively, when the cutting plane was changed from AB to C.

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Experimental evaluation of cutting force parameters applying mechanistic model in orthogonal milling

Cited by 10 publications

References 16 publications

Analysis and implementation of a force control strategy for drilling operations with an industrial robot

Analysis and implementation of a force control strategy for drilling operations with an industrial robot

Development of predictive force models for oblique cutting of mild carbon steel (CS1030) incorporating tool flank wear

Micromachining characterization of anisotropic pyrolytic carbon

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