CHOICE OF TOOL FOR CUTTING THE GEARS OF WORM REDUCERS IN CONDITIONS OF REPAIR BASE FIRE-FIGHTING EQUIPMENT

Abstract

The issue of increasing the durability and maintainability of worm gears, which are part of the used firefighting equipment and equipment, is considered.

The aim of the work is to identify and substantiate the cutting of worm gear pairs with a tool with parameters similar to the worm of the repaired worm gear in the conditions of individual repair.

The method of manufacturing worm gear pairs is analyzed and the possibilities of cutting them in the conditions of the repair base of fire – fighting equipment with a tool different from the parameters of the worm are considered. Based on the analysis, it is shown that, using the above recommendations, it is possible to repair cut the worm as well as the crown of the worm wheel with a worm cutter with parameters that differ from the parameters June which is ahead, which is being repaired. In this case, under certain conditions, the choice of the coefficient of the diameter of the worm stored gear ratio, and in some cases the latter differs slightly from the gear ratio of the gearbox to be repaired. In the first and second cases, the center-to-center distance (gearbox housing) is maintained.