Общий каталог ZCC-CT 2019 - страница 454

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Trouble shooting – turning

Trouble shooting – threading A

ProblèmeCauseSolution
Big flank wear– Cutting speed too high– Reduce cutting speed
– Width of cut too small– Reduce number of width of cut
– Insert over/under centre line– Adjust insert height
Asymmetric wear on left and right cutting edge– Width of cut not optimal– Adjust width of cut
– Inclination angle and lead angle are not optimally aligned– Change the shim to get the correct angle
Breakage– Cutting speed too low– Increase cutting speed
– Cutting force too high– Increase number of width of cut – Reduce width of cut
– Unstable conditions– Improve clamping and overhang to avoid vibrations
– Bad chip control– Increase coolant pressure for better chip removal
Déformation plastique– Cutting speed and temperature too high– Reduce cutting speed – Increase number of width of cut – Reduce width of cut
– Insufficient coolant supply– Improve coolant supply
Mauvais état de surface du filet– Cutting speed too low– Increase cutting speed
– Insert over/under centre line– Adjust insert height
– Bad chip control– Change feed rate and/or width of cut
Profil de filet incorrect– Wrong insert height– Change insert height
– Tool holder doesn't form a 90° angle– Adjust tool holder
– Pitch error in machine– Adjust machine
Profil de filetage de profondeur insuffisante– Wrong insert height– Change insert height
– Breakage of cutting edge– Change insert
– Excessive wear– Change insert
Formation d'arêtes rapportées– Temperature on cutting edge is too low– Increase cutting speed
– Often occurs when machining of carbon steel and stainless steel– Use grade with sufficient toughness (PVD coated)
Vibrations– Wrong cutting data– Increase or highly decrease cutting speed
– Wrong insert height– Change insert height
– Insufficient clamping– Improve clamping system and minimise overhang

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D

E