Каталог Iscar сверла со сменной режущей частью 2022 - страница 128

INDEXABLE DRILLS USER GUIDE Troubleshooting Irregular Conditions for DR Drills Chipping Along Machine Troubleshooting Cutting Edge Vibrations If surface slope exceeds 5º, reduce feed by 50% Solutions Solutions during penetration or when exiting. It is preferred 1 Reduce entrance feed. 1 Check mounting of drill. to pre-face the surface to eliminate slope. 2 Choose a tougher grade. 2 Check mounting 3 Choose a geometry of workpiece. 1 2 3 with open chip breaking 3 Increase feed. If drilling for higher feeds. a very soft material, (SOMT, WOLH) reduce feed and 4 Reduce feed.* increase speed.* 5 Reduce cutting speed. 4 Reduce cutting speed. 6 Increase coolant 1 Drilling into a pre-hole reduces feed to pressure. eliminate deflection(1) of the drill body. 2 Drilling an interrupted cut reduces feed during crossing to eliminate deflection(1) of the drill body. 3 Insufficient stability of workpiece requires additional support. Reduce feed. (1) Deflection may be observed by a mark on the drill body.Note: For irregular applications, useDR drills with XOMTChipping of Center InsertInsufficient Torque inserts as a first priority. Solutions Solutions Stacked Plates 1 Check mounting of drill. 1 Reduce feed.*2 Check mounting2 Choose a geometry with Drilling operation is not recommended, but may be done of workpiece. a looser chipformer. by specially designed drills in 16-60 mm range. 3 Reduce entrance feed. Apply standard cutting data. 4 Reduce cutting speed. 5 Check drill runout Regular Conditions for DR Drills (should be 0.05 mm maximum). Note: For irregular applications, use DR drills with XOMT inserts as a first priority. Indexable Insert Drills - Excessive Flank Wear Insufficient Power Troubleshooting DR Chips Solutions Solutions Chip Jamming dueto Long Chips Chip Jammingdespite Short Chips 1 Reduce cutting speed. 1 Reduce cutting speed.2 Increase coolant2 Reduce feed.*pressure/volume.3 Choose a geometry with 3 Choose a better wear a looser chipformer. resistant grade. * Use GF chipformer Solutions Solutions 1 Increase feed. If drilling a 1 Increase coolant very soft material, reduce pressure/volume. feed and increase speed. 2 Reduce cutting speed. 2 Choose a geometry with a tighter chipbreaker for lower feeds (GF). 3 Long chips that rotate around the drill are problematic. If chip formation can not be improved by changing the machining conditions, use a pecking cycle. 126 ISCAR