There are a lot of difficulties in the process of CNC machining for open disk

such as small leading/trailing edge radius

difficult-to-machine materials

short tool life

complex CNC programming

long machining time

hard-tocontrol machining deformation

etc. The blisk grinding technique with CBN grinding wheels presented in this paper aims to solve the above-mentioned problems. To ensure this

firstly

cantilever grinding method and strip-width-maximization grinding method with barrel-shape grinding wheels are employed to realize high accuracy machining of blisk profile

the machining errors of suction/pressure surface are fluctuant in the range of 15~20μm

and the minimum leading/trailing edge radius is near 28.7μm. Secondly

a geometry-based adaptive machining method is suitable for the make up machining of leading/trailing edge

the residual error between machining area and its adjacent area is less than 10μm. Finally

3-axis cylindrical CNC grinding method and cylindrical coordinate array grinding method are proposed and verified through simulation

which can shorten blisk (its blade length is less than 60 mm) machining time from hundreds of hours to 3 hours or so.