Demonstrator 3: 5F High Speed Spindle Head Installed in BIZKOR Machining Center Machining T7075-T6 Aluminium Parts

Tekniker and Goi-Alde beneficiaries described in the beginning of the project the spindle head requirements (mechanical, communication, installation and cables), as well as the problem of regenerative chatter to be solved and the 5 main Functions to be implemented on the spindle (monitoring, dynamic calibration, stability prediction, damping and advanced control). Active Magnetic Bearings 5F Spindle Head was designed manufactured and tested in a Bizkor machine located in IK4-Tekniker facilities. As the 5F roughing spindle head, a good knowledge of the dynamic behavior of the machine can be obtained, and different problems can be detected and solved, when this spindle head is used. It is remarkable the result obtained with the active damping function, where the chip-flow can be increased more than 5 times. Without active damping, the active magnetic bearings spindle head has a very small damping and this way, it would not be valid for cutting due to chatter vibration problems in many cases. By means of the active damping function, the damping is increased and the productivity can be increased clearly. As exploitation result can be commented that a workshop was organized for aerospace parts manufacturers showing the possibilities of a 5F high spindle head to improve the productivity in aluminum roughing.