Study on the Ultrasonic Vibration Impact on the Performance of Taps when Thread Cutting in Workpieces Made of Difficult-to-Machine Materials

Materials with high mechanical properties are increasingly used in modern mechanical engineering in order to enhance the performance and service life of critical parts. Since these are difficult-to-machine materials, serious problems can arise due to low tool life or even with its breakage during mechanical processing. The greatest difficulties are connected with the processing of small-diameter holes, since, for example, breakage of drills or taps occurs when drilling and tapping. It should also be noted that when threading in workpieces made of difficult-to-machine materials, the cutting teeth of the taps are chipped. One of the possible solutions to this problem is the use of physicochemical processing methods, in particular, the transmission of forced ultrasonic oscillations to the tap.