1373 Каталог INGERSOLL 2011 Режущий инструмент и инструментальная оснастка Стр.1375

Каталог INGERSOLL 2011 Инструмент и оснастка Стр. 1375 1373 Lab2u

GENERAL TECHNICAL INFORMATION TROUBLE SHOOTING Problem Possible Cause Solution 1. Rapid flank wear reduces tool life. ff t Excessively high cutting speed. Carbide with too low wear resistance. Decrease cutting speed. Use a carbide with higher hardness or a coated carbide 2. Cratering reduces tool life pi High cutting temperature on insert rake face due to high feed and speed Decrease feed and speed. Use coated grade. 3. Cutting edge Insert fracture High load on insert. Insert width too narrow. Grade too brittle. Use wider insert for maximum support. Decrease feed and speed. Choose a tougher grade. 4. Plastic deformation Sc High heat pressure decreasing carbide hardness Use a bigger corner radius and decrease feed and speed. Choose carbide with higher hardness. 5. Chip control. Spaghetti-like chips coil under holder and interfere with operation Small depth of cut. Feed too slow. Insert width too large. Insert radius too large. Check chipbreaking range. Increase depth of cut. Increase feed rate. Use narrower insert with a smaller radius. 6. Poor surface finish Small depth of cut i.e. less than corner radius. Increase depth of cut to minimum radius size. 7. Vibration and poor surface quality Small front clearance angle between insert and workpiece leads to rubbing action. Increase feed to get suitable clearance. Before starting check that the front cutting edge is parallel to workpiece. 1375