FIELD: instrument engineering.
SUBSTANCE: cutting plate (2) comprises eight identical cutting edges (14). Each individual cutting edge (14) comprises first cutting edge section (16) and second section (18) of cutting edge. Vertex angle between first section (16) of the cutting edge and second section (18) of the cutting edge is in range from 75 to < 90°. Cutting edge first section (16) and cutting edge second section (18) have the same length to ensure the same depth of cutting. On the view along central axis (4) the first angle within 14 ± 9° is formed between first imaginary line extending from central axis (4) to angular point in first end surface (8), and second imaginary line extending from central axis (4) to adjacent angular point (24) in second end surface (10).
EFFECT: possibility to process internal right angle on workpiece.
15 cl, 2 dwg
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