Grinding Monitoring
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Unplanned dilution back analysis in an underground mine using numerical models
Abstract In underground mines, stability problems can cause unplanned dilution, increasing the costs of mining operations, such as loading, transport, crushing and grinding. This is usually dealt with by simply increasing investments with support. However, the design geometry of stopes and drifts also has a great effect on a stope’s stability. The use of e
REM - International Engineering Journal. Publicado em: 2022
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2. Evaluation of different methods of cooling-lubrication in cylindrical grinding of advanced ceramic dip
The current work presents a study of alternative methods of cooling-lubrication for the external plunge grinding of advanced ceramics using diamond wheels. These two alternative methods, which are intended to reduce cutting fluid expenses, are commonly referred to as the optimized cooling-lubrication method and minimal quantity of lubrication (MQL). The tech
Mat. Res.. Publicado em: 30/09/2014
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3. Proposta de modernização em instalação industrial de moagem de escória
This paper presents a proposal for upgrading the mill slag industrial facility in a cement plant, with technology upgrade (retrofit) of the main components of that process, focused on implementation of an automation architecture with remote operation. Currently the installation of this mill still uses the technology of the sixties and is not automated, a sit
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/04/2012
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4. Determination of the relative position between grinding wheel and a cylindrical workpiece on a 7 axis grinding machine by acoustic emission
The contact between grinding wheel and workpiece in the grinding process is recognized by acoustic emission (AE). Two acoustic emission monitoring systems (MS) were integrated into a 3 axis CNC grinding machine. A laptop allows the signal acquisition and visualization. The acquired AE RMS signals from the contact between tool and workpiece are analyzed permi
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2012-03
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5. Avaliação de uma fábrica de ração para aves: instalações, processos e produto final / Evaluation of a feed mill for poultries: installation, process, and final product
The work of research aimed to characterize and analyze qualitatively and quantitatively a feed mill for poultries. For this, an initial study to evaluate the feed mill using the manual of Good Manufacture Practice of Feed and the international norm of quality management ISO 9000:2000. The results verified that the feed mill did not respond in full the mentio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/10/2010
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6. Monitoring of operations the rectification using sensors of fusion / Monitoramento de operações de retificação usando fusão de sensores
The present study deals with an experimental analysis of a monitoring system based on a sensor fusion strategy applied to a cylindrical grinding machine. It comprises a fusion of the power and acoustic emission signals and has as main goal to obtain the FAP (Fast Abrasive Power) using the method developed by Valente (2003). Initially, the power and acoustic
Publicado em: 2007
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7. Automatic system for thermal damage detection in manufacturing process with internet monitoring
This work involved the development of a smart system dedicated to surface burning detection in the grinding process through constant monitoring of the process by acoustic emission and electrical power signals. A program in Visual Basic® for Windows® was developed, which collects the signals through an analog-digital converter and further processes them usi
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2006-06
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8. In-process grinding monitoring through acoustic emission
This work aims to investigate the efficiency of digital signal processing tools of acoustic emission signals in order to detect thermal damages in grinding processes. To accomplish such a goal, an experimental work was carried out for 15 runs in a surface grinding machine operating with an aluminum oxide grinding wheel and ABNT 1045 Steel as work material. T
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2006-03
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9. The development of an open architecture control system for CBN high speed grinding
The aim of this project is the development of an open architecture controlling (OAC) system to be applied in the high speed grinding process using CBN tools. Besides other features, the system will allow a new monitoring and controlling strategy, by the adoption of open architecture CNC combined with multi-sensors, a PC and third-party software. The OAC syst
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2004-03
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10. Uma contribuição para o monitoramento de retificação cilindrica de mergulho / A contribution to cylindrical plunge grinding monitoring
The main goal of this work is to verify the feasibility of employing artificial neural networks to analyse signals from several sensors (acoustic emission, vibration and electric current) attached to the tailstock of a cylindrical plunge grinding machine in order to increase the accuracy of the automatic decision of the wheel dressing momento A second goal i
Publicado em: 1999
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11. Contribution to the study of hardened steel turning / Uma contribuição ao estudo do processo de torneamento de aços endurecidos
The main goal of this work is to study the feasibility of turning hardened steels using a lathe with a conventional mechanical design (without hydrostatic bearings), aiming to replace grinding operations. For this purpose, two kinds of quenched and tempered 52100 steel workpieces were machined, with average hardness of 60 HRc, using PCBN (65% of CBN) and mix
Publicado em: 1998
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12. Redução do ciclo de retificação cilindrica de mergulho com auxilio de emissão acustica
The spark out stage occupies a very large percentage of the whole plunge grinding cycle. So. to reduce the grinding cycle is very interesting to have the shortest spark out stage. To get there, i.e., to get the shortest spark out stage, this work uses the accelerated spark out cycle (proposed in the literature), implemented with the help of the monitoring of
Publicado em: 1994