Basic conditions of effective treatment of holes in brittle nonmetal materials using diamond drills

It is shown that to ensure the process of drilling holes in parts made of brittle non-metallic materials, the axial cutting force generated by a diamond drill must be greater than the critical cutting force corresponding to the threshold of brittle fracture of the material. A model for removing cuttings from the cutting zone has been developed, which ensures the operation of the drill in the self-sharpening mode. The recommended values ??of the pressure of the coolant supplied to the inner cavity of the drill, depending on its diameter, have been calculated. Il. 6, bibliography: 3 titles.