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.
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.
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.).
During construction for development and design documentation`s presentation takes more time, than directly designing. Therefore, actual mean is a execution`s automation of design documentation with using computer graphics. Computer Graphics is a knowledge base for creating, processing, and storing models of geometric shapes and their graphic images by using a computer. A characteristic development`s feature of modern production is its automation, one of the main components which are the systems of automated design (CAD). Those of them that are focused only on solving specific problems, for example, in the production of design documentation, are called local systems. At present, there are many software systems of computer design of varying complexity and purpose. One of the most commonly used graphical system is the AutoCAD. In creating architectural and construction drawings, the process of constructing a plan and cutting the construction site requires a considerable amount of time. Therefore, the using AutoCAD graphical system is relevant for quick and high-quality execution of this work. The method of step-by-step application of AutoCAD commands was developed by the authors for building boundaries of earthworks, horizontals with numeric labels, and also for determining the boundaries of earthworks for excavation and embankment of the site. The squares`s grid of the slopes and the linear scale of the drawing are crossed out is used to be given by the variant of the ratio, for the option for simplifying the construction. Similar construction is also used to construct a ramp (access road). In addition, the process of constructing lines of intersection of slopes with each other and with a topographic surface, as well as the process of building the profile of the area and profile of the construction site is shown in the work. After using each of the current AutoCAD commands for demonstration its execute, are given illustration of successive steps for creating a drawing of construction site. The performed work involves the preparation of material for methodically filling the course of computer graphics in a virtual environment, has relevance in the educational process. The results of the presented work are used in the sections of the teaching manual for students of engineering and construction specialties and in the virtual learning environment at the Higher School.
Under modern conditions vibrating hopper feeders with electromagnetic drive are irreplaceable when it comes to production processes in mechanical engineering and instrument making optimization processes. They are used to download small, medium or miniature details to automated technological equipment, such as automatic machines, automatic lines and automated complexes, or any other flexible automated production. The vibrating hopper loading devices are most commonly used in transportation and loading of details on working positions of assembly automatic machines and assembly automated complexes. In this case the details must be issued in a clearly oriented state. For this purpose, the stationary automated orienting devices, or the orienting devices located directly on the working vibrating feeders` bodies are used. Low compressed air pressure is often used in these devices. Apart from this, in some cases the low compressed air pressure is used in vibrating feeders to increase the maximum lifting angle when vibrating transportation of details on a transport tray of the feeder. We already know the designs of vibrating feeders, whose transport tray is equipped with channels and openings for the supply of compressed air, whose jets affect the parts that are transported in order to increase the maximum possible lifting angle or the speed of parts transportation, as well as to ensure the guaranteed gap between them at the download position. We also know the vibrating feeders` constructions equipped with jet pneumatic devices, which are set exactly on the vibrating feeder hopper and serve for non-contact orientation of details that are issued. All of these devices use the low compressed air supplied by means of the flexible pipeline from a workshop pneumatic network. But the fact that such network is simply absent in many enterprises` workshops makes it impossible to use the vibrating feeders like these, this way decreasing their use. For expanding their use it is necessary to have vibrating feeders with individual low pressure compressed air source. Modern production manufactures new models of machines with high technical economic indicators, so functionality increase of the existing one equipment and the development of new schemes of machines is an important task for designers and technological equipment manufacturers, because minimal improvement of its technological and performance can lead to a significant economic effect. The set of elements affecting the performance and efficiency of vibrating bunker feeders with electromagnetic drives that have a directional elastic system are presented in this paper. The additional structural elements increasing the functionality of such feeders are offered.
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