The complementary graphical method used for profiling side mill for generation of helical surface

Baroiu, Nicușor; Berbinschi, Silviu; Teodor, Virgil; Susac, Florin; Oancea, Nicolae

doi:10.1088/1757-899x/227/1/012013

Cited by 11 publications

(8 citation statements)

References 11 publications

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“…The virtual pole method [6][7][8][9][10] is a variant of the Willis theorem application, which eliminates the need to write the equations of relative movements between the part and the tool. The method is based on the well-known observation that, at the contact point, the profiles in reciprocally enwrapping admit a common normal which passes through the gearing pole [3,9,10].…”

Section: The Principle Of the Virtual Pole Methodsmentioning

confidence: 99%

Corrective profiling method for tools that generate by enwrapping

Moroşanu

Teodor

Crăciun

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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There are known methods of corrective profiling of tools, which can predict the quality of parts generating obtained with cutting tools that process by enwrapping. The purpose of this profiling is to avoid errors caused by improper profiles of generating tools, using the so-called method of "reverse generation", which is based on the reproduction of the relative movement between the tool and the part, but in which the tool profile is known, and the goal is determining the part’s profile. The method presented in this paper uses the "virtual pole" method to profile the tools generating by enwrapping, by the rolling method and avoids the need to explicitly write the enveloping condition. This paper demonstrates the possibility of applying this method to the profiling of gear-shaped tools and presents the application of the proposed algorithm for a tool whose profile was determined directly by measurement. The numerical application developed demonstrates the ability of the method to simply solve the problems related to the corrective profiling of the tools that generate by rolling.

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Section: The Principle Of the Virtual Pole Methodsmentioning

confidence: 99%

Corrective profiling method for tools that generate by enwrapping

Moroşanu

Teodor

Crăciun

2022

IOP Conf. Ser.: Mater. Sci. Eng.

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“…Melatonin levels decrease with age, causing the skin's antioxidant capacity to decrease ( 50 , 73 , 74 ). The decrease in cellular melatonin levels is associated with alteration of the clock genes that regulate cell circadian rhythm ( 75-77 ). Exposure of the skin to solar radiation intensifies oxidative stress ( 77 ).…”

Section: Melatonin and Bateman Purpuramentioning

confidence: 99%

“…An in vitro study reported that MT-1 receptor levels in human fibroblasts are variable with age and that temporary suppression of the melatonin receptor increases H 2 O 2 production and attenuates UV-induced DNA destruction in human skin fibroblast culture ( 50 ). Melatonin directly defends mitochondria by eliminating ROS and indirectly defends mitochondria by stabilizing the mitochondrial membrane potential and maintaining mitochondrial homeostasis in UV-exposed keratinocyte cultures ( 66 , 50 , 75 ).…”

Section: Melatonin and Bateman Purpuramentioning

confidence: 99%

Benefits and adverse events of melatonin use in the elderly (Review)

et al. 2022

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“…In spite of the fact that HSS drills are used in a percentage of only 11% of the total drilling, but also because they are commonly used on conventional machines, the still considerable share of HSS drills, especially of those with diameters between Ø6÷ Ø16mm, is significant and not to be neglected, which imposes new approaches on increasing their cutting capacity and analyzing the state of the processed surfaces [9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Prediction of Surface Roughness in Drilling of Polymers using a Geometrical Model and Artificial Neural Networks

Baroiu¹,

Georgiana-Alexandra²,

Teodor³

et al. 2020

Mater. Plast.

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Polymeric materials are synthetic macromolecular products, of which, by mechanical or thermal processing, objects of various shapes can be obtained, with wide uses in industry and commerce. This paper deals with the roughness of surfaces obtained during drilling of three polymeric materials: polyamide - PA6, polyacetal - POM-C and high density polyamide - HDPE 1000. In the experimental research was used a EMCO MILL 55 milling machine numerical controlled and HS steel helical drills with two straight cutting edges with the diameter of �8 mm and �10 mm, respectively. Experimental determinations consisted in drilling of the polymeric materials by modifying some parameters of the cutting regime, and determining the roughness of the surface of the holes machined, using the Mitutoyo Surftest SJ-210 rough meter. The purpose of the paper is to predict the roughness of the machined surfaces as one of the important surface quality indicators by using a geometrical model and an artificial neural network (ANN) methodology.

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The complementary graphical method used for profiling side mill for generation of helical surface

Cited by 11 publications

References 11 publications

Corrective profiling method for tools that generate by enwrapping

Corrective profiling method for tools that generate by enwrapping

Benefits and adverse events of melatonin use in the elderly (Review)

Prediction of Surface Roughness in Drilling of Polymers using a Geometrical Model and Artificial Neural Networks

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