Abstract
The increase in the health of block cutters when achieving the operational characteristics of persistent contact joints of their elements is considered. The results of changes in the regulated parameters of the surface profile of the block housing using the saturation phenomenon are presented. The operational characteristics of block cutters change their values during operation, due to wear of frequently replaced parts (for example, 100 changes of cutting blocks correspond to the operating mode of contacting surfaces when normal pressure is applied at Pn = 10 MPa and relative speed of 10 m/min per 1 minute), as well as elastoplastic deformations of their elements. By these characteristics we mean the performance (rigidity of the structure, the flexibility of its parts, etc.) tools. Their change causes deviations of the specified properties of the surfaces of the parts of the cutters from the set values. Preset properties include the state of contact when irregularities in the profile of the deformable surface fill the depressions of the contacted surface. In order to minimize such deviations, it is necessary to achieve a state of the surface layer of contact pairs of elements so that these parameters stabilize (reach equilibrium values) during operation. For this, it is proposed to use the complex state variable of the surface layer for contact compounds with saturation.
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