Общий каталог ZCC-CT 2019 - страница 178

Предыдущая страница Следующая страница

Навигация

Trouble shooting – PCBN & PCD

Trouble shooting – PCBN & PCD A

Type of wearCountermeasure
GeometryCutting condition
Flank wear– Sharper cutting edge for reduced cutting force – Smaller negative chamfer – Use positive inserts– Reduce cutting speed – Increase feed rate to reduce operation time
Notch wear– Bigger radius– Use "method of altering feed rate"
Crater wear/breakage due to crater wear– Sharper cutting edge for reduced cutting force– Reduce cutting speed – Increase feed rate to minimise operation time and to increase distance between cutting edge and crater
Chipping due to rough condition or vibration– Bigger negative chamfer angle and/or honed chamfer– Increase feed rate to reduce number of hits
Flaking– Sharper cutting edge to reduce cutting force – Smaller negative chamfer – Use positive inserts– Increase feed rate to reduce operation time
Thermal crack/breakage– Sharper cutting edge for reduced cutting force – Smaller negative chamfer – Use positive inserts– Reduce cutting speed, feed rate and depth of cut – Dry machining
Chipping– Bigger negative chamfer– Increase cutting speed to reduce cutting force

B

Chipping – Bigger negative chamfer – Increase cutting speed to reduce cutting force C

For investigation please send us the used inserts. If breakage is the problem please use inserts only 80–90 % of expected tool life because broken inserts almost have no information.

D

E