Research into the causes of inaccuracies of components of complex for coil winding with finished yern at OE

Slobodan Stefanović ,Dusko Kostic,Radojko Lojanicic,Radoje Cvejić

doi:10.5937/jpmnt1304016s

Abstract

Analysis of tree failure showed events occurred due to increased levels of mechanical oscillations. The values of failures were used to determine reliability of the work of constituent components of analyzed complex. Based on them are determined areas of time of reliable (safe) work, as well as the areas of reduction of their reliability.

Highlights

System of power transmission of the system for coil winding with finished yarn is shown in and consists the following parts and components which are classified based on the spun yarn which is obtained by spinning from the rotor and on its way to the coil on which is winding
From the obtained diagrams of the reliability f (Rei,t) for exploitation conditions of the integral components work of the analyzed complex, it can be determined the field of their time of reliable work, as well as areas of reducing their reliability
From the form of the correction curve values of reliability of integral components of analyzed complex Pi (t), that is, according to the curve slope, can be analytically predicted reliability intervals that would later be used as a basis in determining the reliability authoritative

Summary

RESEARCH INTO THE CAUSES OF INNACURACIES OF COMPLEX

Integral components of this complex are very burdened in their work because they are exposed to wear process due to the large angular velocity, and with it the stochastic process of oscillation. In order to monitor the process of stochastic oscillations is necessary to make the location of measuring points for measuring oscillations in a way that the selected measuring points provide the most accurate measured data of vibration level (Fig. 3) For this analysis were taken from two measuring points, as follows: 6-7 on the complex for coil winding with finished yarn. With analysis, which includes procedures of application of the technology for preventive maintenance and methods of diagnosis, may affect around 70% of safety functioning of the complex work of OE – spinning machine On such a complex technical system, it was performed testing of the mechanical oscillations on the selected control points using the amplitude - frequent analysis, and based on the obtained results, it was determined the reliability of components of analyzed complex of power transmission. Cancellations due to breakage due to contamination which leads to the unconnected broken yarn or the beginning of a new coil winding

Cancellation of the breaks at stopping of coil due to breakage of the yarn

RELIABILITY OF THE WORK OF THE COMPLEX FOR COIL WINDING

DETERMINATION OF CORRECTION VALUES OF THE RELIABILITY OF

CONCLUSION

Findings

PREVENTIVE PERIODIC REPAIRS - Small and medium repairs of analyzed complex