Adhesive Workholding Allows Turbine Blades To Be Ground In One Hit
Technique offers the possibility of automated production
A new method for securing a turbine blade prior to machining by gluing one side of its aerofoil to a fixture, rather than using mechanical clamping, allows the root and tip to be ground in one operation. Traditionally, due to clamp interference, at least two operations are required on conventional CNC grinders to machine the fir-tree and wedge face on the root as well as the shroud end features at the tip.
The one-hit manufacturing process is not only faster, but also eliminates work-in-progress and the risk of introducing inaccuracy due to repeated refixturing. The technique is being developed in the UK by NCMT, which sells Makino’s VIPER grinding platforms across Europe. Since May 2015, the company has also been European agent for the patented Blue Photon photo-activated adhesive workholding system from the USA. Read the rest of this entry »