A NEW METHOD FOR DETERMINING THE PERMISSIBLE WEAR OF PARTS, CONNECTIONS, MACHINE CONDITION PARAMETERS

Abstract

The technical documentation contains a standard for permissible wear of machine parts. An indicator of the technical condition is a resource parameter that depends on the operating time or operating time of the selected part or node. (Research purpose) The research purpose is in developing a new methodology for determining the permissible wear of machine parts. (Materials and methods). When developing the method at the first stage, they tried to solve this problem economically, reducing the calculated costs of downtime, while optimizing the allowable wear. For the parts of the same name, the result gave large calculation errors, since they did not take into account the influence of different wear rates on reliability indicators, the probability of failure and service life. With an increase in the rate of wear, the probability of failure turns into the probability of preventive replacement. In order to increase the reliability of the results of the study, it is necessary to take into account the climatic conditions of operation. Since the standard is constant for all regions of the country, it is necessary to change its value for different regions. (Results and discussion). The article presents the dependence of the increase in operating time on the wear rate of a group of the same name; the lower the wear rate, the greater the operating time of such parts. The probability of failure also changes by changing the resource of these parts. (Conclusions). This technique makes it possible to reduce the probability of failure by five or more times during the inter-control period. This circumstance can make the diagnosed machine trouble-free, provided it is equipped with modern means of monitoring the technical condition.