The Experts below are selected from a list of 474 Experts worldwide ranked by ideXlab platform
H A Kishawy - One of the best experts on this subject based on the ideXlab platform.
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prediction of cutting forces in Broaching operation
2013Co-Authors: Ali Hosseini, H A KishawyAbstract:Prediction of cutting forces is one of the fundamental stages in the modeling of machining processes. The costly machining tests can be replaced by virtual simulations where cutting parameters and material properties can be altered repeatedly with no cost. Broaching is one of the machining operations which is extensively used in the industry. The geometry of Broaching Tool varies according to the desired profile of the workpiece which can be a simple line or complicated curves. This broad range of geometries imposes complexity on the distribution of the chip load along the cutting edge. Therefore, introducing a practical force model for Broaching operation can be challenging. An attempt is made in this paper to present a force model for Broaching. The newly proposed force model expresses the cutting edge as a B-spline parametric curve and uses its flexibility to calculate the chip load as well as cutting forces for orthogonal and oblique Broaching. Verified by previously published experimental results, the presented model has a great capability to simulate Broaching cutter geometry along with cutting forces.
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an energy based analysis of Broaching operation cutting forces and resultant surface integrity
2012Co-Authors: H A Kishawy, Ali Hosseini, Ehnam Moetakefimani, Viktor P. AstakhovAbstract:As a single-pass machining operation, Broaching is extensively used to produce simple and complicated profiles. Since a typical Broaching Tool includes roughing, semi-finishing and finishing teeth, its impact on the surface integrity is of prime interest. This paper presents an energy based analysis of the mechanics of cutting and the effects of successive teeth on the integrity of the machined surface. A cutting force model was developed and its authenticity was verified using the measured forces. The machined surfaces were used to study the effects of successive teeth on subsurface microhardness and subsurface microstructure.
Viktor P. Astakhov - One of the best experts on this subject based on the ideXlab platform.
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an energy based analysis of Broaching operation cutting forces and resultant surface integrity
2012Co-Authors: H A Kishawy, Ali Hosseini, Ehnam Moetakefimani, Viktor P. AstakhovAbstract:As a single-pass machining operation, Broaching is extensively used to produce simple and complicated profiles. Since a typical Broaching Tool includes roughing, semi-finishing and finishing teeth, its impact on the surface integrity is of prime interest. This paper presents an energy based analysis of the mechanics of cutting and the effects of successive teeth on the integrity of the machined surface. A cutting force model was developed and its authenticity was verified using the measured forces. The machined surfaces were used to study the effects of successive teeth on subsurface microhardness and subsurface microstructure.
Ali Hosseini - One of the best experts on this subject based on the ideXlab platform.
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prediction of cutting forces in Broaching operation
2013Co-Authors: Ali Hosseini, H A KishawyAbstract:Prediction of cutting forces is one of the fundamental stages in the modeling of machining processes. The costly machining tests can be replaced by virtual simulations where cutting parameters and material properties can be altered repeatedly with no cost. Broaching is one of the machining operations which is extensively used in the industry. The geometry of Broaching Tool varies according to the desired profile of the workpiece which can be a simple line or complicated curves. This broad range of geometries imposes complexity on the distribution of the chip load along the cutting edge. Therefore, introducing a practical force model for Broaching operation can be challenging. An attempt is made in this paper to present a force model for Broaching. The newly proposed force model expresses the cutting edge as a B-spline parametric curve and uses its flexibility to calculate the chip load as well as cutting forces for orthogonal and oblique Broaching. Verified by previously published experimental results, the presented model has a great capability to simulate Broaching cutter geometry along with cutting forces.
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an energy based analysis of Broaching operation cutting forces and resultant surface integrity
2012Co-Authors: H A Kishawy, Ali Hosseini, Ehnam Moetakefimani, Viktor P. AstakhovAbstract:As a single-pass machining operation, Broaching is extensively used to produce simple and complicated profiles. Since a typical Broaching Tool includes roughing, semi-finishing and finishing teeth, its impact on the surface integrity is of prime interest. This paper presents an energy based analysis of the mechanics of cutting and the effects of successive teeth on the integrity of the machined surface. A cutting force model was developed and its authenticity was verified using the measured forces. The machined surfaces were used to study the effects of successive teeth on subsurface microhardness and subsurface microstructure.
Dragos Axinte - One of the best experts on this subject based on the ideXlab platform.
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approach into the use of probabilistic neural networks for automated classification of Tool malfunctions in Broaching
2006Co-Authors: Dragos AxinteAbstract:The condition of Broaching Tools has crucial importance for the surface quality of the machined components. If undetected, Tool malfunctions such as wear, chipping and breakage of cutting teeth can result in severe damage or even scrapping expensive components, with direct implications on increasing the overall manufacturing costs. In contrast with other machining operations, Broaching is characterised by non-symmetric distributions of cutting forces vs. time, making more difficult the task of recognising Tool malfunctions. The paper reports on a methodology to automatically detect and classify Tool malfunctions in Broaching. The method was demonstrated through the use of time domain distribution of the push-off cutting force as a key sensory signal to monitor Broaching Tool condition when machining a nickel-based aerospace alloy. The characteristic features of the sensory signals have been extracted using in-house-developed programs and, afterwards, used to train and test a probabilistic neural network that enables automated classification of Tools with fresh, worn, chipped and broken teeth. Inputting new pattern characteristics to the main categories of Tool malfunctions, the system successfully classified them even when variations of signal amplitude and ranking of malfunctioned teeth occurred.
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Tool condition monitoring in Broaching
2003Co-Authors: Dragos Axinte, Nabil GindyAbstract:Abstract The paper reports on research which attempts to correlate the condition of Broaching Tools to the output signals obtained from multiple sensors, namely, acoustic emission (AE), vibration, cutting forces and hydraulic pressure, connected to a hydraulic Broaching machine. Broaching Tools in a variety of conditions, namely, freshly ground teeth, one or more chipped teeth, one or more weakened teeth, one or more broken teeth and Tools showing uniform wear, were investigated. Single tooth and multiple teeth Broaching Tools were employed during the Broaching trials and the sensory signals were analysed both in the time and frequency domains. The results show that AE, vibration and cutting force signals are all sensitive to Tool condition and a correlation can be made between the Broaching Tool condition and sensory signals using a variety of signal analysis techniques. A brief review of the advantages and the disadvantages of each sensor/signal and its associated analysis technique is presented. It is concluded that the most sensitive sensors to changes in Tool condition are not necessarily those that are easy to mount or incorporate in a Broaching machine. This can impose restrictions on the types of sensors that can be retrofitted to current machines. The condition monitoring system is currently being extended to incorporate sensor fusion techniques to increase the flexibility of the monitoring system and improve confidence in decision-making.
Ehnam Moetakefimani - One of the best experts on this subject based on the ideXlab platform.
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an energy based analysis of Broaching operation cutting forces and resultant surface integrity
2012Co-Authors: H A Kishawy, Ali Hosseini, Ehnam Moetakefimani, Viktor P. AstakhovAbstract:As a single-pass machining operation, Broaching is extensively used to produce simple and complicated profiles. Since a typical Broaching Tool includes roughing, semi-finishing and finishing teeth, its impact on the surface integrity is of prime interest. This paper presents an energy based analysis of the mechanics of cutting and the effects of successive teeth on the integrity of the machined surface. A cutting force model was developed and its authenticity was verified using the measured forces. The machined surfaces were used to study the effects of successive teeth on subsurface microhardness and subsurface microstructure.
