Effective application of coated tools in milling considering coating fatigue mechanisms
[ X ]
Tarih
2024
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Nova Science Publishers, Inc.
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
The dominant wear mechanisms of coated tools in cutting vary from application to application and are different compared to those of uncoated ones. Their knowledge is crucial for explaining coating failures and appropriately adjusting, among others, the cutting conditions. In this chapter, firstly, the potential wear phenomena will be introduced developed during milling with coated cemented carbide tools. Furthermore, the tool wear evolution will be elucidated imposed by coating fatigue failures which, depending on the applied milling kinematic, might be the prevailing wear phenomena. Coating fatigue failures appear in milling due to repetitive cutting loads associated with the successive tool entries into the workpiece material. Herein, the impact duration of the relevant cutting forces and consequently developed coating strain and strain-rate combinations at endangered regions of the cutting-edge flank and rake are dominant for the coated tool life. Based on these parameters, the wear evolution of coated tools at various milling kinematics and chip geometries can be mathematically described. A related wear predictive model is introduced at the end of the present chapter. The developed model is integrated in a commercial CAM system for milling parts of complicated geometry. © 2024 Nova Science Publishers, Inc. All rights reserved.
Açıklama
Anahtar Kelimeler
Coating, Entry impact duration, Milling, Wear
Kaynak
A Closer Look at Milling Machines and Processes
