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Alisson Rocha Machado - One of the best experts on this subject based on the ideXlab platform.
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burr height minimization using the response surface methodology in milling of ph 13 8 mo stainless steel
The International Journal of Advanced Manufacturing Technology, 2016Co-Authors: Luiz Carlos Da Silva, Paulo Rosa Da Mota, Márcio Bacci Da Silva, Wisley Falco Sales, Alisson Rocha MachadoAbstract:Burrs formed during the machining process is considered a major problem in the manufacturing industry because they can impair mechanical assemblies, change the dimensions of the machined products, and compromise the physical integrity of the operators, among many other inconveniences. Therefore, Burrs should be avoided but if formed their dimensions should be minimized. In this work, the burr dimensions were investigated, and the cutting conditions that minimize them were determined using a central composite design (CCD) and response surface methodology (RSM) in face milling of PH 13-8 Mo stainless steel with coated carbide inserts. Burr formed on the workpiece exit edge and the behaviors of its height during the manipulation of the evaluated variables (tool exit angle from the workpiece, cutting speed, feed per tooth, axial depth of cut and average tool flank wear) were analyzed. The Burrs were indirectly measured, where replicas of the workpiece edges (with their Burrs) were produced with condensed silicone. The results showed that there is a considerable reduction in the burr height when lower exit angles and new cutting tools are used. The minimum number of Burrs is produced when using increasing feed per tooth and decreasing axial depth of cut. The cutting speed presented negligible influence on the height of the burr.
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study of burr height in face milling of ph 13 8 mo stainless steel transition from primary to secondary burr and benefits of deburring between passes
Cirp Journal of Manufacturing Science and Technology, 2015Co-Authors: Luiz Carlos Da Silva, Paulo Rosa Da Mota, Márcio Bacci Da Silva, Emmanuel O. Ezugwu, Alisson Rocha MachadoAbstract:Abstract Undesirable Burrs formed in virtually all machining processes are wastes that hinder the assembly of mechanical components, alter the dimensions of the machined products and are harmful to machine tool operators. They are present in both macro and micromachining and severely affect precision of the machined components. In order to make important decisions towards reduction or complete elimination of Burrs, it is essential to determine the size of the burr and its behavior when the cutting conditions are altered. This study involves face milling of PH 13-8 Mo stainless steel with coated carbide inserts and complement a recent work [1] that studied the influence of the cutting fluid application method, the cutting tool geometry and the radial depth of cut on burr dimensions. In the present work, the transition from primary to secondary burr and influence of the accumulated remnant burr between passes on the burr size were analyzed. The transition from primary burr to secondary burr depends considerably on the radial and axial depths of cut. Remnant burr height increases linearly as the number of passes increases.
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Study of burr height in face milling of PH 13-8 Mo stainless steel––Transition from primary to secondary burr and benefits of deburring between passes
Cirp Journal of Manufacturing Science and Technology, 2015Co-Authors: Luiz Carlos Da Silva, Paulo Rosa Da Mota, Márcio Bacci Da Silva, Emmanuel O. Ezugwu, Alisson Rocha MachadoAbstract:Abstract Undesirable Burrs formed in virtually all machining processes are wastes that hinder the assembly of mechanical components, alter the dimensions of the machined products and are harmful to machine tool operators. They are present in both macro and micromachining and severely affect precision of the machined components. In order to make important decisions towards reduction or complete elimination of Burrs, it is essential to determine the size of the burr and its behavior when the cutting conditions are altered. This study involves face milling of PH 13-8 Mo stainless steel with coated carbide inserts and complement a recent work [1] that studied the influence of the cutting fluid application method, the cutting tool geometry and the radial depth of cut on burr dimensions. In the present work, the transition from primary to secondary burr and influence of the accumulated remnant burr between passes on the burr size were analyzed. The transition from primary burr to secondary burr depends considerably on the radial and axial depths of cut. Remnant burr height increases linearly as the number of passes increases.
Luiz Carlos Da Silva - One of the best experts on this subject based on the ideXlab platform.
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burr height minimization using the response surface methodology in milling of ph 13 8 mo stainless steel
The International Journal of Advanced Manufacturing Technology, 2016Co-Authors: Luiz Carlos Da Silva, Paulo Rosa Da Mota, Márcio Bacci Da Silva, Wisley Falco Sales, Alisson Rocha MachadoAbstract:Burrs formed during the machining process is considered a major problem in the manufacturing industry because they can impair mechanical assemblies, change the dimensions of the machined products, and compromise the physical integrity of the operators, among many other inconveniences. Therefore, Burrs should be avoided but if formed their dimensions should be minimized. In this work, the burr dimensions were investigated, and the cutting conditions that minimize them were determined using a central composite design (CCD) and response surface methodology (RSM) in face milling of PH 13-8 Mo stainless steel with coated carbide inserts. Burr formed on the workpiece exit edge and the behaviors of its height during the manipulation of the evaluated variables (tool exit angle from the workpiece, cutting speed, feed per tooth, axial depth of cut and average tool flank wear) were analyzed. The Burrs were indirectly measured, where replicas of the workpiece edges (with their Burrs) were produced with condensed silicone. The results showed that there is a considerable reduction in the burr height when lower exit angles and new cutting tools are used. The minimum number of Burrs is produced when using increasing feed per tooth and decreasing axial depth of cut. The cutting speed presented negligible influence on the height of the burr.
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study of burr height in face milling of ph 13 8 mo stainless steel transition from primary to secondary burr and benefits of deburring between passes
Cirp Journal of Manufacturing Science and Technology, 2015Co-Authors: Luiz Carlos Da Silva, Paulo Rosa Da Mota, Márcio Bacci Da Silva, Emmanuel O. Ezugwu, Alisson Rocha MachadoAbstract:Abstract Undesirable Burrs formed in virtually all machining processes are wastes that hinder the assembly of mechanical components, alter the dimensions of the machined products and are harmful to machine tool operators. They are present in both macro and micromachining and severely affect precision of the machined components. In order to make important decisions towards reduction or complete elimination of Burrs, it is essential to determine the size of the burr and its behavior when the cutting conditions are altered. This study involves face milling of PH 13-8 Mo stainless steel with coated carbide inserts and complement a recent work [1] that studied the influence of the cutting fluid application method, the cutting tool geometry and the radial depth of cut on burr dimensions. In the present work, the transition from primary to secondary burr and influence of the accumulated remnant burr between passes on the burr size were analyzed. The transition from primary burr to secondary burr depends considerably on the radial and axial depths of cut. Remnant burr height increases linearly as the number of passes increases.
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Study of burr height in face milling of PH 13-8 Mo stainless steel––Transition from primary to secondary burr and benefits of deburring between passes
Cirp Journal of Manufacturing Science and Technology, 2015Co-Authors: Luiz Carlos Da Silva, Paulo Rosa Da Mota, Márcio Bacci Da Silva, Emmanuel O. Ezugwu, Alisson Rocha MachadoAbstract:Abstract Undesirable Burrs formed in virtually all machining processes are wastes that hinder the assembly of mechanical components, alter the dimensions of the machined products and are harmful to machine tool operators. They are present in both macro and micromachining and severely affect precision of the machined components. In order to make important decisions towards reduction or complete elimination of Burrs, it is essential to determine the size of the burr and its behavior when the cutting conditions are altered. This study involves face milling of PH 13-8 Mo stainless steel with coated carbide inserts and complement a recent work [1] that studied the influence of the cutting fluid application method, the cutting tool geometry and the radial depth of cut on burr dimensions. In the present work, the transition from primary to secondary burr and influence of the accumulated remnant burr between passes on the burr size were analyzed. The transition from primary burr to secondary burr depends considerably on the radial and axial depths of cut. Remnant burr height increases linearly as the number of passes increases.
Sung Lim Ko - One of the best experts on this subject based on the ideXlab platform.
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new abrasive deburring method using suction for micro Burrs at intersecting holes
Cirp Annals-manufacturing Technology, 2016Co-Authors: B C Kwon, Sung Lim KoAbstract:Abstract As industrial technology advances functionally, there is an increasing necessity to treat edges of products well to satisfy the required function. Specifically, Burrs inside products at intersecting holes are very difficult to remove because the accessibility of the burr location inside the product to tools is very limited. We propose a new deburring method called abrasive deburring. This method uses a pipe with a hole as a deburring tool to move water with an abrasive and a pump for suction. To determine the suitability of the proposed deburring method, abrasives with different sizes and specific gravities are used. The geometry of the tool and the operating conditions were specified using the following parameters: the diameter of the crossing hole, the diameter of the suction tool, the gap between the sample hole and the tool, the pressure of the pump, and the location of the hole of the tool. The suction-deburring method was very useful for removing micro Burrs formed at intersecting holes with an appropriate pump pressure, which is not as high as that in the water-jet or extrude-hone method. However, given the limited deburring force, the method is only applicable for removing micro Burrs; other Burrs are reduced to stable Burrs, which do not require removal from the product.
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Development of deburring tool for Burrs at intersecting holes
Journal of Materials Processing Technology, 2008Co-Authors: Sung Lim KoAbstract:Most recently manufactured automobile and hydraulic parts contain intersecting holes. However, there has been no efficient deburring method for burr at intersecting holes, which has been a significant machining challenge. An experiment was performed to analyze how deburring can be efficiently carried out at the intersecting hole. Most of the results were good on the flat exit surface using the usual deburring tool. But in the case of inclined exit surface and intersecting hole, deburring did not work so well. To simulate the surface at the intersecting holes, a deburring experiment on inclined exit surface was carried out. Because a majority of deburring tools have an edge for unidirectional rotation for deburring, the deburring operation was performed successfully only on some parts of the exit edges of holes in the case of inclined exit surface. Contrary to the flat surface and inclined exit surface, the intersecting hole has variations in terms of inclined angle around the hole with different burr heights. Therefore, most Burrs at intersecting holes are difficult to remove. An experiment was performed to compare the deburring capability of each tool, namely the burr-off tool and Beier tool. The burr-off tool is used for general Burrs that were formed on flat exit surfaces, whereas the Beier tool is a special equipment for high-speed deburring. According to the result, a new efficient deburring method as well as a new deburring tool design was proposed. Each parameter was analyzed to improve the deburring performance. Burr geometry was analyzed using the burr measurement system, which was separately developed.
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A model of burr formation in the feed direction in turning
International Journal of Machine Tools & Manufacture, 2006Co-Authors: Andrey Toropov, Sung Lim KoAbstract:Abstract This paper proposes a model of the burr formation mechanism when Burrs are formed in the feed direction during turning operation. Two cases have been considered in this study: continuous burr development, when the burr grows uninterruptedly; and discontinuous development, when the burr being formed is cut off and is renewed with each revolution of the workpiece. The model allows predicting burr height and thickness, and is able to simulate burr development. Experimental verification of the model was carried out during turning of aluminum alloy Al6061-T6. It was confirmed through the experiment that burr thickness can be predicted with considerable accuracy and that burr height can be determined with a maximum error of about 30%. The experiment also proved that the model is suitable for the description of burr development in both continuous and discontinuous cases of burr formation.
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Effective Deburring of Micro Burr Using Magnetic Abrasive Finishing Method
Key Engineering Materials, 2005Co-Authors: Jung Il Park, Sung Lim Ko, Y.h. Hanh, Yuri Mikhailovich BaronAbstract:Micro Burrs formed in micro parts are not subject to be removed by the conventional deburring method for marco parts. Magnetic abrasive deburring method which was proved to be effective for small Burrs are applied for deburring the micro burr in electric gun parts used in TV monitor. A specific magnetic inductor is designed and manufactured for this part. To improve the deburring performance, vibration table is used for increasing the relative velocity. To evaluate the deburring capability and surface finishing, edge shape, surface roughness and composition of surface material are measured precisely. It is verified the chemical composition of surface is not affected by the powder composition when the proper powder are used with coolant.
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Micro Deburring Technology Using Ultrasonic Vibration with Abrasive - eScholarship
2004Co-Authors: H Z Choi, Y J Choi, Sung Lim KoAbstract:Burrs have been defined as undesirable projections of material beyond the edge of a workpiece during machining. Burrs are created around the edge of workpiece due to plasticity during mechanical manufacturing process. Recently, because of miniaturization and increased precision of the machined parts, the size of Burrs has been also reduced and deburring became even more difficult. Generally, Burrs have been removed by method of physics and chemistry. There are a few publications in the area of applying ultrasonics to deburring. When ultrasonic vibration propagates in the liquid medium, a large number of bubbles are formed. These bubbles generate an extremely strong force, which removes Burrs. The object of this study is to analyze the effects of ultrasonic vibration, medium and the type of abrasive in deburring process. In this paper, we have examined such parameters of ultrasonic vibration as power, the distance between the ultrasonic horn and workpiece, deburring elapsed time, and the type of abrasive. The different abrasives were used in this experiment to examine how the properties of the abrasives affect ultrasonic deburring. It was found from the result that deburring with ultrasonic cavitation in medium is effective to micro burr.
Paulo Rosa Da Mota - One of the best experts on this subject based on the ideXlab platform.
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burr height minimization using the response surface methodology in milling of ph 13 8 mo stainless steel
The International Journal of Advanced Manufacturing Technology, 2016Co-Authors: Luiz Carlos Da Silva, Paulo Rosa Da Mota, Márcio Bacci Da Silva, Wisley Falco Sales, Alisson Rocha MachadoAbstract:Burrs formed during the machining process is considered a major problem in the manufacturing industry because they can impair mechanical assemblies, change the dimensions of the machined products, and compromise the physical integrity of the operators, among many other inconveniences. Therefore, Burrs should be avoided but if formed their dimensions should be minimized. In this work, the burr dimensions were investigated, and the cutting conditions that minimize them were determined using a central composite design (CCD) and response surface methodology (RSM) in face milling of PH 13-8 Mo stainless steel with coated carbide inserts. Burr formed on the workpiece exit edge and the behaviors of its height during the manipulation of the evaluated variables (tool exit angle from the workpiece, cutting speed, feed per tooth, axial depth of cut and average tool flank wear) were analyzed. The Burrs were indirectly measured, where replicas of the workpiece edges (with their Burrs) were produced with condensed silicone. The results showed that there is a considerable reduction in the burr height when lower exit angles and new cutting tools are used. The minimum number of Burrs is produced when using increasing feed per tooth and decreasing axial depth of cut. The cutting speed presented negligible influence on the height of the burr.
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study of burr height in face milling of ph 13 8 mo stainless steel transition from primary to secondary burr and benefits of deburring between passes
Cirp Journal of Manufacturing Science and Technology, 2015Co-Authors: Luiz Carlos Da Silva, Paulo Rosa Da Mota, Márcio Bacci Da Silva, Emmanuel O. Ezugwu, Alisson Rocha MachadoAbstract:Abstract Undesirable Burrs formed in virtually all machining processes are wastes that hinder the assembly of mechanical components, alter the dimensions of the machined products and are harmful to machine tool operators. They are present in both macro and micromachining and severely affect precision of the machined components. In order to make important decisions towards reduction or complete elimination of Burrs, it is essential to determine the size of the burr and its behavior when the cutting conditions are altered. This study involves face milling of PH 13-8 Mo stainless steel with coated carbide inserts and complement a recent work [1] that studied the influence of the cutting fluid application method, the cutting tool geometry and the radial depth of cut on burr dimensions. In the present work, the transition from primary to secondary burr and influence of the accumulated remnant burr between passes on the burr size were analyzed. The transition from primary burr to secondary burr depends considerably on the radial and axial depths of cut. Remnant burr height increases linearly as the number of passes increases.
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Study of burr height in face milling of PH 13-8 Mo stainless steel––Transition from primary to secondary burr and benefits of deburring between passes
Cirp Journal of Manufacturing Science and Technology, 2015Co-Authors: Luiz Carlos Da Silva, Paulo Rosa Da Mota, Márcio Bacci Da Silva, Emmanuel O. Ezugwu, Alisson Rocha MachadoAbstract:Abstract Undesirable Burrs formed in virtually all machining processes are wastes that hinder the assembly of mechanical components, alter the dimensions of the machined products and are harmful to machine tool operators. They are present in both macro and micromachining and severely affect precision of the machined components. In order to make important decisions towards reduction or complete elimination of Burrs, it is essential to determine the size of the burr and its behavior when the cutting conditions are altered. This study involves face milling of PH 13-8 Mo stainless steel with coated carbide inserts and complement a recent work [1] that studied the influence of the cutting fluid application method, the cutting tool geometry and the radial depth of cut on burr dimensions. In the present work, the transition from primary to secondary burr and influence of the accumulated remnant burr between passes on the burr size were analyzed. The transition from primary burr to secondary burr depends considerably on the radial and axial depths of cut. Remnant burr height increases linearly as the number of passes increases.
Márcio Bacci Da Silva - One of the best experts on this subject based on the ideXlab platform.
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burr height minimization using the response surface methodology in milling of ph 13 8 mo stainless steel
The International Journal of Advanced Manufacturing Technology, 2016Co-Authors: Luiz Carlos Da Silva, Paulo Rosa Da Mota, Márcio Bacci Da Silva, Wisley Falco Sales, Alisson Rocha MachadoAbstract:Burrs formed during the machining process is considered a major problem in the manufacturing industry because they can impair mechanical assemblies, change the dimensions of the machined products, and compromise the physical integrity of the operators, among many other inconveniences. Therefore, Burrs should be avoided but if formed their dimensions should be minimized. In this work, the burr dimensions were investigated, and the cutting conditions that minimize them were determined using a central composite design (CCD) and response surface methodology (RSM) in face milling of PH 13-8 Mo stainless steel with coated carbide inserts. Burr formed on the workpiece exit edge and the behaviors of its height during the manipulation of the evaluated variables (tool exit angle from the workpiece, cutting speed, feed per tooth, axial depth of cut and average tool flank wear) were analyzed. The Burrs were indirectly measured, where replicas of the workpiece edges (with their Burrs) were produced with condensed silicone. The results showed that there is a considerable reduction in the burr height when lower exit angles and new cutting tools are used. The minimum number of Burrs is produced when using increasing feed per tooth and decreasing axial depth of cut. The cutting speed presented negligible influence on the height of the burr.
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study of burr height in face milling of ph 13 8 mo stainless steel transition from primary to secondary burr and benefits of deburring between passes
Cirp Journal of Manufacturing Science and Technology, 2015Co-Authors: Luiz Carlos Da Silva, Paulo Rosa Da Mota, Márcio Bacci Da Silva, Emmanuel O. Ezugwu, Alisson Rocha MachadoAbstract:Abstract Undesirable Burrs formed in virtually all machining processes are wastes that hinder the assembly of mechanical components, alter the dimensions of the machined products and are harmful to machine tool operators. They are present in both macro and micromachining and severely affect precision of the machined components. In order to make important decisions towards reduction or complete elimination of Burrs, it is essential to determine the size of the burr and its behavior when the cutting conditions are altered. This study involves face milling of PH 13-8 Mo stainless steel with coated carbide inserts and complement a recent work [1] that studied the influence of the cutting fluid application method, the cutting tool geometry and the radial depth of cut on burr dimensions. In the present work, the transition from primary to secondary burr and influence of the accumulated remnant burr between passes on the burr size were analyzed. The transition from primary burr to secondary burr depends considerably on the radial and axial depths of cut. Remnant burr height increases linearly as the number of passes increases.
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Study of burr height in face milling of PH 13-8 Mo stainless steel––Transition from primary to secondary burr and benefits of deburring between passes
Cirp Journal of Manufacturing Science and Technology, 2015Co-Authors: Luiz Carlos Da Silva, Paulo Rosa Da Mota, Márcio Bacci Da Silva, Emmanuel O. Ezugwu, Alisson Rocha MachadoAbstract:Abstract Undesirable Burrs formed in virtually all machining processes are wastes that hinder the assembly of mechanical components, alter the dimensions of the machined products and are harmful to machine tool operators. They are present in both macro and micromachining and severely affect precision of the machined components. In order to make important decisions towards reduction or complete elimination of Burrs, it is essential to determine the size of the burr and its behavior when the cutting conditions are altered. This study involves face milling of PH 13-8 Mo stainless steel with coated carbide inserts and complement a recent work [1] that studied the influence of the cutting fluid application method, the cutting tool geometry and the radial depth of cut on burr dimensions. In the present work, the transition from primary to secondary burr and influence of the accumulated remnant burr between passes on the burr size were analyzed. The transition from primary burr to secondary burr depends considerably on the radial and axial depths of cut. Remnant burr height increases linearly as the number of passes increases.
