Каталог Iscar державки и пластины для нарезания резьбы 2022 - страница 93

Incorrect Thread ProfileBroken Nose During 1st PassPoor Surface FinishPoor Chip Control THREADING USER GUIDE Cause Solution • Unsuitable threading profile • Adjust to correct tool, anvil, and insert • Incorrect center height • Adjust center height • Incorrect pitch in the program • Change the program • Cutting edge too cold • Reduce RPM • Depth of cut too large • Reduce depth of cut/Increase • Wrong grade number of infeed passes • Wrong turned dia. prior to threading • Use tougher grade • Incorrect center height • Check turned dia. • Infeed depth too shallow • Adjust center height • Wrong inclination anvil • Change depth of cut • Tool overhang tool long • Reselect anvil • Reduce tool overhang / Use Anti-vibration bar • Wrong cutting speed • Increase/reduce RPM • Excessive heat in cutting zone • Reduce depth of cut • Poor chip control • Modify flank infeed • Inadequate coolant supply • Apply coolant • Wrong inclination anvil • Reselect anvil • Tool overhang too long • Reduce tool overhang • Incorrect center height • Check center height • Excessive heat in cutting zone • Reduce RPM /change depth • Wrong grade of cut /check turned dia. • Inadequate coolant supply • Use coated grade /check turned • Wrong turned dia. prior to threading dia./use M/B-Type inserts • Incorrect method of infeed • Apply coolant • Check turned dia. • Modify flank infeed 3-5° 727