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1. Research Methods of Milling Technology Elements Scientific research methods of milling technology elements determines the low level of vibration for cutting modes which save tool from premature failure.
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2. Constructive and processing methods of reducing vibration level of the metalworking machinery elements
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Pneumatic Device Of The Preload And Dynamic Loads Balancing to reduce the Intensity of Thermal Processes in the Metal Cutting process The results of the simulation conducted in the Lab View National instruments, confirmed the adequacy of the structural diagram and the promising use of the damping device. Basing on further comparison of spectrograms we made a conclusion that the presence of backlash between the operating body and the machine-tool leads to an increased oscillations amplitude that negatively affected the processing quality of the parts. As a result of applying preload, the reduction in vibration and noise in the technological system is attained, the quality of treatment increases, tool life increases by reducing the intensity of thermal processes in metal cutting. It is confirmed by experimental data.
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Mobile Complex For Rapid Diagnosis Of The Technological System Elements It is possible to determine the frequencies close to resonance, according to the obtained values of the vibratory displacement as well as the crest factor value can be determined, as the ratio of maximum amplitude value of time signal to RMS. Increased values of cross-factor (above 1.41) indicate the presence of impact in the drive elements, which requires thorough diagnostic. Thus, the mobile complex for fast diagnosis of the technological system elements with improved special software allows to optimize the signal processing in the terms of filtration and frequency analysis, and the research carried out by students, has demonstrated how simple to operate the complex.
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Hydrostatic Vibratory Drive of the Test Stand for Excitation of the Amplitude-Modulated Vibrations Further development of the concept of hydrostatic drive for the vibrational test stands requires creation of the dynamic excitation systems of random narrow-band vibration with the high level of harmonics spectrum density. This type of testing machines are capable to synthesize the random oscillations, simulating as much as possible the transport vibration and the vibration of the operating power technological machinery at high lifting capacity due to the energy and control possibilities of the volume hydraulic drive.
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Stand for dynamic tests of technical products in the mode of amplitude-frequency modulation with hydrostatic vibratory drive
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Hydraulic drive of vibration stand for testing technical products by random vibration method The changing narrowband random vibration mode is one of the most effective methods for vibration testing. Depending on the appropriate stand settings and adequate test method it is implemented a large number of the most important accelerations at a given level as at the broad-band vibration tests
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Land-based sources of seismic signals
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Actuators of the Seismic Vibrations Sources We can conclude that the heavy weight of a clamp is one of the main drawbacks of modern seismic vibration sources, limiting the geographical range as well as performance of field woks. Also the development of a vibrating source of regional characteristics of high power should be carried out taking into account the weight and size parameters of the machine as well problems of clamping the base plate to the ground is to be resolved. This disadvantage can be avoided if inertial mass is replaced by the active periodically dropped weight.
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