Turbine blisk has been widely applied in aero-engine due to its many advantages such as good structural integrity

light weight

less assembling link and high assembling precision. Based on the machining characteristics of the turbine blisk

it is simplified as a benchmark workpiece which can be investigated from two aspects of CNC programming and cutting operation. Firstly

CNC programming of the benchmark workpiece was conducted with HyperMILL software. The ideal tool path were obtained

which can be ensured high efficient and high quality machining of the workpiece. Then

the benchmark workpiece material used TC4 titanium alloy which was milled with DMU-70V five-axis machining center. During the finishing of the blades and the hub surfaces

the cutting forces were on-line measured for different end millingtools. Finally

the surface morphology of the blades and hub machined surfaces were observed. The machining performance of the different milling tools for the benchmark workpiece of TC4 titanium alloy is evaluated with the measured cutting forces and surface morphology.