Abstract:
The cutting insert 4 of a sectional milling cutter is fixed between two surfaces respectively of the support 2 and the fixing bracket, by means of a socket head screw 13. So as to position insert 4 rapidly and precisely, with constant cutting profile, the face 2' of the support is equipped with two surface plates 8 and 8' which project and converge together at an angle of approx. 75°. In correspondence, the cutting insert 4 has seats or apertures 6 and 6', forming a wedge which has an aperture angle equal to that of the planes 8 and 8' so that they can be coupled perfectly. The cutting insert 4 has an elliptical profile with two cutting surfaces 5 and 5' and with two apertures or seats 6 and 6' which are placed opposite each other and are superimposed by rotating the insert around the two respective transverse axes. On the apex of one of the two apertures 6 acts and presses the extremity 9' of the arc surface 9 which delimits the surface plate 2' and which extends parallel to the cutting surface 5 or 5'.
Abstract:
The cutting insert 4 of a sectional milling cutter is fixed between two surfaces respectively of the support 2 and the fixing bracket, by means of a socket head screw 13. So as to position insert 4 rapidly and precisely, with constant cutting profile, the face 2' of the support is equipped with two surface plates 8 and 8' which project and converge together at an angle of approx. 75°. In correspondence, the cutting insert 4 has seats or apertures 6 and 6', forming a wedge which has an aperture angle equal to that of the planes 8 and 8' so that they can be coupled perfectly. The cutting insert 4 has an elliptical profile with two cutting surfaces 5 and 5' and with two apertures or seats 6 and 6' which are placed opposite each other and are superimposed by rotating the insert around the two respective transverse axes. On the apex of one of the two apertures 6 acts and presses the extremity 9' of the arc surface 9 which delimits the surface plate 2' and which extends parallel to the cutting surface 5 or 5'.