scholarly journals Avaliação do consumo de energia elétrica e desgaste de ferramenta durante o processo de fresamento sobre diferentes trajetórias

2020 ◽  
Vol 16 (4) ◽  
Author(s):  
Cassiano Rodrigues Moura ◽  
Giovani Conrado Carlini ◽  
Cristiano Da Silva
Keyword(s):  

O contexto internacional, no âmbito da eficiência energética, tem se preocupado fortemente com a demanda futura de energia da sociedade brasileira e mundial. Diante disso esta pesquisa busca realizar uma avaliação do consumo de energia elétrica e do desgaste da ferramenta durante o processo de fresamento, que se trata de um dos processos de fabricação mais utilizados ultimamente, este busca dar forma as peças e se utiliza de energia elétrica como fonte principal de trabalho. Foram realizados estudos do processo produtivo baseados na variação da trajetória de usinagem sobre o desgaste de flanco (VBmax) e consumo energético no processo de fresamento do aço AISI P20. Utilizou-se como ferramenta de corte uma fresa de topo inteiriça em metal duro com revestimento de AlCrN, com quatro arestas de corte, possuindo diâmetro de corte de 10mm e comprimento útil de corte de 22 mm. Os ensaios de fresamento foram realizados com parâmetros  fixos  de  velocidade  de  avanço  (Vf)  de  2000  mm/min,  profundidade  de  corte  axial  (ap)  de  3 mm, profundidade de corte radial (ae) de 2 mm e velocidade de corte (vc) de 200 m/min com movimento de corte concordante e lubrificação por solução miscível em água. As usinagens foram realizadas utilizando três tipos de trajetórias diferentes fornecidas pelo software EdgeCAM: Spiral, Waveform e Laceform. Para a coleta de consumo de energia elétrica utilizou-se um analisador de qualidade de energia, onde foram coletados dados de potência a cada 200 ms durante as usinagens. Os resultados mostraram que houve diferenças significativas nos tempos de usinagem total, o desgaste de flanco se diferenciou de forma moderada e linear entre as réplicas, contudo, a trajetória com melhor comportamento médio no desgaste foi a Waveform.

Author(s):  
Étory Madrilles Arruda ◽  
João Roberto Ferreira ◽  
Guilherme Brandão ◽  
Lincoln Brandão
Keyword(s):  

Author(s):  
Diego Russo ◽  
Gorka Urbicain ◽  
Antonio J. Sánchez Egea ◽  
Alejandro Simoncelli ◽  
Daniel Martinez Krahmer

2014 ◽  
Vol 590 ◽  
pp. 294-298
Author(s):  
Pichai Janmanee ◽  
Somchai Wonthaisong ◽  
Dollathum Araganont

In this study, effect of machining parameters and wear mechanism in milling process of mold steel AISI-P20 and AISI-1050, using 10 mm twin flute type end mill diameter. The experimental results found that characteristics of milling surfaces and wear of the mill end were directly influenced by changes of parameters for all test conditions. As a result, the quality of milling surfaces also changed. However, mould steels which had the good quality surface is AISI-1050, with roughnesses of 2.120 μm. Quality milling surfaces were milled by using the most suitable parameter feed rate of 45 mm/min, a spindle speed of 637 rpm and a cut depth level of 3 mm, for both grades. Moreover, material removal rate and duration of the milling process, the milling end mills affect wear of the edge in every bite when the feed rate is low, high speed and level depth of cut at least. It was found that limited wear less will affect the surface roughness (Ra) represents the good quality surface.


2008 ◽  
Author(s):  
Rodrigo Panosso Zeilmann ◽  
Alfredo Tomé ◽  
Anderson Antonioli ◽  
Diego Carlos Calza ◽  
Marcus Vinicius R. Braghini

Author(s):  
Fred L. Amorim

The AISI P20 steel is applied by the tooling industry as material for injection molding tools. It is known that the EDM process parameters technology installed at the majority of CNC EDM machines do not cover some of the necessities of the tooling industry. So, the customers are required to develop their own process parameters. In order to provide useful technical information to the industry an experimental investigation on the EDM of the AISI P20 tool steel under finish machining has been carried out. The material removal rate Vw, volumetric relative wear v and workpiece surface texture Ra, which are representative of EDM performance aspects, were analyzed against the variation of some of the most important EDM electrical variables using copper tool electrodes under positive and negative polarity. The EDM machine generator was also programmed to actuate under isoenergetic mode and relaxation mode. The results are discussed and some appropriate parameters for EDM of AISI P20 are suggested.


2014 ◽  
Vol 590 ◽  
pp. 244-248
Author(s):  
Jamkamon Kamonpong ◽  
Pichai Janmanee

This research aimed to study the machining efficiency of AISI P20 steel by Electrical Discharge Machining (EDM) using rod copper electrode to machining material by 50 mm depth of machining was mainly assessed from Materials Removal Rate (MRR) and Electrode Wear Ratio (EWR). From the experiment designed to use Taguchi technique of data analysis and suitable parameter prediction, the highest MRR was at on-time of 150 μs, off-time of 2 μs and electric current level was at 15 A or 0.25 A/mm2. Predicted value was at 19.2395 mm3/min which was equal to real experiment, showing Materials Removal Rate of 19.647 mm3/min (with error of 2.12 percent) .Moreover, it was found that gap would increase with the size of electrode and depth of machining caused by movement of particles removed from side surface of electrode, which cause micro sparks at the side of the material workpiece.


2019 ◽  
Vol 377 ◽  
pp. 124852 ◽  
Author(s):  
Changkyoo Park ◽  
Ahjin Sim ◽  
Sanghoon Ahn ◽  
Heeshin Kang ◽  
Eun-Joon Chun

2021 ◽  
Vol 405 ◽  
pp. 126515
Author(s):  
Ngangkham Devarani ◽  
Shrikrishna N. Joshi
Keyword(s):  

Author(s):  
Luis Christian Juiña ◽  
Emilio Josué Dávalos ◽  
Erika Pilataxi ◽  
Oscar Pillajo ◽  
Victor Cabrera ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document