technologies, new drilling rigs and their various modifications for deep drilling is being developed. They differ according to the technologies applied in practice. The basic principle of drilling with diamond bits into the rock is mainly in the drilling tool's penetration into the rock and its subsequent disintegration by cutting. Practically all available technologies are used in the implementation of drilling works, which allow the necessary tests and measurements to be performed during drilling to obtain the required geological or mining information. The technological process of rock disintegration by rotary drilling is the subject of research from a qualitative point of view. The primary goal of rotary core drilling is to obtain a cylindrical drilling core, the compactness of which is determined by the drillability, physical-mechanical properties of the rock, and the drilling technology used. The quality of the work is evaluated by the core's yield, which is the ratio of the drilled length of the borehole to the length of the obtained core. Rotary core drilling with direct flushing is the most common method of exploratory drilling. This method of rock disintegration is the subject of our scientific research from the point of view of statistical regulation in conjunction with industrial practice [1; 2]. Important mode parameters for rotary drilling with diamond bits (tools) are the speed of revolutions of the bit n (rpm) and the pressure force F (N). Determining the speed of revolutions as the first input parameter in the working mode of drilling requires an empirical approach. Increasing or adjusting the speed of revolutions increases the progress of the drilling process [3; 4; 5; 6; 7]. It is recommended not to exceed the set optimal working speed of revolutions. Subsequently, it is necessary to select the optimal level of pressure force on the drilling tool as the second input parameter of the process. The pressure force has a great influence not only on the mechanical drilling speed but also on maintaining the borehole's required (projected) direction. Improperly determined and the high-pressure force, despite relatively good drilling procedures, results in rapid wear of the drilling tool, damage to the drilling shaft, and deflection of the borehole in an undesired direction. When working with low-pressure force, undesirable conditions also arise, especially low drilling procedures and excessive wear of the drilling tool concerning the achieved drilling speed. Both cases of improperly selected pressure force do not allow the drilling tool to work in the optimal mode. Incorrect selection of revolutions speed and pressure force results in damage to the drilling rig. The drilling tool's performance and its efficiency depend on many structural elements, such as the construction of the tool body, the geometry of the cutting part, the flushing system of the device, and the setting of the optimal working mode. One of the possible measurable output parameters of the drilling process is the vibration signal of the acceleration [8; 9; 10; 11; 12]. The vibrating effects of the drilling rig are undesirable. However, they represent an important technological parameter, which indicates the quality of the process and the drilling rig's technical condition [13; 14; 15; 16; 17; 18]. Therefore, it is useful to know the effect of vibration on the drilling process through statistical control. The research's basic task was to apply control charts for the needs of statistical quality control of the drilling process. The main goal was to examine the variability of the process in order to achieve the required product quality. The control charts were first used by the American engineer [PERSON] (1891-1961) in 1920 to control the technological process. They represent a graphical tool that ensures continuous monitoring of data on process variability and allows us to obtain information about the monitored process's capability.