Polishing of turbine blades
The origins of an idea
A machine of this type does not exist in the market, aside from an industrial robot, whose rigidity and repeatability of position affect the accuracy of machining. Indeed, by way of example, it is noted that some profiles require up to ±0.05 mm tolerance which is not easily attainable with an industrial robot.
Since the early '60s, the difficulty of polishing such complex profiles with an abrasive belt has meant that this work was done by hand by true "artisans" specialized in polishing the blades. Polish affects the finished product, not only in terms of size but also aesthetics.
Today, with our machine, we offer the market a completely new system.
Firstly, the blade rotation is completely dependent on its point of contact with the belt, thus reducing significantly the compensation of the linear axis and improving the aesthetic profile of the product. Another peculiarity is of course the measurement system of the semi-finished product. This machine is equipped with a probe, able to "study" the thickness of the piece solely in order to steer the subsequent processing. Only in this way, as a result of the polishing, is it possible to optimize the quality of the final product.
Finally, the polishing process is speeded up through the preparation of two abrasive belts, a pre-finishing and finishing, which can be replaced even during operation of the machine, therefore not slowing the production cycle.
