The Experts below are selected from a list of 51 Experts worldwide ranked by ideXlab platform
Pradeep Khanna - One of the best experts on this subject based on the ideXlab platform.
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Statistical Modeling Approach for Optimization of a Stationary Hook Hopper
Applied Mechanics and Materials, 2011Co-Authors: Astha Kukreja, Pankaj Chopra, Akshay Aggarwal, Pradeep KhannaAbstract:The work aims at the optimization of the output feed rate of a Stationary Hook Hopper Feeder so that the best possible set of parameters affecting it can be selected to get the desired output. For this purpose the effect of various parameters on the Feeder output is studied. To facilitate the study and detailed analysis, a statistical model is constructed which is used to predict and optimize the performance of the system. Efficient feed rate optimization determines the input variable settings to adjust the feed rate of the Feeder according to the consumption of the parts in the next phase of production. The Stationary Hook Hopper Feeder, whose performance is to be studied, consists of a rotating circular plate and a guiding hook fixed at the centre and running up to the periphery of the plate. As the plate rotates, the parts follow the trajectory of the hook, orient themselves and then eventually are delivered through the delivery chute, tangentially to the plate. The factors influencing the Feeder’s performance include the speed of rotation of the disc, the population of the parts in the Hopper and the size of parts to be fed. A series of experiments is performed on the three process parameters to investigate their effect on the feed rate. To study the interaction among the factors a full 23 factorial experiment approach has been adopted using the two basic principles of experimental design-replication and randomization. The process model was formulated based on Analysis of variance (ANOVA) using Minitab® statistical package. The outcome is represented graphically and in the form of empirical model which defines the performance characteristics of the Stationary Hook Hopper Feeder.
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Application of Full Factorial Design for Optimization of Feed Rate of Stationary Hook Hopper
International Journal of Modeling and Optimization, 2011Co-Authors: Astha Kukreja, Pankaj Chopra, Akshay Aggarwal, Pradeep KhannaAbstract:the work aims at the optimization of the output feed rate of a Stationary Hook Hopper Feeder so that the best possible set of parameters affecting it can be selected to get the desired output. For this purpose the effect of various parameters on the Feeder output is studied. To facilitate the study and detailed analysis, a statistical model is constructed which is used to predict and optimize the performance of the system. Efficient feed rate optimization determines the input variable settings to adjust the feed rate of the Feeder according to the consumption of the parts in the next phase of production. The Stationary Hook Hopper Feeder, whose performance is to be studied, consists of a rotating circular plate and a guiding hook fixed at the centre and running up to the periphery of the plate. As the plate rotates, the parts follow the trajectory of the hook, orient themselves and then eventually are delivered through the delivery chute, tangentially to the plate. The factors influencing the Feeder's performance include the speed of rotation of the disc, the population of the parts in the Hopper and the size of parts to be fed. A series of experiments is performed on the three process parameters to investigate their effect on the feed rate. To study the interaction among the factors a full 23 factorial experiment approach has been adopted using the two basic principles of experimental design- replication and randomization. The process model was formulated based on Analysis of variance (ANOVA) using Minitab® statistical package. The outcome is represented graphically and in the form of empirical model which defines the performance characteristics of the Stationary Hook Hopper Feeder.
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Mathematical performance analysis of a reciprocating-fork Hopper Feeder
2009 IEEE Student Conference on Research and Development (SCOReD), 2009Co-Authors: Sarv Parteek Singh, Shramana Ghosh, Pradeep KhannaAbstract:Feeders form a critical part of automated assembly lines. Along with feeding from a bulk supply, they also convert the randomness of parts into a flow in a geometrical pattern and deliver them at a predetermined rate. This paper mathematically analyses a reciprocating-fork Hopper Feeder. This system supplies headed parts like bolts and rivets in an upright configuration to the delivery chute through a pneumatically-actuated reciprocating fork which picks up the parts from a rotating bowl. The feed rate performance of the Feeder is analysed for three parameters: part population, rate of reciprocation of fork and speed of rotation of bowl. The Design of Experiments (DOE) is done using 23 full-factorial method. A mathematical model is formulated using Design Expert® software, to investigate the significance of individual parameters as well as interactions amongst them. Adequacy of the model to predict the performance of the Feeder is checked using Analysis of Variance (ANOVA) method. The results obtained are presented graphically and in the form of factorial model which defines the performance characteristics of the Feeder. The mathematical model also provides the most appropriate process parameter settings to optimize the feed rate of the Feeder under the given constraints.
A. L. Bespalov - One of the best experts on this subject based on the ideXlab platform.
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Increasing the productivity and accuracy of separation into fractions of a mixture of dissimilar disc-shaped products
Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies, 2020Co-Authors: A. L. Bespalov, I. G. SvidrakAbstract:During collection and counting of coins or tokens, the mixture must be divided into fractions by denomination. Methods of separating coins and existing designs of equipment for separation are considered. It is revealed that the existing designs of vibration devices for sorting disc-shaped parts have low productivity, as well as a fairly large sorting error. A set of elements affecting the performance and efficiency of vibration separators with electromagnetic drives is considered. A new separator design based on a vibrating Hopper Feeder is proposed. Changed the geometry of the working body and parameters of other elements that affect the accuracy of the separation process and its performance. A prototype of the vibration separator was made according to the project of the proposed design. Experimental studies of the separation process on this separator were carried out to identify the parameters of the accuracy of separation of a mixture of coins with a nominal value of one and two kopecks at different speeds of the process. The research was conducted on two batches of 1000-piece coins with a nominal value of one and two kopecks. Both batches were mixed, the mixture was loaded into the separator Hopper in bulk and the separation process was carried out, at the end of which the number of coins of both denominations was determined, which were not in their own separate batches. For each transport speed, fifty measurements were made and the arithmetic mean value of the indicator was determined. It was found that the absolute accuracy of separation on this device is achieved at a speed of vibration transport up to 0.5 m/s. When upgrading the separation zone using compressed air jets, absolute separation accuracy is achieved at a speed of up to 1 m/s. It is established that the new design of the vibration separator proposed by the authors significantly increases the productivity of the sorting process by denominations (diameters) of the coin mixture into fractions with absolute separation accuracy. This device can also be used for sorting small parts or products that have the shape of disks (washers, rondels, buttons, etc.).
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Improving the performance of vibration Feeders with an electromagnetic vibration drive and a combined vibration system
Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies, 2020Co-Authors: A. L. Bespalov, I. G. Svidrak, O. O. BoikoAbstract:Vibration loading devices are widely used in various branches of mechanical engineering to load piece blanks of automatic machines and automatic lines as well as robotic systems, automated systems and flexible automated production. Vibration devices for transportation and loading of miniature, small and medium-sized products are the most widely used. Modern designs of vibratory Feeders, made according to the classical dynamic scheme and having a two-mass oscillating system, do not fully use the energy of the vibratory exciter to perform useful work. In addition, due to the presence of a heavy reactive mass, they have a fairly large weight. When the vibrating Feeder is operating, the energy of the vibration exciter is spent on pumping both the Hopper, which performs useful work, and the reactive plate, which performs idle vibrations. Thus, part of the energy of the vibration exciter is not used for performing useful work, but is spent idly. To increase the efficiency of the device, increase its performance and reduce its weight and metal consumption, it is necessary to change the design of the vibratory Feeder and some of its elements, which affect the redistribution of the oscillation amplitudes of the working (Hopper) and reactive mass of the vibratory Feeder. Modern production involves the creation of new models of machines with high technical and economic indicators, therefore, improving the efficiency of existing equipment and the development of new schemes of machines is an important task for designers and manufacturers of technological equipment, as the minimum improvement of its technological and operational performance can lead to a tangible economic effect. To solve this problem we developed a new design vibrating Hopper Feeder, in which the increase of the horizontal component of the oscillation amplitude of the working element (Hopper) is not at the expense of increased power of the vibratory exciter, but due to internal redistribution of energy between the elements of the oscillating system that makes better use of the energy of the vibratory exciter to perform useful work, i.e. to increase the coefficient of useful action. In addition, the weight and metal content of the vibrating Feeder structure are simultaneously reduced.
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Optimization of the structure of the vibratory Feeders with electromagnetic vibrating drive and a combined oscillating system
Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies, 2019Co-Authors: A. L. Bespalov, I. G. Svidrak, R. Z. StotskoAbstract:Vibration loading devices are widely used in various branches of mechanical engineering to load piece blanks of automatic machines and automatic lines as well as robotic systems, automated systems and flexible automated production. Vibration devices for transportation and loading of miniature, small and medium-sized products are the most widely used. In the study of vibration transport, one of the most important issues is the study of the dependence of the average transport speed on the parameters of the oscillation of the carrier tray. It is most convenient to conduct a study in dimensionless quantities when expressing the speed of transportation through the speed coefficient, which shows how much the real speed of the part is close to the maximum speed of the transporting surface. For vibration conveyors and vibratory Feeders with non-separable transportation parts using modes that are implemented mainly elliptical or asymmetric longitudinal vibrations of the bearing plane. Asymmetric laws of motion of vibration conveyors provide the highest performance in a non-invasive mode of movement of billets, but such conveyors have found a very limited distribution due to the complexity of the implementation of asymmetric vibrations by simple means. To implement the asymmetric laws of oscillation of the working body and thereby increase the speed coefficient used as power sources generators asymmetric types of oscillations, which have a very high cost. Modern production involves the creation of new models of machines with high technical and economic indicators, therefore, improving the efficiency of existing equipment and the development of new schemes of machines is an important task for designers and manufacturers of technological equipment, as the minimum improvement of its technological and operational performance can lead to a tangible economic effect. To solve this problem, the authors developed a new design of vibration Hopper Feeder, which carries out the transportation of products in the mode without throwing with an asymmetric law of oscillation of the carrier tray when connected directly to the AC network without using an asymmetric pulse generator and conducted an experimental study of its design to determine the speed coefficient during vibration transportation.
I. G. Svidrak - One of the best experts on this subject based on the ideXlab platform.
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Increasing the productivity and accuracy of separation into fractions of a mixture of dissimilar disc-shaped products
Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies, 2020Co-Authors: A. L. Bespalov, I. G. SvidrakAbstract:During collection and counting of coins or tokens, the mixture must be divided into fractions by denomination. Methods of separating coins and existing designs of equipment for separation are considered. It is revealed that the existing designs of vibration devices for sorting disc-shaped parts have low productivity, as well as a fairly large sorting error. A set of elements affecting the performance and efficiency of vibration separators with electromagnetic drives is considered. A new separator design based on a vibrating Hopper Feeder is proposed. Changed the geometry of the working body and parameters of other elements that affect the accuracy of the separation process and its performance. A prototype of the vibration separator was made according to the project of the proposed design. Experimental studies of the separation process on this separator were carried out to identify the parameters of the accuracy of separation of a mixture of coins with a nominal value of one and two kopecks at different speeds of the process. The research was conducted on two batches of 1000-piece coins with a nominal value of one and two kopecks. Both batches were mixed, the mixture was loaded into the separator Hopper in bulk and the separation process was carried out, at the end of which the number of coins of both denominations was determined, which were not in their own separate batches. For each transport speed, fifty measurements were made and the arithmetic mean value of the indicator was determined. It was found that the absolute accuracy of separation on this device is achieved at a speed of vibration transport up to 0.5 m/s. When upgrading the separation zone using compressed air jets, absolute separation accuracy is achieved at a speed of up to 1 m/s. It is established that the new design of the vibration separator proposed by the authors significantly increases the productivity of the sorting process by denominations (diameters) of the coin mixture into fractions with absolute separation accuracy. This device can also be used for sorting small parts or products that have the shape of disks (washers, rondels, buttons, etc.).
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Improving the performance of vibration Feeders with an electromagnetic vibration drive and a combined vibration system
Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies, 2020Co-Authors: A. L. Bespalov, I. G. Svidrak, O. O. BoikoAbstract:Vibration loading devices are widely used in various branches of mechanical engineering to load piece blanks of automatic machines and automatic lines as well as robotic systems, automated systems and flexible automated production. Vibration devices for transportation and loading of miniature, small and medium-sized products are the most widely used. Modern designs of vibratory Feeders, made according to the classical dynamic scheme and having a two-mass oscillating system, do not fully use the energy of the vibratory exciter to perform useful work. In addition, due to the presence of a heavy reactive mass, they have a fairly large weight. When the vibrating Feeder is operating, the energy of the vibration exciter is spent on pumping both the Hopper, which performs useful work, and the reactive plate, which performs idle vibrations. Thus, part of the energy of the vibration exciter is not used for performing useful work, but is spent idly. To increase the efficiency of the device, increase its performance and reduce its weight and metal consumption, it is necessary to change the design of the vibratory Feeder and some of its elements, which affect the redistribution of the oscillation amplitudes of the working (Hopper) and reactive mass of the vibratory Feeder. Modern production involves the creation of new models of machines with high technical and economic indicators, therefore, improving the efficiency of existing equipment and the development of new schemes of machines is an important task for designers and manufacturers of technological equipment, as the minimum improvement of its technological and operational performance can lead to a tangible economic effect. To solve this problem we developed a new design vibrating Hopper Feeder, in which the increase of the horizontal component of the oscillation amplitude of the working element (Hopper) is not at the expense of increased power of the vibratory exciter, but due to internal redistribution of energy between the elements of the oscillating system that makes better use of the energy of the vibratory exciter to perform useful work, i.e. to increase the coefficient of useful action. In addition, the weight and metal content of the vibrating Feeder structure are simultaneously reduced.
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Optimization of the structure of the vibratory Feeders with electromagnetic vibrating drive and a combined oscillating system
Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies, 2019Co-Authors: A. L. Bespalov, I. G. Svidrak, R. Z. StotskoAbstract:Vibration loading devices are widely used in various branches of mechanical engineering to load piece blanks of automatic machines and automatic lines as well as robotic systems, automated systems and flexible automated production. Vibration devices for transportation and loading of miniature, small and medium-sized products are the most widely used. In the study of vibration transport, one of the most important issues is the study of the dependence of the average transport speed on the parameters of the oscillation of the carrier tray. It is most convenient to conduct a study in dimensionless quantities when expressing the speed of transportation through the speed coefficient, which shows how much the real speed of the part is close to the maximum speed of the transporting surface. For vibration conveyors and vibratory Feeders with non-separable transportation parts using modes that are implemented mainly elliptical or asymmetric longitudinal vibrations of the bearing plane. Asymmetric laws of motion of vibration conveyors provide the highest performance in a non-invasive mode of movement of billets, but such conveyors have found a very limited distribution due to the complexity of the implementation of asymmetric vibrations by simple means. To implement the asymmetric laws of oscillation of the working body and thereby increase the speed coefficient used as power sources generators asymmetric types of oscillations, which have a very high cost. Modern production involves the creation of new models of machines with high technical and economic indicators, therefore, improving the efficiency of existing equipment and the development of new schemes of machines is an important task for designers and manufacturers of technological equipment, as the minimum improvement of its technological and operational performance can lead to a tangible economic effect. To solve this problem, the authors developed a new design of vibration Hopper Feeder, which carries out the transportation of products in the mode without throwing with an asymmetric law of oscillation of the carrier tray when connected directly to the AC network without using an asymmetric pulse generator and conducted an experimental study of its design to determine the speed coefficient during vibration transportation.
Astha Kukreja - One of the best experts on this subject based on the ideXlab platform.
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Statistical Modeling Approach for Optimization of a Stationary Hook Hopper
Applied Mechanics and Materials, 2011Co-Authors: Astha Kukreja, Pankaj Chopra, Akshay Aggarwal, Pradeep KhannaAbstract:The work aims at the optimization of the output feed rate of a Stationary Hook Hopper Feeder so that the best possible set of parameters affecting it can be selected to get the desired output. For this purpose the effect of various parameters on the Feeder output is studied. To facilitate the study and detailed analysis, a statistical model is constructed which is used to predict and optimize the performance of the system. Efficient feed rate optimization determines the input variable settings to adjust the feed rate of the Feeder according to the consumption of the parts in the next phase of production. The Stationary Hook Hopper Feeder, whose performance is to be studied, consists of a rotating circular plate and a guiding hook fixed at the centre and running up to the periphery of the plate. As the plate rotates, the parts follow the trajectory of the hook, orient themselves and then eventually are delivered through the delivery chute, tangentially to the plate. The factors influencing the Feeder’s performance include the speed of rotation of the disc, the population of the parts in the Hopper and the size of parts to be fed. A series of experiments is performed on the three process parameters to investigate their effect on the feed rate. To study the interaction among the factors a full 23 factorial experiment approach has been adopted using the two basic principles of experimental design-replication and randomization. The process model was formulated based on Analysis of variance (ANOVA) using Minitab® statistical package. The outcome is represented graphically and in the form of empirical model which defines the performance characteristics of the Stationary Hook Hopper Feeder.
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Application of Full Factorial Design for Optimization of Feed Rate of Stationary Hook Hopper
International Journal of Modeling and Optimization, 2011Co-Authors: Astha Kukreja, Pankaj Chopra, Akshay Aggarwal, Pradeep KhannaAbstract:the work aims at the optimization of the output feed rate of a Stationary Hook Hopper Feeder so that the best possible set of parameters affecting it can be selected to get the desired output. For this purpose the effect of various parameters on the Feeder output is studied. To facilitate the study and detailed analysis, a statistical model is constructed which is used to predict and optimize the performance of the system. Efficient feed rate optimization determines the input variable settings to adjust the feed rate of the Feeder according to the consumption of the parts in the next phase of production. The Stationary Hook Hopper Feeder, whose performance is to be studied, consists of a rotating circular plate and a guiding hook fixed at the centre and running up to the periphery of the plate. As the plate rotates, the parts follow the trajectory of the hook, orient themselves and then eventually are delivered through the delivery chute, tangentially to the plate. The factors influencing the Feeder's performance include the speed of rotation of the disc, the population of the parts in the Hopper and the size of parts to be fed. A series of experiments is performed on the three process parameters to investigate their effect on the feed rate. To study the interaction among the factors a full 23 factorial experiment approach has been adopted using the two basic principles of experimental design- replication and randomization. The process model was formulated based on Analysis of variance (ANOVA) using Minitab® statistical package. The outcome is represented graphically and in the form of empirical model which defines the performance characteristics of the Stationary Hook Hopper Feeder.
O. O. Boiko - One of the best experts on this subject based on the ideXlab platform.
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Improving the performance of vibration Feeders with an electromagnetic vibration drive and a combined vibration system
Scientific Messenger of LNU of Veterinary Medicine and Biotechnologies, 2020Co-Authors: A. L. Bespalov, I. G. Svidrak, O. O. BoikoAbstract:Vibration loading devices are widely used in various branches of mechanical engineering to load piece blanks of automatic machines and automatic lines as well as robotic systems, automated systems and flexible automated production. Vibration devices for transportation and loading of miniature, small and medium-sized products are the most widely used. Modern designs of vibratory Feeders, made according to the classical dynamic scheme and having a two-mass oscillating system, do not fully use the energy of the vibratory exciter to perform useful work. In addition, due to the presence of a heavy reactive mass, they have a fairly large weight. When the vibrating Feeder is operating, the energy of the vibration exciter is spent on pumping both the Hopper, which performs useful work, and the reactive plate, which performs idle vibrations. Thus, part of the energy of the vibration exciter is not used for performing useful work, but is spent idly. To increase the efficiency of the device, increase its performance and reduce its weight and metal consumption, it is necessary to change the design of the vibratory Feeder and some of its elements, which affect the redistribution of the oscillation amplitudes of the working (Hopper) and reactive mass of the vibratory Feeder. Modern production involves the creation of new models of machines with high technical and economic indicators, therefore, improving the efficiency of existing equipment and the development of new schemes of machines is an important task for designers and manufacturers of technological equipment, as the minimum improvement of its technological and operational performance can lead to a tangible economic effect. To solve this problem we developed a new design vibrating Hopper Feeder, in which the increase of the horizontal component of the oscillation amplitude of the working element (Hopper) is not at the expense of increased power of the vibratory exciter, but due to internal redistribution of energy between the elements of the oscillating system that makes better use of the energy of the vibratory exciter to perform useful work, i.e. to increase the coefficient of useful action. In addition, the weight and metal content of the vibrating Feeder structure are simultaneously reduced.