RECOMMENDATIONS FOR THE SELECTION AND OPERATION OF A CURRENT FREQUENCY CONVERTER FOR A LINE DRILLING MACHINE WITH AUTOMATIC ADJUSTMENT OF THE FEED RATE OF DRILLING TOOLS
The work reveals the relevance of using a current frequency converter in the tool feeding mechanism of a line drilling machine BS-32. The design of the feed mechanism is briefly reviewed. The results of calculating the operating modes of the electric motor and the operation of the mechanism as a whole are given, where the ranges of variation of the speeds of movement of the drilling carriage and the speed of rotation of the electric motor are determined. The results of the analysis of the most popular current frequency converters are presented, a comparison is made in terms of their functionality, cost and purpose, their advantages and disadvantages are identified and compared. Based on the results of the analysis, the necessary functionality of the frequency converter was determined for its use in drilling operations. Also presented are the basic recommendations for the selection and operation of current frequency converters in relation to drilling machines.