OBRABOTKAMETALLOV Vol. 24 No. 2 2022 TECHNOLOGY For the case where 2 2 m , the equation of straight line corresponds to formula (10): _ . Pcut m x x (10) Calculation of the ISCD motion path Correcting the accuracy of surface shapes, while ensuring the conditions for removing the maximum allowance and the absence of cutting the surface to an inscribed circular cylinder at each transition, is carried out by calculating the limiting value of the cutting tool overhang per transition p_max I h (where I is the transition sequence number). The value p_max I h is determined based on the calculation of the trajectory of the ISCD motion trajectory along the contour of the base section of the surface and data on the parameters of the inscribed cylinder (Fig. 3). Fig. 3. Schematic diagram for the calculation _ max I p h of the transition: 1 – processing module; 2 – contour of the base section; 3 – contour of the inscribed circular cylinder; 4 – contour of the surface before machining at the transition; 5 – contour surface after machining for a wide transition; 6 – equidistant to the contour of the technological section; k-k – surface area suitable for this base The calculation algorithm for _ max I p h is the following sequence: 1. The point of intersection of the straight line corresponding to the axis of movement of the cutting tool in the current position of the ISCD (Equation (8)), with the contour of the section of the inscribed circular cylinder _ C cut m P is calculated. 2. The distance from the point _ C cut m P to the zero point _ 0cut m P of the ISCD is calculated (the point at which the cutting tool overhang is taken as 0 I p h ). The calculation is made according to formulas (11) and (12): 2 2 _ _ 0 _ _ 0 _ ( ) ( ) , I p m Pcut m P m Pcut m P m h x x y y (11)
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