Adjusting the size of the rope thread in the machining of dimensional tool

The article considers the possibility of adjustment the geometrical deviations profile rope thread with a large pitch, which appear as a consequence of wear of the cutting tool during machining. Due to the fact that the method of processing rope thread easily modeled by cutting the circle along a spiral trajectory, then this method easily explore the any medium for 3-D modeling. Conducted analysis of influence of trajectory of the dimensional instrument and the value of its wear on the thread diameters and the radiuses of rounding. The results allow establishing that due to changes in the tool path correction is possible geometrical parameters of rope thread, thereby will process with ensuring the required geometry. The proposed approach is reduces the cost of the cutting tool by increasing its resources.