Common boring cutter grinding method, and gesture
Boring is the further processing of forging, casting or drilling. The bore can enlarge the pore size, improve the accuracy and reduce the surface roughness, and also can better correct the deflection of the original hole axis. Boring can be divided into rough boring, semi fine boring and fine boring. The dimensional accuracy of precision boring can reach IT8 ~ IT7, and the surface roughness Ra value is from 1.6 to 0.8 mu m.
Boring installationThe length of the 1. knife rod extending out of the tool post should be as short as possible to increase rigidity and avoid the taper error caused by the bending deformation of the cutter bar.The 2. tip should be slightly higher than the rotating center, to reduce the vibration and prevent the boring bar knife, lower broken hole wall, affect the machining precision.3. knife lever should be installed, not askew, so as to prevent the tool bar from hitting the machined surface.
Common boring cutterThe 1. hole boring boring hole with common boring cutter, reducing the radial cutting force is, in order to reduce the knife rod bending deformation, generally the main angle of 45 degrees to 75 degrees, often from 60 degrees to 70 degrees.2. blind hole boring cutter boring stepped hole and blind hole with the boring, the main angle greater than 90 degrees, generally 95 degrees.
