THROW-AWAY CUTTING INSERT AND CUTTING TOOL WITH REPLACEABLE CUTTING EDGE USING THE SAME

摘要

The present invention includes: a first ridge line 5 positioned at an intersection between a first surface 2 and an upper side section 4a of a side surface 4 along the first surface 2; and a second ridge line 6 positioned at an intersection between a second surface 3 and a lower side section 4b along the second surface 3 of the side surface 4. A cutting section is formed at the first ridge line 5 with the first surface 2 forming a rake face. A second cutting section is formed at the second ridge line 6 with the lower side section 4b along the second surface 3 of the side surface 4 forming a rake face. Selective use can be made of the first cutting section and the second cutting section.