Patent ID: 8348557
Filing Date: 2013-01-08
Classification: B23C,Y10T

Abstract:
1. A milling head for a milling machine for producing synthetic spectacle lenses, comprising a rotational axis, a coupling part for tensioning in a milling spindle chuck, a shoulder which is connected to the coupling part with a contact surface for the milling spindle chuck, a shaft which is connected to the shoulder and a blade collar with an outer diameter D which is connected to the shaft and which comprises several cutting plates with a radius R, wherein between the blade collar at the height of the outer diameter D and the contact surface, a free length L is provided, wherein the measurement of the free length L in relation to the measurement of the outer diameter D and the measurement of the radius R fulfills the following condition: with a maximum deviation a of 3; and wherein the shaft over a length I which corresponds at least 50% to the length L. comprises a diameter d between 10 mm and 32 mm.